[jira] [Comment Edited] (HBASE-21338) [balancer] If balancer is an ill-fit for cluster size, it gives little indication
[ https://issues.apache.org/jira/browse/HBASE-21338?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16659815#comment-16659815 ] Xu Cang edited comment on HBASE-21338 at 10/22/18 11:30 PM: Config for this class is auto-reloadable. [https://github.com/apache/hbase/blob/master/hbase-server/src/main/java/org/apache/hadoop/hbase/master/balancer/StochasticLoadBalancer.java#L162] Also, to overcome above mentioned issue, just need to set "hbase.master.balancer.stochastic.runMaxSteps" to true. I added some logging including a WARN message when computedMaxSteps is greater than maxSteps. was (Author: xucang): Config for this class is auto-reloadable. [https://github.com/apache/hbase/blob/master/hbase-server/src/main/java/org/apache/hadoop/hbase/master/balancer/StochasticLoadBalancer.java#L162] Also, to overcome above mentioned issue, just need to set "hbase.master.balancer.stochastic.runMaxSteps" to true. I added some logging including a WARN message to code when computedMaxSteps is greater than maxSteps. > [balancer] If balancer is an ill-fit for cluster size, it gives little > indication > - > > Key: HBASE-21338 > URL: https://issues.apache.org/jira/browse/HBASE-21338 > Project: HBase > Issue Type: Sub-task > Components: Balancer >Reporter: stack >Assignee: Xu Cang >Priority: Major > Attachments: HBASE-21338.master.001.patch > > > See parent issue. Running balancer on a cluster where the max steps was way > inadequate, the balancer gave little to no indication that it was > ill-configured. In fact, it only logged its starting and then that there was > nothing to do though the cluster was obviously out-of-whack. > Ideally the balancer would complain when say the maxSteps limit is a small > fraction of what the cluster's calculated max steps are, or it would notice > that the balancer is making little progress on an imbalanced cluster and > shout. Can we set balancer configs w/o having to restart Master? -- This message was sent by Atlassian JIRA (v7.6.3#76005)
[jira] [Comment Edited] (HBASE-21338) [balancer] If balancer is an ill-fit for cluster size, it gives little indication
[ https://issues.apache.org/jira/browse/HBASE-21338?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16659815#comment-16659815 ] Xu Cang edited comment on HBASE-21338 at 10/22/18 11:26 PM: Config for this class is auto-reloadable. [https://github.com/apache/hbase/blob/master/hbase-server/src/main/java/org/apache/hadoop/hbase/master/balancer/StochasticLoadBalancer.java#L162] Also, to overcome above mentioned issue, just need to set "hbase.master.balancer.stochastic.runMaxSteps" to true. I added some logging including a WARN message to code when computedMaxSteps is greater than maxSteps. was (Author: xucang): Config for this class is auto-reloadable. [https://github.com/apache/hbase/blob/master/hbase-server/src/main/java/org/apache/hadoop/hbase/master/balancer/StochasticLoadBalancer.java#L162] Also, to overcome mentioned issue, just need to set "hbase.master.balancer.stochastic.runMaxSteps" to true. I added some logging including a WARN message to code when computedMaxSteps is greater than maxSteps. > [balancer] If balancer is an ill-fit for cluster size, it gives little > indication > - > > Key: HBASE-21338 > URL: https://issues.apache.org/jira/browse/HBASE-21338 > Project: HBase > Issue Type: Sub-task > Components: Balancer >Reporter: stack >Priority: Major > > See parent issue. Running balancer on a cluster where the max steps was way > inadequate, the balancer gave little to no indication that it was > ill-configured. In fact, it only logged its starting and then that there was > nothing to do though the cluster was obviously out-of-whack. > Ideally the balancer would complain when say the maxSteps limit is a small > fraction of what the cluster's calculated max steps are, or it would notice > that the balancer is making little progress on an imbalanced cluster and > shout. Can we set balancer configs w/o having to restart Master? -- This message was sent by Atlassian JIRA (v7.6.3#76005)
