# EsRejectedExecutionException

**URL:** <https://discuss.elastic.co/t/esrejectedexecutionexception/18998>\
**Category:** Elasticsearch\
**Created:** [July 31, 2014, 7:36am UTC](https://discuss.elastic.co/t/esrejectedexecutionexception/18998 "2014-07-31T07:36:47Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![Anand\_kumar](https://avatars.discourse-cdn.com/v4/letter/a/dfb087/32.png) [@Anand\_kumar](https://discuss.elastic.co/u/Anand_kumar)\
**Post date:** [July 31, 2014, 7:36am UTC](https://discuss.elastic.co/t/esrejectedexecutionexception/18998/1 "2014-07-31T07:36:47Z")

</div>

Hi All,

In my cluster, I'm having around 500 indices. When i'm trying to start the  
elasticsearch instance, its showing the following exception.  
Why its happening, what should be done to resolve it?

Thanks,  
Anand

[2014-07-31 11:50:01,551][DEBUG][action.search.type] [ESCS\_NODE]  
[components][3], node[VQMkI5CBRB2hDEnZ5yVLcw], [P], s[STARTED]: Failed to  
execute [org.elasticsearch.action.search.SearchRequest@c34bbb8] lastShard  
[true]  
org.elasticsearch.common.util.concurrent.EsRejectedExecutionException:  
rejected execution (queue capacity 1000) on  
org.elasticsearch.search.action.SearchServiceTransportAction$23@60cfc409  
at  
org.elasticsearch.common.util.concurrent.EsAbortPolicy.rejectedExecution(EsAbortPolicy.java:62)  
at  
java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:821)  
at  
java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1372)  
at  
org.elasticsearch.search.action.SearchServiceTransportAction.execute(SearchServiceTransportAction.java:509)  
at  
org.elasticsearch.search.action.SearchServiceTransportAction.sendExecuteQuery(SearchServiceTransportAction.java:203)  
at  
org.elasticsearch.action.search.type.TransportSearchQueryThenFetchAction$AsyncAction.sendExecuteFirstPhase(TransportSearchQueryThenFetchAction.java:80)  
at  
org.elasticsearch.action.search.type.TransportSearchTypeAction$BaseAsyncAction.performFirstPhase(TransportSearchTypeAction.java:171)  
at  
org.elasticsearch.action.search.type.TransportSearchTypeAction$BaseAsyncAction.start(TransportSearchTypeAction.java:153)  
at  
org.elasticsearch.action.search.type.TransportSearchQueryThenFetchAction.doExecute(TransportSearchQueryThenFetchAction.java:59)  
at  
org.elasticsearch.action.search.type.TransportSearchQueryThenFetchAction.doExecute(TransportSearchQueryThenFetchAction.java:49)  
at  
org.elasticsearch.action.support.TransportAction.execute(TransportAction.java:63)  
at  
org.elasticsearch.action.search.TransportSearchAction.doExecute(TransportSearchAction.java:101)  
at  
org.elasticsearch.action.search.TransportSearchAction.doExecute(TransportSearchAction.java:43)  
at  
org.elasticsearch.action.support.TransportAction.execute(TransportAction.java:63)  
at org.elasticsearch.client.node.NodeClient.execute(NodeClient.java:92)  
at  
org.elasticsearch.client.support.AbstractClient.search(AbstractClient.java:212)  
at  
org.elasticsearch.rest.action.search.RestSearchAction.handleRequest(RestSearchAction.java:75)  
at  
org.elasticsearch.rest.RestController.executeHandler(RestController.java:159)  
