clojurewerkz / meltdown Goto Github PK
View Code? Open in Web Editor NEWClojure interface to Reactor, an event-driven programming and stream processing toolkit for the JVM
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sleyzerzon clojens orenra maacl jvalentini hardikus shisoft lambder bigkahuna1uk solertis etyurin phongphanmeltdown's Issues
Reactor 2+
Meltdown has at least one show stopper bug in it from Reactor v1:
E.g.: running ~4k records through a basic reactor in meltdown, at some point it'll hit this exception
ERROR compass.reactor: {:data #error {
:cause Index: 6396, Size: 3982
:via
[{:type java.lang.IllegalStateException
:message Index: 6396, Size: 3982
:at [reactor.event.dispatch.AbstractLifecycleDispatcher dispatch AbstractLifecycleDispatcher.java 150]}
{:type java.lang.IndexOutOfBoundsException
:message Index: 6396, Size: 3982
:at [java.util.ArrayList rangeCheck ArrayList.java 657]}]
:trace
[[java.util.ArrayList rangeCheck ArrayList.java 657]
[java.util.ArrayList get ArrayList.java 433]
[reactor.event.dispatch.AbstractSingleThreadDispatcher allocateRecursiveTask AbstractSingleThreadDispatcher.java 42]
[reactor.event.dispatch.AbstractLifecycleDispatcher dispatch AbstractLifecycleDispatcher.java 131]
[reactor.core.Reactor notify Reactor.java 242]
[clojurewerkz.meltdown.reactor$notify invokeStatic reactor.clj 73]
[clojurewerkz.meltdown.reactor$notify invoke reactor.clj 68]
Make the consumer in the throughput tests truly do no work.
Due to reflection, the throughput tests aren't giving the correct impression of the throughput/overhead of the library.
If you add a ^CountDownLatch type hint to the consumer:
https://github.com/clojurewerkz/meltdown/blob/master/test/clojurewerkz/meltdown/throughput_test.clj#L35
This gives me a 10x speedup using RingBufferDispatcher, and the events/second for a no-op consumer are in the millions, as advertised.
Close, cancel or something else to channel
Hello,
What do I need to do after using channel? Close, cancel or what? In my program I restart the system if some fatal error happen. So, how to I dispose the used channel?
Best Regards
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