Gautam Gopalakrishnan created HDFS-8821:
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Summary: Explain message "Operation category X is not supported in
state standby"
Key: HDFS-8821
URL: https://issues.apache.org/jira/browse/HDFS-8821
Project: Hadoop HDFS
Issue Type: Improvement
Reporter: Gautam Gopalakrishnan
Priority: Minor
There is one message specifically that causes many users to question the health
of their HDFS cluster, namely "Operation category READ/WRITE is not supported
in state standby".
HDFS-3447 is an attempt to lower the logging severity for StandbyException
related messages but it is not resolved yet. So this jira is an attempt to
explain this particular message so it appears less scary.
The text is question 3.17 in the Hadoop Wiki FAQ
ref:
https://wiki.apache.org/hadoop/FAQ#What_does_the_message_.22Operation_category_READ.2FWRITE_is_not_supported_in_state_standby.22_mean.3F
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