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https://issues.apache.org/jira/browse/HBASE-1935?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13108237#comment-13108237
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Lars Hofhansl commented on HBASE-1935:
--------------------------------------
Created HBASE-4439.
Thinking about this issue a bit more. The patch-idea I provided is actually
superfluous.
The same can be achieved, by just passing a Scan with start/endRow set to a
Regions start/endRow to HTable.getScanner(Scan), this also has the added
benefit of dealing with concurrent splits.
That is also how one could implement a parallel scanner with much less effort.
> Scan in parallel
> ----------------
>
> Key: HBASE-1935
> URL: https://issues.apache.org/jira/browse/HBASE-1935
> Project: HBase
> Issue Type: New Feature
> Components: coprocessors
> Reporter: stack
> Attachments: 1935-idea.txt, pscanner-v2.patch, pscanner-v3.patch,
> pscanner-v4.patch, pscanner.patch
>
>
> A scanner that rather than scan in series, instead scanned multiple regions
> in parallell would be more involved but could complete much faster
> partiularly if results are sparse.
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