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https://issues.apache.org/jira/browse/HBASE-15131?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15974038#comment-15974038
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Yu Li commented on HBASE-15131:
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I think they are two different dimensions: singleWAL v.s. multiWAL, and syncWAL
v.s. asyncWAL. We have been living with syncWAL and multiWAL online for over
two years and it proves to be stable, also some performance number (both
benchmark and online) in HBASE-14457.
And yes, would be better with asyncWAL, but no dependency between these two I
guess? (smile)
> 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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