# Logstash crash, ERROR Java heap space

**URL:** <https://discuss.elastic.co/t/logstash-crash-error-java-heap-space/65975>\
**Category:** Logstash\
**Created:** [November 14, 2016, 12:40pm UTC](https://discuss.elastic.co/t/logstash-crash-error-java-heap-space/65975 "2016-11-14T12:40:39Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![agonzalez](https://avatars.discourse-cdn.com/v4/letter/a/ba8739/32.png) [@agonzalez](https://discuss.elastic.co/u/agonzalez)\
**Post date:** [November 14, 2016, 12:40pm UTC](https://discuss.elastic.co/t/logstash-crash-error-java-heap-space/65975/1 "2016-11-14T12:40:39Z")

</div>

Logstash 5.0 crashed. Could this be insuficient memory? machine has 8GB RAM.

# free -m

```
          total used free shared buff/cache available

```

Mem: 7823 2388 1975 3 3459 5144  
Swap: 1638 524 1114

these are last logged errors.

[2016-11-13T20:02:31,551][ERROR][org.logstash.beats.BeatsHandler] Exception: Java heap space  
[root@docker02 ~]# docker logs 703ced116461 -f --tail 50  
at io.netty.channel.ChannelInboundHandlerAdapter.channelActive(ChannelInboundHandlerAdapter.java:64) [netty-all-4.1.3.Final.jar:4.1.3.Final]  
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelActive(AbstractChannelHandlerContext.java:223) [netty-all-4.1.3.Final.jar:4.1.3.Final]  
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelActive(AbstractChannelHandlerContext.java:209) [netty-all-4.1.3.Final.jar:4.1.3.Final]  
4.1.3.Final.jar:4.1.3.Final]  
at io.netty.channel.AbstractChannel$AbstractUnsafe$1.run(AbstractChannel.java:478) [netty-all-4.1.3.Final.jar:4.1.3.Final]  
at io.netty.util.concurrent.SingleThreadEventExecutor.safeExecute(SingleThreadEventExecutor.java:451) [netty-all-4.1.3.Final.jar:4.1.3.Final]  
at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:418) [netty-all-4.1.3.Final.jar:4.1.3.Final]  
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:401) [netty-all-4.1.3.Final.jar:4.1.3.Final]  
at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:877) [netty-all-4.1.3.Final.jar:4.1.3.Final]  
at io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:144) [netty-all-4.1.3.Final.jar:4.1.3.Final]  
at java.lang.Thread.run(Thread.java:745) [?:1.8.0\_91]  
[2016-11-13T20:00:35,463][WARN][io.netty.channel.AbstractChannelHandlerContext] The exceptionCaught() event that was failed to submit was:  
java.util.concurrent.RejectedExecutionException: event executor terminated  
at io.netty.util.concurrent.SingleThreadEventExecutor.reject(SingleThreadEventExecutor.java:840) ~[netty-all-4.1.3.Final.jar:4.1.3.Final]  
at io.netty.util.concurrent.SingleThreadEventExecutor.offerTask(SingleThreadEventExecutor.java:342) ~[netty-  
at io.netty.channel.AbstractChannel$AbstractUnsafe$1.run(AbstractChannel.java:478) [netty-all-4.1.3.Final.jar:4.1.3.Final]  
at io.netty.util.concurrent.SingleThreadEventExecutor.safeExecute(SingleThreadEventExecutor.java:451) [netty-all-4.1.3.Final.jar:4.1.3.Final]  
at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:418) [netty-all-4.1.3.Final.jar:4.1.3.Final]  
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:401) [netty-all-4.1.3.Final.jar:4.1.3.Final]  
at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:877) [netty-all-4.1.3.Final.jar:4.1.3.Final]  
at io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:144) [netty-all-4.1.3.Final.jar:4.1.3.Final]  
at java.lang.Thread.run(Thread.java:745) [?:1.8.0\_91]  
[2016-11-13T20:00:35,468][WARN][org.logstash.beats.Server] Channel initializer  
[2016-11-13T20:00:35,469][WARN][logstash.inputs.beats] Error when creating a connection {:exception=\>"event executor terminated"}

[2016-11-13T20:02:31,551][ERROR][org.logstash.beats.BeatsHandler] Exception: Java heap space

---

<div class="post-metadata">

**Author:** ![jsvd](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/jsvd/32/6203_2.png) [@jsvd](https://discuss.elastic.co/u/jsvd)\
**Post date:** [November 14, 2016, 3:43pm UTC](https://discuss.elastic.co/t/logstash-crash-error-java-heap-space/65975/2 "2016-11-14T15:43:32Z")

</div>

can you paste the configuration file?

have you tried opening the heap dump to check for big objects and their allocation point?

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [December 12, 2016, 3:43pm UTC](https://discuss.elastic.co/t/logstash-crash-error-java-heap-space/65975/3 "2016-12-12T15:43:54Z")

</div>

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