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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-18229) create new Async Split API to embrace AM v2
Date Sat, 17 Jun 2017 04:56:01 GMT

    [ https://issues.apache.org/jira/browse/HBASE-18229?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16052683#comment-16052683
] 

stack commented on HBASE-18229:
-------------------------------

Review up on rb. Patch is great. I missed this comment:

bq. When input splitRow is null, I add a new rpc call (GetBestSplitPointResponse) instead
of add to the GetRegionInfoResponse protobuf

Is it expensive getting split point (isn't it just look up into in-memory indices?)  I was
thinking jsut add it to GetRegionInfoResponse if cheap and save an rpc (ideal distributed
cluster has 0 RPCs -- nothing can go wrong then!!)

> create new Async Split API to embrace AM v2
> -------------------------------------------
>
>                 Key: HBASE-18229
>                 URL: https://issues.apache.org/jira/browse/HBASE-18229
>             Project: HBase
>          Issue Type: Sub-task
>          Components: proc-v2
>            Reporter: Yi Liang
>            Assignee: Yi Liang
>         Attachments: HBase-18229-master-v1.patch
>
>
> See HBASE-18105 for related information,  this jira will change the logic of Path 1 in
splitProcedure, the execution path will be:
> *HBaseAdmin.splitRegionAsync -> MasterKeepAliveConnection.splitRegion  ->  MasterRpcServices.splitRegion
 ->  HMaster.splitRegion-> AssignmentManager.submitProcedure*
> Master Will no longer as Rs and then Rs turn around to ask master to do the split operation.




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