at  
org.elasticsearch.rest.RestController.dispatchRequest(RestController.java:142)  
at  
org.elasticsearch.http.HttpServer.internalDispatchRequest(HttpServer.java:121)  
at  
org.elasticsearch.http.HttpServer$Dispatcher.dispatchRequest(HttpServer.java:83)  
at  
org.elasticsearch.http.netty.NettyHttpServerTransport.dispatchRequest(NettyHttpServerTransport.java:294)  
at  
org.elasticsearch.http.netty.HttpRequestHandler.messageReceived(HttpRequestHandler.java:44)  
at  
org.elasticsearch.common.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:70)  
at  
org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)  
at  
org.elasticsearch.common.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791)  
at  
org.elasticsearch.common.netty.handler.codec.http.HttpChunkAggregator.messageReceived(HttpChunkAggregator.java:145)  
at  
org.elasticsearch.common.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:70)  
at  
org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)  
at  
org.elasticsearch.common.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791)  
at  
org.elasticsearch.common.netty.channel.Channels.fireMessageReceived(Channels.java:296)  
at  
org.elasticsearch.common.netty.handler.codec.frame.FrameDecoder.unfoldAndFireMessageReceived(FrameDecoder.java:459)  
at  
org.elasticsearch.common.netty.handler.codec.replay.ReplayingDecoder.callDecode(ReplayingDecoder.java:536)  
at  
org.elasticsearch.common.netty.handler.codec.replay.ReplayingDecoder.messageReceived(ReplayingDecoder.java:435)  
at  
org.elasticsearch.common.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:70)  
at  
org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)  
at  
org.elasticsearch.common.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791)  
at  
org.elasticsearch.common.netty.OpenChannelsHandler.handleUpstream(OpenChannelsHandler.java:74)  
at  
org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)  
at  
org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:559)  
at  
org.elasticsearch.common.netty.channel.Channels.fireMessageReceived(Channels.java:268)  
at  
org.elasticsearch.common.netty.channel.Channels.fireMessageReceived(Channels.java:255)  
at  
org.elasticsearch.common.netty.channel.socket.nio.NioWorker.read(NioWorker.java:88)  
at  
org.elasticsearch.common.netty.channel.socket.nio.AbstractNioWorker.process(AbstractNioWorker.java:108)  
at  
org.elasticsearch.common.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:318)  
at  
org.elasticsearch.common.netty.channel.socket.nio.AbstractNioWorker.run(AbstractNioWorker.java:89)  
at  
org.elasticsearch.common.netty.channel.socket.nio.NioWorker.run(NioWorker.java:178)  
at  
org.elasticsearch.common.netty.util.ThreadRenamingRunnable.run(ThreadRenamingRunnable.java:108)  
at  
org.elasticsearch.common.netty.util.internal.DeadLockProofWorker$1.run(DeadLockProofWorker.java:42)  
at  
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)  
at  
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)  
at java.lang.Thread.run(Thread.java:745)

