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https://issues.apache.org/jira/browse/HDFS-11797?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16039608#comment-16039608
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Wei-Chiu Chuang commented on HDFS-11797:
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We see this error occurring a few times in recent months. Do you have a patch?
It's hard to reproduce and I have not yet figured out how exactly it happened.
> BlockManager#createLocatedBlocks() can throw ArrayIndexOutofBoundsException
> when corrupt replicas are inconsistent
> ------------------------------------------------------------------------------------------------------------------
>
> Key: HDFS-11797
> URL: https://issues.apache.org/jira/browse/HDFS-11797
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Kuhu Shukla
> Assignee: Kuhu Shukla
> Priority: Critical
>
> The calculation for {{numMachines}} can be too less (causing
> ArrayIndexOutOfBoundsException) or too many (causing NPE (HDFS-9958)) if data
> structures find inconsistent number of corrupt replicas. This was earlier
> found related to failed storages. This JIRA tracks a change that works for
> all possible cases of inconsistencies.
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