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[SPARK-18099][YARN] Fail if same files added to distributed cache for --files and --archives #15627

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[SPARK-18099][YARN] Fail if same files added to distributed cache for --files and --archives #15627

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2c55fc2
Dist cache yarn during submit should throw error for adding same file…
kishorvpatil Oct 25, 2016
a1dc858
Convert required to IllegalArgumentException
kishorvpatil Oct 28, 2016
33f95ab
Reword exception message
kishorvpatil Oct 28, 2016
f797481
Adding comment and unit tests
kishorvpatil Oct 31, 2016
51eefa5
Updating unit test cover all three scenarios.
kishorvpatil Nov 3, 2016
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12 changes: 10 additions & 2 deletions yarn/src/main/scala/org/apache/spark/deploy/yarn/Client.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -598,8 +598,16 @@ private[spark] class Client(
).foreach { case (flist, resType, addToClasspath) =>
flist.foreach { file =>
val (_, localizedPath) = distribute(file, resType = resType)
if (addToClasspath && localizedPath != null) {
cachedSecondaryJarLinks += localizedPath
if (addToClasspath) {
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@tgravescs tgravescs Oct 28, 2016

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can you add a comment here explaining what exactly thi sis doing to help explain and keep from breaking in future.

Also can you add another unit test to cover this case.

if (localizedPath != null) {
cachedSecondaryJarLinks += localizedPath
}
} else {
if (localizedPath != null) {
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@ueshin ueshin Nov 8, 2016

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I guess here is localizedPath == null ?

throw new IllegalArgumentException(s"Attempt to add ($file) multiple times. " +
"Please check the values of 'spark.yarn.dist.files' and/or " +
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@tgravescs tgravescs Oct 28, 2016

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can you remove the part about check values of those specific configs because there are multiple ways for these to specified (configs or --files, --jars, etc). Perhaps just say please check the values you specified for uploading files,jars, and archives to make sure one isn't specified multiple times..

"'spark.yarn.dist.archives'.")
}
}
}
}
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