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Default max concurrent search req. numNodes * 5 #31171

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Merged
merged 4 commits into from
Jun 8, 2018
Merged

Default max concurrent search req. numNodes * 5 #31171

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1c47301
Default max concurrent search req. to the avg shards size per index
s1monw Jun 7, 2018
aafae7a
fix devision by zero
s1monw Jun 7, 2018
62ee2d1
move to a constant
s1monw Jun 7, 2018
d63d3c8
Merge branch 'master' into fix_max_con_search_request
s1monw Jun 7, 2018
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3 changes: 2 additions & 1 deletion server/src/main/java/org/elasticsearch/action/search/TransportSearchAction.java
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Original file line number Diff line number Diff line change
Expand Up @@ -346,7 +346,8 @@ private void executeSearch(SearchTask task, SearchTimeProvider timeProvider, Sea
* it sane. A single search request that fans out to lots of shards should not hit a cluster too hard while 256 is already a
* lot.
*/
searchRequest.setMaxConcurrentShardRequests(Math.min(256, nodeCount));
// we use nodeCount * 5 as we used to default this to the default number of shard which used to be 5.
searchRequest.setMaxConcurrentShardRequests(Math.min(256, nodeCount * 5));
}
boolean preFilterSearchShards = shouldPreFilterSearchShards(searchRequest, shardIterators);
searchAsyncAction(task, searchRequest, shardIterators, timeProvider, connectionLookup, clusterState.version(),
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