# How to find the thread pool size of an ElasticSearch cluster? **URL:** \ **Category:** Elasticsearch\ **Created:** [October 20, 2014, 10:09am UTC](https://discuss.elastic.co/t/how-to-find-the-thread-pool-size-of-an-elasticsearch-cluster/20336 "2014-10-20T10:09:54Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![truong\_ha](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/truong_ha/32/1175_2.png) [@truong\_ha](https://discuss.elastic.co/u/truong_ha)\ **Post date:** [October 20, 2014, 10:09am UTC](https://discuss.elastic.co/t/how-to-find-the-thread-pool-size-of-an-elasticsearch-cluster/20336/1 "2014-10-20T10:09:54Z")
I'm writing the concurrent code to send bulk index to ElasticSearch, and sending this query to get the thread pool size: GET /\_cat/thread\_pool?v&h=host,bulk.active,bulk.queueSize The response is host bulk.active bulk.queueSize 1D4HPY1 0 50 1D4HPY2 0 50 1D4HPY3 0 50 1D4HPY4 0 50 So how can I calculate the actual pool size of that cluster? Is it the sum of all hosts which means 200? -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/e6e48fe3-6269-493c-9258-fdc97baeb27e%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/e6e48fe3-6269-493c-9258-fdc97baeb27e%40googlegroups.com). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**Author:** ![jprante](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/jprante/32/44941_2.png) [@jprante](https://discuss.elastic.co/u/jprante)\ **Post date:** [October 20, 2014, 11:09am UTC](https://discuss.elastic.co/t/how-to-find-the-thread-pool-size-of-an-elasticsearch-cluster/20336/2 "2014-10-20T11:09:19Z")
bulk.queueSize is the maximum size before requests are rejected. Jörg On Mon, Oct 20, 2014 at 12:09 PM, truong ha [truonghatsts@gmail.com](mailto:truonghatsts@gmail.com) wrote: > I'm writing the concurrent code to send bulk index to Elasticsearch, and > sending this query to get the thread pool size: > > GET /\_cat/thread\_pool?v&h=host,bulk.active,bulk.queueSize > > The response is > > host bulk.active bulk.queueSize > 1D4HPY1 0 50 > 1D4HPY2 0 50 > 1D4HPY3 0 50 > 1D4HPY4 0 50 > > So how can I calculate the actual pool size of that cluster? Is it the sum > of all hosts which means 200? > > -- > You received this message because you are subscribed to the Google Groups > "elasticsearch" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). > To view this discussion on the web visit > [https://groups.google.com/d/msgid/elasticsearch/e6e48fe3-6269-493c-9258-fdc97baeb27e%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/e6e48fe3-6269-493c-9258-fdc97baeb27e%40googlegroups.com) > [https://groups.google.com/d/msgid/elasticsearch/e6e48fe3-6269-493c-9258-fdc97baeb27e%40googlegroups.com?utm\_medium=email&utm\_source=footer](https://groups.google.com/d/msgid/elasticsearch/e6e48fe3-6269-493c-9258-fdc97baeb27e%40googlegroups.com?utm_medium=email&utm_source=footer) > . > For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/CAKdsXoHBLvxUvLweqDQUQOs2bP6OxJPs3TgJkFLKWk%2BZi6Bgkg%40mail.gmail.com](https://groups.google.com/d/msgid/elasticsearch/CAKdsXoHBLvxUvLweqDQUQOs2bP6OxJPs3TgJkFLKWk%2BZi6Bgkg%40mail.gmail.com). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**Author:** ![truong\_ha](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/truong_ha/32/1175_2.png) [@truong\_ha](https://discuss.elastic.co/u/truong_ha)\ **Post date:** [October 20, 2014, 1:57pm UTC](https://discuss.elastic.co/t/how-to-find-the-thread-pool-size-of-an-elasticsearch-cluster/20336/3 "2014-10-20T13:57:40Z")
So in my case, which is the maximum requests I can send: _200 or 50_? On Monday, 20 October 2014 18:09:28 UTC+7, Jörg Prante wrote: > bulk.queueSize is the maximum size before requests are rejected. > > Jörg > > On Mon, Oct 20, 2014 at 12:09 PM, truong ha \<[truong...@gmail.com](mailto:truong...@gmail.com) > \\> wrote: > > > I'm writing the concurrent code to send bulk index to Elasticsearch, and > > sending this query to get the thread pool size: > > > > GET /\_cat/thread\_pool?v&h=host,bulk.active,bulk.queueSize > > > > The response is > > > > host bulk.active bulk.queueSize > > 1D4HPY1 0 50 > > 1D4HPY2 0 50 > > 1D4HPY3 0 50 > > 1D4HPY4 0 50 > > > > So how can I calculate the actual pool size of that cluster? Is it the > > sum of all hosts which means 200? > > > > -- > > You received this message because you are subscribed to the Google Groups > > "elasticsearch" group. > > To unsubscribe from this group and stop receiving emails from it, send an > > email to [elasticsearc...