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<div class="post-metadata">

**Author:** ![Ivan](https://avatars.discourse-cdn.com/v4/letter/i/df788c/32.png) [@Ivan](https://discuss.elastic.co/u/Ivan)\
**Post date:** [July 31, 2014, 5:11pm UTC](https://discuss.elastic.co/t/esrejectedexecutionexception/18998/2 "2014-07-31T17:11:09Z")

</div>

The thread pool will reject any search requests when there are 1000 actions  
already queued.

> **[Elasticsearch Platform — Find real-time answers at scale](https://www.elastic.co)**
>
> Power insights and outcomes with the Elasticsearch Platform and AI. See into your data and find answers that matter with enterprise solutions designed to help you build, observe, and protect. Try Elasticsearch free today.

Do you have this many search requests at one time? Do you have warmers  
and/or percolators running since you mentioned it occurred at startup?

--  
Ivan

On Thu, Jul 31, 2014 at 12:36 AM, Anand kumar [anandv1000@gmail.com](mailto:anandv1000@gmail.com) wrote:

> Hi All,
> 
> In my cluster, I'm having around 500 indices. When i'm trying to start the  
> elasticsearch instance, its showing the following exception.  
> Why its happening, what should be done to resolve it?
> 
> Thanks,  
> Anand
> 
> [2014-07-31 11:50:01,551][DEBUG][action.search.type] [ESCS\_NODE]  
> [components][3], node[VQMkI5CBRB2hDEnZ5yVLcw], [P], s[STARTED]: Failed to  
> execute [org.elasticsearch.action.search.SearchRequest@c34bbb8] lastShard  
> [true]  
> org.elasticsearch.common.util.concurrent.EsRejectedExecutionException:  
> rejected execution (queue capacity 1000) on  
> org.elasticsearch.search.action.SearchServiceTransportAction$23@60cfc409  
> at  
> org.elasticsearch.common.util.concurrent.EsAbortPolicy.rejectedExecution(EsAbortPolicy.java:62)  
> at  
> java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:821)  
> at  
> java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1372)  
> at  
> org.elasticsearch.search.action.SearchServiceTransportAction.execute(SearchServiceTransportAction.java:509)  
> at  
> org.elasticsearch.search.action.SearchServiceTransportAction.sendExecuteQuery(SearchServiceTransportAction.java:203)  
> at  
> org.elasticsearch.action.search.type.TransportSearchQueryThenFetchAction$AsyncAction.sendExecuteFirstPhase(TransportSearchQueryThenFetchAction.java:80)  
> at  
> org.elasticsearch.action.search.type.TransportSearchTypeAction$BaseAsyncAction.performFirstPhase(TransportSearchTypeAction.java:171)  
> at  
> org.elasticsearch.action.search.type.TransportSearchTypeAction$BaseAsyncAction.start(TransportSearchTypeAction.java:153)  
> at  
> org.elasticsearch.action.search.type.TransportSearchQueryThenFetchAction.doExecute(TransportSearchQueryThenFetchAction.java:59)  
> at  
> org.elasticsearch.action.search.type.TransportSearchQueryThenFetchAction.doExecute(TransportSearchQueryThenFetchAction.java:49)  
> at  
> org.elasticsearch.action.support.TransportAction.execute(TransportAction.java:63)  
> at  
> org.elasticsearch.action.search.TransportSearchAction.doExecute(TransportSearchAction.java:101)  
> at  
> org.elasticsearch.action.search.TransportSearchAction.doExecute(TransportSearchAction.java:43)  
> at  
> org.elasticsearch.action.support.TransportAction.execute(TransportAction.java:63)  
> at org.elasticsearch.client.node.NodeClient.execute(NodeClient.java:92)  
> at  
> org.elasticsearch.client.support.AbstractClient.search(AbstractClient.java:212)  
