Chris Nauroth created HDFS-7120:
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Summary: When aborting NameNode or JournalNode due to metadata
file problems, write the contents of the metadata directories and permissions
to logs.
Key: HDFS-7120
URL: https://issues.apache.org/jira/browse/HDFS-7120
Project: Hadoop HDFS
Issue Type: Improvement
Components: journal-node, namenode
Reporter: Chris Nauroth
Assignee: Chris Nauroth
If the NameNode or JournalNode aborts due to an unexpected error in the
metadata directories, often the root cause is that the metadata files are in an
unexpected state, or permissions are broken on the directories. This issue
proposes that during abort, we write additional information about the directory
state and permissions to the logs. This can help speed up diagnosis, and
ultimately recovery.
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