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https://issues.apache.org/jira/browse/HBASE-5699?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13400559#comment-13400559
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Lars Hofhansl commented on HBASE-5699:
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Assuming Datanodes and RegionServers are colocated no more bits will have to
cross the (aggregate) "wires". Further assuming good load balancing within
HBase the net bandwidth is still spread over the cluster (but with lower
latency at each RegionServer).
So I do not believe that HBASE-6116 will actually hurt performance.
The key question is whether WAL writing is mostly bound by latency or bandwidth
(And I do not know.)
Do we get 35-40mb throughput from writing the WAL? If not, it is likely bound
by latency.
> Run with > 1 WAL in HRegionServer
> ---------------------------------
>
> Key: HBASE-5699
> URL: https://issues.apache.org/jira/browse/HBASE-5699
> Project: HBase
> Issue Type: Improvement
> Reporter: binlijin
> Assignee: Li Pi
> Attachments: PerfHbase.txt
>
>
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