# Elaticsearch log "submitting async flush request" very frequency

**URL:** <https://discuss.elastic.co/t/elaticsearch-log-submitting-async-flush-request-very-frequency/165044>\
**Category:** Elasticsearch\
**Created:** [January 21, 2019, 12:10pm UTC](https://discuss.elastic.co/t/elaticsearch-log-submitting-async-flush-request-very-frequency/165044 "2019-01-21T12:10:06Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![chenchuangc](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/chenchuangc/32/40017_2.png) [@chenchuangc](https://discuss.elastic.co/u/chenchuangc)\
**Post date:** [January 21, 2019, 12:10pm UTC](https://discuss.elastic.co/t/elaticsearch-log-submitting-async-flush-request-very-frequency/165044/1 "2019-01-21T12:10:06Z")

</div>

**Elasticsearch version** (`bin/elasticsearch --version`):  
6.0.0

**Plugins installed** :

**JVM version** (`java -version`):  
java version "1.8.0\_91"  
Java(TM) SE Runtime Environment (build 1.8.0\_91-b14)  
Java HotSpot(TM) 64-Bit Server VM (build 25.91-b14, mixed mode)

**OS version** (`uname -a` if on a Unix-like system):  
Linux b-kk-search-06 2.6.32-431.11.32.el6.ucloud.x86\_64 SMP Sun Jun 18 20:58:44 EDT 2017 x86\_64 x86\_64 x86\_64 GNU/Linux

**Description of the problem including expected versus actual behavior** :

  my index (name is material\_two ) is very slow for bulk api , and i find a node`s latency is high  
then i get to the node`s elasticsearch server`s log ,  
it is just behind ,you see, just the index i siad that is slow with bulk api ,material\_two.

the index has been work well for more than one week ,just today it become this  
the log is very frequency

tail -f search\_prod.log

```auto
[2019-01-21T18:22:15,854][DEBUG][o.e.i.s.IndexShard] [ES06] [material_two][4] submitting async flush request
[2019-01-21T18:22:15,860][DEBUG][o.e.i.s.IndexShard] [ES06] [material_two][0] submitting async flush request
[2019-01-21T18:22:15,880][DEBUG][o.e.i.s.IndexShard] [ES06] [material_two][0] submitting async flush request
[2019-01-21T18:22:15,882][DEBUG][o.e.i.s.IndexShard] [ES06] [material_two][4] submitting async flush request
[2019-01-21T18:22:15,901][DEBUG][o.e.i.s.IndexShard] [ES06] [material_two][0] submitting async flush request
[2019-01-21T18:22:15,912][DEBUG][o.e.i.s.IndexShard] [ES06] [material_two][4] submitting async flush request
[2019-01-21T18:22:15,922][DEBUG][o.e.i.s.IndexShard] [ES06] [material_two][0] submitting async flush request
[2019-01-21T18:22:15,940][DEBUG][o.e.i.s.IndexShard] [ES06] [material_two][4] submitting async flush request
[2019-01-21T18:22:15,950][DEBUG][o.e.i.s.IndexShard] [ES06] [material_two][0] submitting async flush request
[2019-01-21T18:22:15,966][DEBUG][o.e.i.s.IndexShard] [ES06] [material_two][4] submitting async flush request
[2019-01-21T18:22:15,969][DEBUG][o.e.i.s.IndexShard] [ES06] [material_two][0] submitting async flush request
[2019-01-21T18:22:15,992][DEBUG][o.e.i.s.IndexShard] [ES06] [material_two][0] submitting async flush request
[2019-01-21T18:22:15,994][DEBUG][o.e.i.s.IndexShard] [ES06] [material_two][4] submitting async flush request
[2019-01-21T18:22:16,022][DEBUG][o.e.i.s.IndexShard] [ES06] [material_two][0] submitting async flush request
[2019-01-21T18:22:16,030][DEBUG][o.e.i.s.IndexShard] [ES06] [material_two][4] submitting async flush request
[2019-01-21T18:22:16,045][DEBUG][o.e.i.s.IndexShard] [ES06] [material_two][0] submitting async flush request
[2019-01-21T18:22:16,059][DEBUG][o.e.i.s.IndexShard] [ES06] [material_two][4] submitting async flush request
[2019-01-21T18:22:16,065][DEBUG][o.e.i.s.IndexShard] [ES06] [material_two][0] submitting async flush request
[2019-01-21T18:22:16,085][DEBUG][o.e.i.s.IndexShard] [ES06] [material_two][0] submitting async flush request
[2019-01-21T18:22:16,086][DEBUG][o.e.i.s.IndexShard] [ES06] [material_two][4] submitting async flush request
[2019-01-21T18:22:16,104][DEBUG][o.e.i.s.IndexShard] [ES06] [material_two][0] submitting async flush request
[2019-01-21T18:22:16,115][DEBUG][o.e.i.s.IndexShard] [ES06] [material_two][4] submitting async flush request
[2019-01-21T18:22:16,121][DEBUG][o.e.i.s.IndexShard] [ES06] [material_two][0] submitting async flush request

```

---

<div class="post-metadata">

**Author:** ![DavidTurner](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/davidturner/32/22453_2.png) [@DavidTurner](https://discuss.elastic.co/u/DavidTurner)\
**Post date:** [January 21, 2019, 4:15pm UTC](https://discuss.elastic.co/t/elaticsearch-log-submitting-async-flush-request-very-frequency/165044/2 "2019-01-21T16:15:59Z")

</div>

Possibly this is the bug that is fixed in [#28350](https://github.com/elastic/elasticsearch/pull/28350), see also [#29125](https://github.com/elastic/elasticsearch/pull/29125). I suggest you upgrade to a more recent version in which this issue is fixed.

---

<div class="post-metadata">

**Author:** ![chenchuangc](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/chenchuangc/32/40017_2.png) [@chenchuangc](https://discuss.elastic.co/u/chenchuangc)\
**Post date:** [January 22, 2019, 4:02am UTC](https://discuss.elastic.co/t/elaticsearch-log-submitting-async-flush-request-very-frequency/165044/3 "2019-01-22T04:02:36Z")

</div>

thank you so much!

---

<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:** [February 19, 2019, 4:02am UTC](https://discuss.elastic.co/t/elaticsearch-log-submitting-async-flush-request-very-frequency/165044/4 "2019-02-19T04:02:42Z")

</div>

Closed on February 19, 2019, 4:02am UTC

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