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Lars Hofhansl commented on HDFS-1783: ------------------------------------- Thanks Ted. Yes, I got that wrong in the first version of the patch (Dhruba had it right on Github, just me). I found that when I added the various tests. I'll be back in the US soon, and finish the HBase patch and get some performance testing done on a real cluster. > Ability for HDFS client to write replicas in parallel > ----------------------------------------------------- > > Key: HDFS-1783 > URL: https://issues.apache.org/jira/browse/HDFS-1783 > Project: Hadoop HDFS > Issue Type: Improvement > Components: hdfs client > Reporter: dhruba borthakur > Assignee: Lars Hofhansl > Attachments: HDFS-1783-trunk-v2.patch, HDFS-1783-trunk-v3.patch, > HDFS-1783-trunk-v4.patch, HDFS-1783-trunk-v5.patch, HDFS-1783-trunk.patch > > > The current implementation of HDFS pipelines the writes to the three > replicas. This introduces some latency for realtime latency sensitive > applications. An alternate implementation that allows the client to write all > replicas in parallel gives much better response times to these applications. -- 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