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From "Enis Soztutar (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-15131) Turn on multi-WAL by default
Date Tue, 06 Jun 2017 18:22:18 GMT

    [ https://issues.apache.org/jira/browse/HBASE-15131?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16039395#comment-16039395
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Enis Soztutar commented on HBASE-15131:
---------------------------------------

bq. The #WALs having some limit so that the data size to replay on a recovery is not too much.
So when we have multi WAL, we should take that in to account and should reduce the # WAL files
per group accordingly? Say in 2 WALs, per group 16 max?
I thought that we have removed that limit. 

> Turn on multi-WAL by default
> ----------------------------
>
>                 Key: HBASE-15131
>                 URL: https://issues.apache.org/jira/browse/HBASE-15131
>             Project: HBase
>          Issue Type: New Feature
>          Components: wal
>            Reporter: Enis Soztutar
>             Fix For: 2.0.0
>
>
> Something to discuss for 2.0 or even 1.3 or 1.4. Should we turn on multi-WAL by default
now that it has seen some production use. 
> Most of the known issues has been fixed I believe for replication, metrics etc. See HBASE-14457.

> Using bounded provider with default 4 (assuming 12 disks). Should we also look at the
number of disks from datanode dirs and auto-configure? 



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