[SPARK-46700][CORE] Count the last spilling for the shuffle disk spilling bytes metric #44709
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cloud-fan
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Jan 12, 2024
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Rename the flag to be more accurate. It doesn't mean the last spill file, but should be the only spill file so that it will be used as the final shuffle output file.
cloud-fan
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Jan 12, 2024
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the comment was wrong before. If this flag is true, we are writing the final shuffle output file and will increase the shuffle write metrics rather than the spill metrics.
cloud-fan
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Jan 12, 2024
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move the logging here so that it applies to the last spilling as well.
cloud-fan
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Jan 12, 2024
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This is the actual change of this PR. We should only set this flag if we have not spilled before.
cloud-fan
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Jan 12, 2024
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This hack is not needed anymore.
cloud-fan
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Jan 12, 2024
| ShuffleWriteMetrics shuffleWriteMetrics = taskMetrics.shuffleWriteMetrics(); | ||
| assertEquals(dataToWrite.size(), shuffleWriteMetrics.recordsWritten()); | ||
| assertTrue(taskMetrics.diskBytesSpilled() > 0L); | ||
| assertTrue(taskMetrics.diskBytesSpilled() < mergedOutputFile.length()); |
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The previous test was simply too relaxed.
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cc @mridulm |
gengliangwang
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Jan 12, 2024
dongjoon-hyun
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Jan 12, 2024
…ling bytes metric ### What changes were proposed in this pull request? This PR fixes a long-standing bug in ShuffleExternalSorter about the "spilled disk bytes" metrics. When we close the sorter, we will spill the remaining data in the buffer, with a flag `isLastFile = true`. This flag means the spilling will not increase the "spilled disk bytes" metrics. This makes sense if the sorter has never spilled before, then the final spill file will be used as the final shuffle output file, and we should keep the "spilled disk bytes" metrics as 0. However, if spilling did happen before, then we simply miscount the final spill file for the "spilled disk bytes" metrics today. This PR fixes this issue, by setting that flag when closing the sorter only if this is the first spilling. ### Why are the changes needed? make metrics accurate ### Does this PR introduce _any_ user-facing change? no ### How was this patch tested? updated tests ### Was this patch authored or co-authored using generative AI tooling? no Closes #44709 from cloud-fan/shuffle. Authored-by: Wenchen Fan <[email protected]> Signed-off-by: Dongjoon Hyun <[email protected]> (cherry picked from commit 4ea3742) Signed-off-by: Dongjoon Hyun <[email protected]>
dongjoon-hyun
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Jan 12, 2024
…ling bytes metric ### What changes were proposed in this pull request? This PR fixes a long-standing bug in ShuffleExternalSorter about the "spilled disk bytes" metrics. When we close the sorter, we will spill the remaining data in the buffer, with a flag `isLastFile = true`. This flag means the spilling will not increase the "spilled disk bytes" metrics. This makes sense if the sorter has never spilled before, then the final spill file will be used as the final shuffle output file, and we should keep the "spilled disk bytes" metrics as 0. However, if spilling did happen before, then we simply miscount the final spill file for the "spilled disk bytes" metrics today. This PR fixes this issue, by setting that flag when closing the sorter only if this is the first spilling. ### Why are the changes needed? make metrics accurate ### Does this PR introduce _any_ user-facing change? no ### How was this patch tested? updated tests ### Was this patch authored or co-authored using generative AI tooling? no Closes #44709 from cloud-fan/shuffle. Authored-by: Wenchen Fan <[email protected]> Signed-off-by: Dongjoon Hyun <[email protected]> (cherry picked from commit 4ea3742) Signed-off-by: Dongjoon Hyun <[email protected]>
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Merged to master/3.5/3.4. Thank you, @cloud-fan and @gengliangwang . |
szehon-ho
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Feb 7, 2024
…ling bytes metric ### What changes were proposed in this pull request? This PR fixes a long-standing bug in ShuffleExternalSorter about the "spilled disk bytes" metrics. When we close the sorter, we will spill the remaining data in the buffer, with a flag `isLastFile = true`. This flag means the spilling will not increase the "spilled disk bytes" metrics. This makes sense if the sorter has never spilled before, then the final spill file will be used as the final shuffle output file, and we should keep the "spilled disk bytes" metrics as 0. However, if spilling did happen before, then we simply miscount the final spill file for the "spilled disk bytes" metrics today. This PR fixes this issue, by setting that flag when closing the sorter only if this is the first spilling. ### Why are the changes needed? make metrics accurate ### Does this PR introduce _any_ user-facing change? no ### How was this patch tested? updated tests ### Was this patch authored or co-authored using generative AI tooling? no Closes apache#44709 from cloud-fan/shuffle. Authored-by: Wenchen Fan <[email protected]> Signed-off-by: Dongjoon Hyun <[email protected]> (cherry picked from commit 4ea3742) Signed-off-by: Dongjoon Hyun <[email protected]>
turboFei
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Nov 6, 2025
…ling bytes metric ### What changes were proposed in this pull request? This PR fixes a long-standing bug in ShuffleExternalSorter about the "spilled disk bytes" metrics. When we close the sorter, we will spill the remaining data in the buffer, with a flag `isLastFile = true`. This flag means the spilling will not increase the "spilled disk bytes" metrics. This makes sense if the sorter has never spilled before, then the final spill file will be used as the final shuffle output file, and we should keep the "spilled disk bytes" metrics as 0. However, if spilling did happen before, then we simply miscount the final spill file for the "spilled disk bytes" metrics today. This PR fixes this issue, by setting that flag when closing the sorter only if this is the first spilling. ### Why are the changes needed? make metrics accurate ### Does this PR introduce _any_ user-facing change? no ### How was this patch tested? updated tests ### Was this patch authored or co-authored using generative AI tooling? no Closes apache#44709 from cloud-fan/shuffle. Authored-by: Wenchen Fan <[email protected]> Signed-off-by: Dongjoon Hyun <[email protected]> (cherry picked from commit 4ea3742) Signed-off-by: Dongjoon Hyun <[email protected]>
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What changes were proposed in this pull request?
This PR fixes a long-standing bug in ShuffleExternalSorter about the "spilled disk bytes" metrics. When we close the sorter, we will spill the remaining data in the buffer, with a flag
isLastFile = true. This flag means the spilling will not increase the "spilled disk bytes" metrics. This makes sense if the sorter has never spilled before, then the final spill file will be used as the final shuffle output file, and we should keep the "spilled disk bytes" metrics as 0. However, if spilling did happen before, then we simply miscount the final spill file for the "spilled disk bytes" metrics today.This PR fixes this issue, by setting that flag when closing the sorter only if this is the first spilling.
Why are the changes needed?
make metrics accurate
Does this PR introduce any user-facing change?
no
How was this patch tested?
updated tests
Was this patch authored or co-authored using generative AI tooling?
no