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Posted to commits@pulsar.apache.org by GitBox <gi...@apache.org> on 2019/04/05 22:14:17 UTC
[GitHub] [pulsar] rdhabalia opened a new pull request #3991: [pulsar-storm]
Fix NPE while emitting next tuple
rdhabalia opened a new pull request #3991: [pulsar-storm] Fix NPE while emitting next tuple
URL: https://github.com/apache/pulsar/pull/3991
### Motivation
[PulsarSpout] removes messages from [pendingMessageRetries](https://github.com/apache/pulsar/blob/master/pulsar-storm/src/main/java/org/apache/pulsar/storm/PulsarSpout.java#L126) but it doesn't remove from the `failedMessages` queue because of that PulsarSpout throws NPE while [emitting next tuple](https://github.com/apache/pulsar/blob/master/pulsar-storm/src/main/java/org/apache/pulsar/storm/PulsarSpout.java#L181)
````
stack-trace with old pulsar-storm lib: 1.20
2019-04-05 18:49:58.240 b.s.util CmsSpout_[1 1] [INFO] Async loop Stacktrace is: {} java.lang.NullPointerException
at org.apache.pulsar.storm.PulsarSpout.emitNextAvailableTuple(PulsarSpout.java:176)
at org.apache.pulsar.storm.PulsarSpout.nextTuple(PulsarSpout.java:160)
at backtype.storm.daemon.executor$fn__7365$fn__7380$fn__7411.invoke(executor.clj:577)
at backtype.storm.util$async_loop$fn__551.invoke(util.clj:491)
at clojure.lang.AFn.run(AFn.java:22)
at java.lang.Thread.run(Thread.java:748)
```
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