[ https://issues.apache.org/jira/browse/HBASE-26327?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Duo Zhang resolved HBASE-26327. ------------------------------- Fix Version/s: 2.5.0 3.0.0-alpha-2 2.4.9 Hadoop Flags: Reviewed Resolution: Fixed > Replicas cohosted on a rack shouldn't keep triggering Balancer > -------------------------------------------------------------- > > Key: HBASE-26327 > URL: https://issues.apache.org/jira/browse/HBASE-26327 > Project: HBase > Issue Type: Sub-task > Components: Balancer > Reporter: Clara Xiong > Assignee: Clara Xiong > Priority: Major > Fix For: 2.5.0, 3.0.0-alpha-2, 2.4.9 > > > Currently, Balancer has a shortcut check for cohosted replicas of the same > region/host/rack and will keep triggering balancer if it is non-zero. > With the trending of kube and cloud solution for HBase, operators don't have > full control of the topology or are not even aware of the topology. There are > cases that it is not possible to satisfy or requires sacrificing other > constraints such as region count balancing on RS. We want to keep there per > RS/host check for availability of regions, especially for meta region. We > haven't heard problem with rack so far. The cost functions will still be > considered during balancing. -- This message was sent by Atlassian Jira (v8.20.1#820001)