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Andrey Stepachev commented on HBASE-12035: ------------------------------------------ [~stack] great. let's roll that into branch2 and then I'll make backport to branch1. (btw, currently there is already code for migration, just need to teach it to go to zk) > Client does an RPC to master everytime a region is relocated > ------------------------------------------------------------ > > Key: HBASE-12035 > URL: https://issues.apache.org/jira/browse/HBASE-12035 > Project: HBase > Issue Type: Improvement > Components: Client, master > Affects Versions: 2.0.0 > Reporter: Enis Soztutar > Assignee: Andrey Stepachev > Priority: Critical > Fix For: 2.0.0 > > Attachments: HBASE-12035.patch, HBASE-12035.patch, HBASE-12035.patch, > HBASE-12035.patch, HBASE-12035.patch, HBASE-12035.patch, HBASE-12035.patch, > HBASE-12035.patch, HBASE-12035.patch, HBASE-12035.patch > > > HBASE-7767 moved table enabled|disabled state to be kept in hdfs instead of > zookeeper. isTableDisabled() which is used in > HConnectionImplementation.relocateRegion() now became a master RPC call > rather than a zookeeper client call. Since we do relocateRegion() calls > everytime we want to relocate a region (region moved, RS down, etc) this > implies that when the master is down, the some of the clients for uncached > regions will be affected. > See HBASE-7767 and HBASE-11974 for some more background. -- This message was sent by Atlassian JIRA (v6.3.4#6332)