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https://issues.apache.org/jira/browse/HDFS-11151?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15699072#comment-15699072
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Uma Maheswara Rao G commented on HDFS-11151:
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Oh yeah you are right. We are already adding the element.
+1 on the patch.
> [SPS]: StoragePolicySatisfier should gracefully handle when there is no
> target node with the required storage type
> ------------------------------------------------------------------------------------------------------------------
>
> Key: HDFS-11151
> URL: https://issues.apache.org/jira/browse/HDFS-11151
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: datanode, namenode
> Reporter: Rakesh R
> Assignee: Rakesh R
> Attachments: HDFS-11151-HDFS-10285.00.patch
>
>
> Presently SPS is not handling a case where the failed to choose target node
> for the required storage type. In general, there are two cases:
> # For the given path, unable to find any target node for any of its blocks or
> block locations(src nodes). Means, no block movement will be scheduled
> against this path.
> # For the given path, there are few target nodes available for few block
> locations(source nodes). Means, some of the blocks or block locations(src
> nodes) under the given path will be scheduled for block movement.
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