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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-9754) Eliminate threadlocal from MVCC code
Date Sat, 19 Oct 2013 06:13:47 GMT

    [ https://issues.apache.org/jira/browse/HBASE-9754?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13799804#comment-13799804
] 

Hudson commented on HBASE-9754:
-------------------------------

SUCCESS: Integrated in HBase-TRUNK-on-Hadoop-2.0.0 #798 (See [https://builds.apache.org/job/HBase-TRUNK-on-Hadoop-2.0.0/798/])
HBASE-9754 Eliminate threadlocal from MVCC code (Ted Yu) (tedyu: rev 1533633)
* /hbase/trunk/hbase-examples/src/main/java/org/apache/hadoop/hbase/coprocessor/example/ZooKeeperScanPolicyObserver.java
* /hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.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/HStore.java
* /hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/KeyValueHeap.java
* /hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/MemStore.java
* /hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/MultiVersionConsistencyControl.java
* /hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/Store.java
* /hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/StoreFile.java
* /hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/StoreFileScanner.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/compactions/Compactor.java
* /hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/compactions/DefaultCompactor.java
* /hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/handler/ParallelSeekHandler.java
* /hbase/trunk/hbase-server/src/test/java/org/apache/hadoop/hbase/HBaseTestingUtility.java
* /hbase/trunk/hbase-server/src/test/java/org/apache/hadoop/hbase/coprocessor/TestRegionObserverScannerOpenHook.java
* /hbase/trunk/hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/HFileReadWriteTest.java
* /hbase/trunk/hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/NoOpScanPolicyObserver.java
* /hbase/trunk/hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestFSErrorsExposed.java
* /hbase/trunk/hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestHRegion.java
* /hbase/trunk/hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestMemStore.java
* /hbase/trunk/hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestMemStoreChunkPool.java
* /hbase/trunk/hbase-server/src/test/java/org/apache/hadoop/hbase/util/TestCoprocessorScanPolicy.java


> Eliminate threadlocal from MVCC code
> ------------------------------------
>
>                 Key: HBASE-9754
>                 URL: https://issues.apache.org/jira/browse/HBASE-9754
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Lars Hofhansl
>            Assignee: Ted Yu
>             Fix For: 0.98.0
>
>         Attachments: 9754-0.94.txt, 9754-0.94-v2.txt, 9754-rp-0.txt, 9754-rp-1.txt, 9754-rp-hregion.txt,
9754-rp-hregion-v2.txt, 9754-rp-hregion-v3.txt
>
>
> Brought up by [~vrodionov] and [~yuzhihong@gmail.com].
> Currently we use ThreadLocals to communicate the current readpoint between a RegionScanner
and the Store\{File}Scanner's down the stack.
> Since ThreadLocals are not cheap we should consider whether it is possible to pass the
readpoint through the call stack instead.



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