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https://issues.apache.org/jira/browse/HDFS-8821?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gautam Gopalakrishnan updated HDFS-8821:
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Status: Patch Available (was: Open)
> 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
> Attachments: HDFS-8821-1.patch
>
>
> 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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