# Memory issue in ES

**URL:** <https://discuss.elastic.co/t/memory-issue-in-es/54233>\
**Category:** Elasticsearch\
**Created:** [June 29, 2016, 5:27am UTC](https://discuss.elastic.co/t/memory-issue-in-es/54233 "2016-06-29T05:27:32Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![sunilmchaudhari](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/sunilmchaudhari/32/9475_2.png) [@sunilmchaudhari](https://discuss.elastic.co/u/sunilmchaudhari)\
**Post date:** [June 29, 2016, 5:27am UTC](https://discuss.elastic.co/t/memory-issue-in-es/54233/1 "2016-06-29T05:27:32Z")

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Hello,  
I face some memory issue in Elasticsearch. Below are the details.  
I am having 3 nodes cluster of ES having 8 GB memory on each node.  
in /etc/sysconfig/elasticsearch, I have given ES\_HEAP\_SIZE=2GB. It doesnt start if I set more than 2 GB.

ouot put of command $ free -m is

> ```
> total used free shared buffers cached
> 
> ```
> 
> Mem: 7872 7392 480 0 254 1404  
> -/+ buffers/cache: 5733 2139  
> Swap: 0 0 0  
> Total: 7872 7392 480

Pleas guide me what to do? I want to increase memory allocation for ES

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**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\
**Post date:** [June 30, 2016, 3:06am UTC](https://discuss.elastic.co/t/memory-issue-in-es/54233/2 "2016-06-30T03:06:11Z")

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> [@sunilmchaudhari](#):
>
> It doesnt start if I set more than 2 GB.

What do you mean? Is there anything in the logs?

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**Author:** ![sunilmchaudhari](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/sunilmchaudhari/32/9475_2.png) [@sunilmchaudhari](https://discuss.elastic.co/u/sunilmchaudhari)\
**Post date:** [June 30, 2016, 5:24am UTC](https://discuss.elastic.co/t/memory-issue-in-es/54233/3 "2016-06-30T05:24:53Z")

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Hi Mark,

Before automatic shutdown of ES, below was the error I found in error logs.

> [2016-06-28 10:55:39,102][DEBUG][action.search.type] [sit-master-data-node-0] [vsi-im-2016.05.03][1], node[NFPHRFEiTyKSMauArhy8uw], [P], s[STARTED]: Failed to execute [org.elasticsearch.action.search.SearchRequest@57b707fb] lastShard [true]  
> org.elasticsearch.transport.RemoteTransportException: [sit-data-Node-2][inet[/:9300]][indices:data/read/search[phase/query]]  
> Caused by: org.elasticsearch.common.util.concurrent.EsRejectedExecutionException: rejected execution (queue capacity 1000) on org.elasticsearch.transport.netty.MessageChannelHandler$RequestHandler@76c2f83c  
> at org.elasticsearch.common.util.concurrent.EsAbortPolicy.rejectedExecution(EsAbortPolicy.java:62)  
> at java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:821)  
> at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1372)  
> at org.elasticsearch.common.util.concurrent.EsThreadPoolExecutor.execute(EsThreadPoolExecutor.java:79)  
> at org.elasticsearch.transport.netty.MessageChannelHandler.handleRequest(MessageChannelHandler.java:222)

When I start it again, it gives me error somewhat like--\> "cannot allocate required memory (3489\*\*\*\*).........."

I could not get exact stacktrace because that error appeared on console.

br,  
Sunil

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [July 5, 2017, 10:39pm UTC](https://discuss.elastic.co/t/memory-issue-in-es/54233/4 "2017-07-05T22:39:18Z")

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