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Kihwal Lee commented on HDFS-8818: ---------------------------------- Posted a patch to HDFS-11742. Hopefully, this will prevent users from experiencing performance degradation and take the benefit of the per-target thread pool. I have test it overnight yesterday and it seems good. Now I see throughput improvement even with the default config values. > Allow Balancer to run faster > ---------------------------- > > Key: HDFS-8818 > URL: https://issues.apache.org/jira/browse/HDFS-8818 > Project: Hadoop HDFS > Issue Type: Sub-task > Components: balancer & mover > Reporter: Tsz Wo Nicholas Sze > Assignee: Tsz Wo Nicholas Sze > Fix For: 2.8.0, 2.7.4, 3.0.0-alpha1 > > Attachments: bal1.png, bal2.png, h8818_20150723.patch, > h8818_20150727.patch, HDFS-8818-branch-2.7.00.patch > > > The original design of Balancer is intentionally to make it run slowly so > that the balancing activities won't affect the normal cluster activities and > the running jobs. > There are new use case that cluster admin may choose to balance the cluster > when the cluster load is low, or in a maintain window. So that we should > have an option to allow Balancer to run faster. -- This message was sent by Atlassian JIRA (v6.3.15#6346) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org