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https://issues.apache.org/jira/browse/SPARK-37659?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17464582#comment-17464582
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Apache Spark commented on SPARK-37659:
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User 'ulysses-you' has created a pull request for this issue:
https://github.com/apache/spark/pull/35003
> Fix FsHistoryProvider race condition between list and delet log info
> --------------------------------------------------------------------
>
> Key: SPARK-37659
> URL: https://issues.apache.org/jira/browse/SPARK-37659
> Project: Spark
> Issue Type: Bug
> Components: Web UI
> Affects Versions: 3.1.2, 3.2.1, 3.3.0
> Reporter: XiDuo You
> Assignee: XiDuo You
> Priority: Major
> Fix For: 3.3.0
>
>
> After SPARK-29043, FsHistoryProvider will list the log info without waitting
> all `mergeApplicationListing` task finished.
> However the `LevelDBIterator` of list log info is not thread safe if some
> other threads delete the related log info at same time.
> There is the error msg:
> {code:java}
> 21/12/15 14:12:02 ERROR FsHistoryProvider: Exception in checking for event
> log updates
> java.util.NoSuchElementException:
> 1^@__main__^@+hdfs://xxx/application_xxx.inprogress
> at org.apache.spark.util.kvstore.LevelDB.get(LevelDB.java:132)
> at
> org.apache.spark.util.kvstore.LevelDBIterator.next(LevelDBIterator.java:137)
> at
> scala.collection.convert.Wrappers$JIteratorWrapper.next(Wrappers.scala:44)
> at scala.collection.Iterator.foreach(Iterator.scala:941)
> at scala.collection.Iterator.foreach$(Iterator.scala:941)
> at scala.collection.AbstractIterator.foreach(Iterator.scala:1429)
> at scala.collection.IterableLike.foreach(IterableLike.scala:74)
> at scala.collection.IterableLike.foreach$(IterableLike.scala:73)
> at scala.collection.AbstractIterable.foreach(Iterable.scala:56)
> at scala.collection.generic.Growable.$plus$plus$eq(Growable.scala:62)
> at scala.collection.generic.Growable.$plus$plus$eq$(Growable.scala:53)
> at
> scala.collection.mutable.ListBuffer.$plus$plus$eq(ListBuffer.scala:184)
> at
> scala.collection.mutable.ListBuffer.$plus$plus$eq(ListBuffer.scala:47)
> at scala.collection.TraversableLike.to(TraversableLike.scala:678)
> at scala.collection.TraversableLike.to$(TraversableLike.scala:675)
> at scala.collection.AbstractTraversable.to(Traversable.scala:108)
> at scala.collection.TraversableOnce.toList(TraversableOnce.scala:299)
> at scala.collection.TraversableOnce.toList$(TraversableOnce.scala:299)
> at scala.collection.AbstractTraversable.toList(Traversable.scala:108)
> at
> org.apache.spark.deploy.history.FsHistoryProvider.checkForLogs(FsHistoryProvider.scala:588)
> at
> org.apache.spark.deploy.history.FsHistoryProvider.$anonfun$startPolling$3(FsHistoryProvider.scala:299)
> {code}
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