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https://issues.apache.org/jira/browse/HBASE-5733?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13255348#comment-13255348
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Uma Maheswara Rao G commented on HBASE-5733:
--------------------------------------------
Yeah, I just seen that in logs in real cluster with this situation. I will
remove that explicit FATAL log here.
{quote}
2012-04-17 11:18:39,353 FATAL org.apache.hadoop.hbase.master.AssignmentManager:
Problem in getting the children from ZK. Going to abort
2012-04-17 11:18:39,354 FATAL org.apache.hadoop.hbase.master.HMaster: Master
server abort: loaded coprocessors are: []
2012-04-17 11:18:39,354 FATAL org.apache.hadoop.hbase.master.HMaster: Problem
in getting the children from ZK
java.io.IOException: Failed to get the children from ZK
at
org.apache.hadoop.hbase.master.AssignmentManager.processDeadServersAndRegionsInTransition(AssignmentManager.java:398)
at
org.apache.hadoop.hbase.master.AssignmentManager.joinCluster(AssignmentManager.java:347)
at
org.apache.hadoop.hbase.master.HMaster.finishInitialization(HMaster.java:537)
at org.apache.hadoop.hbase.master.HMaster.run(HMaster.java:343)
at java.lang.Thread.run(Thread.java:662)
2012-04-17 11:18:39,355 INFO org.apache.hadoop.hbase.master.HMaster: Aborting
{quote}
> AssignmentManager#processDeadServersAndRegionsInTransition can fail with NPE.
> -----------------------------------------------------------------------------
>
> Key: HBASE-5733
> URL: https://issues.apache.org/jira/browse/HBASE-5733
> Project: HBase
> Issue Type: Bug
> Components: master
> Affects Versions: 0.96.0
> Reporter: Uma Maheswara Rao G
> Assignee: Uma Maheswara Rao G
> Attachments: HBASE-5733.patch, HBASE-5733.patch
>
>
> Found while going through the code...
> AssignmentManager#processDeadServersAndRegionsInTransition can fail with NPE
> as this is directly iterating the nodes from
> listChildrenAndWatchForNewChildren with-out checking for null.
> Here also we need to handle with null check like other places.
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