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patch partition reading

jonalter and others added 30 commits July 10, 2015 11:34
Author: Jonathan Alter <[email protected]>

Closes apache#7093 from jonalter/SPARK-7977 and squashes the following commits:

ccd44cc [Jonathan Alter] Changed println to log in ThreadingSuite
7fcac3e [Jonathan Alter] Reverting to println in ThreadingSuite
10724b6 [Jonathan Alter] Changing some printlns to logs in tests
eeec1e7 [Jonathan Alter] Merge branch 'master' of github.com:apache/spark into SPARK-7977
0b1dcb4 [Jonathan Alter] More println cleanup
aedaf80 [Jonathan Alter] Merge branch 'master' of github.com:apache/spark into SPARK-7977
925fd98 [Jonathan Alter] Merge branch 'master' of github.com:apache/spark into SPARK-7977
0c16fa3 [Jonathan Alter] Replacing some printlns with logs
45c7e05 [Jonathan Alter] Merge branch 'master' of github.com:apache/spark into SPARK-7977
5c8e283 [Jonathan Alter] Allowing println in audit-release examples
5b50da1 [Jonathan Alter] Allowing printlns in example files
ca4b477 [Jonathan Alter] Merge branch 'master' of github.com:apache/spark into SPARK-7977
83ab635 [Jonathan Alter] Fixing new printlns
54b131f [Jonathan Alter] Merge branch 'master' of github.com:apache/spark into SPARK-7977
1cd8a81 [Jonathan Alter] Removing some unnecessary comments and printlns
b837c3a [Jonathan Alter] Disallowing println
…a 2.11

This PR removes most of the code in the Spark REPL for Scala 2.11 and leaves just a couple of overridden methods in `SparkILoop` in order to:

- change welcome message
- restrict available commands (like `:power`)
- initialize Spark context

The two codebases have diverged and it's extremely hard to backport fixes from the upstream REPL. This somewhat radical step is absolutely necessary in order to fix other REPL tickets (like SPARK-8013 - Hive Thrift server for 2.11). BTW, the Scala REPL has fixed the serialization-unfriendly wrappers thanks to ScrapCodes's work in [apache#4522](scala/scala#4522)

All tests pass and I tried the `spark-shell` on our Mesos cluster with some simple jobs (including with additional jars), everything looked good.

As soon as Scala 2.11.7 is out we need to upgrade and get a shaded `jline` dependency, clearing the way for SPARK-8013.

/cc pwendell

Author: Iulian Dragos <[email protected]>

Closes apache#6903 from dragos/issue/no-spark-repl-fork and squashes the following commits:

c596c6f [Iulian Dragos] Merge branch 'master' into issue/no-spark-repl-fork
2b1a305 [Iulian Dragos] Removed spaces around multiple imports.
0ce67a6 [Iulian Dragos] Remove -verbose flag for java compiler (added by mistake in an earlier commit).
10edaf9 [Iulian Dragos] Keep the jline dependency only in the 2.10 build.
529293b [Iulian Dragos] Add back Spark REPL files to rat-excludes, since they are part of the 2.10 real.
d85370d [Iulian Dragos] Remove jline dependency from the Spark REPL.
b541930 [Iulian Dragos] Merge branch 'master' into issue/no-spark-repl-fork
2b15962 [Iulian Dragos] Change jline dependency and bump Scala version.
b300183 [Iulian Dragos] Rename package and add license on top of the file, remove files from rat-excludes and removed `-Yrepl-sync` per reviewer’s request.
9d46d85 [Iulian Dragos] Fix SPARK-7944.
abcc7cb [Iulian Dragos] Remove the REPL forked code.
pwendell and I discussed this a little more offline and concluded that it would be good to keep it more conservative. Losing cached blocks may be very expensive and we should only allow it if the user knows what he/she is doing.

FYI harishreedharan sryza.

Author: Andrew Or <[email protected]>

Closes apache#7329 from andrewor14/da-cached-timeout and squashes the following commits:

cef0b4e [Andrew Or] Change timeout to infinity
Too many logs even when set the log level to warning.

Author: Cheng Hao <[email protected]>

Closes apache#7340 from chenghao-intel/log and squashes the following commits:

59658cf [Cheng Hao] change the log level to info
…sspath as other executor backends

AFAIK, some spark application always use LocalBackend to do some local initiatives, spark sql is an example. Starting a LocalPoint won't add user classpath into executor.
```java
  override def start() {
    localEndpoint = SparkEnv.get.rpcEnv.setupEndpoint(
      "LocalBackendEndpoint", new LocalEndpoint(SparkEnv.get.rpcEnv, scheduler, this, totalCores))
  }
```
Thus will cause local executor fail with these scenarios, loading hadoop built-in native libraries, loading other user defined native libraries, loading user jars, reading s3 config from a site.xml file, etc

Author: Min Zhou <[email protected]>

Closes apache#7091 from coderplay/master and squashes the following commits:

365838f [Min Zhou] Fixed java.net.MalformedURLException, add default scheme, support relative path
d215b7f [Min Zhou] Follows spark standard scala style, make the auto testing happy
84ad2cd [Min Zhou] Use system specific path separator instead of ','
01f5d1a [Min Zhou] Merge branch 'master' of https://github.com/apache/spark
e528be7 [Min Zhou] Merge branch 'master' of https://github.com/apache/spark
45bf62c [Min Zhou] SPARK-8675 Executors created by LocalBackend won't get the same classpath as other executor backends
It may loss precision in microseconds when using float for it.

Author: Davies Liu <[email protected]>

Closes apache#7344 from davies/fix_date_test and squashes the following commits:

249ec61 [Davies Liu] fix flaky test
Author: rahulpalamuttam <[email protected]>

Closes apache#7341 from rahulpalamuttam/TaggingMLlibfpm and squashes the following commits:

bef2843 [rahulpalamuttam] fix @SInCE tags in mmlib.fpm
cd86252 [rahulpalamuttam] Add @SInCE tags to mllib.fpm
This patch adds a cache-friendly external sorter which operates on serialized bytes and uses this sorter to implement a new sort operator for Spark SQL and DataFrames.

### Overview of the new sorter

The new sorter design is inspired by [Alphasort](http://research.microsoft.com/pubs/68249/alphasort.doc) and implements a key-prefix optimization in order to improve the cache friendliness of the sort.  In naive sort implementations, the sorting algorithm operates on an array of record pointers.  To compare two records for ordering, the sorter must dereference these pointers, which likely involves random memory access, then compare the objects themselves.

![image](https://cloud.githubusercontent.com/assets/50748/8611390/3b1402ae-2675-11e5-8308-1a10bf347e6e.png)

In a key-prefix sort, the sort operates on an array which stores the record pointer alongside a prefix of the record's key. When comparing two records for ordering, the sorter first compares the the stored key prefixes. If the ordering can be determined from the key prefixes (i.e. the prefixes are unequal), then the sort can avoid directly comparing the records, avoiding random memory accesses and full record comparisons. For example, if we're sorting a list of strings then we can store the first 8 bytes of the UTF-8 encoded string as the key-prefix and can perform unsigned byte-at-a-time comparisons to determine the ordering of strings based on their prefixes, only resorting to full comparisons for strings that share a common prefix.  In cases where the sort key can fit entirely in the space allotted for the key prefix (e.g. the sorting key is an integer), we completely avoid direct record comparison.

