# Pushing flush onto pipeline pipeline

**URL:** <https://discuss.elastic.co/t/pushing-flush-onto-pipeline-pipeline/68606>\
**Category:** Logstash\
**Created:** [December 9, 2016, 9:13pm UTC](https://discuss.elastic.co/t/pushing-flush-onto-pipeline-pipeline/68606 "2016-12-09T21:13:32Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![chromechris](https://avatars.discourse-cdn.com/v4/letter/c/e47c2d/32.png) [@chromechris](https://discuss.elastic.co/u/chromechris)\
**Post date:** [December 9, 2016, 9:13pm UTC](https://discuss.elastic.co/t/pushing-flush-onto-pipeline-pipeline/68606/1 "2016-12-09T21:13:32Z")

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Hello,

What does "pushing flush onto pipeline pipeline" mean in Logstash. I was running a Logstash instance in Debug Mode and saw that all my documents had been processed and shipped by Logstash, but kept getting the \<\<\<Pushing flush onto pipeline {:level=\>:debug, :file=\>"logstash/pipeline.rb", :line=\>"458", :method=\>"flush"}\>\>\> message. I am not understanding what "flush" it is pushing if Logstash was done processing all the files. Is it just an empty push since there were no more files to process?

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [January 6, 2017, 9:13pm UTC](https://discuss.elastic.co/t/pushing-flush-onto-pipeline-pipeline/68606/2 "2017-01-06T21:13:35Z")

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