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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-4138) If zookeeper.znode.parent is not specifed explicitly in Client code then HTable object loops continuously waiting for the root region by using /hbase as the base node.
Date Fri, 29 Jul 2011 16:06:10 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4138?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13072882#comment-13072882
] 

Hudson commented on HBASE-4138:
-------------------------------

Integrated in HBase-TRUNK #2063 (See [https://builds.apache.org/job/HBase-TRUNK/2063/])
    HBASE-4138  If zookeeper.znode.parent is not specifed explicitly in Client
               code then HTable object loops continuously waiting for the root region
               by using /hbase as the base node.(ramkrishna.s.vasudevan)

tedyu : 
Files : 
* /hbase/trunk/src/main/java/org/apache/hadoop/hbase/client/HConnectionManager.java
* /hbase/trunk/src/main/java/org/apache/hadoop/hbase/zookeeper/ZooKeeperWatcher.java
* /hbase/trunk/src/test/java/org/apache/hadoop/hbase/catalog/TestCatalogTracker.java
* /hbase/trunk/CHANGES.txt
* /hbase/trunk/src/main/java/org/apache/hadoop/hbase/master/HMaster.java
* /hbase/trunk/src/main/java/org/apache/hadoop/hbase/zookeeper/ZooKeeperNodeTracker.java
* /hbase/trunk/src/test/java/org/apache/hadoop/hbase/master/TestRestartCluster.java
* /hbase/trunk/src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java
* /hbase/trunk/src/main/java/org/apache/hadoop/hbase/zookeeper/RootRegionTracker.java
* /hbase/trunk/src/test/java/org/apache/hadoop/hbase/zookeeper/TestZKTable.java
* /hbase/trunk/src/test/java/org/apache/hadoop/hbase/replication/TestReplication.java
* /hbase/trunk/src/test/java/org/apache/hadoop/hbase/regionserver/handler/TestOpenRegionHandler.java


> If zookeeper.znode.parent is not specifed explicitly in Client code then HTable object
loops continuously waiting for the root region by using /hbase as the base node.
> -----------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-4138
>                 URL: https://issues.apache.org/jira/browse/HBASE-4138
>             Project: HBase
>          Issue Type: Bug
>          Components: client
>    Affects Versions: 0.90.3
>            Reporter: ramkrishna.s.vasudevan
>            Assignee: ramkrishna.s.vasudevan
>             Fix For: 0.92.0
>
>         Attachments: HBASE-4138_trunk_1.patch, HBASE-4138_trunk_2.patch, HBASE-4138_trunk_3.patch
>
>
> Change the zookeeper.znode.parent property (default is /hbase).
> Now do not specify this change in the client code.
> Use the HTable Object.
> The HTable is not able to find the root region and keeps continuously looping.
> Find the stack trace:
> ====================
> Object.wait(long) line: not available [native method]		 
> RootRegionTracker(ZooKeeperNodeTracker).blockUntilAvailable(long) line: 122
> RootRegionTracker.waitRootRegionLocation(long) line: 73		 
> HConnectionManager$HConnectionImplementation.locateRegion(byte[],
> byte[], boolean) line: 578
> HConnectionManager$HConnectionImplementation.locateRegion(byte[],
> byte[]) line: 558
> HConnectionManager$HConnectionImplementation.locateRegionInMeta(byte[],
> byte[], byte[], boolean, Object) line: 687
> HConnectionManager$HConnectionImplementation.locateRegion(byte[],
> byte[], boolean) line: 589
> HConnectionManager$HConnectionImplementation.locateRegion(byte[],
> byte[]) line: 558
> HConnectionManager$HConnectionImplementation.locateRegionInMeta(byte[],
> byte[], byte[], boolean, Object) line: 687
> HConnectionManager$HConnectionImplementation.locateRegion(byte[],
> byte[], boolean) line: 593
> HConnectionManager$HConnectionImplementation.locateRegion(byte[],
> byte[]) line: 558
> HTable.<init>(Configuration, byte[]) line: 171		 
> HTable.<init>(Configuration, String) line: 145		 
> HBaseTest.test() line: 45

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