@googlegroups.com](mailto:elasticsearc...@googlegroups.com) \. > > To view this discussion on the web visit > > [https://groups.google.com/d/msgid/elasticsearch/e6e48fe3-6269-493c-9258-fdc97baeb27e%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/e6e48fe3-6269-493c-9258-fdc97baeb27e%40googlegroups.com) > > [https://groups.google.com/d/msgid/elasticsearch/e6e48fe3-6269-493c-9258-fdc97baeb27e%40googlegroups.com?utm\_medium=email&utm\_source=footer](https://groups.google.com/d/msgid/elasticsearch/e6e48fe3-6269-493c-9258-fdc97baeb27e%40googlegroups.com?utm_medium=email&utm_source=footer) > > . > > For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/29373a56-dbe7-4afb-9733-78f3fbbf5c2d%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/29373a56-dbe7-4afb-9733-78f3fbbf5c2d%40googlegroups.com). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**Author:** ![jprante](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/jprante/32/44941_2.png) [@jprante](https://discuss.elastic.co/u/jprante)\ **Post date:** [October 20, 2014, 3:25pm UTC](https://discuss.elastic.co/t/how-to-find-the-thread-pool-size-of-an-elasticsearch-cluster/20336/4 "2014-10-20T15:25:30Z")
This is not the maximum number of requests you can send. It means "when bulk indexing on a node gets too busy and must be queued, the maximum number of actions that are allowed to queue up before a client is notified of rejections is 50". Jörg On Mon, Oct 20, 2014 at 3:57 PM, truong ha [truonghatsts@gmail.com](mailto:truonghatsts@gmail.com) wrote: > So in my case, which is the maximum requests I can send: _200 or 50_? > > On Monday, 20 October 2014 18:09:28 UTC+7, Jörg Prante wrote: > > > bulk.queueSize is the maximum size before requests are rejected. > > > > Jörg > > > > On Mon, Oct 20, 2014 at 12:09 PM, truong ha [truong...@gmail.com](mailto:truong...@gmail.com) wrote: > > > > > I'm writing the concurrent code to send bulk index to Elasticsearch, and > > > sending this query to get the thread pool size: > > > > > > GET /\_cat/thread\_pool?v&h=host,bulk.active,bulk.queueSize > > > > > > The response is > > > > > > host bulk.active bulk.queueSize > > > 1D4HPY1 0 50 > > > 1D4HPY2 0 50 > > > 1D4HPY3 0 50 > > > 1D4HPY4 0 50 > > > > > > So how can I calculate the actual pool size of that cluster? Is it the > > > sum of all hosts which means 200? > > > > > > -- > > > You received this message because you are subscribed to the Google > > > Groups "elasticsearch" group. > > > To unsubscribe from this group and stop receiving emails from it, send > > > an email to [elasticsearc...@googlegroups.com](mailto:elasticsearc...@googlegroups.com). > > > To view this discussion on the web visit [https://groups.google.com/d/](https://groups.google.com/d/) > > > msgid/elasticsearch/e6e48fe3-6269-493c-9258-fdc97baeb27e% > > > [40googlegroups.com](http://40googlegroups.com) > > > [https://groups.google.com/d/msgid/elasticsearch/e6e48fe3-6269-493c-9258-fdc97baeb27e%40googlegroups.com?utm\_medium=email&utm\_source=footer](https://groups.google.com/d/msgid/elasticsearch/e6e48fe3-6269-493c-9258-fdc97baeb27e%40googlegroups.com?utm_medium=email&utm_source=footer) > > > . > > > For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). > > > > -- > > You received this message because you are subscribed to the Google Groups > > "elasticsearch" group. > > To unsubscribe from this group and stop receiving emails from it, send an > > email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). > > To view this discussion on the web visit > > [https://groups.google.com/d/msgid/elasticsearch/29373a56-dbe7-4afb-9733-78f3fbbf5c2d%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/29373a56-dbe7-4afb-9733-78f3fbbf5c2d%40googlegroups.com) > > [https://groups.google.com/d/msgid/elasticsearch/29373a56-dbe7-4afb-9733-78f3fbbf5c2d%40googlegroups.com?utm\_medium=email&utm\_source=footer](https://groups.google.com/d/msgid/elasticsearch/29373a56-dbe7-4afb-9733-78f3fbbf5c2d%40googlegroups.com?utm_medium=email&utm_source=footer) > > . > > For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/CAKdsXoF%3D0RY90k%2BS7-Y-RNhcjshdSptWZUoPQx7GC5r0AMXJkg%40mail.gmail.com](https://groups.google.com/d/msgid/elasticsearch/CAKdsXoF%3D0RY90k%2BS7-Y-RNhcjshdSptWZUoPQx7GC5r0AMXJkg%40mail.gmail.com). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**Author:** ![truong\_ha](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/truong_ha/32/1175_2.png) [@truong\_ha](https://discuss.elastic.co/u/truong_ha)\ **Post date:** [October 21, 2014, 6:33am UTC](https://discuss.elastic.co/t/how-to-find-the-thread-pool-size-of-an-elasticsearch-cluster/20336/5 "2014-10-21T06:33:36Z")