> at  
> org.elasticsearch.rest.action.search.RestSearchAction.handleRequest(RestSearchAction.java:75)  
> at  
> org.elasticsearch.rest.RestController.executeHandler(RestController.java:159)  
> at  
> org.elasticsearch.rest.RestController.dispatchRequest(RestController.java:142)  
> at  
> org.elasticsearch.http.HttpServer.internalDispatchRequest(HttpServer.java:121)  
> at  
> org.elasticsearch.http.HttpServer$Dispatcher.dispatchRequest(HttpServer.java:83)  
> at  
> org.elasticsearch.http.netty.NettyHttpServerTransport.dispatchRequest(NettyHttpServerTransport.java:294)  
> at  
> org.elasticsearch.http.netty.HttpRequestHandler.messageReceived(HttpRequestHandler.java:44)  
> at  
> org.elasticsearch.common.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:70)  
> at  
> org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)  
> at  
> org.elasticsearch.common.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791)  
> at  
> org.elasticsearch.common.netty.handler.codec.http.HttpChunkAggregator.messageReceived(HttpChunkAggregator.java:145)  
> at  
> org.elasticsearch.common.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:70)  
> at  
> org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)  
> at  
> org.elasticsearch.common.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791)  
> at  
> org.elasticsearch.common.netty.channel.Channels.fireMessageReceived(Channels.java:296)  
> at  
> org.elasticsearch.common.netty.handler.codec.frame.FrameDecoder.unfoldAndFireMessageReceived(FrameDecoder.java:459)  
> at  
> org.elasticsearch.common.netty.handler.codec.replay.ReplayingDecoder.callDecode(ReplayingDecoder.java:536)  
> at  
> org.elasticsearch.common.netty.handler.codec.replay.ReplayingDecoder.messageReceived(ReplayingDecoder.java:435)  
> at  
> org.elasticsearch.common.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:70)  
> at  
> org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)  
> at  
> org.elasticsearch.common.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791)  
> at  
> org.elasticsearch.common.netty.OpenChannelsHandler.handleUpstream(OpenChannelsHandler.java:74)  
> at  
> org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)  
> at  
> org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:559)  
> at  
> org.elasticsearch.common.netty.channel.Channels.fireMessageReceived(Channels.java:268)  
> at  
> org.elasticsearch.common.netty.channel.Channels.fireMessageReceived(Channels.java:255)  
> at  
> org.elasticsearch.common.netty.channel.socket.nio.NioWorker.read(NioWorker.java:88)  
> at  
> org.elasticsearch.common.netty.channel.socket.nio.AbstractNioWorker.process(AbstractNioWorker.java:108)  
> at  
> org.elasticsearch.common.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:318)  
> at  
> org.elasticsearch.common.netty.channel.socket.nio.AbstractNioWorker.run(AbstractNioWorker.java:89)  
> at  
> org.elasticsearch.common.netty.channel.socket.nio.NioWorker.run(NioWorker.java:178)  
> at  
> org.elasticsearch.common.netty.util.ThreadRenamingRunnable.run(ThreadRenamingRunnable.java:108)  
> at  
> org.elasticsearch.common.netty.util.internal.DeadLockProofWorker$1.run(DeadLockProofWorker.java:42)  
> at  
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)  
> at  
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)  
> at java.lang.Thread.run(Thread.java:745)
> 
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<div class="post-metadata">

