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https://issues.apache.org/jira/browse/HDFS-7759?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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zhaoyunjiong updated HDFS-7759:
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Attachment: HDFS-7759.patch
I'll add more unit test and check the logic for upgrade and finalizeUpgrade two
weeks later.
> Provide existence-of-a-second-file implementation for pinning blocks on
> Datanode
> --------------------------------------------------------------------------------
>
> Key: HDFS-7759
> URL: https://issues.apache.org/jira/browse/HDFS-7759
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: datanode
> Reporter: zhaoyunjiong
> Assignee: zhaoyunjiong
> Attachments: HDFS-7759.patch
>
>
> Provide existence-of-a-second-file implementation for pinning blocks on
> Datanode and let admin choosing the mechanism(use sticky bit or
> existence-of-a-second-file) to pinning blocks on favored Datanode.
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