Deegue commented on a change in pull request #26422: [SPARK-29786][SQL] Fix
MetaException when dropping a partition not exists on HDFS
URL: https://github.com/apache/spark/pull/26422#discussion_r398346211
##########
File path:
sql/hive/src/main/scala/org/apache/spark/sql/hive/client/HiveClientImpl.scala
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@@ -633,6 +645,17 @@ private[hive] class HiveClientImpl(
// whose specs are supersets of this partial spec. E.g. If a table has
partitions
// (b='1', c='1') and (b='1', c='2'), a partial spec of (b='1') will
match both.
val parts = client.getPartitions(hiveTable, s.asJava).asScala
+ // Check whether the partition we are going to drop is empty.
+ // We make a dummy one for the empty partition. See [SPARK-29786] for
more details.
Review comment:
> Does Spark have a problem to do table scan when partition directory not
exist?
It's related to [#24668](https://github.com/apache/spark/pull/24668), and
controlled by `spark.sql.files.ignoreMissingFiles`.
Spark will check it when listing leaf files.
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