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https://issues.apache.org/jira/browse/HDFS-15127?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17018349#comment-17018349
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Íñigo Goiri commented on HDFS-15127:
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[^HDFS-15127.001.patch] takes a try to fixing the invoke concurrent method.
I need to adapt the unit tests properly.
> RBF: Do not allow writes when a subcluster is unavailable for HASH_ALL mount
> points.
> ------------------------------------------------------------------------------------
>
> Key: HDFS-15127
> URL: https://issues.apache.org/jira/browse/HDFS-15127
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Íñigo Goiri
> Assignee: Íñigo Goiri
> Priority: Major
> Attachments: HDFS-15127.000.patch, HDFS-15127.001.patch
>
>
> A HASH_ALL mount point should not allow creating new files if one subcluster
> is down.
> If the file already existed in the past, this could lead to inconsistencies.
> We should return an unavailable exception.
> {{TestRouterFaultTolerant#testWriteWithFailedSubcluster()}} needs to be
> changed.
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