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Posted to issues@hbase.apache.org by "stack (JIRA)" <ji...@apache.org> on 2018/07/31 12:47:00 UTC

[jira] [Commented] (HBASE-20708) Remove the usage of RecoverMetaProcedure in master startup

    [ https://issues.apache.org/jira/browse/HBASE-20708?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16563616#comment-16563616 ] 

stack commented on HBASE-20708:
-------------------------------

Filed issue to evaluate backport to branch 2.0.2.

> Remove the usage of RecoverMetaProcedure in master startup
> ----------------------------------------------------------
>
>                 Key: HBASE-20708
>                 URL: https://issues.apache.org/jira/browse/HBASE-20708
>             Project: HBase
>          Issue Type: Bug
>          Components: proc-v2, Region Assignment
>            Reporter: Duo Zhang
>            Assignee: Duo Zhang
>            Priority: Blocker
>             Fix For: 3.0.0, 2.1.0
>
>         Attachments: HBASE-20708-v1.patch, HBASE-20708-v2.patch, HBASE-20708-v3.patch, HBASE-20708-v4.patch, HBASE-20708-v5.patch, HBASE-20708-v6.patch, HBASE-20708-v7.patch, HBASE-20708-v8.patch, HBASE-20708-v9.patch, HBASE-20708-v9.patch, HBASE-20708.patch
>
>
> In HBASE-20700, we make RecoverMetaProcedure use a special lock which is only used by RMP to avoid dead lock with MoveRegionProcedure. But we will always schedule a RMP when master starting up, so we still need to make sure that there is no race between this RMP and other RMPs and SCPs scheduled before the master restarts.
> Please see [#[accompanying design document |https://docs.google.com/document/d/1_872oHzrhJq4ck7f6zmp1J--zMhsIFvXSZyX1Mxg5MA/edit#heading=h.xy1z4alsq7uy] ]where we call out the problem being addressed by this issue in more detail and in which we describe our new approach to Master startup.



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