In this patch's implementation of key-prefix sorting, our sorter's internal array stores a 64-bit long and 64-bit pointer for each record being sorted. The key prefixes are generated by the user when inserting records into the sorter, which uses a user-defined comparison function for comparing them.  The `PrefixComparators` object implements a set of comparators for many common types, including primitive numeric types and UTF-8 strings.

The actual sorting is implemented by `UnsafeInMemorySorter`.  Most consumers will not use this directly, but instead will use `UnsafeExternalSorter`, a class which implements a sort that can spill to disk in response to memory pressure.  Internally, `UnsafeExternalSorter` creates `UnsafeInMemorySorters` to perform sorting and uses `UnsafeSortSpillReader/Writer` to spill and read back runs of sorted records and `UnsafeSortSpillMerger` to merge multiple sorted spills into a single sorted iterator.  This external sorter integrates with Spark's existing ShuffleMemoryManager for controlling spilling.

Many parts of this sorter's design are based on / copied from the more specialized external sort implementation that I designed for the new UnsafeShuffleManager write path; see apache#5868 for more details on that patch.

### Sorting rows in Spark SQL

For now, `UnsafeExternalSorter` is only used by Spark SQL, which uses it to implement a new sort operator, `UnsafeExternalSort`.  This sort operator uses a SQL-specific class called `UnsafeExternalRowSorter` that configures an `UnsafeExternalSorter` to use prefix generators and comparators that operate on rows encoded in the UnsafeRow format that was designed for Project Tungsten.

I used some interesting unit-testing techniques to test this patch's SQL-specific components.  `UnsafeExternalSortSuite` uses the SQL random data generators introduced in apache#7176 to test the UnsafeSort operator with all atomic types both with and without nullability and in both ascending and descending sort orders.  `PrefixComparatorsSuite` contains a cool use of ScalaCheck + ScalaTest's `GeneratorDrivenPropertyChecks` in order to test UTF8String prefix comparison.

### Misc. additional improvements made in this patch

This patch made several miscellaneous improvements to related code in Spark SQL:

- The logic for selecting physical sort operator implementations, which was partially duplicated in both `Exchange` and `SparkStrategies, has now been consolidated into a `getSortOperator()` helper function in `SparkStrategies`.
- The `SparkPlanTest` unit testing helper trait has been extended with new methods for comparing the output produced by two different physical plans. This makes it easy to write tests which assert that two physical operator implementations should produce the same output.  I also added a method for disabling the implicit sorting of outputs prior to comparing them, a change which is necessary in order to be able to write proper SparkPlan tests for sort operators.

### Tasks deferred to followup patches

While most of this patch's features are reasonably well-tested and complete, there are a number of tasks that are intentionally being deferred to followup patches:

- Add tests which mock the ShuffleMemoryManager to check that memory pressure properly triggers spilling (there are examples of this type of test in apache#5868).
- Add tests to ensure that spill files are properly cleaned up after errors.  I'd like to do this in the context of a patch which introduces more general metrics for ensuring proper cleanup of tasks' temporary files; see https://issues.apache.org/jira/browse/SPARK-8966 for more details.
- Metrics integration: there are some open questions regarding how to track / report spill metrics for non-shuffle operations, so I've deferred most of the IO / shuffle metrics integration for now.
- Performance profiling.

<!-- Reviewable:start -->
[<img src="https://reviewable.io/review_button.png" height=40 alt="Review on Reviewable"/>](https://reviewable.io/reviews/apache/spark/6444)
<!-- Reviewable:end -->

Author: Josh Rosen <[email protected]>

Closes apache#6444 from JoshRosen/sql-external-sort and squashes the following commits:

6beb467 [Josh Rosen] Remove a bunch of overloaded methods to avoid default args. issue
2bbac9c [Josh Rosen] Merge remote-tracking branch 'origin/master' into sql-external-sort
35dad9f [Josh Rosen] Make sortAnswers = false the default in SparkPlanTest
5135200 [Josh Rosen] Fix spill reading for large rows; add test
2f48777 [Josh Rosen] Add test and fix bug for sorting empty arrays
d1e28bc [Josh Rosen] Merge remote-tracking branch 'origin/master' into sql-external-sort
cd05866 [Josh Rosen] Fix scalastyle
3947fc1 [Josh Rosen] Merge remote-tracking branch 'origin/master' into sql-external-sort
d13ac55 [Josh Rosen] Hacky approach to copying of UnsafeRows for sort followed by limit.
845bea3 [Josh Rosen] Remove unnecessary zeroing of row conversion buffer
c56ec18 [Josh Rosen] Clean up final row copying code.
d31f180 [Josh Rosen] Re-enable NullType sorting test now that SPARK-8868 is fixed
844f4ca [Josh Rosen] Merge remote-tracking branch 'origin/master' into sql-external-sort
293f109 [Josh Rosen] Add missing license header.
f99a612 [Josh Rosen] Fix bugs in string prefix comparison.
9d00afc [Josh Rosen] Clean up prefix comparators for integral types
88aff18 [Josh Rosen] NULL_PREFIX has to be negative infinity for floating point types
613e16f [Josh Rosen] Test with larger data.
1d7ffaa [Josh Rosen] Somewhat hacky fix for descending sorts
08701e7 [Josh Rosen] Fix prefix comparison of null primitives.
b86e684 [Josh Rosen] Set global = true in UnsafeExternalSortSuite.
1c7bad8 [Josh Rosen] Make sorting of answers explicit in SparkPlanTest.checkAnswer().
b81a920 [Josh Rosen] Temporarily enable only the passing sort tests
5d6109d [Josh Rosen] Fix inconsistent handling / encoding of record lengths.
87b6ed9 [Josh Rosen] Fix critical issues in test which led to false negatives.
8d7fbe7 [Josh Rosen] Fixes to multiple spilling-related bugs.
82e21c1 [Josh Rosen] Force spilling in UnsafeExternalSortSuite.
88b72db [Josh Rosen] Test ascending and descending sort orders.
f27be09 [Josh Rosen] Fix tests by binding attributes.
0a79d39 [Josh Rosen] Revert "Undo part of a SparkPlanTest change in apache#7162 that broke my test."
7c3c864 [Josh Rosen] Undo part of a SparkPlanTest change in apache#7162 that broke my test.
9969c14 [Josh Rosen] Merge remote-tracking branch 'origin/master' into sql-external-sort
5822e6f [Josh Rosen] Fix test compilation issue
939f824 [Josh Rosen] Remove code gen experiment.
0dfe919 [Josh Rosen] Implement prefix sort for strings (albeit inefficiently).
66a813e [Josh Rosen] Prefix comparators for float and double
b310c88 [Josh Rosen] Integrate prefix comparators for Int and Long (others coming soon)
95058d9 [Josh Rosen] Add missing SortPrefixUtils file
4c37ba6 [Josh Rosen] Add tests for sorting on all primitive types.
6890863 [Josh Rosen] Fix memory leak on empty inputs.
d246e29 [Josh Rosen] Fix consideration of column types when choosing sort implementation.
6b156fb [Josh Rosen] Some WIP work on prefix comparison.
7f875f9 [Josh Rosen] Commit failing test demonstrating bug in handling objects in spills
41b8881 [Josh Rosen] Get UnsafeInMemorySorterSuite to pass (WIP)
90c2b6a [Josh Rosen] Update test name
6d6a1e6 [Josh Rosen] Centralize logic for picking sort operator implementations
9869ec2 [Josh Rosen] Clean up Exchange code a bit
82bb0ec [Josh Rosen] Fix IntelliJ complaint due to negated if condition
1db845a [Josh Rosen] Many more changes to harmonize with shuffle sorter
ebf9eea [Josh Rosen] Harmonization with shuffle's unsafe sorter
206bfa2 [Josh Rosen] Add some missing newlines at the ends of files
26c8931 [Josh Rosen] Back out some Hive changes that aren't needed anymore
62f0bb8 [Josh Rosen] Update to reflect SparkPlanTest changes
21d7d93 [Josh Rosen] Back out of BlockObjectWriter change
7eafecf [Josh Rosen] Port test to SparkPlanTest
d468a88 [Josh Rosen] Update for InternalRow refactoring
269cf86 [Josh Rosen] Back out SMJ operator change; isolate changes to selection of sort op.
1b841ca [Josh Rosen] WIP towards copying
b420a71 [Josh Rosen] Move most of the existing SMJ code into Java.
dfdb93f [Josh Rosen] SparkFunSuite change
73cc761 [Josh Rosen] Fix whitespace
9cc98f5 [Josh Rosen] Move more code to Java; fix bugs in UnsafeRowConverter length type.
c8792de [Josh Rosen] Remove some debug logging
dda6752 [Josh Rosen] Commit some missing code from an old git stash.
58f36d0 [Josh Rosen] Merge in a sketch of a unit test for the new sorter (now failing).
2bd8c9a [Josh Rosen] Import my original tests and get them to pass.
d5d3106 [Josh Rosen] WIP towards external sorter for Spark SQL.
…t user specified options

