hbase-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-7495) parallel seek in StoreScanner
Date Tue, 19 Feb 2013 18:11:13 GMT

    [ https://issues.apache.org/jira/browse/HBASE-7495?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13581490#comment-13581490
] 

Hudson commented on HBASE-7495:
-------------------------------

Integrated in HBase-TRUNK #3885 (See [https://builds.apache.org/job/HBase-TRUNK/3885/])
    HBASE-7495 parallel seek in StoreScanner (Liang Xie) (Revision 1447740)

     Result = FAILURE
tedyu : 
Files : 
* /hbase/trunk/hbase-examples/src/test/java/org/apache/hadoop/hbase/coprocessor/example/TestBulkDeleteProtocol.java
* /hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/executor/EventHandler.java
* /hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/executor/ExecutorService.java
* /hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java
* /hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/RegionServerServices.java
* /hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/StoreScanner.java
* /hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/handler/ParallelSeekHandler.java
* /hbase/trunk/hbase-server/src/main/resources/hbase-default.xml
* /hbase/trunk/hbase-server/src/test/java/org/apache/hadoop/hbase/master/MockRegionServer.java
* /hbase/trunk/hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestStoreScanner.java
* /hbase/trunk/hbase-server/src/test/java/org/apache/hadoop/hbase/util/MockRegionServerServices.java
* /hbase/trunk/hbase-server/src/test/java/org/apache/hadoop/hbase/util/TestCoprocessorScanPolicy.java

                
> parallel seek in StoreScanner
> -----------------------------
>
>                 Key: HBASE-7495
>                 URL: https://issues.apache.org/jira/browse/HBASE-7495
>             Project: HBase
>          Issue Type: Bug
>          Components: Scanners
>    Affects Versions: 0.94.3, 0.96.0
>            Reporter: Liang Xie
>            Assignee: Liang Xie
>             Fix For: 0.96.0
>
>         Attachments: 7495-v12.txt, HBASE-7495-0.94.txt, HBASE-7495.txt, HBASE-7495.txt,
HBASE-7495.txt, HBASE-7495-v10.txt, HBASE-7495-v11.txt, HBASE-7495-v2.txt, HBASE-7495-v3.txt,
HBASE-7495-v4.txt, HBASE-7495-v4.txt, HBASE-7495-v5.txt, HBASE-7495-v6.txt, HBASE-7495-v7.txt,
HBASE-7495-v8.txt, HBASE-7495-v9.txt
>
>
> seems there's a potential improvable space before doing scanner.next:
> {code:title=StoreScanner.java|borderStyle=solid}
>     if (explicitColumnQuery && lazySeekEnabledGlobally) {
>       for (KeyValueScanner scanner : scanners) {
>         scanner.requestSeek(matcher.getStartKey(), false, true);
>       }
>     } else {
>       for (KeyValueScanner scanner : scanners) {
>         scanner.seek(matcher.getStartKey());
>       }
>     }
> {code} 
> we can do scanner.requestSeek or scanner.seek in parallel, instead of current serialization,
to reduce latency for special case.
> Any ideas on it ?  I'll have a try if the comments/suggestions are positive:)

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira

Mime
View raw message