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https://issues.apache.org/jira/browse/HBASE-9769?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13802127#comment-13802127
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stack commented on HBASE-9769:
------------------------------
Patch looks good caveat above questions. It was better having the filter in
regionserver package as you originally had it -- then its access could have
been shutdown confined to where it is used. I like what [~lhofhansl] says
about "...if that the column tracker code is not efficient we should fix that
rather than circumventing it completely with a filter." Doc of this public
static could be better explaining when a user would set the attribute:
-
+ /** Scan Hints */
+ static public final String HINT_NARROW_ROWS = "_hint_narrow_rows_";
Good stuff Vladimir.
> Improve performance of a Scanner with explicit column list when rows are
> small/medium size
> ------------------------------------------------------------------------------------------
>
> Key: HBASE-9769
> URL: https://issues.apache.org/jira/browse/HBASE-9769
> Project: HBase
> Issue Type: Improvement
> Components: Scanners
> Affects Versions: 0.98.0, 0.94.12, 0.96.0
> Reporter: Vladimir Rodionov
> Assignee: Vladimir Rodionov
> Attachments: 9769-0.94-sample1.txt, 9769-0.94-sample2.txt,
> 9769-0.94-sample.txt, 9769-94.txt, 9769-94-v2.txt, 9769-trunk-v1.txt,
> 9769-trunk-v2.txt, 9769-trunk-v3.txt, 9769-trunk-v4.txt
>
>
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