Author: Cheng Lian <[email protected]>

Closes apache#7347 from liancheng/spark-8990 and squashes the following commits:

045698c [Cheng Lian] SPARK-8990 DataFrameReader.parquet() should respect user specified options
…ts InternalRow instead of Row

This is a follow-up of [SPARK-8888] [1], which also aims to optimize writing dynamic partitions.

Three more changes can be made here:

1. Using `InternalRow` instead of `Row` in `BaseWriterContainer.outputWriterForRow`
2. Using `Cast` expressions to convert partition columns to strings, so that we can leverage code generation.
3. Replacing the FP-style `zip` and `map` calls with a faster imperative `while` loop.

[1]: https://issues.apache.org/jira/browse/SPARK-8888

Author: Cheng Lian <[email protected]>

Closes apache#7331 from liancheng/spark-8961 and squashes the following commits:

b5ab9ae [Cheng Lian] Casts Java iterator to Scala iterator explicitly
719e63b [Cheng Lian] Makes BaseWriterContainer.outputWriterForRow accepts InternalRow instead of Row
…mands

This will allow problems with piped commands to be detected.
This will also allow tasks to be retried where errors are rare (such as network problems in piped commands).

Author: Scott Taylor <[email protected]>

Closes apache#6262 from megatron-me-uk/patch-2 and squashes the following commits:

04ae1d5 [Scott Taylor] Remove spurious empty line
98fa101 [Scott Taylor] fix blank line style error
574b564 [Scott Taylor] Merge pull request apache#2 from megatron-me-uk/patch-4
0c1e762 [Scott Taylor] Update rdd pipe method for checkCode
ab9a2e1 [Scott Taylor] Update rdd pipe tests for checkCode
eb4801c [Scott Taylor] fix fail_condition
b0ac3a4 [Scott Taylor] Merge pull request apache#1 from megatron-me-uk/megatron-me-uk-patch-1
a307d13 [Scott Taylor] update rdd tests to test pipe modes
34fcdc3 [Scott Taylor] add optional argument 'mode' for rdd.pipe
a0c0161 [Scott Taylor] fix generator issue
8a9ef9c [Scott Taylor] make check_return_code an iterator
0486ae3 [Scott Taylor] style fixes
8ed89a6 [Scott Taylor] Chain generators to prevent potential deadlock
4153b02 [Scott Taylor] fix list.sort returns None
491d3fc [Scott Taylor] Pass a function handle to assertRaises
3344a21 [Scott Taylor] wrap assertRaises with QuietTest
3ab8c7a [Scott Taylor] remove whitespace for style
cc1a73d [Scott Taylor] fix style issues in pipe test
8db4073 [Scott Taylor] Add a test for rdd pipe functions
1b3dc4e [Scott Taylor] fix missing space around operator style
0974f98 [Scott Taylor] add space between words in multiline string
45f4977 [Scott Taylor] fix line too long style error
5745d85 [Scott Taylor] Remove space to fix style
f552d49 [Scott Taylor] Catch non-zero exit from pipe commands
…v Smirnov Test for RDDs

This contribution is my original work and I license it to the project under it's open source license.

Author: jose.cambronero <[email protected]>

Closes apache#6994 from josepablocam/master and squashes the following commits:

bbb30b1 [jose.cambronero] renamed KSTestResult to KolmogorovSmirnovTestResult, to stay consistent with method name
0d0c201 [jose.cambronero] kstTest -> kolmogorovSmirnovTest in statistics.md
1f56371 [jose.cambronero] changed ksTest in public API to kolmogorovSmirnovTest for clarity
a48ae7b [jose.cambronero] refactor code to account for serializable RealDistribution. Reuse testOneSample( _, cdf)
1bb44bd [jose.cambronero]  style and doc changes. Factored out ks test into 2 separate tests
2ec2aa6 [jose.cambronero] initialize to stdnormal when no params passed (and log). Change unit tests to approximate equivalence rather than strict
a4bc0c7 [jose.cambronero] changed ksTest(data, distName) to ksTest(data, distName, params*) after api discussions. Changed tests and docs accordingly
7e66f57 [jose.cambronero] copied implementation note to public api docs, and added @see for links to wiki info
e760ebd [jose.cambronero] line length changes to fit style check
3288e42 [jose.cambronero] addressed style changes, correctness change to simpler approach, and fixed edge case for foldLeft in searchOneSampleCandidates when a partition is empty
9026895 [jose.cambronero] addressed style changes, correctness change to simpler approach, and fixed edge case for foldLeft in searchOneSampleCandidates when a partition is empty
1226b30 [jose.cambronero] reindent multi-line lambdas, prior intepretation of style guide was wrong on my part
9c0f1af [jose.cambronero] additional style changes incorporated and added documentation to mllib statistics docs
3f81ad2 [jose.cambronero] renamed ks1 sample test for clarity
992293b [jose.cambronero] Style changes as per comments and added implementation note explaining the distributed approach.
6a4784f [jose.cambronero] specified what distributions are available for the convenience method ksTest(data, name) (solely standard normal)
4b8ba61 [jose.cambronero] fixed off by 1/N in cases when post-constant adjustment ecdf is above cdf, but prior to adj it was below
0b5e8ec [jose.cambronero] changed KS one sample test to perform just 1 distributed pass (in addition to the sorting pass), operates on each partition separately. Implementation of Sandy Ryza's algorithm
16b5c4c [jose.cambronero] renamed dat to data and eliminated recalc of RDD size by sharing as argument between empirical and evalOneSampleP
c18dc66 [jose.cambronero] removed ksTestOpt from API and changed comments in HypothesisTestSuite accordingly
f6951b6 [jose.cambronero] changed style and some comments based on feedback from pull request
b9cff3a [jose.cambronero] made small changes to pass style check
ce8e9a1 [jose.cambronero] added kstest testing in HypothesisTestSuite
4da189b [jose.cambronero] added user facing ks test functions
c659ea1 [jose.cambronero] created KS test class
13dfe4d [jose.cambronero] created test result class for ks test
…an to Spark MLlib

