Add non existing settings in cluster settings in elasticsearch

[Ayman]

Hi there, 

Recently i have built elasticsearch with fluentd and Kibana and all is
working fine, but we are facing high cpu load while performing search caused
by java. 

I have 60 GB Ram and 16 processors and each processor has 2 cores. 

ES_HEAP_SIZE=32g 
-find below more details 

 curl "localhost:9200/_cat/thread_pool?v&h=search.rejected" 
search.rejected 
            387 

curl "localhost:9200/_cat/thread_pool?v&h=index.rejected" 
index.rejected 
             0 
 - snapshot from elasticsearch.log 

[DEBUG][action.search.type       ] [Hulk 2099] [logstash-2015.03.14][4],
node[qxcAN3lURs65Lf1GMhB_qg], [P], s[STARTED]: Failed to execute
[org.elasticsearch.action.search.SearchRequest@7c71025f] lastShard [true] 
org.elasticsearch.common.util.concurrent.EsRejectedExecutionException:
rejected execution (queue capacity 1000) on
org.elasticsearch.search.action.SearchServiceTransportAction$23@1d7c9f0f 
        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:551)
 
        at
org.elasticsearch.search.action.SearchServiceTransportAction.sendExecuteQuery(SearchServiceTransportAction.java:228)
 
        at
org.elasticsearch.action.search.type.TransportSearchCountAction$AsyncAction.sendExecuteFirstPhase(TransportSearchCountAction.java:71)
 
        at
org.elasticsearch.action.search.type.TransportSearchTypeAction$BaseAsyncAction.performFirstPhase(TransportSearchTypeAction.java:171)
 

Now i read that i have to update the threadpool settings in ES and i have
now 
 curl -XGET localhost:9200/_cluster/settings?pretty 
{ 
  "persistent" : { }, 
  "transient" : { } 
} 

i'm trying to update the settings with the below commands 

curl -XPUT localhost:9200/_cluster/settings -d '{ 

"threadpool" : { 
  "index": { 
    "type": "fixed", 
    "size": 32, 
    "queue_size": 1000 
  }, 
  "bulk": { 
    "type": "fixed", 
    "size": 32, 
    "queue_size": 1000 
  }, 
  "search": { 
    "type": "fixed", 
    "size": 96, 
    "queue_size": 1000 
 } 
} 
}' 
  
but i keep getting {"error":"ActionRequestValidationException[Validation
Failed: 1: no settings to update;]","status":400} 


What's wrong with this command? is it the right solution for my issue ? 

Please advise 

Thanks. 

Ayman



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