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[SPARK-6910] [SQL] Support for pushing predicates down to metastore for partition pruning #6921

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[SPARK-6910] [SQL] Support for pushing predicates down to metastore for partition pruning #6921

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ca46042
Implement predicate pushdown for hive metastore catalog
Jun 27, 2015
cf7c6e5
Check data types of expressions and push down string and integral types
Jun 27, 2015
2ff6277
Fix stylecheck
Jun 28, 2015
ead139a
Disable predicate pushdown when hive metastore version is older than
Jun 29, 2015
095672f
Push down predicates when convertMetastoreParquet=true
Jun 29, 2015
05f8e16
Remove an empty line
Jun 29, 2015
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Disable predicate pushdown when hive metastore version is older than 
0.13
  • Loading branch information
Cheolsoo Park committed Jun 29, 2015
commit ead139a4948d4aa5d10905cdb6fc7adbe3b12465
12 changes: 11 additions & 1 deletion sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveShim.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -106,7 +106,17 @@ private[hive] object HiveShim {

def toMetastoreFilter(
predicates: Seq[Expression],
partitionKeys: List[FieldSchema]): Option[String] = {
partitionKeys: List[FieldSchema],
hiveMetastoreVersion: String): Option[String] = {

// Binary comparison operators such as >, <, >=, and <= started being supported by
// getPartitionsByFilter() in 0.13. So if Hive matastore version is older than 0.13,
// no predicate is pushed down. See HIVE-4888.
val versionPattern = "([\\d]+\\.[\\d]+).*".r
hiveMetastoreVersion match {
case versionPattern(version) => if (version.toDouble < 0.13) return None
case _ => // continue
}

val varcharKeys = partitionKeys
.filter(col => col.getType.startsWith(serdeConstants.VARCHAR_TYPE_NAME))
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5 changes: 4 additions & 1 deletion sql/hive/src/main/scala/org/apache/spark/sql/hive/execution/HiveTableScan.scala
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Expand Up @@ -54,7 +54,10 @@ case class HiveTableScan(
val attributes = requestedAttributes.map(relation.attributeMap)

private[this] val metastoreFilter =
HiveShim.toMetastoreFilter(partitionPruningPred, relation.hiveQlTable.getPartitionKeys)
HiveShim.toMetastoreFilter(
partitionPruningPred,
relation.hiveQlTable.getPartitionKeys,
context.hiveMetastoreVersion)

// Bind all partition key attribute references in the partition pruning predicate for later
// evaluation.
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