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Posted to hdfs-dev@hadoop.apache.org by "Xiaoyu Yao (JIRA)" <ji...@apache.org> on 2016/01/20 20:06:40 UTC

[jira] [Resolved] (HDFS-9667) StorageType: SSD precede over DISK

     [ https://issues.apache.org/jira/browse/HDFS-9667?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Xiaoyu Yao resolved HDFS-9667.
------------------------------
    Resolution: Fixed

> StorageType: SSD precede over DISK
> ----------------------------------
>
>                 Key: HDFS-9667
>                 URL: https://issues.apache.org/jira/browse/HDFS-9667
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: namenode
>    Affects Versions: 2.6.0, 2.7.0
>            Reporter: ade
>            Assignee: ade
>             Fix For: 2.6.0
>
>         Attachments: HDFS-9667.0.patch
>
>
> We enabled the heterogeneous storage in our cluster and there are only ~50% of datanode & regionserver hosts with SSD. We set hfile with ONE_SSD storagepolicy but we found block's all replica are DISK often even local host with SSD storage. The block placement do not choose SSD first to place replica.



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