Daryn Sharp created HDFS-7046:
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Summary: HA NN can NPE upon transition to active
Key: HDFS-7046
URL: https://issues.apache.org/jira/browse/HDFS-7046
Project: Hadoop HDFS
Issue Type: Bug
Components: namenode
Affects Versions: 2.5.0, 3.0.0
Reporter: Daryn Sharp
Priority: Critical
While processing edits, the NN may decide after adjusting block totals to leave
safe mode - in the middle of the edit. Going active starts the secret manager
which generates a new secret key, which in turn generates an edit, which NPEs
because the edit log is not open.
# Transitions should _not_ occur in the middle of an edit.
# The edit log appears to claim it's open for write when the stream isn't even
open
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