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https://issues.apache.org/jira/browse/HDFS-15815?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17358153#comment-17358153
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Ayush Saxena commented on HDFS-15815:
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No, there is no storage policy set, Just saw this in a test cluster, Just give
a check in case the cluster has only one rack, then also does this get logged
in because the replica couldn't be placed on the remote rack
> if required storageType are unavailable, log the failed reason during
> choosing Datanode
> ----------------------------------------------------------------------------------------
>
> Key: HDFS-15815
> URL: https://issues.apache.org/jira/browse/HDFS-15815
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: block placement
> Reporter: Yang Yun
> Assignee: Yang Yun
> Priority: Minor
> Labels: pull-request-available
> Fix For: 3.3.1, 3.4.0, 3.2.3
>
> Attachments: HDFS-15815.001.patch, HDFS-15815.002.patch,
> HDFS-15815.003.patch
>
> Time Spent: 1h
> Remaining Estimate: 0h
>
> For better debug, if required storageType are unavailable, log the failed
> reason "NO_REQUIRED_STORAGE_TYPE" when choosing Datanode.
>
>
>
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