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https://issues.apache.org/jira/browse/STORM-770?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14496146#comment-14496146
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Jungtaek Lim commented on STORM-770:
------------------------------------
I mean 'out-task-id', but never mind. It seems not related to this issue.
If you don't mind, could you provide source code snippet which includes
topology configuration (Spout / Bolt declaration) and nimbus / supervisor /
worker logs if you have?
More informations about topology DAG, grouping, fields (if you use field
grouping), emit type (direct or not), what component raises NPE (spout or
bolt), etc. are very appreciated.
> NullPointerException in consumeBatchToCursor
> --------------------------------------------
>
> Key: STORM-770
> URL: https://issues.apache.org/jira/browse/STORM-770
> Project: Apache Storm
> Issue Type: Bug
> Affects Versions: 0.9.2-incubating
> Reporter: Stas Levin
>
> We got the following exception after our topology had been up for ~2 days,
> and I was wondering if it might be related.
> Looks like "task" in "mk-transfer-fn" is null, making "(.add remote
> (TaskMessage. task (.serialize serializer tuple)))" fail on NPE
> (worker.clj:128, storm-core-0.9.2-incubating.jar)
> java.lang.RuntimeException: java.lang.NullPointerException
> at
> backtype.storm.utils.DisruptorQueue.consumeBatchToCursor(DisruptorQueue.java:128)
> ~[storm-core-0.9.2-incubating.jar:0.9.2-incubating]
> at
> backtype.storm.utils.DisruptorQueue.consumeBatchWhenAvailable(DisruptorQueue.java:99)
> ~[storm-core-0.9.2-incubating.jar:0.9.2-incubating]
> at
> backtype.storm.disruptor$consume_batch_when_available.invoke(disruptor.clj:80)
> ~[storm-core-0.9.2-incubating.jar:0.9.2-incubating]
> at
> backtype.storm.disruptor$consume_loop_STAR_$fn__758.invoke(disruptor.clj:94)
> ~[storm-core-0.9.2-incubating.jar:0.9.2-incubating]
> at backtype.storm.util$async_loop$fn__457.invoke(util.clj:431)
> ~[storm-core-0.9.2-incubating.jar:0.9.2-incubating]
> at clojure.lang.AFn.run(AFn.java:24) [clojure-1.5.1.jar:na]
> at java.lang.Thread.run(Thread.java:745) [na:1.7.0_72]
> Caused by: java.lang.NullPointerException: null
> at clojure.lang.RT.intCast(RT.java:1087) ~[clojure-1.5.1.jar:na]
> at
> backtype.storm.daemon.worker$mk_transfer_fn$fn__5748.invoke(worker.clj:128)
> ~[storm-core-0.9.2-incubating.jar:0.9.2-incubating]
> at
> backtype.storm.daemon.executor$start_batch_transfer_GT_worker_handler_BANG$fn__5483.invoke(executor.clj:256)
> ~[storm-core-0.9.2-incubating.jar:0.9.2-incubating]
> at
> backtype.storm.disruptor$clojure_handler$reify__745.onEvent(disruptor.clj:58)
> ~[storm-core-0.9.2-incubating.jar:0.9.2-incubating]
> at
> backtype.storm.utils.DisruptorQueue.consumeBatchToCursor(DisruptorQueue.java:125)
> ~[storm-core-0.9.2-incubating.jar:0.9.2-incubating]
> ... 6 common frames omitted,java.lang.RuntimeException:
> java.lang.NullPointerException
> Any ideas?
> P.S.
> Also saw it here:
> http://mail-archives.apache.org/mod_mbox/storm-user/201501.mbox/%3CCABcMBhCusXXU=v1e66wfuatgyh1euqnd1siog65-tp8xlwx...@mail.gmail.com%3E
> https://mail-archives.apache.org/mod_mbox/storm-user/201408.mbox/%3ccajuqm_4kxhsh2_x08ujuqr76m2c+dswp0fcijbmfcaeyqgs...@mail.gmail.com%3E
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