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https://issues.apache.org/jira/browse/HBASE-8142?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13606366#comment-13606366
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Jonathan Hsieh commented on HBASE-8142:
---------------------------------------
Nice catch. I know if fixed one of these while working in the branch (I added
methods to atomically add data and the node) but may have missed this one or
not gone far enough.
> Sporadic TestZKProcedureControllers failures on trunk
> -----------------------------------------------------
>
> Key: HBASE-8142
> URL: https://issues.apache.org/jira/browse/HBASE-8142
> Project: HBase
> Issue Type: Bug
> Reporter: stack
> Assignee: Jeffrey Zhong
> Fix For: 0.95.0, 0.98.0
>
> Attachments: hase-8142_v1.patch
>
>
> See
> https://builds.apache.org/job/PreCommit-HBASE-Build/4865//artifact/trunk/hbase-server/target/surefire-reports/org.apache.hadoop.hbase.procedure.TestZKProcedureControllers.txt
> and
> https://builds.apache.org/job/PreCommit-HBASE-Build/4865//artifact/trunk/hbase-server/target/surefire-reports/org.apache.hadoop.hbase.procedure.TestZKProcedureControllers-output.txt
> I see this in the output:
> {code}
> 2013-03-18 17:30:46,672 DEBUG [Thread-2-EventThread] zookeeper.ZKUtil(1682):
> testing utility-0x13d7e8da7590000 Retrieved 0 byte(s) of data from znode
> /hbase/testSimple/acquired/instanceTest; data=empty
> 2013-03-18 17:30:46,672 DEBUG [Thread-2-EventThread]
> procedure.ZKProcedureMemberRpcs(206): start proc data length is 0
> 2013-03-18 17:30:46,672 ERROR [Thread-2-EventThread]
> procedure.ZKProcedureMemberRpcs(210): Data in for starting procuedure
> instanceTest is illegally formatted. Killing the procedure.
> 2013-03-18 17:30:46,673 ERROR [Thread-2-EventThread]
> procedure.ZKProcedureMemberRpcs(218): Illegal argument exception
> java.lang.IllegalArgumentException: Data in for starting procuedure
> instanceTest is illegally formatted. Killing the procedure.
> at
> org.apache.hadoop.hbase.procedure.ZKProcedureMemberRpcs.startNewSubprocedure(ZKProcedureMemberRpcs.java:211)
> at
> org.apache.hadoop.hbase.procedure.ZKProcedureMemberRpcs.waitForNewProcedures(ZKProcedureMemberRpcs.java:175)
> at
> org.apache.hadoop.hbase.procedure.ZKProcedureMemberRpcs.access$100(ZKProcedureMemberRpcs.java:56)
> at
> org.apache.hadoop.hbase.procedure.ZKProcedureMemberRpcs$1.nodeChildrenChanged(ZKProcedureMemberRpcs.java:109)
> at
> org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.process(ZooKeeperWatcher.java:312)
> at
> org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:519)
> at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:495)
> 2013-03-18 17:30:46,675 ERROR [Thread-2-EventThread]
> procedure.ZKProcedureMemberRpcs(281): Failed due to null subprocedure
> java.lang.IllegalArgumentException via
> expected:java.lang.IllegalArgumentException: Data in for starting procuedure
> instanceTest is illegally formatted. Killing the procedure.
> at
> org.apache.hadoop.hbase.procedure.ZKProcedureMemberRpcs.startNewSubprocedure(ZKProcedureMemberRpcs.java:219)
> at
> org.apache.hadoop.hbase.procedure.ZKProcedureMemberRpcs.waitForNewProcedures(ZKProcedureMemberRpcs.java:175)
> at
> org.apache.hadoop.hbase.procedure.ZKProcedureMemberRpcs.access$100(ZKProcedureMemberRpcs.java:56)
> at
> org.apache.hadoop.hbase.procedure.ZKProcedureMemberRpcs$1.nodeChildrenChanged(ZKProcedureMemberRpcs.java:109)
> at
> org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.process(ZooKeeperWatcher.java:312)
> at
> org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:519)
> at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:495)
> Caused by: java.lang.IllegalArgumentException: Data in for starting
> procuedure instanceTest is illegally formatted. Killing the procedure.
> at
> org.apache.hadoop.hbase.procedure.ZKProcedureMemberRpcs.startNewSubprocedure(ZKProcedureMemberRpcs.java:211)
> ... 6 more
> {code}
> The znode has zero data (Usually it has 7 bytes when test runs fine). Is
> the latch being triggered on node create before data is written? Pointers
> appreciated.
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