# How to increase elasticsearch update and skip high load?

**URL:** <https://discuss.elastic.co/t/how-to-increase-elasticsearch-update-and-skip-high-load/313680>\
**Category:** Elasticsearch\
**Created:** [September 5, 2022, 12:11pm UTC](https://discuss.elastic.co/t/how-to-increase-elasticsearch-update-and-skip-high-load/313680 "2022-09-05T12:11:08Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![robocon20x](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/robocon20x/32/99145_2.png) [@robocon20x](https://discuss.elastic.co/u/robocon20x)\
**Post date:** [September 5, 2022, 12:11pm UTC](https://discuss.elastic.co/t/how-to-increase-elasticsearch-update-and-skip-high-load/313680/1 "2022-09-05T12:11:08Z")

</div>

i am using bulk to update 5m doc to an index. I think i could use update\_by\_query to speed up it. in my case: I have an array of id filed value ( it is unique), and I'm going to use bool query to find all document match and update their's field X by script.  
for example, I have bulk query like this.

```auto
{ "update" : { "_id" : "42348:1404408", "_index" : "v3_customers_42348", "retry_on_conflict" : 3} }
{ "script" : { "id": "cdp_upsert", "params" : {"data" : {"customer_id":"1404408"},"segment":{"include":["524837"]}}}}
{ "update" : { "_id" : "42348:1404413", "_index" : "v3_customers_42348", "retry_on_conflict" : 3} }
{ "script" : { "id": "cdp_upsert", "params" : {"data" : {"customer_id":"1404413"},"segment":{"include":["524837"]}}}}
{ "update" : { "_id" : "42348:1404414", "_index" : "v3_customers_42348", "retry_on_conflict" : 3} }
{ "script" : { "id": "cdp_upsert", "params" : {"data" : {"customer_id":"1404414"},"segment":{"include":["524837"]}}}}
{ "update" : { "_id" : "42348:1404415", "_index" : "v3_customers_42348", "retry_on_conflict" : 3} }
{ "script" : { "id": "cdp_upsert", "params" : {"data" : {"customer_id":"1404415"},"segment":{"include":["524837"]}}}}

```

what I am going to do is

```auto
POST v3_customers_33167/_update_by_query?refresh=true
{
  "query": {
    "bool": {
      "should": [
        {"match": {"customer_id":"558566653"}},
     // ..........................about 5k match.......................
        {"match": {"customer_id":"562488687"}}
        
      ]
    }
  },
"script":{
    "source":"ctx._source.segment_ids = ctx._source.segment_ids +'|'+params['segment_id'] ",
    "params":{
      "segment_id":"2233"
    }
  }
}

```

will this help ES not high load? cause if I use bulk, ES will respond slow and high load but bulk size about 5000. and is it possible to send an request have 5000 match in query ?

---

<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:** [October 3, 2022, 12:11pm UTC](https://discuss.elastic.co/t/how-to-increase-elasticsearch-update-and-skip-high-load/313680/2 "2022-10-03T12:11:46Z")

</div>

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