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https://issues.apache.org/jira/browse/HDFS-606?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Konstantin Shvachko updated HDFS-606:
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Attachment: CMEinCorruptReplicas.patch
This is a rather obvious patch, which makes a copy of the list before iterating.
Should not require any new tests, because this condition is hardly testable at
all.
> ConcurrentModificationException in invalidateCorruptReplicas()
> --------------------------------------------------------------
>
> Key: HDFS-606
> URL: https://issues.apache.org/jira/browse/HDFS-606
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: name-node
> Affects Versions: 0.21.0
> Reporter: Konstantin Shvachko
> Assignee: Konstantin Shvachko
> Fix For: 0.21.0
>
> Attachments: CMEinCorruptReplicas.patch
>
>
> {{BlockManager.invalidateCorruptReplicas()}} iterates over
> DatanodeDescriptor-s while removing corrupt replicas from the descriptors.
> This causes {{ConcurrentModificationException}} if there is more than one
> replicas of the block. I ran into this exception debugging different
> scenarios in append, but it should be fixed in the trunk too.
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