**Author:** ![Anand\_kumar](https://avatars.discourse-cdn.com/v4/letter/a/dfb087/32.png) [@Anand\_kumar](https://discuss.elastic.co/u/Anand_kumar)\
**Post date:** [August 1, 2014, 12:45pm UTC](https://discuss.elastic.co/t/esrejectedexecutionexception/18998/3 "2014-08-01T12:45:14Z")

</div>

Thank you Ivan.

If so i'm having 500 indices, each splitted into 5 shards. And while  
starting the instance, it'll update each shards. In that case, will it  
create 500\*5 requests?

Also i don't have any warmer or percolator. As percolator are fixed on  
processor size, is there any chance of automatic updation on these?

Thanks again for reporting this.

On Thursday, 31 July 2014 22:41:19 UTC+5:30, Ivan Brusic wrote:

> The thread pool will reject any search requests when there are 1000  
> actions already queued.
> 
> [Elasticsearch Platform — Find real-time answers at scale | Elastic](http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/modules-threadpool.html)
> 
> Do you have this many search requests at one time? Do you have warmers  
> and/or percolators running since you mentioned it occurred at startup?
> 
> --  
> Ivan
> 
> On Thu, Jul 31, 2014 at 12:36 AM, Anand kumar \<[anand...@gmail.com](mailto:anand...@gmail.com)  
> \<javascript:\>\> wrote:
> 
> > Hi All,
> > 
> > In my cluster, I'm having around 500 indices. When i'm trying to start  
> > the elasticsearch instance, its showing the following exception.  
> > Why its happening, what should be done to resolve it?
> > 
> > Thanks,  
> > Anand
> > 
> > [2014-07-31 11:50:01,551][DEBUG][action.search.type] [ESCS\_NODE]  
> > [components][3], node[VQMkI5CBRB2hDEnZ5yVLcw], [P], s[STARTED]: Failed to  
> > execute [org.elasticsearch.action.search.SearchRequest@c34bbb8] lastShard  
> > [true]  
> > org.elasticsearch.common.util.concurrent.EsRejectedExecutionException:  
> > rejected execution (queue capacity 1000) on  
> > org.elasticsearch.search.action.SearchServiceTransportAction$23@60cfc409  
> > at  
> > org.elasticsearch.common.util.concurrent.EsAbortPolicy.rejectedExecution(EsAbortPolicy.java:62)  
> > at  
> > java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:821)  
> > at  
> > java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1372)  
> > at  
> > org.elasticsearch.search.action.SearchServiceTransportAction.execute(SearchServiceTransportAction.java:509)  
> > at  
> > org.elasticsearch.search.action.SearchServiceTransportAction.sendExecuteQuery(SearchServiceTransportAction.java:203)  
> > at  
> > org.elasticsearch.action.search.type.TransportSearchQueryThenFetchAction$AsyncAction.sendExecuteFirstPhase(TransportSearchQueryThenFetchAction.java:80)  
> > at  
> > org.elasticsearch.action.search.type.TransportSearchTypeAction$BaseAsyncAction.performFirstPhase(TransportSearchTypeAction.java:171)  
> > at  
> > org.elasticsearch.action.search.type.TransportSearchTypeAction$BaseAsyncAction.start(TransportSearchTypeAction.java:153)  
> > at  
> > org.elasticsearch.action.search.type.TransportSearchQueryThenFetchAction.doExecute(TransportSearchQueryThenFetchAction.java:59)  
> > at  
> > org.elasticsearch.action.search.type.TransportSearchQueryThenFetchAction.doExecute(TransportSearchQueryThenFetchAction.java:49)  
> > at  
> > org.elasticsearch.action.support.TransportAction.execute(TransportAction.java:63)  
> > at  
> > org.elasticsearch.action.search.TransportSearchAction.doExecute(TransportSearchAction.java:101)  
> > at  
> > org.elasticsearch.action.search.TransportSearchAction.doExecute(TransportSearchAction.java:43)  
> > at  
> > org.elasticsearch.action.support.TransportAction.execute(TransportAction.java:63)  
> > at  
> > org.elasticsearch.client.node.NodeClient.execute(NodeClient.java:92)  
