Haohui Mai created HDFS-6038:
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Summary: JournalNode hardcodes NameNodeLayoutVersion in the edit
log file
Key: HDFS-6038
URL: https://issues.apache.org/jira/browse/HDFS-6038
Project: Hadoop HDFS
Issue Type: Sub-task
Reporter: Haohui Mai
In HA setup, the JNs receive edit logs (blob) from the NN and write into edit
log files. In order to write well-formed edit log files, the JNs prepend a
header for each edit log file.
The problem is that the JN hard-codes the version (i.e.,
{{NameNodeLayoutVersion}} in the edit log, therefore it generates incorrect
edit logs when the newer release bumps the {{NameNodeLayoutVersion}} during
rolling upgrade.
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