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Posted to issues@spark.apache.org by "Mridul Muralidharan (Jira)" <ji...@apache.org> on 2021/09/15 23:56:00 UTC
[jira] [Comment Edited] (SPARK-36772) FinalizeShuffleMerge fails
with an exception due to attempt id not matching
[ https://issues.apache.org/jira/browse/SPARK-36772?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17415803#comment-17415803 ]
Mridul Muralidharan edited comment on SPARK-36772 at 9/15/21, 11:55 PM:
------------------------------------------------------------------------
+CC [~Gengliang.Wang], [~Ngone51]
was (Author: mridulm80):
+CC [~Gengliang.Wang]
> FinalizeShuffleMerge fails with an exception due to attempt id not matching
> ---------------------------------------------------------------------------
>
> Key: SPARK-36772
> URL: https://issues.apache.org/jira/browse/SPARK-36772
> Project: Spark
> Issue Type: Bug
> Components: Shuffle
> Affects Versions: 3.2.0
> Reporter: Mridul Muralidharan
> Priority: Blocker
>
> As part of driver request to external shuffle services (ESS) to finalize the merge, it also passes its [application attempt id|https://github.com/apache/spark/blob/3f09093a21306b0fbcb132d4c9f285e56ac6b43c/common/network-shuffle/src/main/java/org/apache/spark/network/shuffle/ExternalBlockStoreClient.java#L180] so that ESS can validate the request is from the correct attempt.
> This attempt id is fetched from the TransportConf passed in when creating the [ExternalBlockStoreClient|https://github.com/apache/spark/blob/67421d80b8935d91b86e8cd3becb211fa2abd54f/core/src/main/scala/org/apache/spark/SparkEnv.scala#L352] - and the transport conf leverages a [cloned copy|https://github.com/apache/spark/blob/0494dc90af48ce7da0625485a4dc6917a244d580/core/src/main/scala/org/apache/spark/network/netty/SparkTransportConf.scala#L47] of the SparkConf passed to it.
> Application attempt id is set as part of SparkContext [initialization|https://github.com/apache/spark/blob/67421d80b8935d91b86e8cd3becb211fa2abd54f/core/src/main/scala/org/apache/spark/SparkContext.scala#L586].
> But this happens after driver SparkEnv has [already been created|https://github.com/apache/spark/blob/67421d80b8935d91b86e8cd3becb211fa2abd54f/core/src/main/scala/org/apache/spark/SparkContext.scala#L460].
> Hence the attempt id that ExternalBlockStoreClient uses will always end up being -1 : which will not match the attempt id at ESS (which is based on spark.app.attempt.id) : resulting in merge finalization to always fail (" java.lang.IllegalArgumentException: The attempt id -1 in this FinalizeShuffleMerge message does not match with the current attempt id 1 stored in shuffle service for application ...")
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