> > at  
> > org.elasticsearch.client.support.AbstractClient.search(AbstractClient.java:212)  
> > at  
> > org.elasticsearch.rest.action.search.RestSearchAction.handleRequest(RestSearchAction.java:75)  
> > at  
> > org.elasticsearch.rest.RestController.executeHandler(RestController.java:159)  
> > at  
> > org.elasticsearch.rest.RestController.dispatchRequest(RestController.java:142)  
> > at  
> > org.elasticsearch.http.HttpServer.internalDispatchRequest(HttpServer.java:121)  
> > at  
> > org.elasticsearch.http.HttpServer$Dispatcher.dispatchRequest(HttpServer.java:83)  
> > at  
> > org.elasticsearch.http.netty.NettyHttpServerTransport.dispatchRequest(NettyHttpServerTransport.java:294)  
> > at  
> > org.elasticsearch.http.netty.HttpRequestHandler.messageReceived(HttpRequestHandler.java:44)  
> > at  
> > org.elasticsearch.common.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:70)  
> > at  
> > org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)  
> > at  
> > org.elasticsearch.common.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791)  
> > at  
> > org.elasticsearch.common.netty.handler.codec.http.HttpChunkAggregator.messageReceived(HttpChunkAggregator.java:145)  
> > at  
> > org.elasticsearch.common.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:70)  
> > at  
> > org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)  
> > at  
> > org.elasticsearch.common.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791)  
> > at  
> > org.elasticsearch.common.netty.channel.Channels.fireMessageReceived(Channels.java:296)  
> > at  
> > org.elasticsearch.common.netty.handler.codec.frame.FrameDecoder.unfoldAndFireMessageReceived(FrameDecoder.java:459)  
> > at  
> > org.elasticsearch.common.netty.handler.codec.replay.ReplayingDecoder.callDecode(ReplayingDecoder.java:536)  
> > at  
> > org.elasticsearch.common.netty.handler.codec.replay.ReplayingDecoder.messageReceived(ReplayingDecoder.java:435)  
> > at  
> > org.elasticsearch.common.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:70)  
> > at  
> > org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)  
> > at  
> > org.elasticsearch.common.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791)  
> > at  
> > org.elasticsearch.common.netty.OpenChannelsHandler.handleUpstream(OpenChannelsHandler.java:74)  
> > at  
> > org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)  
> > at  
> > org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:559)  
> > at  
> > org.elasticsearch.common.netty.channel.Channels.fireMessageReceived(Channels.java:268)  
> > at  
> > org.elasticsearch.common.netty.channel.Channels.fireMessageReceived(Channels.java:255)  
> > at  
> > org.elasticsearch.common.netty.channel.socket.nio.NioWorker.read(NioWorker.java:88)  
> > at  
> > org.elasticsearch.common.netty.channel.socket.nio.AbstractNioWorker.process(AbstractNioWorker.java:108)  
> > at  
> > org.elasticsearch.common.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:318)  
> > at  
> > org.elasticsearch.common.netty.channel.socket.nio.AbstractNioWorker.run(AbstractNioWorker.java:89)  
> > at  
> > org.elasticsearch.common.netty.channel.socket.nio.NioWorker.run(NioWorker.java:178)  
> > at  
> > org.elasticsearch.common.netty.util.ThreadRenamingRunnable.run(ThreadRenamingRunnable.java:108)  
> > at  
> > org.elasticsearch.common.netty.util.internal.DeadLockProofWorker$1.run(DeadLockProofWorker.java:42)  
> > at  
> > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)  
> > at  
> > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)  
> > at java.lang.Thread.run(Thread.java:745)
> > 
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<div class="post-metadata">

