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https://issues.apache.org/jira/browse/HDFS-5907?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Arpit Agarwal updated HDFS-5907:
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Description:
DN changes when a rolling upgrade is in progress:
# DataNode should handle block deletions by moving block files to 'trash'.
# Block files should be restored to their original locations during a rollback.
# Purge trash during finalize.
was:
Jira to track the following:
# During a rolling upgrade the DataNode should handle block deletions by
creating hard links to the block files.
# Files must be restored during a rollback.
# Cleanup hard links during finalize.
> Handle block deletion requests during rolling upgrades
> ------------------------------------------------------
>
> Key: HDFS-5907
> URL: https://issues.apache.org/jira/browse/HDFS-5907
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: datanode
> Affects Versions: HDFS-5535 (Rolling upgrades)
> Reporter: Arpit Agarwal
> Assignee: Arpit Agarwal
> Attachments: HDFS-5907.01.patch, HDFS-5907.02.patch
>
>
> DN changes when a rolling upgrade is in progress:
> # DataNode should handle block deletions by moving block files to 'trash'.
> # Block files should be restored to their original locations during a
> rollback.
> # Purge trash during finalize.
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