Wei-Chiu Chuang created HDFS-11306:
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Summary: Dump remaining edit logs from buffer if edit log can't be
rolled.
Key: HDFS-11306
URL: https://issues.apache.org/jira/browse/HDFS-11306
Project: Hadoop HDFS
Issue Type: Improvement
Components: ha, namenode
Reporter: Wei-Chiu Chuang
Assignee: Wei-Chiu Chuang
In HDFS-10943 [~yzhangal] reported that edit log can not be rolled due to
unexpected edit logs lingering in the buffer.
Unable to root cause the bug, I propose that we dump the remaining edit logs in
the buffer into namenode log, before crashing namenode. Use this new capability
to find the ops that sneaks into the buffer unexpectedly, and hopefully catch
the bug.
This effort is orthogonal, but related to HDFS-11292, which adds additional
informational logs to help debug this issue.
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