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https://issues.apache.org/jira/browse/HBASE-6466?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13423680#comment-13423680
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chunhui shen commented on HBASE-6466:
-------------------------------------
@Ted
In most cases, one flusher is enough, so I think we could keep One Flusher same
with before.
In our random write testing, KeyLen=50/ValueLen=1k,under the version 0.94
Without the patch, tps is about 7.5k/s where found many following logs we added:
{quote}
2012-07-18 00:31:04,133 WARN
org.apache.hadoop.hbase.regionserver.MemStoreFlusher: Memstore is above high
water mark and wait 1549ms
{quote}
After the patch, tps is about 10k/s
> Enable multi-thread for Flush
> -----------------------------
>
> Key: HBASE-6466
> URL: https://issues.apache.org/jira/browse/HBASE-6466
> Project: HBase
> Issue Type: Improvement
> Reporter: chunhui shen
> Assignee: chunhui shen
> Attachments: HBASE-6466.patch, HBASE-6466v2.patch
>
>
> If the KV is large or Hlog is closed with high-pressure putting, we found
> memstore is often above the high water mark and block the putting.
> So should we enable multi-thread for Memstore Flush?
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