Add parallel PrefixSpan algorithm and test file.
Support non-temporal sequences.

Author: zhangjiajin <[email protected]>
Author: zhang jiajin <[email protected]>

Closes apache#7258 from zhangjiajin/master and squashes the following commits:

ca9c4c8 [zhangjiajin] Modified the code according to the review comments.
574e56c [zhangjiajin] Add new object LocalPrefixSpan, and do some optimization.
ba5df34 [zhangjiajin] Fix a Scala style error.
4c60fb3 [zhangjiajin] Fix some Scala style errors.
1dd33ad [zhangjiajin] Modified the code according to the review comments.
89bc368 [zhangjiajin] Fixed a Scala style error.
a2eb14c [zhang jiajin] Delete PrefixspanSuite.scala
951fd42 [zhang jiajin] Delete Prefixspan.scala
575995f [zhangjiajin] Modified the code according to the review comments.
91fd7e6 [zhangjiajin] Add new algorithm PrefixSpan and test file.
Made default impl of Params.validateParams empty
CC mengxr

Author: Joseph K. Bradley <[email protected]>

Closes apache#7349 from jkbradley/pipeline-small-cleanups and squashes the following commits:

4e0f013 [Joseph K. Bradley] small cleanups after SPARK-5956
Author: Wenchen Fan <[email protected]>

Closes apache#7339 from cloud-fan/minor and squashes the following commits:

84a2128 [Wenchen Fan] remove unapply
6a37c12 [Wenchen Fan] remove unnecessary abstraction for ExtractValue
Author: Kay Ousterhout <[email protected]>

Closes apache#7275 from kayousterhout/SPARK-8880 and squashes the following commits:

3e9ce7c [Kay Ousterhout] Added missing return type
e150278 [Kay Ousterhout] [SPARK-8880] Fix confusing Stage.attemptId member variable
It may loss a microsecond if using timestamp as float, should be `int` instead.

Author: Davies Liu <[email protected]>

Closes apache#7363 from davies/fix_microsecond and squashes the following commits:

36f6007 [Davies Liu] fix microsecond loss in Python 3
chenghao-intel zhichao-li qiansl127

Author: Daoyuan Wang <[email protected]>

Closes apache#6851 from adrian-wang/udflg and squashes the following commits:

0f1bff2 [Daoyuan Wang] address comments from davis
7a6bdbb [Daoyuan Wang] add '.' for hex()
c1f6824 [Daoyuan Wang] add codegen, test for all types
ec625b0 [Daoyuan Wang] conditional function: least/greatest
Author: Wenchen Fan <[email protected]>

Closes apache#7355 from cloud-fan/fromString and squashes the following commits:

3bbb9d6 [Wenchen Fan] fix code gen
7dab957 [Wenchen Fan] naming fix
0fbbe19 [Wenchen Fan] address comments
ac1f3d1 [Wenchen Fan] Support casting between IntervalType and StringType
shivaram, added module for rstudio install

Author: Vincent D. Warmerdam <[email protected]>

Closes apache#7366 from koaning/rstudio-install and squashes the following commits:

e47c2da [Vincent D. Warmerdam] added rstudio module
This PR enables SparkR to dynamically ship the SparkR binary package to the AM node in YARN cluster mode, thus it is no longer required that the SparkR package be installed on each worker node.

This PR uses the JDK jar tool to package the SparkR package, because jar is thought to be available on both Linux/Windows platforms where JDK has been installed.

This PR does not address the R worker involved in RDD API. Will address it in a separate JIRA issue.

This PR does not address SBT build. SparkR installation and packaging by SBT will be addressed in a separate JIRA issue.

R/install-dev.bat is not tested. shivaram , Could you help to test it?

Author: Sun Rui <[email protected]>

Closes apache#6743 from sun-rui/SPARK-6797 and squashes the following commits:

ca63c86 [Sun Rui] Adjust MimaExcludes after rebase.
7313374 [Sun Rui] Fix unit test errors.
72695fb [Sun Rui] Fix unit test failures.
193882f [Sun Rui] Fix Mima test error.
fe25a33 [Sun Rui] Fix Mima test error.
35ecfa3 [Sun Rui] Fix comments.
c38a005 [Sun Rui] Unzipped SparkR binary package is still required for standalone and Mesos modes.
b05340c [Sun Rui] Fix scala style.
2ca5048 [Sun Rui] Fix comments.
1acefd1 [Sun Rui] Fix scala style.
0aa1e97 [Sun Rui] Fix scala style.
41d4f17 [Sun Rui] Add support for locating SparkR package for R workers required by RDD APIs.
49ff948 [Sun Rui] Invoke jar.exe with full path in install-dev.bat.
7b916c5 [Sun Rui] Use 'rem' consistently.
3bed438 [Sun Rui] Add a comment.
681afb0 [Sun Rui] Fix a bug that RRunner does not handle client deployment modes.
cedfbe2 [Sun Rui] [SPARK-6797][SPARKR] Add support for YARN cluster mode.
This adds Pylint checks to PySpark.

For now this lazy installs using easy_install to /dev/pylint (similar to the pep8 script).
We still need to figure out what rules to be allowed.

Author: MechCoder <[email protected]>

Closes apache#7241 from MechCoder/pylint and squashes the following commits:

8496834 [MechCoder] Silence warnings and make pylint tests fail to check if it works in jenkins
57393a3 [MechCoder] undefined-variable
a8e2547 [MechCoder] Minor changes
7753810 [MechCoder] remove trailing whitespace
75c5d2b [MechCoder] Remove blacklisted arguments and pointless statements check
6bde250 [MechCoder] Disable all checks for now
3464666 [MechCoder] Add pylint configuration file
d28109f [MechCoder] [SPARK-8706] [PySpark] [Project infra] Add pylint checks to PySpark
…gePage

In StagePage, the SchedulerDelay is calculated as totalExecutionTime - executorRunTime - executorOverhead - gettingResultTime.
But the totalExecutionTime is calculated in the way that doesn't include the gettingResultTime.

