# Failed to process cluster event (put-mapping) within 30s

**URL:** <https://discuss.elastic.co/t/failed-to-process-cluster-event-put-mapping-within-30s/153898>\
**Category:** Elasticsearch\
**Created:** [October 25, 2018, 3:33am UTC](https://discuss.elastic.co/t/failed-to-process-cluster-event-put-mapping-within-30s/153898 "2018-10-25T03:33:03Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![shjdwxy](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/shjdwxy/32/43102_2.png) [@shjdwxy](https://discuss.elastic.co/u/shjdwxy)\
**Post date:** [October 25, 2018, 3:33am UTC](https://discuss.elastic.co/t/failed-to-process-cluster-event-put-mapping-within-30s/153898/1 "2018-10-25T03:33:03Z")

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hi, guys  
`failed to process cluster event (put-mapping) within 30s` problem often happened in my cluster.  
My es cluster was used for log management, lots of index created everyday and I use dynamic mapping adjust to doc indexed.  
My cluster config is:

```auto
  es version ： 5.4.3.  
  master node num：3
  datenode num: 50
   index num: 8000
  shard num: 20000

```

When mapping update timeout, the index speed decreases a lot.  
So How to solve or debug this problem? Any suggestions?

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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:** [November 22, 2018, 3:33am UTC](https://discuss.elastic.co/t/failed-to-process-cluster-event-put-mapping-within-30s/153898/2 "2018-11-22T03:33:04Z")

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