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Posted to reviews@spark.apache.org by "hgs19921112 (via GitHub)" <gi...@apache.org> on 2023/08/21 07:54:24 UTC
[GitHub] [spark] hgs19921112 opened a new pull request, #42572: [SPARK-44881[COMMON]Executor stucked on retrying to fetch shuffle data when `java.lang.OutOfMemoryError. unable to create native thread` exception occurred.
hgs19921112 opened a new pull request, #42572:
URL: https://github.com/apache/spark/pull/42572
## Executor stucked on retrying to fetch shuffle data when `java.lang.OutOfMemoryError. unable to create native thread` exception occurred.
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### What changes were proposed in this pull request?
No.
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### Why are the changes needed?
Avoid executor stucks.
The reason why executor stucked is because in `RetryingBlockTransferor#initiateRetry`
failed to create native thread when execute code `executorService.submit`.But the
member `currentListener` in `RetryingBlockTransferor` has changed before the retry
submit. But the Exception occurred in the old `currentListener`. But in `RetryingBlockTransferor.RetryingBlockTransferListener#handleBlockTransferFailure` will
judge `this == currentListener` , but `this` is the old one , so `this` not equals `currentListener`.
The `RetryingBlockTransferListener` can not forward the failure to `BlockFetchingListener` in
`ShuffleBlockFetcherIterator`. And `ShuffleBlockFetcherIterator` can not get data from `ShuffleBlockFetcherIterator#results`.
Then it happened.
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### Does this PR introduce _any_ user-facing change?
No.
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### How was this patch tested?
By orginal spark unit tests.
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No.
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[GitHub] [spark] hgs19921112 closed pull request #42572: [SPARK-44881[COMMON]Executor stucked on retrying to fetch shuffle data when `java.lang.OutOfMemoryError. unable to create native thread` exception occurred.
Posted by "hgs19921112 (via GitHub)" <gi...@apache.org>.
hgs19921112 closed pull request #42572: [SPARK-44881[COMMON]Executor stucked on retrying to fetch shuffle data when `java.lang.OutOfMemoryError. unable to create native thread` exception occurred.
URL: https://github.com/apache/spark/pull/42572
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[GitHub] [spark] hgs19921112 commented on pull request #42572: [SPARK-44881[COMMON]Executor stucked on retrying to fetch shuffle data when `java.lang.OutOfMemoryError. unable to create native thread` exception occurred.
Posted by "hgs19921112 (via GitHub)" <gi...@apache.org>.
hgs19921112 commented on PR #42572:
URL: https://github.com/apache/spark/pull/42572#issuecomment-1685202927
The reason why executor stucked is because in `RetryingBlockTransferor#initiateRetry`
failed to create native thread. But the member `currentListener` in RetryingBlockTransferor
has changed before the retry submit. But the Exception occurred in the old `currentListener`.
But int `RetryingBlockTransferor.RetryingBlockTransferListener#handleBlockTransferFailure` will
judge `this == currentListener` , but `this` is the old one , so `this` not equals `currentListener`.
Then it happed.
@mridulm
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[GitHub] [spark] hgs19921112 closed pull request #42572: [SPARK-44881[COMMON]Executor stucked on retrying to fetch shuffle data when `java.lang.OutOfMemoryError. unable to create native thread` exception occurred.
Posted by "hgs19921112 (via GitHub)" <gi...@apache.org>.
hgs19921112 closed pull request #42572: [SPARK-44881[COMMON]Executor stucked on retrying to fetch shuffle data when `java.lang.OutOfMemoryError. unable to create native thread` exception occurred.
URL: https://github.com/apache/spark/pull/42572
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[GitHub] [spark] hdaikoku commented on pull request #42572: [SPARK-44881[COMMON]Executor stucked on retrying to fetch shuffle data when `java.lang.OutOfMemoryError. unable to create native thread` exception occurred.
Posted by "hdaikoku (via GitHub)" <gi...@apache.org>.
hdaikoku commented on PR #42572:
URL: https://github.com/apache/spark/pull/42572#issuecomment-1685554405
This seems to be the same issue as https://github.com/apache/spark/pull/42426
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[GitHub] [spark] hgs19921112 commented on pull request #42572: [SPARK-44881[COMMON]Executor stucked on retrying to fetch shuffle data when `java.lang.OutOfMemoryError. unable to create native thread` exception occurred.
Posted by "hgs19921112 (via GitHub)" <gi...@apache.org>.
hgs19921112 commented on PR #42572:
URL: https://github.com/apache/spark/pull/42572#issuecomment-1685823726
> This seems to be the same issue as #42426
Yes.
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Re: [PR] [SPARK-44881[COMMON]Executor stucked on retrying to fetch shuffle data when `java.lang.OutOfMemoryError. unable to create native thread` exception occurred. [spark]
Posted by "fengDianDemaNong (via GitHub)" <gi...@apache.org>.
fengDianDemaNong commented on PR #42572:
URL: https://github.com/apache/spark/pull/42572#issuecomment-1833303013
[0.025s][warning][os,thread] Failed to start thread "Unknown thread" - pthread_create failed (EAGAIN) for attributes: stacksize: 1024k, guardsize: 0k, detached.
Error occurred during initialization of VM
java.lang.OutOfMemoryError: unable to create native thread: possibly out of memory or process/resource limits reached
/opt/spark/bin/spark-class: line 96: CMD: bad array subscript
I have also encountered this issue several times during Spark on k8s. Is there a solution
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[GitHub] [spark] mridulm commented on pull request #42572: [SPARK-44881[COMMON]Executor stucked on retrying to fetch shuffle data when `java.lang.OutOfMemoryError. unable to create native thread` exception occurred.
Posted by "mridulm (via GitHub)" <gi...@apache.org>.
mridulm commented on PR #42572:
URL: https://github.com/apache/spark/pull/42572#issuecomment-1685194014
Why would this help ? Please add more details to the description.
If this is still work in progress, please mark it as draft.
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[GitHub] [spark] hgs19921112 commented on pull request #42572: [SPARK-44881[COMMON]Executor stucked on retrying to fetch shuffle data when `java.lang.OutOfMemoryError. unable to create native thread` exception occurred.
Posted by "hgs19921112 (via GitHub)" <gi...@apache.org>.
hgs19921112 commented on PR #42572:
URL: https://github.com/apache/spark/pull/42572#issuecomment-1685202521
> Why would this help ? Please add more details to the description.
>
> If this is still work in progress, please mark it as draft.
The reason why executor stucked is because in `RetryingBlockTransferor#initiateRetry`
failed to create native thread. But the member `currentListener` in RetryingBlockTransferor
has changed before the retry submit. But the Exception occurred in the old `currentListener`.
But int `RetryingBlockTransferor.RetryingBlockTransferListener#handleBlockTransferFailure` will
judge `this == currentListener` , but `this` is the old one , so `this` not equals `currentListener`.
Then it happed.
--
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