Add config option to turn off the writer preferring its local DN ----------------------------------------------------------------
Key: HDFS-2825 URL: https://issues.apache.org/jira/browse/HDFS-2825 Project: Hadoop HDFS Issue Type: Improvement Components: name-node Affects Versions: 0.23.0 Reporter: Todd Lipcon Assignee: Todd Lipcon Priority: Minor Currently, the default block placement policy always places the first replica in the pipeline on the local node if there is a valid DN running there. In some network designs, within-rack bandwidth is never constrained so this doesn't give much of an advantage. It would also be really useful to disable this for MiniDFSCluster tests, since currently if you start a multi-DN cluster and write with replication level 1, all of the replicas go to the same DN. -- 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