Hi. This seem to be related to the fact that there are other threads (some custom threads) interacting with my custom bolts. Removing them "fixes" the problem.
Side note: my bolts accumulate data and at some point when new data arrive they dump this accumulated data... if no new data arrives at some point data is not dumped. That's why I had these dump forcing threads. On Fri, Dec 12, 2014 at 11:04 AM, Ernesto Reinaldo Barreiro < [email protected]> wrote: > > Hi, > > I'm relatively new to Storm, a couple of months using it. So, excuse any > stupid question I might post :-) > > I have a somewhat complex topology... At some point while developing it I > have made some change that is producing following exception > > ------------------------------------------------- > 325692 [Thread-345-disruptor-executor[32 32]-send-queue] ERROR > backtype.storm.util - Async loop died! > java.lang.RuntimeException: java.lang.NullPointerException > at > backtype.storm.utils.DisruptorQueue.consumeBatchToCursor(DisruptorQueue.java:128) > ~[storm-core-0.9.3.jar:0.9.3] > at > backtype.storm.utils.DisruptorQueue.consumeBatchWhenAvailable(DisruptorQueue.java:99) > ~[storm-core-0.9.3.jar:0.9.3] > at > backtype.storm.disruptor$consume_batch_when_available.invoke(disruptor.clj:80) > ~[storm-core-0.9.3.jar:0.9.3] > at > backtype.storm.disruptor$consume_loop_STAR_$fn__1460.invoke(disruptor.clj:94) > ~[storm-core-0.9.3.jar:0.9.3] > at backtype.storm.util$async_loop$fn__464.invoke(util.clj:463) > ~[storm-core-0.9.3.jar:0.9.3] > at clojure.lang.AFn.run(AFn.java:24) [clojure-1.5.1.jar:na] > at java.lang.Thread.run(Thread.java:745) [na:1.7.0_72] > Caused by: java.lang.NullPointerException: null > at clojure.lang.RT.intCast(RT.java:1087) ~[clojure-1.5.1.jar:na] > at > backtype.storm.daemon.worker$mk_transfer_fn$fn__3549.invoke(worker.clj:129) > ~[storm-core-0.9.3.jar:0.9.3] > at > backtype.storm.daemon.executor$start_batch_transfer__GT_worker_handler_BANG_$fn__3283.invoke(executor.clj:258) > ~[storm-core-0.9.3.jar:0.9.3] > at > backtype.storm.disruptor$clojure_handler$reify__1447.onEvent(disruptor.clj:58) > ~[storm-core-0.9.3.jar:0.9.3] > at > backtype.storm.utils.DisruptorQueue.consumeBatchToCursor(DisruptorQueue.java:125) > ~[storm-core-0.9.3.jar:0.9.3] > ... 6 common frames omitted > 325693 [Thread-345-disruptor-executor[32 32]-send-queue] ERROR > backtype.storm.daemon.executor > =================================== > > It is clearly something I have added because this was not happening before > yesterday. I was initially using 0.9.2-incubating and upgrading to 0.9.3 > gives the same behavior. Is this a know issue? I can describe more what I'm > doing if that would help find the culprit... or even try to create > quick-start project. This happens running the topology on a local > cluster... Not tested in in a production setting yet. > > -- > Regards - Ernesto Reinaldo Barreiro > -- Regards - Ernesto Reinaldo Barreiro
