[jira] [Created] (HDFS-15254) Namenode should have a favored ssd nodes hint for ssd related storagy policy

["Zheng Wang (Jira)" <ji...@apache.org>]

Zheng Wang created HDFS-15254:
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             Summary: Namenode should have a favored ssd nodes hint for ssd related storagy policy
                 Key: HDFS-15254
                 URL: https://issues.apache.org/jira/browse/HDFS-15254
             Project: Hadoop HDFS
          Issue Type: New Feature
          Components: block placement
            Reporter: Zheng Wang


We use ONE_SSD as storagy policy in HBase,but when using bulkload
,i found it could not specify a datanode to placement the SSD replica
,so the regionserver that hold the region may only can read the local DISK replica
,because the SSD replic is in remote node.



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