Tony Zhang created SPARK-36187:
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Summary: Commit collision avoidance in dynamicPartitionOverwrite
for non-Parquet formats
Key: SPARK-36187
URL: https://issues.apache.org/jira/browse/SPARK-36187
Project: Spark
Issue Type: Question
Components: SQL
Affects Versions: 3.1.2
Reporter: Tony Zhang
Hi, my question here is specifically about [PR
#29000|https://github.com/apache/spark/pull/29000/files#r649580767] for
SPARK-29302.
To my understanding, the PR is to introduce a different staging directory at
job commit to avoid commit collision. In SQLHadoopMapReduceCommitProtocol, the
new staging directory is only set when SQLConf.OUTPUT_COMMITTER_CLASS is not
null:
[code|https://github.com/apache/spark/blob/master/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/SQLHadoopMapReduceCommitProtocol.scala#L58],
however in current Spark repo, OUTPUT_COMMITTER_CLASS seems set only for
parquet formats:
[code|https://github.com/apache/spark/blob/master/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/parquet/ParquetFileFormat.scala#L96].
However I didn't find similar behavior in Orc related code. Does it mean that
this new staging directory will not take effect for non-Parquet formats? Could
that be a potential problem? or am I missing something here?
Thanks!
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