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https://issues.apache.org/jira/browse/HDFS-5031?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kihwal Lee updated HDFS-5031:
-----------------------------
Priority: Blocker (was: Major)
Fix Version/s: (was: 2.3.0)
2.1.2-beta
3.0.0
I pulled this into branch-2.1-beta. This seems to fix HDFS-5225.
> BlockScanner scans the block multiple times and on restart scans everything
> ---------------------------------------------------------------------------
>
> Key: HDFS-5031
> URL: https://issues.apache.org/jira/browse/HDFS-5031
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: datanode
> Affects Versions: 3.0.0, 2.1.0-beta
> Reporter: Vinay
> Assignee: Vinay
> Priority: Blocker
> Fix For: 3.0.0, 2.1.2-beta
>
> Attachments: HDFS-5031.patch, HDFS-5031.patch, HDFS-5031.patch
>
>
> BlockScanner scans the block twice, also on restart of datanode scans
> everything.
> Steps:
> 1. Write blocks with interval of more than 5 seconds. write new block on
> completion of scan for written block.
> Each time datanode scans new block, it also scans, previous block which is
> already scanned.
> Now after restart, datanode scans all blocks again.
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