Hi Team, As you know prior to PHOENIX-1734 we are storing all local index data in separate table and colocate data and index regions. To ensure proper colocation we need customer balancer, custom split and merge logic still these will not ensure 100% colocation. That's why we started working PHOENIX-1734 to store local index data in separate column families in the same table to ensure 100% colocation.
As part of PHOENIX-1734 we need to write local index udpates to same region in preBatchMutate. When I am working with master branch(The HBase version is 1.2.x) it went smooth and I continued the development and ensure new implementation of local index works properly and committed the patch to master branch as well. But when I started porting it to other branches(HBase versions less than 1.2) I realized that write to same region is in preBatchMutate is not allowed by HBase versions less than 1.2. There is a dependency of HBASE-15600 to make the new local index implementation work properly for versions less than 1.2. So I am not able to port it to other branches. I will complete it once the next HBase point releases have HBASE-15600. Now code in master branch is not in sync with other branches but the local indexing feature is much more stable in master branch after PHOENIX-1734 so I think it would be better to have PHOENIX-1734 in master branch even porting it to other branches might delay till upcoming HBase releases available. Wdyt? Thanks, Rajeshbabu.
