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From "Hudson (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-4585) Avoid next operations (and instead reseek) when current kv is deleted
Date Fri, 21 Oct 2011 10:06:32 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4585?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13132563#comment-13132563
] 

Hudson commented on HBASE-4585:
-------------------------------

Integrated in HBase-0.92 #75 (See [https://builds.apache.org/job/HBase-0.92/75/])
    HBASE-4585 Revert for 0.92, patch is for TRUNK only
HBASE-4585 - Avoid seek operation when current kv is deleted (Liyin Tang)

tedyu : 
Files : 
* /hbase/branches/0.92/CHANGES.txt
* /hbase/branches/0.92/src/main/java/org/apache/hadoop/hbase/regionserver/DeleteTracker.java
* /hbase/branches/0.92/src/main/java/org/apache/hadoop/hbase/regionserver/ScanDeleteTracker.java
* /hbase/branches/0.92/src/main/java/org/apache/hadoop/hbase/regionserver/ScanQueryMatcher.java
* /hbase/branches/0.92/src/test/java/org/apache/hadoop/hbase/regionserver/TestBlocksRead.java
* /hbase/branches/0.92/src/test/java/org/apache/hadoop/hbase/regionserver/TestScanDeleteTracker.java

ramkrishna : 
Files : 
* /hbase/branches/0.92/CHANGES.txt
* /hbase/branches/0.92/src/main/java/org/apache/hadoop/hbase/regionserver/DeleteTracker.java
* /hbase/branches/0.92/src/main/java/org/apache/hadoop/hbase/regionserver/ScanDeleteTracker.java
* /hbase/branches/0.92/src/main/java/org/apache/hadoop/hbase/regionserver/ScanQueryMatcher.java
* /hbase/branches/0.92/src/test/java/org/apache/hadoop/hbase/regionserver/TestBlocksRead.java
* /hbase/branches/0.92/src/test/java/org/apache/hadoop/hbase/regionserver/TestScanDeleteTracker.java

                
> Avoid next operations (and instead reseek) when current kv is deleted
> ---------------------------------------------------------------------
>
>                 Key: HBASE-4585
>                 URL: https://issues.apache.org/jira/browse/HBASE-4585
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Liyin Tang
>            Assignee: Liyin Tang
>             Fix For: 0.94.0
>
>         Attachments: hbase-4585-89.patch, hbase-4585-apache-trunk.patch
>
>
> When the current kv is deleted during the matching in the ScanQueryMatcher, currently
the matcher will return skip and continue to do next() instead of reseeking to the next column
of interest.
> Actually, if the current kv is deleted because of family deleted or column deleted, the
matcher should seek to next col.
> If the current kv is deleted because of version deleted, the matcher should just return
skip.

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