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Josh Elser reopened HBASE-17973: -------------------------------- Apparently I'm terrible at writing Ruby tests for HBase. Basic syntax error.. will resubmit with some more robust tests.. > Create shell command to identify regions with poor locality > ----------------------------------------------------------- > > Key: HBASE-17973 > URL: https://issues.apache.org/jira/browse/HBASE-17973 > Project: HBase > Issue Type: Improvement > Components: shell > Reporter: Josh Elser > Assignee: Josh Elser > Fix For: 2.0.0 > > Attachments: HBASE-17973.001.patch, HBASE-17973.002.patch > > > The data locality of regions often plays a large role in the efficiency of > HBase. Compactions are also expensive to execute, especially on very large > tables. The balancer can do a good job trying to maintain locality (when > tuned properly), but it is not perfect. > This creates a less-than-desirable situation where it's a costly operation to > take a cluster with spotty poor locality (e.g. a small percentage of > regionservers with poor locality). > We already have this information available via the {{ClusterStatus}} proto. > We can easily write a shell command that can present regions which are > lacking a certain percentage of locality. -- This message was sent by Atlassian JIRA (v6.3.15#6346)