Author: Carson Wang <[email protected]>

Closes apache#7319 from carsonwang/SchedulerDelayTime and squashes the following commits:

f66fb6e [Carson Wang] Update the code style
7d971ae [Carson Wang] Correct the calculation of SchedulerDelay
…o fix build error in docker.

[SPARK-8954] [Build]
1. Remove unneeded deb repository from Dockerfile to fix build error in docker.
2. Remove unneeded /var/lib/apt/lists/* after install to reduce the docker image size (by ~30MB).

Author: yongtang <[email protected]>

Closes apache#7346 from yongtang/SPARK-8954 and squashes the following commits:

36024a1 [yongtang] [SPARK-8954] [Build] Remove unneeded /var/lib/apt/lists/* after install to reduce the docker image size (by ~30MB)
7084941 [yongtang] [SPARK-8954] [Build] Remove unneeded deb repository from Dockerfile to fix build error in docker.
Removed private[ml] from Generated documentation

Author: Vinod K C <[email protected]>

Closes apache#7367 from vinodkc/fix_sharedparmascodegen and squashes the following commits:

4fa3c8f [Vinod K C] Adding auto generated code
7e19025 [Vinod K C] Removed private[ml]
Author: Vinod K C <[email protected]>

Closes apache#7040 from vinodkc/fix_CaseKeyWhen_equalNullSafe and squashes the following commits:

be5e641 [Vinod K C] Renamed equalNullSafe to threeValueEquals
aac9f67 [Vinod K C] Updated test suite and genCode method
f2d0b53 [Vinod K C]  Fix equalNullSafe comparison
Author: Hari Shreedharan <[email protected]>

Closes apache#6939 from harishreedharan/upgrade-flume-1.6.0 and squashes the following commits:

94b80ae [Hari Shreedharan] [SPARK-8533][Streaming] Upgrade Flume to 1.6.0
…en StreamingContext is closed

The issue link: https://issues.apache.org/jira/browse/SPARK-8743
Deregister Codahale metrics for streaming when StreamingContext is closed

Design:
Adding the method calls in the appropriate start() and stop () methods for the StreamingContext

Actions in the PullRequest:
1) Added the registerSource method call to the start method for the Streaming Context.
2) Added the removeSource method to the stop method.
3) Added comments for both 1 and 2 and comment to show initialization of the StreamingSource
4) Added a test case to check for both registration and de-registration of metrics

Previous closed PR for reference: apache#7250

Author: Neelesh Srinivas Salian <[email protected]>

Closes apache#7362 from nssalian/branch-SPARK-8743 and squashes the following commits:

7d998a3 [Neelesh Srinivas Salian] Removed the Thread.sleep() call
8b26397 [Neelesh Srinivas Salian] Moved the scalatest.{} import
0e8007a [Neelesh Srinivas Salian] moved import org.apache.spark{} to correct place
daedaa5 [Neelesh Srinivas Salian] Corrected Ordering of imports
8873180 [Neelesh Srinivas Salian] Removed redundancy in imports
59227a4 [Neelesh Srinivas Salian] Changed the ordering of the imports to classify  scala and spark imports
d8cb577 [Neelesh Srinivas Salian] Added registerSource to start() and removeSource to stop(). Wrote a test to check the registration and de-registration
JoshRosen and others added 28 commits July 14, 2015 18:55
…cleanup after SPARK-8317)

SPARK-8317 changed the SQL Exchange operator so that it no longer pushed sorting into Spark's shuffle layer, a change which allowed more efficient SQL-specific sorters to be used.

This patch performs some leftover cleanup based on those changes:

- Exchange's constructor should no longer accept a `newOrdering` since it's no longer used and no longer works as expected.
- `addOperatorsIfNecessary` looked at shuffle input's output ordering to decide whether to sort, but this is the wrong node to be examining: it needs to look at whether the post-shuffle node has the right ordering, since shuffling will not preserve row orderings.  Thanks to davies for spotting this.

Author: Josh Rosen <[email protected]>

Closes apache#7407 from JoshRosen/SPARK-9050 and squashes the following commits:

e70be50 [Josh Rosen] No need to wrap line
e866494 [Josh Rosen] Refactor addOperatorsIfNecessary to make code clearer
2e467da [Josh Rosen] Remove `newOrdering` from Exchange.
Add a configuration to set checkpoint directory  for convenience to user.
[Jira Address](https://issues.apache.org/jira/browse/SPARK-8820)

Author: huangzhaowei <[email protected]>

Closes apache#7218 from SaintBacchus/SPARK-8820 and squashes the following commits:

d49fe4b [huangzhaowei] Rename the configuration name
66ea47c [huangzhaowei] Add the unit test.
dd0acc1 [huangzhaowei] [SPARK-8820][Streaming] Add a configuration to set checkpoint dir.
…cs to decrease the memory usage and GC overhead

Hostname in TaskMetrics will be created through deserialization, mostly the number of hostname is only the order of number of cluster node, so adding a cache layer to dedup the object could reduce the memory usage and alleviate GC overhead, especially for long-running and fast job generation applications like Spark Streaming.

Author: jerryshao <[email protected]>
Author: Saisai Shao <[email protected]>

Closes apache#5064 from jerryshao/SPARK-5523 and squashes the following commits:

3e2412a [jerryshao] Address the comments
b092a81 [Saisai Shao] Add a pool to cache the hostname
Author: Sun Rui <[email protected]>

Closes apache#7395 from sun-rui/SPARK-8808 and squashes the following commits:

ce603bc [Sun Rui] Use '<-' instead of '='.
88590b1 [Sun Rui] Use '<-' instead of '='.
This patch makes the following changes:

1. ExpectsInputTypes only defines expected input types, but does not perform any implicit type casting.
2. ImplicitCastInputTypes is a new trait that defines both expected input types, as well as performs implicit type casting.
3. BinaryOperator has a new abstract function "inputType", which defines the expected input type for both left/right. Concrete BinaryOperator expressions no longer perform any implicit type casting.
4. For BinaryOperators, convert NullType (i.e. null literals) into some accepted type so BinaryOperators don't need to handle NullTypes.

TODOs needed: fix unit tests for error reporting.

I'm intentionally not changing anything in aggregate expressions because yhuai is doing a big refactoring on that right now.

