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https://issues.apache.org/jira/browse/HDFS-11180?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Akira Ajisaka updated HDFS-11180:
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Attachment: HDFS-11180.00.patch
Attaching a sample patch.
I'm thinking removing synchronized from FSNameSystem.getLastWrittenTxId and
FSNameSystem.getCurSegmentTxId seems problematic, so I created other methods
without locking and use them for metrics.
> Intermittent deadlock in NameNode when failover happens.
> --------------------------------------------------------
>
> Key: HDFS-11180
> URL: https://issues.apache.org/jira/browse/HDFS-11180
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 2.6.0
> Reporter: Abhishek Modi
> Labels: high-availability
> Attachments: HDFS-11180.00.patch, jstack.log
>
>
> It is happening due to metrics getting updated at the same time when failover
> is happening. Please find attached jstack at that point of time.
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