# Strange issue - in flight request estimated size **URL:** \ **Category:** Elasticsearch\ **Created:** [December 7, 2018, 4:29pm UTC](https://discuss.elastic.co/t/strange-issue-in-flight-request-estimated-size/159964 "2018-12-07T16:29:21Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![ttdata](https://avatars.discourse-cdn.com/v4/letter/t/a183cd/32.png) [@ttdata](https://discuss.elastic.co/u/ttdata)\ **Post date:** [December 7, 2018, 4:29pm UTC](https://discuss.elastic.co/t/strange-issue-in-flight-request-estimated-size/159964/1 "2018-12-07T16:29:21Z")
Hey guys, My setup : - ES 6.5.1 - JDK 1.8 - Centos 7 I have had strange issue yesterday with two nodes of my ES cluster when only two nodes get write\_queue full and increase until i restart my node(because node was crashed) i saw on my graph that the metrics "in flight requests size estimated" increase much (picture attached) ![55](https://us1.discourse-cdn.com/elastic/original/3X/e/c/ecc224fdf741fc9f7d4f2428aac6a7b4a0c29087.png) Someone knows what it could be related to ? Regards, ---
**Author:** ![ttdata](https://avatars.discourse-cdn.com/v4/letter/t/a183cd/32.png) [@ttdata](https://discuss.elastic.co/u/ttdata)\ **Post date:** [December 7, 2018, 4:30pm UTC](https://discuss.elastic.co/t/strange-issue-in-flight-request-estimated-size/159964/2 "2018-12-07T16:30:28Z")
i would like to add that today on normal activity and without any issue, this metric looks like the picture below ![08](https://us1.discourse-cdn.com/elastic/original/3X/0/5/05c5c408f6c6a0e955d05e704f6008e92f2bc74d.png) ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [January 4, 2019, 4:30pm UTC](https://discuss.elastic.co/t/strange-issue-in-flight-request-estimated-size/159964/3 "2019-01-04T16:30:29Z")
Closed on January 4, 2019, 4:30pm UTC This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.