Github user ericl commented on a diff in the pull request:
https://github.com/apache/spark/pull/15673#discussion_r85856641
--- Diff:
sql/hive/src/main/scala/org/apache/spark/sql/hive/client/HiveShim.scala ---
@@ -585,7 +586,31 @@ private[client] class Shim_v0_13 extends Shim_v0_12 {
getAllPartitionsMethod.invoke(hive,
table).asInstanceOf[JSet[Partition]]
} else {
logDebug(s"Hive metastore filter is '$filter'.")
- getPartitionsByFilterMethod.invoke(hive, table,
filter).asInstanceOf[JArrayList[Partition]]
+ val tryDirectSqlConfVar =
HiveConf.ConfVars.METASTORE_TRY_DIRECT_SQL
+ val tryDirectSql =
+ hive.getConf.getBoolean(tryDirectSqlConfVar.varname,
tryDirectSqlConfVar.defaultBoolVal)
+ try {
+ // Hive may throw an exception when calling this method in some
circumstances, such as
+ // when filtering on a non-string partition column when the hive
config key
+ // hive.metastore.try.direct.sql is false
+ getPartitionsByFilterMethod.invoke(hive, table, filter)
+ .asInstanceOf[JArrayList[Partition]]
+ } catch {
+ case ex: InvocationTargetException if
ex.getCause.isInstanceOf[MetaException] &&
+ !tryDirectSql =>
+ logWarning("Caught Hive MetaException attempting to get
partition metadata by " +
+ "filter from Hive. Falling back to fetching all partition
metadata, which will " +
+ "degrade performance. Consider modifying your Hive metastore
configuration to " +
+ s"set ${tryDirectSqlConfVar.varname} to true.", ex)
+ // HiveShim clients are expected to handle a superset of the
requested partitions
+ getAllPartitionsMethod.invoke(hive,
table).asInstanceOf[JSet[Partition]]
+ case ex: InvocationTargetException if
ex.getCause.isInstanceOf[MetaException] &&
+ tryDirectSql =>
+ throw new RuntimeException("Caught Hive MetaException
attempting to get partition " +
+ "metadata by filter from Hive. Set the Spark configuration
setting " +
--- End diff --
You probably want word it to suggest disabling partition management as a
workaround only.
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