D M Murali Krishna Reddy created AMBARI-25884:
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Summary: Set Keytab, Check keytab and Remove Keytab operations
failing on few clusters
Key: AMBARI-25884
URL: https://issues.apache.org/jira/browse/AMBARI-25884
Project: Ambari
Issue Type: Bug
Affects Versions: 2.7.6
Reporter: D M Murali Krishna Reddy
On large clusters while enabling kerberos or on running kerberos service check,
NPE is thrown on for CHECK_KEYTABS, REMOVE_KEYTAB, SET_KEYTAB
{code:java}
2023-03-06 07:22:00,538 INFO [agent-command-publisher-0]
AgentCommandsPublisher:174 - CHECK_KEYTABS called
2023-03-06 07:22:00,538 ERROR [ambari-action-scheduler]
AgentCommandsPublisher:126 - Exception on sendAgentCommand
java.util.concurrent.ExecutionException: java.lang.NullPointerException
at java.util.concurrent.ForkJoinTask.get(ForkJoinTask.java:1006)
at
org.apache.ambari.server.events.publishers.AgentCommandsPublisher.sendAgentCommand(AgentCommandsPublisher.java:124)
at
org.apache.ambari.server.actionmanager.ActionScheduler.doWork(ActionScheduler.java:555)
at
org.apache.ambari.server.actionmanager.ActionScheduler.run(ActionScheduler.java:347)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.NullPointerException
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at
java.util.concurrent.ForkJoinTask.getThrowableException(ForkJoinTask.java:598)
at java.util.concurrent.ForkJoinTask.get(ForkJoinTask.java:1005)
... 4 more
Caused by: java.lang.NullPointerException
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at
java.util.concurrent.ForkJoinTask.getThrowableException(ForkJoinTask.java:598)
at
java.util.concurrent.ForkJoinTask.reportException(ForkJoinTask.java:677)
at java.util.concurrent.ForkJoinTask.invoke(ForkJoinTask.java:735)
at
java.util.stream.ForEachOps$ForEachOp.evaluateParallel(ForEachOps.java:159)
at
java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateParallel(ForEachOps.java:173)
at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:233)
at
java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:485)
at
java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:650)
at
org.apache.ambari.server.events.publishers.AgentCommandsPublisher.lambda$sendAgentCommand$1(AgentCommandsPublisher.java:103)
at
java.util.concurrent.ForkJoinTask$AdaptedRunnableAction.exec(ForkJoinTask.java:1386)
at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
at
java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056)
at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692)
at
java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:163)
Caused by: java.lang.NullPointerException
at
org.apache.ambari.server.events.publishers.AgentCommandsPublisher.prepareExecutionCommandsClusters(AgentCommandsPublisher.java:214)
at
org.apache.ambari.server.events.publishers.AgentCommandsPublisher.populateExecutionCommandsClusters(AgentCommandsPublisher.java:192)
at
org.apache.ambari.server.events.publishers.AgentCommandsPublisher.lambda$null$0(AgentCommandsPublisher.java:122)
at
java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183)
at
com.google.common.collect.CollectSpliterators$1.lambda$forEachRemaining$1(CollectSpliterators.java:116)
at
java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1384)
at
com.google.common.collect.CollectSpliterators$1.forEachRemaining(CollectSpliterators.java:116)
at
com.google.common.collect.CollectSpliterators$1FlatMapSpliterator.lambda$forEachRemaining$1(CollectSpliterators.java:247)
at
java.util.HashMap$EntrySpliterator.forEachRemaining(HashMap.java:1699)
at
com.google.common.collect.CollectSpliterators$1FlatMapSpliterator.forEachRemaining(CollectSpliterators.java:247)
at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482)
at java.util.stream.ForEachOps$ForEachTask.compute(ForEachOps.java:290)
at java.util.concurrent.CountedCompleter.exec(CountedCompleter.java:731)
... 4 more {code}
This might be due to the using the Treemap for executionCommandsClusters
multithreading operations, so we need to update to a threadsafe datastructure
for executionCommandsClusters.
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