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From "Ted Yu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-8063) Filter HFiles based on first/last key
Date Tue, 12 Mar 2013 17:19:50 GMT

    [ https://issues.apache.org/jira/browse/HBASE-8063?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13600203#comment-13600203
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Ted Yu commented on HBASE-8063:
-------------------------------

Patch v3 is clean.
{code}
+    for (Object type : TYPE_COUNT.keySet()) {
+        params.add(new Object[] { type, TYPE_COUNT.get(type) });
{code}
Indentation should use two spaces.

In testScannerSelection(), looks like htd is not closed.
                
> Filter HFiles based on first/last key
> -------------------------------------
>
>                 Key: HBASE-8063
>                 URL: https://issues.apache.org/jira/browse/HBASE-8063
>             Project: HBase
>          Issue Type: Improvement
>          Components: Scanners
>    Affects Versions: 0.98.0
>            Reporter: Liang Xie
>            Assignee: Liang Xie
>         Attachments: HBASE-8063.txt, HBASE-8063-v2.txt, HBASE-8063-v3.txt
>
>
> # hbase-5010 introduced a filter mechanism based on timerange hint
> # this jira is a placeholder just for keyrange hint: currently, low layer(hfile reader)
has first/last key getter methods already. we should utilize this information to pre-filte
hfiles while choosing scanners from storefiles.
> It's just a raw thought right now, no patch available yet. I'll summit a patch asap if
it's reasonable, welcome to give some suggestions/comments:)

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