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stack commented on HBASE-18946: ------------------------------- The test failure is a really good one. We've exposed a latent problem in assign supposedly fixed years ago in 0.96 with HBASE-9593. See HBASE-19515 for detail. For now going to disable this failing test (fails sometimes but the test needs to be beefed up as it is a little sloppy verifying supposed fix). > Stochastic load balancer assigns replica regions to the same RS > --------------------------------------------------------------- > > Key: HBASE-18946 > URL: https://issues.apache.org/jira/browse/HBASE-18946 > Project: HBase > Issue Type: Bug > Affects Versions: 2.0.0-alpha-3 > Reporter: ramkrishna.s.vasudevan > Assignee: stack > Fix For: 2.0.0-beta-1 > > Attachments: HBASE-18946.master.001.patch, > HBASE-18946.master.002.patch, HBASE-18946.master.003.patch, > HBASE-18946.master.004.patch, HBASE-18946.master.005.patch, > HBASE-18946.master.006.patch, HBASE-18946.master.007.patch, > HBASE-18946.master.008.patch, HBASE-18946.patch, HBASE-18946.patch, > HBASE-18946_2.patch, HBASE-18946_2.patch, HBASE-18946_simple_7.patch, > HBASE-18946_simple_8.patch, TestRegionReplicasWithRestartScenarios.java > > > Trying out region replica and its assignment I can see that some times the > default LB Stocahstic load balancer assigns replica regions to the same RS. > This happens when we have 3 RS checked in and we have a table with 3 > replicas. When a RS goes down then the replicas being assigned to same RS is > acceptable but the case when we have enough RS to assign this behaviour is > undesirable and does not solve the purpose of replicas. > [~huaxiang] and [~enis]. -- This message was sent by Atlassian JIRA (v6.4.14#64029)