Shangshu Qian created HDFS-17838:
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Summary: Potential Feedback Loop in Block Deletion
Key: HDFS-17838
URL: https://issues.apache.org/jira/browse/HDFS-17838
Project: Hadoop HDFS
Issue Type: Bug
Affects Versions: 3.4.1
Reporter: Shangshu Qian
We find a potential feedback loop involving MarkedDeleteBlockScrubber.
Delay in block deletion (BlockManager$MarkedDeleteBlockScrubber)
-> Contention causes IOException in the write pipeline
-> Due to high load caused by the block deletion, DN times out.
-> The deletion needs to be retried, causes even more delays.
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