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From "ade (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-9667) StorageType: SSD precede over DISK
Date Wed, 20 Jan 2016 05:11:39 GMT
ade created HDFS-9667:

             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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