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Posted to issues@storm.apache.org by "Stig Rohde Døssing (JIRA)" <ji...@apache.org> on 2019/04/04 07:59:00 UTC
[jira] [Created] (STORM-3372) HDFS bolt can throw NPE on shutdown
if not using a TimedRotationPolicy
Stig Rohde Døssing created STORM-3372:
-----------------------------------------
Summary: HDFS bolt can throw NPE on shutdown if not using a TimedRotationPolicy
Key: STORM-3372
URL: https://issues.apache.org/jira/browse/STORM-3372
Project: Apache Storm
Issue Type: Bug
Components: storm-hdfs
Affects Versions: 2.0.0
Reporter: Stig Rohde Døssing
{quote}42612 [SLOT_1024] ERROR o.a.s.d.s.Slot - Error when processing event
java.lang.NullPointerException: null
at org.apache.storm.hdfs.bolt.AbstractHdfsBolt.cleanup(AbstractHdfsBolt.java:261) ~[f083f1dc515311e9868bcf07babd3298.jar:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_112]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_112]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_112]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_112]
at clojure.lang.Reflector.invokeMatchingMethod(Reflector.java:93) ~[clojure-1.7.0.jar:?]
at clojure.lang.Reflector.invokeNoArgInstanceMember(Reflector.java:313) ~[clojure-1.7.0.jar:?]
at org.apache.storm.daemon.executor$fn__9739.invoke(executor.clj:878) ~[storm-core-1.2.1.3.1.0.0-78.jar:1.2.1.3.1.0.0-78]
at clojure.lang.MultiFn.invoke(MultiFn.java:233) ~[clojure-1.7.0.jar:?]
at org.apache.storm.daemon.executor$mk_executor$reify__9530.shutdown(executor.clj:437) ~[storm-core-1.2.1.3.1.0.0-78.jar:1.2.1.3.1.0.0-78]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_112]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_112]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_112]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_112]
at clojure.lang.Reflector.invokeMatchingMethod(Reflector.java:93) ~[clojure-1.7.0.jar:?]
at clojure.lang.Reflector.invokeNoArgInstanceMember(Reflector.java:313) ~[clojure-1.7.0.jar:?]
at org.apache.storm.daemon.worker$fn__10165$exec_fn__1369__auto__$reify__10167$shutdown_STAR___10187.invoke(worker.clj:684) ~[storm-core-1.2.1.3.1.0.0-78.jar:1.2.1.3.1.0.0-78]
at org.apache.storm.daemon.worker$fn__10165$exec_fn__1369__auto__$reify$reify__10213.shutdown(worker.clj:724) ~[storm-core-1.2.1.3.1.0.0-78.jar:1.2.1.3.1.0.0-78]
at org.apache.storm.ProcessSimulator.killProcess(ProcessSimulator.java:67) ~[storm-core-1.2.1.3.1.0.0-78.jar:1.2.1.3.1.0.0-78]
at org.apache.storm.daemon.supervisor.LocalContainer.kill(LocalContainer.java:69) ~[storm-core-1.2.1.3.1.0.0-78.jar:1.2.1.3.1.0.0-78]
at org.apache.storm.daemon.supervisor.Slot.killContainerForChangedAssignment(Slot.java:311) ~[storm-core-1.2.1.3.1.0.0-78.jar:1.2.1.3.1.0.0-78]
at org.apache.storm.daemon.supervisor.Slot.handleRunning(Slot.java:527) ~[storm-core-1.2.1.3.1.0.0-78.jar:1.2.1.3.1.0.0-78]
at org.apache.storm.daemon.supervisor.Slot.stateMachineStep(Slot.java:265) ~[storm-core-1.2.1.3.1.0.0-78.jar:1.2.1.3.1.0.0-78]
at org.apache.storm.daemon.supervisor.Slot.run(Slot.java:752) [storm-core-1.2.1.3.1.0.0-78.jar:1.2.1.3.1.0.0-78]{quote}
The error is due to a bug in storm-hdfs.
That variable in https://github.com/apache/storm/blob/v1.2.1/external/storm-hdfs/src/main/java/org/apache/storm/hdfs/bolt/AbstractHdfsBolt.java#L261 is only initialized if the rotation policy is a TimedRotationPolicy, which yours isn't.
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