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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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Attachment: HDFS-5907.05.patch
patch-v04-v04.diff
Thanks for reviewing this again Suresh.
I updated the patch with an E2E test case.
I am sorry for creating the extra review iterations. To make it easier I
diff'ed the v4 and v5 patches and attached the output. The changes from the
last revision are:
# Remove bad call to {{restoreBlockFilesFromTrash}} when {{trashRoot}} is
non-existent.
# Log when trash is enabled/disabled.
# Log when files are moved to trash in lieu of deletion.
# New test case and minor fix to {{MiniDFSCluster}} for the test.
There are a few more unit tests we can add for thoroughness but we can do that
later.
Thanks!
> 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,
> HDFS-5907.04.patch, HDFS-5907.05.patch, patch-v04-v04.diff
>
>
> 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 when the rolling upgrade is finalized.
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