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https://issues.apache.org/jira/browse/HBASE-8362?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13634311#comment-13634311
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Nicolas Liochon commented on HBASE-8362:
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I expect it will be much better. My only concern I have is for sparse multigets
when there are a lot of regions. We may hit some servers that we would not hit
with the current approach, with the risk of going to a slow/dead server. So
doing the optimization per region would solve this specific case (or doing it
per region server only).
> Possible MultiGet optimization
> ------------------------------
>
> Key: HBASE-8362
> URL: https://issues.apache.org/jira/browse/HBASE-8362
> Project: HBase
> Issue Type: Bug
> Reporter: Lars Hofhansl
>
> Currently MultiGets are executed on a RegionServer in a single thread in a
> loop that handles each Get separately (opening a scanner, seeking, etc).
> It seems we could optimize this (per region at least) by opening a single
> scanner and issue a reseek for each Get that was requested.
> I have not tested this yet and no patch, but I would like to solicit feedback
> on this idea.
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