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https://issues.apache.org/jira/browse/HIVE-23305?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Attila Magyar updated HIVE-23305:
---------------------------------
Description:
{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}
was:
{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.
> 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
>
>
> {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}
>
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