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Tsz Wo Nicholas Sze commented on HDFS-7310: ------------------------------------------- FYI, Mover/Balancer may schedule two replicas to the same DN storage after this; see HDFS-8147 and HDFS-8204. > Mover can give first priority to local DN if it has target storage type > available in local DN > --------------------------------------------------------------------------------------------- > > Key: HDFS-7310 > URL: https://issues.apache.org/jira/browse/HDFS-7310 > Project: Hadoop HDFS > Issue Type: Improvement > Components: balancer & mover > Affects Versions: 3.0.0 > Reporter: Uma Maheswara Rao G > Assignee: Vinayakumar B > Fix For: 2.7.0 > > Attachments: HDFS-7310-001.patch, HDFS-7310-002.patch, > HDFS-7310-003.patch, HDFS-7310-004.patch > > > Currently Mover logic may move blocks to any DN which had target storage > type. But if the src DN has target storage type then mover can give highest > priority to local DN. If local DN does not contains target storage type, then > it can assign to any DN as the current logic does. > This is a thought, have not go through the code fully yet. > Thoughts? -- This message was sent by Atlassian JIRA (v6.3.4#6332)