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From "Stephen Yuan Jiang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-14623) Implement dedicated WAL for system tables
Date Thu, 15 Oct 2015 23:24:06 GMT

    [ https://issues.apache.org/jira/browse/HBASE-14623?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14959834#comment-14959834
] 

Stephen Yuan Jiang commented on HBASE-14623:
--------------------------------------------

i think your guys are still thinking of HBASE-14190.  To me, this JIRA is independent to AssignmentManager
work, as AM would not read/write WALs and has its own WALs to deal with procedures.  

For system table has its own WAL, we would recover system table faster (fast split, fast replay).
 It would probably benefit AM on system table region assignment.  At this time, the new AM
is not planned to change WAL.   So I think the existence of this JIRA is good for overall
system, not specific to AM.

> Implement dedicated WAL for system tables
> -----------------------------------------
>
>                 Key: HBASE-14623
>                 URL: https://issues.apache.org/jira/browse/HBASE-14623
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Ted Yu
>            Assignee: Ted Yu
>             Fix For: 2.0.0
>
>         Attachments: 14623-v1.txt
>
>
> As Stephen suggested in parent JIRA, dedicating separate WAL for system tables (other
than hbase:meta) should be done in new JIRA.
> This task is to fulfill the system WAL separation.



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