[ https://issues.apache.org/jira/browse/HBASE-4213?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13087521#comment-13087521 ]
Ted Yu commented on HBASE-4213: ------------------------------- I think load balancer should be temporarily disabled at the beginning of instant schema change. At the end, balancer should be enabled. We should perform some testing on a table which has over 400 regions to see how long it takes for a cluster under normal load. If it is not too long, disabling balancer should be fine. > Support instant schema updates with out master's intervention (i.e with out > enable/disable and bulk assign/unassign) > -------------------------------------------------------------------------------------------------------------------- > > Key: HBASE-4213 > URL: https://issues.apache.org/jira/browse/HBASE-4213 > Project: HBase > Issue Type: Improvement > Reporter: Subbu M Iyer > Assignee: Subbu M Iyer > Fix For: 0.92.0 > > Attachments: HBASE-4213-Instant_schema_change.patch, > HBASE-4213_Instant_schema_change_-Version_2_.patch > > > This Jira is a slight variation in approach to what is being done as part of > https://issues.apache.org/jira/browse/HBASE-1730 > Support instant schema updates such as Modify Table, Add Column, Modify > Column operations: > 1. With out enable/disabling the table. > 2. With out bulk unassign/assign of regions. -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira