[
https://issues.apache.org/jira/browse/HIVE-23305?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17096795#comment-17096795
]
Ashutosh Chauhan commented on HIVE-23305:
-----------------------------------------
+1
> NullPointerException in LlapTaskSchedulerService addNode due to race condition
> ------------------------------------------------------------------------------
>
> Key: HIVE-23305
> URL: https://issues.apache.org/jira/browse/HIVE-23305
> Project: Hive
> Issue Type: Bug
> Components: Hive
> Reporter: Attila Magyar
> Assignee: Attila Magyar
> Priority: Major
> Fix For: 4.0.0
>
> Attachments: HIVE-23305.1.patch
>
>
> {code:java}
> java.lang.NullPointerException at
> org.apache.hadoop.hive.llap.tezplugins.LlapTaskSchedulerService.addNode(LlapTaskSchedulerService.java:1575)
> at
> org.apache.hadoop.hive.llap.tezplugins.LlapTaskSchedulerService.registerAndAddNode(LlapTaskSchedulerService.java:1566)
> at
> org.apache.hadoop.hive.llap.tezplugins.LlapTaskSchedulerService.access$1800(LlapTaskSchedulerService.java:128)
> at
> org.apache.hadoop.hive.llap.tezplugins.LlapTaskSchedulerService$NodeStateChangeListener.onCreate(LlapTaskSchedulerService.java:831)
> at
> org.apache.hadoop.hive.llap.tezplugins.LlapTaskSchedulerService$NodeStateChangeListener.onCreate(LlapTaskSchedulerService.java:823)
> at
> org.apache.hadoop.hive.registry.impl.ZkRegistryBase$InstanceStateChangeListener.childEvent(ZkRegistryBase.java:612)
> at {code}
> The above exception happens when a node registers too fast, before the active
> activeInstances field was initialized.
>
> The registry is started and the listener is registered before initializing
> activeInstances.
> {code:java}
> registry.start();
> registry.registerStateChangeListener(new NodeStateChangeListener());
> activeInstances = registry.getInstances(); {code}
>
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
