[ https://issues.apache.org/jira/browse/HBASE-13682?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Changgeng Li updated HBASE-13682: --------------------------------- Assignee: (was: Changgeng Li) > Compute HDFS locality in parallel. > ---------------------------------- > > Key: HBASE-13682 > URL: https://issues.apache.org/jira/browse/HBASE-13682 > Project: HBase > Issue Type: Bug > Reporter: Elliott Clark > > Right now when the balancer needs to know about region locality it asks the > cache in serial. When the cache is empty or expired it goes to the NN. > On larger clusters with lots of blocks this can be really slow. That means > that balancer is un-usable while masters are being restarted. -- This message was sent by Atlassian JIRA (v6.3.4#6332)