# Max\_concurrent\_shard\_requests over cross cluster search 7.5 to 6.5

**URL:** <https://discuss.elastic.co/t/max-concurrent-shard-requests-over-cross-cluster-search-7-5-to-6-5/245353>\
**Category:** Elasticsearch\
**Tags:** ccs-cross-cluster-search\
**Created:** [August 18, 2020, 6:34am UTC](https://discuss.elastic.co/t/max-concurrent-shard-requests-over-cross-cluster-search-7-5-to-6-5/245353 "2020-08-18T06:34:36Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![hamid\_bayat](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/hamid_bayat/32/74056_2.png) [@hamid\_bayat](https://discuss.elastic.co/u/hamid_bayat)\
**Post date:** [August 18, 2020, 6:34am UTC](https://discuss.elastic.co/t/max-concurrent-shard-requests-over-cross-cluster-search-7-5-to-6-5/245353/1 "2020-08-18T06:34:37Z")

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Hi.  
As you know In elasticsearch 7.x `the max_concurrent_shard_requests` concept change from over cluster (default 256) to per node (default 5). we want to use cross cluster search from 7.5 cluster to 6.5 cluster with `max_concurrent_shard_requests=1` and we concern about this limit apply as **cluster** `max_concurrent_shard_requests` **limit** in 6.5 cluster.  
can anyone from elasticsearch team member clarify about this config?

thanks.

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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:** [September 15, 2020, 6:34am UTC](https://discuss.elastic.co/t/max-concurrent-shard-requests-over-cross-cluster-search-7-5-to-6-5/245353/2 "2020-09-15T06:34:45Z")

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