# Delete\_by\_query and index concurrency

**URL:** <https://discuss.elastic.co/t/delete-by-query-and-index-concurrency/4651>\
**Category:** Elasticsearch\
**Created:** [June 18, 2011, 4:03am UTC](https://discuss.elastic.co/t/delete-by-query-and-index-concurrency/4651 "2011-06-18T04:03:44Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Grant\_Rodgers](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/grant_rodgers/32/3204_2.png) [@Grant\_Rodgers](https://discuss.elastic.co/u/Grant_Rodgers)\
**Post date:** [June 18, 2011, 4:03am UTC](https://discuss.elastic.co/t/delete-by-query-and-index-concurrency/4651/1 "2011-06-18T04:03:44Z")

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If I do a delete\_by\_query request and wait for it to return, then  
index some documents that would match the delete query, is it possible  
that delete\_by\_query would delete the new documents as well?

example:  
posts/tag delete\_by\_query "post\_id:1"

posts/tag index { "post\_id":1, "tag": "awesome" }

posts/tag search "post\_id:1"

Is the new document guaranteed to still exist?

Thanks,  
Grant

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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:** [July 6, 2017, 4:03am UTC](https://discuss.elastic.co/t/delete-by-query-and-index-concurrency/4651/2 "2017-07-06T04:03:13Z")

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