**Author:** ![Ivan](https://avatars.discourse-cdn.com/v4/letter/i/df788c/32.png) [@Ivan](https://discuss.elastic.co/u/Ivan)\
**Post date:** [August 1, 2014, 4:34pm UTC](https://discuss.elastic.co/t/esrejectedexecutionexception/18998/4 "2014-08-01T16:34:55Z")

</div>

Your stack trace indicates that your search pool was exhausted, not your  
admin action thread pool. I don't think that restarting servers will cause  
searches to execute, but hopefully someone else would chime in and correct  
me. Do you have that many searches going on?

--  
Ivan

On Fri, Aug 1, 2014 at 5:45 AM, Anand kumar [anandv1000@gmail.com](mailto:anandv1000@gmail.com) wrote:

> Thank you Ivan.
> 
> If so i'm having 500 indices, each splitted into 5 shards. And while  
> starting the instance, it'll update each shards. In that case, will it  
> create 500\*5 requests?
> 
> Also i don't have any warmer or percolator. As percolator are fixed on  
> processor size, is there any chance of automatic updation on these?
> 
> Thanks again for reporting this.
> 
> On Thursday, 31 July 2014 22:41:19 UTC+5:30, Ivan Brusic wrote:
> 
> > The thread pool will reject any search requests when there are 1000  
> > actions already queued.
> > 
> > [Elasticsearch Platform — Find real-time answers at scale | Elastic](http://www.elasticsearch.org/guide/en/elasticsearch/)  
> > reference/current/modules-threadpool.html
> > 
> > Do you have this many search requests at one time? Do you have warmers  
> > and/or percolators running since you mentioned it occurred at startup?
> > 
> > --  
> > Ivan
> > 
> > On Thu, Jul 31, 2014 at 12:36 AM, Anand kumar [anand...@gmail.com](mailto:anand...@gmail.com) wrote:
> > 
> > > Hi All,
> > > 
> > > In my cluster, I'm having around 500 indices. When i'm trying to start  
> > > the elasticsearch instance, its showing the following exception.  
> > > Why its happening, what should be done to resolve it?
> > > 
> > > Thanks,  
> > > Anand
> > > 
> > > [2014-07-31 11:50:01,551][DEBUG][action.search.type] [ESCS\_NODE]  
> > > [components][3], node[VQMkI5CBRB2hDEnZ5yVLcw], [P], s[STARTED]: Failed to  
> > > execute [org.elasticsearch.action.search.SearchRequest@c34bbb8]  
> > > lastShard [true]  
> > > org.elasticsearch.common.util.concurrent.EsRejectedExecutionException:  
> > > rejected execution (queue capacity 1000) on org.elasticsearch.search.  
> > > action.SearchServiceTransportAction$23@60cfc409  
> > > at org.elasticsearch.common.util.concurrent.EsAbortPolicy.  
> > > rejectedExecution(EsAbortPolicy.java:62)  
> > > at java.util.concurrent.ThreadPoolExecutor.reject(  
> > > ThreadPoolExecutor.java:821)  
> > > at java.util.concurrent.ThreadPoolExecutor.execute(  
> > > ThreadPoolExecutor.java:1372)  
> > > at org.elasticsearch.search.action.SearchServiceTransportAction.  
> > > execute(SearchServiceTransportAction.java:509)  
> > > at org.elasticsearch.search.action.SearchServiceTransportAction.  
> > > sendExecuteQuery(SearchServiceTransportAction.java:203)  
> > > at org.elasticsearch.action.search.type.  
> > > TransportSearchQueryThenFetchAction$AsyncAction.sendExecuteFirstPhase(  
> > > TransportSearchQueryThenFetchAction.java:80)  
> > > at org.elasticsearch.action.search.type.TransportSearchTypeAction$  
> > > BaseAsyncAction.performFirstPhase(TransportSearchTypeAction.java:171)  
> > > at org.elasticsearch.action.search.type.TransportSearchTypeAction$  
> > > BaseAsyncAction.start(TransportSearchTypeAction.java:153)  
> > > at org.elasticsearch.action.search.type.  
> > > TransportSearchQueryThenFetchAction.doExecute(  
> > > TransportSearchQueryThenFetchAction.java:59)  
> > > at org.elasticsearch.action.search.type.  
> > > TransportSearchQueryThenFetchAction.doExecute(  
> > > TransportSearchQueryThenFetchAction.java:49)  
> > > at org.elasticsearch.action.support.TransportAction.  
> > > execute(TransportAction.java:63)  
> > > at org.elasticsearch.action.search.TransportSearchAction.doExecute(  
> > > TransportSearchAction.java:101)  
> > > at org.elasticsearch.action.search.TransportSearchAction.doExecute(  
> > > TransportSearchAction.java:43)  
> > > at org.elasticsearch.action.support.TransportAction.  
> > > execute(TransportAction.java:63)  
> > > at org.elasticsearch.client.node.NodeClient.execute(NodeClient.  
> > > java:92)  
> > > at org.elasticsearch.client.support.AbstractClient.search(  
> > > AbstractClient.java:212)  
> > > at org.elasticsearch.rest.action.search.RestSearchAction.  
