[jira] [Updated] (HBASE-7213) Have HLog files for .META. edits only

["Devaraj Das (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-7213?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Devaraj Das updated HBASE-7213:
-------------------------------

    Attachment: 7213-in-progress.2.patch

A more complete version. Testing in progress. This patch adds APIs to do with META in some classes (as opposed to a flag, as suggested by [~stack] earlier). The logs for META region is written in a special file ending with ".META". The SSH's process method treats META hlogs with higher priority and splits them first, and as soon as the split is done, tries to assign them, and then goes on to split other regions / assignments. I have not made changes to how the -ROOT- region is handled, and the reason is that it is very very likely the case that the -ROOT-'s region's edits are already persisted on disk (and in case folks feel that -ROOT- should be handled as well, it probably can be done in a follow up..).
                
> Have HLog files for .META. edits only
> -------------------------------------
>
>                 Key: HBASE-7213
>                 URL: https://issues.apache.org/jira/browse/HBASE-7213
>             Project: HBase
>          Issue Type: Improvement
>          Components: master, regionserver
>            Reporter: Devaraj Das
>            Assignee: Devaraj Das
>         Attachments: 7213-in-progress.2.patch, 7213-in-progress.patch
>
>
> Over on HBASE-6774, there is a discussion on separating out the edits for .META. regions from the other regions' edits w.r.t where the edits are written. This jira is to track an implementation of that.

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