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https://issues.apache.org/jira/browse/HBASE-15536?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15585316#comment-15585316
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ramkrishna.s.vasudevan commented on HBASE-15536:
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bq.Oh only one DN? I haven't tested this scenario before. In general,
AsyncFSWAL will have a lower latency if you write to more than 1 DN as it sends
the data to multiple DNs concurrently.
True. That is why I just asked if 1 DN is not the right way to check this out.
I have profile reports. I can attach here if you want to have a look.
> Make AsyncFSWAL as our default WAL
> ----------------------------------
>
> Key: HBASE-15536
> URL: https://issues.apache.org/jira/browse/HBASE-15536
> Project: HBase
> Issue Type: Sub-task
> Components: wal
> Affects Versions: 2.0.0
> Reporter: Duo Zhang
> Assignee: Duo Zhang
> Priority: Critical
> Fix For: 2.0.0
>
> Attachments: HBASE-15536-v1.patch, HBASE-15536-v2.patch,
> HBASE-15536-v3.patch, HBASE-15536-v4.patch, HBASE-15536-v5.patch,
> HBASE-15536.patch
>
>
> As it should be predicated on passing basic cluster ITBLL
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