Author: Reynold Xin <[email protected]>

Closes apache#7348 from rxin/typecheck and squashes the following commits:

8fcf814 [Reynold Xin] Fixed ordering of cases.
3bb63e7 [Reynold Xin] Style fix.
f45408f [Reynold Xin] Comment update.
aa7790e [Reynold Xin] Moved RemoveNullTypes into ImplicitTypeCasts.
438ea07 [Reynold Xin] space
d55c9e5 [Reynold Xin] Removes NullTypes.
360d124 [Reynold Xin] Fixed the rule.
fb66657 [Reynold Xin] Convert NullType into some accepted type for BinaryOperators.
2e22330 [Reynold Xin] Fixed unit tests.
4932d57 [Reynold Xin] Style fix.
d061691 [Reynold Xin] Rename existing ExpectsInputTypes -> ImplicitCastInputTypes.
e4727cc [Reynold Xin] BinaryOperator should not be doing implicit cast.
d017861 [Reynold Xin] Improve expression type checking.
Revert apache#7216 and apache#7386.  These patch seems to be causing quite a few test failures:

```
Caused by: java.lang.reflect.InvocationTargetException
	at sun.reflect.GeneratedMethodAccessor322.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.spark.sql.hive.client.Shim_v0_13.getPartitionsByFilter(HiveShim.scala:351)
	at org.apache.spark.sql.hive.client.ClientWrapper$$anonfun$getPartitionsByFilter$1.apply(ClientWrapper.scala:320)
	at org.apache.spark.sql.hive.client.ClientWrapper$$anonfun$getPartitionsByFilter$1.apply(ClientWrapper.scala:318)
	at org.apache.spark.sql.hive.client.ClientWrapper$$anonfun$withHiveState$1.apply(ClientWrapper.scala:180)
	at org.apache.spark.sql.hive.client.ClientWrapper.retryLocked(ClientWrapper.scala:135)
	at org.apache.spark.sql.hive.client.ClientWrapper.withHiveState(ClientWrapper.scala:172)
	at org.apache.spark.sql.hive.client.ClientWrapper.getPartitionsByFilter(ClientWrapper.scala:318)
	at org.apache.spark.sql.hive.client.HiveTable.getPartitions(ClientInterface.scala:78)
	at org.apache.spark.sql.hive.MetastoreRelation.getHiveQlPartitions(HiveMetastoreCatalog.scala:670)
	at org.apache.spark.sql.hive.execution.HiveTableScan.doExecute(HiveTableScan.scala:137)
	at org.apache.spark.sql.execution.SparkPlan$$anonfun$execute$1.apply(SparkPlan.scala:90)
	at org.apache.spark.sql.execution.SparkPlan$$anonfun$execute$1.apply(SparkPlan.scala:90)
	at org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:147)
	at org.apache.spark.sql.execution.SparkPlan.execute(SparkPlan.scala:89)
	at org.apache.spark.sql.execution.Exchange$$anonfun$doExecute$1.apply(Exchange.scala:164)
	at org.apache.spark.sql.execution.Exchange$$anonfun$doExecute$1.apply(Exchange.scala:151)
	at org.apache.spark.sql.catalyst.errors.package$.attachTree(package.scala:48)
	... 85 more
Caused by: MetaException(message:Filtering is supported only on partition keys of type string)
	at org.apache.hadoop.hive.metastore.parser.ExpressionTree$FilterBuilder.setError(ExpressionTree.java:185)
	at org.apache.hadoop.hive.metastore.parser.ExpressionTree$LeafNode.getJdoFilterPushdownParam(ExpressionTree.java:452)
	at org.apache.hadoop.hive.metastore.parser.ExpressionTree$LeafNode.generateJDOFilterOverPartitions(ExpressionTree.java:357)
	at org.apache.hadoop.hive.metastore.parser.ExpressionTree$LeafNode.generateJDOFilter(ExpressionTree.java:279)
	at org.apache.hadoop.hive.metastore.parser.ExpressionTree$TreeNode.generateJDOFilter(ExpressionTree.java:243)
	at org.apache.hadoop.hive.metastore.parser.ExpressionTree.generateJDOFilterFragment(ExpressionTree.java:590)
	at org.apache.hadoop.hive.metastore.ObjectStore.makeQueryFilterString(ObjectStore.java:2417)
	at org.apache.hadoop.hive.metastore.ObjectStore.getPartitionsViaOrmFilter(ObjectStore.java:2029)
	at org.apache.hadoop.hive.metastore.ObjectStore.access$500(ObjectStore.java:146)
	at org.apache.hadoop.hive.metastore.ObjectStore$4.getJdoResult(ObjectStore.java:2332)
```
https://amplab.cs.berkeley.edu/jenkins/view/Spark-QA-Test/job/Spark-Master-Maven-with-YARN/2945/HADOOP_PROFILE=hadoop-2.4,label=centos/testReport/junit/org.apache.spark.sql.hive.execution/SortMergeCompatibilitySuite/auto_sortmerge_join_16/

Author: Michael Armbrust <[email protected]>

Closes apache#7409 from marmbrus/revertMetastorePushdown and squashes the following commits:

92fabd3 [Michael Armbrust] Revert SPARK-6910 and SPARK-9027
5d3bdf2 [Michael Armbrust] Revert "[SPARK-9027] [SQL] Generalize metastore predicate pushdown"
I implemented the Python API for LDA. But I didn't implemented a method for `LDAModel.describeTopics()`, beause it's a little hard to implement it now. And adding document about that and an example code would fit for another issue.

TODO: LDAModel.describeTopics() in Python must be also implemented. But it would be nice to fit for another issue. Implementing it is a little hard, since the return value of `describeTopics` in Scala consists of Tuple classes.

Author: Yu ISHIKAWA <[email protected]>

Closes apache#6791 from yu-iskw/SPARK-6259 and squashes the following commits:

6855f59 [Yu ISHIKAWA] LDA inherits object
28bd165 [Yu ISHIKAWA] Change the place of testing code
d7a332a [Yu ISHIKAWA] Remove the doc comment about the optimizer's default value
083e226 [Yu ISHIKAWA] Add the comment about the supported values and the default value of `optimizer`
9f8bed8 [Yu ISHIKAWA] Simplify casting
faa9764 [Yu ISHIKAWA] Add some comments for the LDA paramters
98f645a [Yu ISHIKAWA] Remove the interface for `describeTopics`. Because it is not implemented.
57ac03d [Yu ISHIKAWA] Remove the unnecessary import in Python unit testing
73412c3 [Yu ISHIKAWA] Fix the typo
2278829 [Yu ISHIKAWA] Fix the indentation
39514ec [Yu ISHIKAWA] Modify how to cast the input data
8117e18 [Yu ISHIKAWA] Fix the validation problems by `lint-scala`
77fd1b7 [Yu ISHIKAWA] Not use LabeledPoint
68f0653 [Yu ISHIKAWA] Support some parameters for `ALS.train()` in Python
25ef2ac [Yu ISHIKAWA] Resolve conflicts with rebasing
…param

 This allows Kmeans to be initialized using an existing set of cluster centers provided as  a KMeansModel object. This mode of initialization performs a single run.