> > > handleRequest(RestSearchAction.java:75)  
> > > at org.elasticsearch.rest.RestController.executeHandler(  
> > > RestController.java:159)  
> > > at org.elasticsearch.rest.RestController.dispatchRequest(  
> > > RestController.java:142)  
> > > at org.elasticsearch.http.HttpServer.internalDispatchRequest(  
> > > HttpServer.java:121)  
> > > at org.elasticsearch.http.HttpServer$Dispatcher.  
> > > dispatchRequest(HttpServer.java:83)  
> > > at org.elasticsearch.http.netty.NettyHttpServerTransport.  
> > > dispatchRequest(NettyHttpServerTransport.java:294)  
> > > at org.elasticsearch.http.netty.HttpRequestHandler.messageReceived(  
> > > HttpRequestHandler.java:44)  
> > > at org.elasticsearch.common.netty.channel.  
> > > SimpleChannelUpstreamHandler.handleUpstream(  
> > > SimpleChannelUpstreamHandler.java:70)  
> > > at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.  
> > > sendUpstream(DefaultChannelPipeline.java:564)  
> > > at org.elasticsearch.common.netty.channel.DefaultChannelPipeline$  
> > > DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:  
> > > 791)  
> > > at org.elasticsearch.common.netty.handler.codec.http.  
> > > HttpChunkAggregator.messageReceived(HttpChunkAggregator.java:145)  
> > > at org.elasticsearch.common.netty.channel.  
> > > SimpleChannelUpstreamHandler.handleUpstream(  
> > > SimpleChannelUpstreamHandler.java:70)  
> > > at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.  
> > > sendUpstream(DefaultChannelPipeline.java:564)  
> > > at org.elasticsearch.common.netty.channel.DefaultChannelPipeline$  
> > > DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:  
> > > 791)  
> > > at org.elasticsearch.common.netty.channel.Channels.  
> > > fireMessageReceived(Channels.java:296)  
> > > at org.elasticsearch.common.netty.handler.codec.frame.FrameDecoder.  
> > > unfoldAndFireMessageReceived(FrameDecoder.java:459)  
> > > at org.elasticsearch.common.netty.handler.codec.replay.  
> > > ReplayingDecoder.callDecode(ReplayingDecoder.java:536)  
> > > at org.elasticsearch.common.netty.handler.codec.replay.  
> > > ReplayingDecoder.messageReceived(ReplayingDecoder.java:435)  
> > > at org.elasticsearch.common.netty.channel.  
> > > SimpleChannelUpstreamHandler.handleUpstream(  
> > > SimpleChannelUpstreamHandler.java:70)  
> > > at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.  
> > > sendUpstream(DefaultChannelPipeline.java:564)  
> > > at org.elasticsearch.common.netty.channel.DefaultChannelPipeline$  
> > > DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:  
> > > 791)  
> > > at org.elasticsearch.common.netty.OpenChannelsHandler.  
> > > handleUpstream(OpenChannelsHandler.java:74)  
> > > at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.  
> > > sendUpstream(DefaultChannelPipeline.java:564)  
> > > at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.  
> > > sendUpstream(DefaultChannelPipeline.java:559)  
> > > at org.elasticsearch.common.netty.channel.Channels.  
> > > fireMessageReceived(Channels.java:268)  
> > > at org.elasticsearch.common.netty.channel.Channels.  
> > > fireMessageReceived(Channels.java:255)  
> > > at org.elasticsearch.common.netty.channel.socket.nio.  
> > > NioWorker.read(NioWorker.java:88)  
> > > at org.elasticsearch.common.netty.channel.socket.nio.  
> > > AbstractNioWorker.process(AbstractNioWorker.java:108)  
> > > at org.elasticsearch.common.netty.channel.socket.nio.  
> > > AbstractNioSelector.run(AbstractNioSelector.java:318)  
> > > at org.elasticsearch.common.netty.channel.socket.nio.  
> > > AbstractNioWorker.run(AbstractNioWorker.java:89)  
> > > at org.elasticsearch.common.netty.channel.socket.nio.  
> > > NioWorker.run(NioWorker.java:178)  
> > > at org.elasticsearch.common.netty.util.ThreadRenamingRunnable.run(  
> > > ThreadRenamingRunnable.java:108)  
> > > at org.elasticsearch.common.netty.util.internal.  
> > > DeadLockProofWorker$1.run(DeadLockProofWorker.java:42)  
> > > at java.util.concurrent.ThreadPoolExecutor.runWorker(  
> > > ThreadPoolExecutor.java:1145)  
> > > at java.util.concurrent.ThreadPoolExecutor$Worker.run(  
> > > ThreadPoolExecutor.java:615)  
> > > at java.lang.Thread.run(Thread.java:745)
> > > 
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<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:** [July 6, 2017, 1:11am UTC](https://discuss.elastic.co/t/esrejectedexecutionexception/18998/5 "2017-07-06T01:11:36Z")

</div>