[jira] [Created] (APEXCORE-363) NPE in StreamingContainerManager

["Vlad Rozov (JIRA)" <ji...@apache.org>]

Vlad Rozov created APEXCORE-363:
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             Summary: NPE in StreamingContainerManager
                 Key: APEXCORE-363
                 URL: https://issues.apache.org/jira/browse/APEXCORE-363
             Project: Apache Apex Core
          Issue Type: Bug
    Affects Versions: 3.3.0, 3.2.0, 3.2.1, 3.4.0, 3.3.1
            Reporter: Vlad Rozov
            Assignee: Vlad Rozov


OperatorContext.java uses CircularBuffer to store ContainerStats.OperatorStats and when CircularBuffer becomes full it breaks single producer/single consumer contract of the CircularBuffer by calling CircularBuffer.poll() method from the thread that offers entries to the CircularBuffer. This may lead to null being inserted into a collection when CircularBuffer.drainTo() or CircularBuffer.poll() is called in a different thread.
{noformat}
java.io.IOException: java.lang.NullPointerException
        at com.datatorrent.stram.StreamingContainerManager.processHeartbeat(StreamingContainerManager.java:1563)
        at com.datatorrent.stram.StreamingContainerParent$2.run(StreamingContainerParent.java:197)
        at com.datatorrent.stram.StreamingContainerParent$2.run(StreamingContainerParent.java:193)
        at com.datatorrent.stram.util.SecureExecutor$1.run(SecureExecutor.java:38)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:356)
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1651)
        at com.datatorrent.stram.util.SecureExecutor.execute(SecureExecutor.java:35)
        at com.datatorrent.stram.StreamingContainerParent.processHeartbeat(StreamingContainerParent.java:193)
        at sun.reflect.GeneratedMethodAccessor45.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at org.apache.hadoop.ipc.WritableRpcEngine$Server$WritableRpcInvoker.call(WritableRpcEngine.java:514)
        at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1060)
        at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2044)
        at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2040)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:415)
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1671)
        at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2038)
{noformat}  



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