Author: FlytxtRnD <[email protected]>

Closes apache#6737 from FlytxtRnD/Kmeans-8018 and squashes the following commits:

94b56df [FlytxtRnD] style correction
ef95ee2 [FlytxtRnD] style correction
c446c58 [FlytxtRnD] documentation and numRuns warning change
06d13ef [FlytxtRnD] numRuns corrected
d12336e [FlytxtRnD] numRuns variable modifications
07f8554 [FlytxtRnD] remove setRuns from setIntialModel
e721dfe [FlytxtRnD] Merge remote-tracking branch 'upstream/master' into Kmeans-8018
242ead1 [FlytxtRnD] corrected == to === in assert
714acb5 [FlytxtRnD] added numRuns
60c8ce2 [FlytxtRnD] ignore runs parameter and initialModel test suite changed
582e6d9 [FlytxtRnD] Merge remote-tracking branch 'upstream/master' into Kmeans-8018
3f5fc8e [FlytxtRnD] test case modified and one runs condition added
cd5dc5c [FlytxtRnD] Merge remote-tracking branch 'upstream/master' into Kmeans-8018
16f1b53 [FlytxtRnD] Merge branch 'Kmeans-8018', remote-tracking branch 'upstream/master' into Kmeans-8018
e9c35d7 [FlytxtRnD] Remove getInitialModel and match cluster count criteria
6959861 [FlytxtRnD] Accept initial cluster centers in KMeans
JIRA: https://issues.apache.org/jira/browse/SPARK-8279

Author: Yijie Shen <[email protected]>

Closes apache#6938 from yijieshen/udf_round_3 and squashes the following commits:

07a124c [Yijie Shen] remove useless def children
392b65b [Yijie Shen] add negative scale test in DecimalSuite
61760ee [Yijie Shen] address reviews
302a78a [Yijie Shen] Add dataframe function test
31dfe7c [Yijie Shen] refactor round to make it readable
8c7a949 [Yijie Shen] rebase & inputTypes update
9555e35 [Yijie Shen] tiny style fix
d10be4a [Yijie Shen] use TypeCollection to specify wanted input and implicit cast
c3b9839 [Yijie Shen] rely on implict cast to handle string input
b0bff79 [Yijie Shen] make round's inner method's name more meaningful
9bd6930 [Yijie Shen] revert accidental change
e6f44c4 [Yijie Shen] refactor eval and genCode
1b87540 [Yijie Shen] modify checkInputDataTypes using foldable
5486b2d [Yijie Shen] DataFrame API modification
2077888 [Yijie Shen] codegen versioned eval
6cd9a64 [Yijie Shen] refactor Round's constructor
9be894e [Yijie Shen] add round functions in o.a.s.sql.functions
7c83e13 [Yijie Shen] more tests on round
56db4bb [Yijie Shen] Add decimal support to Round
7e163ae [Yijie Shen] style fix
653d047 [Yijie Shen] Add math function round
Improves the performance of LocalPrefixSpan by implementing optimizations proposed in [SPARK-8997](https://issues.apache.org/jira/browse/SPARK-8997)

Author: Feynman Liang <[email protected]>
Author: Feynman Liang <[email protected]>
Author: Xiangrui Meng <[email protected]>

Closes apache#7360 from feynmanliang/SPARK-8997-improve-prefixspan and squashes the following commits:

59db2f5 [Feynman Liang] Merge pull request apache#1 from mengxr/SPARK-8997
91e4357 [Xiangrui Meng] update LocalPrefixSpan impl
9212256 [Feynman Liang] MengXR code review comments
f055d82 [Feynman Liang] Fix failing scalatest
2e00cba [Feynman Liang] Depth first projections
70b93e3 [Feynman Liang] Performance improvements in LocalPrefixSpan, fix tests
If running the following codes, the task table will be broken because accumulators aren't escaped.
```
val a = sc.accumulator(1, "<table>")
sc.parallelize(1 to 10).foreach(i => a += i)
```

Before this fix,

<img width="1348" alt="screen shot 2015-07-13 at 8 02 44 pm" src="https://cloud.githubusercontent.com/assets/1000778/8649295/b17c491e-299b-11e5-97ee-4e6a64074c4f.png">

After this fix,

<img width="1355" alt="screen shot 2015-07-13 at 8 14 32 pm" src="https://cloud.githubusercontent.com/assets/1000778/8649337/f9e9c9ec-299b-11e5-927e-35c0a2f897f5.png">

Author: zsxwing <[email protected]>

Closes apache#7369 from zsxwing/SPARK-9012 and squashes the following commits:

a83c9b6 [zsxwing] Escape Accumulators in the task table
This adds Pylint checks to PySpark.

For now this lazy installs using easy_install to /dev/pylint (similar to the pep8 script).
We still need to figure out what rules to be allowed.

Author: MechCoder <[email protected]>

Closes apache#7241 from MechCoder/pylint and squashes the following commits:

2fc7291 [MechCoder] Remove pylint test fail
6d883a2 [MechCoder] Silence warnings and make pylint tests fail to check if it works in jenkins
f3a5e17 [MechCoder] undefined-variable
ca8b749 [MechCoder] Minor changes
71629f8 [MechCoder] remove trailing whitespace
8498ff9 [MechCoder] Remove blacklisted arguments and pointless statements check
1dbd094 [MechCoder] Disable all checks for now
8b8aa8a [MechCoder] Add pylint configuration file
7871bb1 [MechCoder] [SPARK-8706] [PySpark] [Project infra] Add pylint checks to PySpark
JIRA: https://issues.apache.org/jira/browse/SPARK-8840

Currently the type coercion rules don't include float type. This PR simply adds it.

Author: Liang-Chi Hsieh <[email protected]>

Closes apache#7280 from viirya/add_r_float_coercion and squashes the following commits:

c86dc0e [Liang-Chi Hsieh] For comments.
dbf0c1b [Liang-Chi Hsieh] Implicitly convert Double to Float based on provided schema.
733015a [Liang-Chi Hsieh] Add test case for DataFrame with float type.
30c2a40 [Liang-Chi Hsieh] Update test case.
52b5294 [Liang-Chi Hsieh] Merge remote-tracking branch 'upstream/master' into add_r_float_coercion
6f9159d [Liang-Chi Hsieh] Add another test case.
8db3244 [Liang-Chi Hsieh] schema also needs to support float. add test case.
0dcc992 [Liang-Chi Hsieh] Add float coercion on SparkR.
We can keep expressions' mutable states in generated class(like `SpecificProjection`) as member variables, so that we can read and modify them inside codegened expressions.

Author: Wenchen Fan <[email protected]>

Closes apache#7392 from cloud-fan/mutable-state and squashes the following commits:

eb3a221 [Wenchen Fan] fix order
73144d8 [Wenchen Fan] naming improvement
318f41d [Wenchen Fan] address more comments
d43b65d [Wenchen Fan] address comments
fd45c7a [Wenchen Fan] Support mutable state in code gen expressions
https://issues.apache.org/jira/browse/SPARK-8221

One concern is the result would be negative if the divisor is not positive( i.e pmod(7, -3) ), but the behavior is the same as hive.

Author: zhichao.li <[email protected]>

Closes apache#6783 from zhichao-li/pmod2 and squashes the following commits:

7083eb9 [zhichao.li] update to the latest type checking
d26dba7 [zhichao.li] add pmod
…nterval

This is a minor fixing for apache#7355 to allow spaces in the beginning and ending of string parsed to `Interval`.

Author: Liang-Chi Hsieh <[email protected]>

Closes apache#7390 from viirya/fix_interval_string and squashes the following commits:

9eb6831 [Liang-Chi Hsieh] Use trim instead of modifying regex.
57861f7 [Liang-Chi Hsieh] Fix scala style.
815a9cb [Liang-Chi Hsieh] Slightly modify regex to allow spaces in the beginning and ending of string.
jkbradley I put the elastic net under the **Algorithm guide** section. Also add the formula of elastic net in mllib-linear `mllib-linear-methods#regularizers`.

dbtsai I left the code tab for you to add example code. Do you think it is the right place?

