cxzl25 commented on a change in pull request #34493:
URL: https://github.com/apache/spark/pull/34493#discussion_r744092734
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File path:
sql/hive/src/main/scala/org/apache/spark/sql/hive/execution/InsertIntoHiveTable.scala
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@@ -192,6 +192,17 @@ case class InsertIntoHiveTable(
if (partition.nonEmpty) {
if (numDynamicPartitions > 0) {
if (overwrite && table.tableType == CatalogTableType.EXTERNAL) {
+ val numWrittenParts = writtenParts.size
+ val maxDynamicPartitionsKey = "hive.exec.max.dynamic.partitions"
+ val maxDynamicPartitions =
hadoopConf.getInt(maxDynamicPartitionsKey, 1000)
+ if (numWrittenParts > maxDynamicPartitions) {
+ val maxDynamicPartitionsErrMsg =
+ s"Number of dynamic partitions created is $numWrittenParts" +
+ s", which is more than $maxDynamicPartitions" +
+ s". To solve this try to set $maxDynamicPartitionsKey" +
+ s" to at least $numWrittenParts."
Review comment:
It is possible to automatically adjust the number of
`hive.exec.max.dynamic.partitions`.
However, if it is automatically adjusted, many partitions may be created
accidentally, and this parameter is meaningless.
https://github.com/apache/hive/blob/135629b8d6b538fed092641537034a9fbc59c7a0/ql/src/java/org/apache/hadoop/hive/ql/metadata/Hive.java#L1857-L1864
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