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https://issues.apache.org/jira/browse/HBASE-7495?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13581913#comment-13581913
]
Hudson commented on HBASE-7495:
-------------------------------
Integrated in HBase-TRUNK-on-Hadoop-2.0.0 #412 (See
[https://builds.apache.org/job/HBase-TRUNK-on-Hadoop-2.0.0/412/])
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：）
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