[SPARK-46957][CORE][3.5][3.4] Decommission migrated shuffle files should be able to cleanup from executor #47122
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…e to cleanup from executor ### What changes were proposed in this pull request? This PR uses `SortShuffleManager#taskIdMapsForShuffle` to track the migrated shuffle files on the destination executor. ### Why are the changes needed? This is a long-standing bug in decommission where the migrated shuffle files can't be cleaned up from the executor. Normally, the shuffle files are tracked by `taskIdMapsForShuffle` during the map task execution. Upon receiving the `RemoveShuffle(shuffleId)` request from driver, executor can clean up those shuffle files by searching `taskIdMapsForShuffle`. However, for the migrated shuffle files by decommission, they lose the track in the destination executor's `taskIdMapsForShuffle` and can't be deleted as a result. Note this bug only affects shuffle removal on the executor. For shuffle removal on the external shuffle service (when `spark.shuffle.service.removeShuffle` enabled and the executor stores the shuffle files has gone), we don't rely on `taskIdMapsForShuffle` but using the specific shuffle block id to locate the shuffle file directly. So it won't be an issue there. ### Does this PR introduce _any_ user-facing change? No. (Common users won't see the difference underlying.) ### How was this patch tested? Add unit test. ### Was this patch authored or co-authored using generative AI tooling? No. Closes apache#47037 from Ngone51/SPARK-46957. Authored-by: Yi Wu <[email protected]> Signed-off-by: Yi Wu <[email protected]>
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@yaooqinn @LuciferYang Could you take a look? Thanks! |
This was referenced Jun 27, 2024
yaooqinn
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…uld be able to cleanup from executor ### What changes were proposed in this pull request? This PR uses `SortShuffleManager#taskIdMapsForShuffle` to track the migrated shuffle files on the destination executor. ### Why are the changes needed? This is a long-standing bug in decommission where the migrated shuffle files can't be cleaned up from the executor. Normally, the shuffle files are tracked by `taskIdMapsForShuffle` during the map task execution. Upon receiving the `RemoveShuffle(shuffleId)` request from driver, executor can clean up those shuffle files by searching `taskIdMapsForShuffle`. However, for the migrated shuffle files by decommission, they lose the track in the destination executor's `taskIdMapsForShuffle` and can't be deleted as a result. Note this bug only affects shuffle removal on the executor. For shuffle removal on the external shuffle service (when `spark.shuffle.service.removeShuffle` enabled and the executor stores the shuffle files has gone), we don't rely on `taskIdMapsForShuffle` but using the specific shuffle block id to locate the shuffle file directly. So it won't be an issue there. ### Does this PR introduce _any_ user-facing change? No. (Common users won't see the difference underlying.) ### How was this patch tested? Add unit test. ### Was this patch authored or co-authored using generative AI tooling? No. Closes #47122 from Ngone51/SPARK-46957-3.5. Authored-by: Yi Wu <[email protected]> Signed-off-by: Kent Yao <[email protected]>
yaooqinn
pushed a commit
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Jun 27, 2024
…uld be able to cleanup from executor ### What changes were proposed in this pull request? This PR uses `SortShuffleManager#taskIdMapsForShuffle` to track the migrated shuffle files on the destination executor. ### Why are the changes needed? This is a long-standing bug in decommission where the migrated shuffle files can't be cleaned up from the executor. Normally, the shuffle files are tracked by `taskIdMapsForShuffle` during the map task execution. Upon receiving the `RemoveShuffle(shuffleId)` request from driver, executor can clean up those shuffle files by searching `taskIdMapsForShuffle`. However, for the migrated shuffle files by decommission, they lose the track in the destination executor's `taskIdMapsForShuffle` and can't be deleted as a result. Note this bug only affects shuffle removal on the executor. For shuffle removal on the external shuffle service (when `spark.shuffle.service.removeShuffle` enabled and the executor stores the shuffle files has gone), we don't rely on `taskIdMapsForShuffle` but using the specific shuffle block id to locate the shuffle file directly. So it won't be an issue there. ### Does this PR introduce _any_ user-facing change? No. (Common users won't see the difference underlying.) ### How was this patch tested? Add unit test. ### Was this patch authored or co-authored using generative AI tooling? No. Closes #47122 from Ngone51/SPARK-46957-3.5. Authored-by: Yi Wu <[email protected]> Signed-off-by: Kent Yao <[email protected]> (cherry picked from commit b28ddb1) Signed-off-by: Kent Yao <[email protected]>
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Merged to 3.5/3.4, thank you @Ngone51 @LuciferYang |
szehon-ho
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Aug 7, 2024
…uld be able to cleanup from executor ### What changes were proposed in this pull request? This PR uses `SortShuffleManager#taskIdMapsForShuffle` to track the migrated shuffle files on the destination executor. ### Why are the changes needed? This is a long-standing bug in decommission where the migrated shuffle files can't be cleaned up from the executor. Normally, the shuffle files are tracked by `taskIdMapsForShuffle` during the map task execution. Upon receiving the `RemoveShuffle(shuffleId)` request from driver, executor can clean up those shuffle files by searching `taskIdMapsForShuffle`. However, for the migrated shuffle files by decommission, they lose the track in the destination executor's `taskIdMapsForShuffle` and can't be deleted as a result. Note this bug only affects shuffle removal on the executor. For shuffle removal on the external shuffle service (when `spark.shuffle.service.removeShuffle` enabled and the executor stores the shuffle files has gone), we don't rely on `taskIdMapsForShuffle` but using the specific shuffle block id to locate the shuffle file directly. So it won't be an issue there. ### Does this PR introduce _any_ user-facing change? No. (Common users won't see the difference underlying.) ### How was this patch tested? Add unit test. ### Was this patch authored or co-authored using generative AI tooling? No. Closes apache#47122 from Ngone51/SPARK-46957-3.5. Authored-by: Yi Wu <[email protected]> Signed-off-by: Kent Yao <[email protected]> (cherry picked from commit b28ddb1) Signed-off-by: Kent Yao <[email protected]>
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What changes were proposed in this pull request?
This PR uses
SortShuffleManager#taskIdMapsForShuffleto track the migrated shuffle files on the destination executor.Why are the changes needed?
This is a long-standing bug in decommission where the migrated shuffle files can't be cleaned up from the executor. Normally, the shuffle files are tracked by
taskIdMapsForShuffleduring the map task execution. Upon receiving theRemoveShuffle(shuffleId)request from driver, executor can clean up those shuffle files by searchingtaskIdMapsForShuffle. However, for the migrated shuffle files by decommission, they lose the track in the destination executor'staskIdMapsForShuffleand can't be deleted as a result.Note this bug only affects shuffle removal on the executor. For shuffle removal on the external shuffle service (when
spark.shuffle.service.removeShuffleenabled and the executor stores the shuffle files has gone), we don't rely ontaskIdMapsForShufflebut using the specific shuffle block id to locate the shuffle file directly. So it won't be an issue there.Does this PR introduce any user-facing change?
No. (Common users won't see the difference underlying.)
How was this patch tested?
Add unit test.
Was this patch authored or co-authored using generative AI tooling?
No.