[ https://issues.apache.org/jira/browse/HDFS-385?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sumadhur Reddy Bolli updated HDFS-385: -------------------------------------- Attachment: blockplacementpolicy-branch-1-win.patch blockplacementpolicy-branch-1.patch Patches to port the pluggable interface to branch-1 and branch-1-win. > Design a pluggable interface to place replicas of blocks in HDFS > ---------------------------------------------------------------- > > Key: HDFS-385 > URL: https://issues.apache.org/jira/browse/HDFS-385 > Project: Hadoop HDFS > Issue Type: Improvement > Reporter: dhruba borthakur > Assignee: dhruba borthakur > Fix For: 0.21.0 > > Attachments: BlockPlacementPluggable.txt, > BlockPlacementPluggable2.txt, BlockPlacementPluggable3.txt, > BlockPlacementPluggable4.txt, BlockPlacementPluggable4.txt, > BlockPlacementPluggable5.txt, BlockPlacementPluggable6.txt, > BlockPlacementPluggable7.txt, blockplacementpolicy-branch-1-win.patch, > blockplacementpolicy-branch-1.patch > > > The current HDFS code typically places one replica on local rack, the second > replica on remote random rack and the third replica on a random node of that > remote rack. This algorithm is baked in the NameNode's code. It would be nice > to make the block placement algorithm a pluggable interface. This will allow > experimentation of different placement algorithms based on workloads, > availability guarantees and failure models. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira