Arpit Agarwal created HDFS-5907:
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Summary: 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
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.
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