Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/18671#discussion_r128005142
--- Diff:
sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveExternalCatalog.scala ---
@@ -1088,9 +1088,19 @@ private[spark] class HiveExternalCatalog(conf:
SparkConf, hadoopConf: Configurat
table: String,
partialSpec: Option[TablePartitionSpec] = None):
Seq[CatalogTablePartition] = withClient {
val partColNameMap = buildLowerCasePartColNameMap(getTable(db, table))
- client.getPartitions(db, table,
partialSpec.map(lowerCasePartitionSpec)).map { part =>
+ val res = client.getPartitions(db, table,
partialSpec.map(lowerCasePartitionSpec)).map { part =>
part.copy(spec = restorePartitionSpec(part.spec, partColNameMap))
}
+
+ partialSpec match {
+ // This might be a bug of Hive: When the partition value inside the
partial partition spec
+ // contains dot, and we ask Hive to list partitions w.r.t. the
partial partition spec, Hive
+ // treats dot as matching any single character and may return more
partitions than we
+ // expected. Here we do an extra filter to drop unexpected
partitions.
+ case Some(spec) if spec.exists(_._2.contains(".")) =>
--- End diff --
I tried other special chars but seems dot is the only one having the
problem.
And seems Hive does want to do exact matching:
https://github.com/apache/hive/blob/release-1.2.1/metastore/src/java/org/apache/hadoop/hive/metastore/ObjectStore.java#L1529-L1535
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