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https://issues.apache.org/jira/browse/HDFS-5157?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13761568#comment-13761568
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Junping Du commented on HDFS-5157:
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Hi Nicholas, Do you mean we should change parameter of DatanodeInfo[] targets
to DatanodeStorageInfo[] targets? That make great sense to me.
> Datanode should allow choosing the target storage
> -------------------------------------------------
>
> Key: HDFS-5157
> URL: https://issues.apache.org/jira/browse/HDFS-5157
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: datanode
> Affects Versions: Heterogeneous Storage (HDFS-2832)
> Reporter: Arpit Agarwal
> Assignee: Junping Du
>
> Datanode should allow should choosing a target Storage or target Storage Type
> as a parameter when creating a new block. Currently there are two ways in
> which the target volume is chosen (via {{VolumeChoosingPolicy#chooseVolume}}.
> # AvailableSpaceVolumeChoosingPolicy
> # RoundRobinVolumeChoosingPolicy
> BlockReceiver and receiveBlock should also accept a new parameter for target
> storage or storage type.
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