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Posted to hdfs-dev@hadoop.apache.org by "ade (JIRA)" <ji...@apache.org> on 2016/01/20 06:11:39 UTC

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

ade created HDFS-9667:
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             Summary: 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: 2.7.0, 2.6.0
            Reporter: ade
            Assignee: ade
             Fix For: 2.6.0


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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