50 is the maximum for one node, so 200 is the maximum for the entire cluster right? It means to avoid being rejected, I should gently send requests to the cluster, not to overwhelm the queue? On Monday, 20 October 2014 22:27:26 UTC+7, Jörg Prante wrote: > This is not the maximum number of requests you can send. It means "when > bulk indexing on a node gets too busy and must be queued, the maximum > number of actions that are allowed to queue up before a client is notified > of rejections is 50". > > Jörg > > On Mon, Oct 20, 2014 at 3:57 PM, truong ha \<[truong...@gmail.com](mailto:truong...@gmail.com) > \\> wrote: > > > So in my case, which is the maximum requests I can send: _200 or 50_? > > > > On Monday, 20 October 2014 18:09:28 UTC+7, Jörg Prante wrote: > > > > > bulk.queueSize is the maximum size before requests are rejected. > > > > > > Jörg > > > > > > On Mon, Oct 20, 2014 at 12:09 PM, truong ha [truong...@gmail.com](mailto:truong...@gmail.com) wrote: > > > > > > > I'm writing the concurrent code to send bulk index to Elasticsearch, > > > > and sending this query to get the thread pool size: > > > > > > > > GET /\_cat/thread\_pool?v&h=host,bulk.active,bulk.queueSize > > > > > > > > The response is > > > > > > > > host bulk.active bulk.queueSize > > > > 1D4HPY1 0 50 > > > > 1D4HPY2 0 50 > > > > 1D4HPY3 0 50 > > > > 1D4HPY4 0 50 > > > > > > > > So how can I calculate the actual pool size of that cluster? Is it the > > > > sum of all hosts which means 200? > > > > > > > > -- > > > > You received this message because you are subscribed to the Google > > > > Groups "elasticsearch" group. > > > > To unsubscribe from this group and stop receiving emails from it, send > > > > an email to [elasticsearc...@googlegroups.com](mailto:elasticsearc...@googlegroups.com). > > > > To view this discussion on the web visit [https://groups.google.com/d/](https://groups.google.com/d/) > > > > msgid/elasticsearch/e6e48fe3-6269-493c-9258-fdc97baeb27e% > > > > [40googlegroups.com](http://40googlegroups.com) > > > > [https://groups.google.com/d/msgid/elasticsearch/e6e48fe3-6269-493c-9258-fdc97baeb27e%40googlegroups.com?utm\_medium=email&utm\_source=footer](https://groups.google.com/d/msgid/elasticsearch/e6e48fe3-6269-493c-9258-fdc97baeb27e%40googlegroups.com?utm_medium=email&utm_source=footer) > > > > . > > > > For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). > > > > > > -- > > > You received this message because you are subscribed to the Google Groups > > > "elasticsearch" group. > > > To unsubscribe from this group and stop receiving emails from it, send an > > > email to [elasticsearc...@googlegroups.com](mailto:elasticsearc...@googlegroups.com) \. > > > To view this discussion on the web visit > > > [https://groups.google.com/d/msgid/elasticsearch/29373a56-dbe7-4afb-9733-78f3fbbf5c2d%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/29373a56-dbe7-4afb-9733-78f3fbbf5c2d%40googlegroups.com) > > > [https://groups.google.com/d/msgid/elasticsearch/29373a56-dbe7-4afb-9733-78f3fbbf5c2d%40googlegroups.com?utm\_medium=email&utm\_source=footer](https://groups.google.com/d/msgid/elasticsearch/29373a56-dbe7-4afb-9733-78f3fbbf5c2d%40googlegroups.com?utm_medium=email&utm_source=footer) > > > . > > > > For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/66161b58-eeca-4277-9e81-12f323a8181a%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/66161b58-eeca-4277-9e81-12f323a8181a%40googlegroups.com). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**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, 12:54am UTC](https://discuss.elastic.co/t/how-to-find-the-thread-pool-size-of-an-elasticsearch-cluster/20336/6 "2017-07-06T00:54:49Z")