Author: Shuo Xiang <[email protected]>

Closes apache#6504 from coderxiang/elasticnet and squashes the following commits:

f6061ee [Shuo Xiang] typo
90a7c88 [Shuo Xiang] Merge remote-tracking branch 'upstream/master' into elasticnet
0610a36 [Shuo Xiang] move out the elastic net to ml-linear-methods
8747190 [Shuo Xiang] merge master
706d3f7 [Shuo Xiang] add python code
9bc2b4c [Shuo Xiang] typo
db32a60 [Shuo Xiang] java code sample
aab3b3a [Shuo Xiang] Merge remote-tracking branch 'upstream/master' into elasticnet
a0dae07 [Shuo Xiang] simplify code
d8616fd [Shuo Xiang] Update the definition of elastic net. Add scala code; Mention Lasso and Ridge
df5bd14 [Shuo Xiang] use wikipeida page in ml-linear-methods.md
78d9366 [Shuo Xiang] address comments
8ce37c2 [Shuo Xiang] Merge branch 'elasticnet' of github.com:coderxiang/spark into elasticnet
8f24848 [Shuo Xiang] Merge branch 'elastic-net-doc' of github.com:coderxiang/spark into elastic-net-doc
998d766 [Shuo Xiang] Merge branch 'elastic-net-doc' of github.com:coderxiang/spark into elastic-net-doc
89f10e4 [Shuo Xiang] Merge remote-tracking branch 'upstream/master' into elastic-net-doc
9262a72 [Shuo Xiang] update
7e07d12 [Shuo Xiang] update
b32f21a [Shuo Xiang] add doc for elastic net in sparkml
937eef1 [Shuo Xiang] Merge remote-tracking branch 'upstream/master' into elastic-net-doc
180b496 [Shuo Xiang] Merge remote-tracking branch 'upstream/master'
aa0717d [Shuo Xiang] Merge remote-tracking branch 'upstream/master'
5f109b4 [Shuo Xiang] Merge remote-tracking branch 'upstream/master'
c5c5bfe [Shuo Xiang] Merge remote-tracking branch 'upstream/master'
98804c9 [Shuo Xiang] fix bug in topBykey and update test
fix teardown to skip table delete if hive context is null

Author: Steve Loughran <[email protected]>

Closes apache#7425 from steveloughran/stevel/patches/SPARK-9070-JavaDataFrameSuite-NPE and squashes the following commits:

1982d38 [Steve Loughran] SPARK-9070 JavaDataFrameSuite teardown NPEs if setup failed
…riance

Fixes implementation of `explainedVariance` and `r2` to be consistent with their definitions as described in [SPARK-9005](https://issues.apache.org/jira/browse/SPARK-9005).

Author: Feynman Liang <[email protected]>

Closes apache#7361 from feynmanliang/SPARK-9005-RegressionMetrics-bugs and squashes the following commits:

f1112fc [Feynman Liang] Add explainedVariance formula
1a3d098 [Feynman Liang] SROwen code review comments
08a0e1b [Feynman Liang] Fix pyspark tests
db8605a [Feynman Liang] Style fix
bde9761 [Feynman Liang] Fix RegressionMetrics tests, relax assumption predictor is unbiased
c235de0 [Feynman Liang] Fix RegressionMetrics tests
4c4e56f [Feynman Liang] Fix RegressionMetrics computation of explainedVariance and r2
Replace Akka Serialization with Spark Serializer and add unit tests.

Author: zsxwing <[email protected]>

Closes apache#7159 from zsxwing/remove-akka-serialization and squashes the following commits:

fc0fca3 [zsxwing] Merge branch 'master' into remove-akka-serialization
cf81a58 [zsxwing] Fix the code style
73251c6 [zsxwing] Add test scope
9ef4af9 [zsxwing] Add AkkaRpcEndpointRef.hashCode
433115c [zsxwing] Remove final
be3edb0 [zsxwing] Support deserializing RpcEndpointRef
ecec410 [zsxwing] Replace Akka Serialization with Spark Serializer
I meet a problem. When I submit some tasks, the thread spark-dynamic-executor-allocation should seed the message about "requestTotalExecutors", and the new executor should start. But I meet a problem about this thread, like:

2015-07-14 19:02:17,461 | WARN  | [spark-dynamic-executor-allocation] | Error sending message [message = RequestExecutors(1)] in 1 attempts
java.util.concurrent.TimeoutException: Futures timed out after [120 seconds]
        at scala.concurrent.impl.Promise$DefaultPromise.ready(Promise.scala:219)
        at scala.concurrent.impl.Promise$DefaultPromise.result(Promise.scala:223)
        at scala.concurrent.Await$$anonfun$result$1.apply(package.scala:107)
        at scala.concurrent.BlockContext$DefaultBlockContext$.blockOn(BlockContext.scala:53)
        at scala.concurrent.Await$.result(package.scala:107)
        at org.apache.spark.rpc.RpcEndpointRef.askWithRetry(RpcEndpointRef.scala:102)
        at org.apache.spark.rpc.RpcEndpointRef.askWithRetry(RpcEndpointRef.scala:78)
        at org.apache.spark.scheduler.cluster.YarnSchedulerBackend.doRequestTotalExecutors(YarnSchedulerBackend.scala:57)
        at org.apache.spark.scheduler.cluster.CoarseGrainedSchedulerBackend.requestTotalExecutors(CoarseGrainedSchedulerBackend.scala:351)
        at org.apache.spark.SparkContext.requestTotalExecutors(SparkContext.scala:1382)
        at org.apache.spark.ExecutorAllocationManager.addExecutors(ExecutorAllocationManager.scala:343)
        at org.apache.spark.ExecutorAllocationManager.updateAndSyncNumExecutorsTarget(ExecutorAllocationManager.scala:295)
        at org.apache.spark.ExecutorAllocationManager.org$apache$spark$ExecutorAllocationManager$$schedule(ExecutorAllocationManager.scala:248)

when after some minutes, I find a new ApplicationMaster start,  and tasks submitted start to run. The tasks Completed. And after long time (eg, ten minutes), the number of executor  does not reduce to zero.  I use the default value of "spark.dynamicAllocation.minExecutors".

Author: KaiXinXiaoLei <[email protected]>

Closes apache#7352 from KaiXinXiaoLei/dym and squashes the following commits:

3603631 [KaiXinXiaoLei] change logError to logWarning
efc4f24 [KaiXinXiaoLei] change file
…ld be marked as nondeterministic.

I also took the chance to more explicitly define the semantics of deterministic.

Author: Reynold Xin <[email protected]>

Closes apache#7428 from rxin/non-deterministic and squashes the following commits:

a760827 [Reynold Xin] [SPARK-9071][SQL] MonotonicallyIncreasingID and SparkPartitionID should be marked as nondeterministic.
ilovesoup pushed a commit that referenced this pull request Jul 20, 2015
@ilovesoup ilovesoup merged commit 96c01f0 into ilovesoup:topic/fix_hiveserver_auth Jul 20, 2015
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