yikf created SPARK-34541:
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Summary: Fixed an issue where data could not be cleaned up when
unregisterShuffle
Key: SPARK-34541
URL: https://issues.apache.org/jira/browse/SPARK-34541
Project: Spark
Issue Type: Bug
Components: Spark Core
Affects Versions: 3.0.0
Reporter: yikf
Fix For: 3.0.0
While we use the old shuffle fetch protocol, we use partitionId as mapId in the
ShuffleBlockId construction,but we use `context.taskAttemptId()` as mapId that
it is cached in `taskIdMapsForShuffle` when we `getWriter[K, V]`.
where data could not be cleaned up when unregisterShuffle ,because we remove a
shuffle's metadata from the `taskIdMapsForShuffle`'s mapIds, the mapId is
`context.taskAttemptId()` instead of partitionId.
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