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From "Zhihong Yu (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-4993) Performance regression in minicluster creation
Date Tue, 13 Dec 2011 19:48:30 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4993?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13168653#comment-13168653
] 

Zhihong Yu commented on HBASE-4993:
-----------------------------------

13 minutes after TestAdmin started to run, it seemed to hang:
{code}
"main" prio=5 tid=104000800 nid=0x100601000 in Object.wait() [1005fe000]
   java.lang.Thread.State: WAITING (on object monitor)
	at java.lang.Object.wait(Native Method)
	at java.lang.Object.wait(Object.java:485)
	at org.apache.zookeeper.ClientCnxn.submitRequest(ClientCnxn.java:1259)
	- locked <78448ef88> (a org.apache.zookeeper.ClientCnxn$Packet)
	at org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:998)
	at org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper.exists(RecoverableZooKeeper.java:154)
	at org.apache.hadoop.hbase.zookeeper.ZKUtil.watchAndCheckExists(ZKUtil.java:229)
	at org.apache.hadoop.hbase.zookeeper.ZooKeeperNodeTracker.start(ZooKeeperNodeTracker.java:76)
	- locked <78448ee80> (a org.apache.hadoop.hbase.MasterAddressTracker)
	at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.setupZookeeperTrackers(HConnectionManager.java:579)
	- locked <784467418> (a org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation)
	at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.<init>(HConnectionManager.java:568)
	at org.apache.hadoop.hbase.client.HConnectionManager.getConnection(HConnectionManager.java:185)
	- locked <790cd5d10> (a org.apache.hadoop.hbase.client.HConnectionManager$1)
	at org.apache.hadoop.hbase.client.HBaseAdmin.<init>(HBaseAdmin.java:98)
	at org.apache.hadoop.hbase.client.HBaseAdmin.checkHBaseAvailable(HBaseAdmin.java:1534)
	at org.apache.hadoop.hbase.client.TestAdmin.testCheckHBaseAvailableClosesConnection(TestAdmin.java:1485)
{code}
I ran the test on MacBook:
{code}
Darwin LM-SJN-00713032 10.8.0 Darwin Kernel Version 10.8.0: Tue Jun  7 16:32:41 PDT 2011;
root:xnu-1504.15.3~1/RELEASE_X86_64 x86_64
{code}
                
> Performance regression in minicluster creation
> ----------------------------------------------
>
>                 Key: HBASE-4993
>                 URL: https://issues.apache.org/jira/browse/HBASE-4993
>             Project: HBase
>          Issue Type: Bug
>          Components: master
>    Affects Versions: 0.94.0
>         Environment: all
>            Reporter: nkeywal
>            Assignee: nkeywal
>         Attachments: 4993.patch, 4993.v3.patch
>
>
> Side effect of 4610: the mini cluster needs 4,5 seconds to start

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