# I want to know what the flush\_size and idle\_flush\_time has been changed to

**URL:** <https://discuss.elastic.co/t/i-want-to-know-what-the-flush-size-and-idle-flush-time-has-been-changed-to/127478>\
**Category:** Logstash\
**Created:** [April 10, 2018, 12:16pm UTC](https://discuss.elastic.co/t/i-want-to-know-what-the-flush-size-and-idle-flush-time-has-been-changed-to/127478 "2018-04-10T12:16:21Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![chenzilong444](https://avatars.discourse-cdn.com/v4/letter/c/bbe5ce/32.png) [@chenzilong444](https://discuss.elastic.co/u/chenzilong444)\
**Post date:** [April 10, 2018, 12:16pm UTC](https://discuss.elastic.co/t/i-want-to-know-what-the-flush-size-and-idle-flush-time-has-been-changed-to/127478/1 "2018-04-10T12:16:21Z")

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```
	elasticsearch { 
					hosts => localhost	  	
					index => "logstash(%{+YYYY.MM.dd})"  
					document_type =>"logstash"
                    flush_size=>1000 
                    idle_flush_time=>15
					}  

```

it didn‘t work  
i use logstash-6.1.3

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<div class="post-metadata">

**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\
**Post date:** [April 10, 2018, 3:54pm UTC](https://discuss.elastic.co/t/i-want-to-know-what-the-flush-size-and-idle-flush-time-has-been-changed-to/127478/2 "2018-04-10T15:54:00Z")

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Those parameters have been deprecated as output plugins are handled differently now by Logstash. Processing is now done in batches, and output is handled per batch. An output plugin is therefore no longer allowed to accumulate events across multiple batches, which is what I believe these parameters used to control.

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<div class="post-metadata">

**Author:** ![chenzilong444](https://avatars.discourse-cdn.com/v4/letter/c/bbe5ce/32.png) [@chenzilong444](https://discuss.elastic.co/u/chenzilong444)\
**Post date:** [April 11, 2018, 6:53am UTC](https://discuss.elastic.co/t/i-want-to-know-what-the-flush-size-and-idle-flush-time-has-been-changed-to/127478/3 "2018-04-11T06:53:11Z")

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how can i know how many events in a batch ，how does logstash output work ,i don't want logstash report errors because i upload many log the same time

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<div class="post-metadata">

**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\
**Post date:** [April 11, 2018, 7:20am UTC](https://discuss.elastic.co/t/i-want-to-know-what-the-flush-size-and-idle-flush-time-has-been-changed-to/127478/4 "2018-04-11T07:20:25Z")

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The size of internal batches are governed by the `pipeline.batch.size` configuration parameter. How to tune this is covered in [the documentation](https://www.elastic.co/guide/en/logstash/6.2/tuning-logstash.html). Unless you create additional events within a batch, e.g. through the `clone` filter, this is the maximum bulk size sent to Elasticsearch, as each batch is processed separately.

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<div class="post-metadata">

**Author:** ![chenzilong444](https://avatars.discourse-cdn.com/v4/letter/c/bbe5ce/32.png) [@chenzilong444](https://discuss.elastic.co/u/chenzilong444)\
**Post date:** [April 11, 2018, 7:37am UTC](https://discuss.elastic.co/t/i-want-to-know-what-the-flush-size-and-idle-flush-time-has-been-changed-to/127478/5 "2018-04-11T07:37:35Z")

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thank you~

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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:** [May 9, 2018, 7:37am UTC](https://discuss.elastic.co/t/i-want-to-know-what-the-flush-size-and-idle-flush-time-has-been-changed-to/127478/6 "2018-05-09T07:37:55Z")

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