Ahmed Hussein created HDFS-15627:
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Summary: Audit log deletes after edit is written
Key: HDFS-15627
URL: https://issues.apache.org/jira/browse/HDFS-15627
Project: Hadoop HDFS
Issue Type: Bug
Components: logging, namenode
Reporter: Ahmed Hussein
Assignee: Ahmed Hussein
Deletes currently collect blocks in the write lock, write the edit,
incrementally block delete, finally +audit log+. It should be collect blocks,
edit log, +audit log+, incremental delete. Once the edit is durable it's
consistent to audit log the delete. There is no sense in deferring the audit
into the indeterminate future.
The problem occurs when thereto server hung due to large deletes but it won't
be easy to identify the problem. That should have been easily identified as the
first delete logged after the hang.
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