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