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https://issues.apache.org/jira/browse/HDFS-13027?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vinayakumar B updated HDFS-13027:
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Attachment: HDFS-13027-01.patch
> Handle NPE due to deleted blocks in race condition
> --------------------------------------------------
>
> Key: HDFS-13027
> URL: https://issues.apache.org/jira/browse/HDFS-13027
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: namenode
> Reporter: Vinayakumar B
> Assignee: Vinayakumar B
> Priority: Major
> Attachments: HDFS-13027-01.patch
>
>
> Since File deletions and Block removal from BlocksMap done in separate locks,
> there are possibilities of NPE due to calls of
> {{blockManager.getBlockCollection(block)}} returning null.
> Handle all possibilities of NPEs due to this.
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