# Update index with zero downtime

**URL:** <https://discuss.elastic.co/t/update-index-with-zero-downtime/71902>\
**Category:** Elasticsearch\
**Created:** [January 17, 2017, 7:56pm UTC](https://discuss.elastic.co/t/update-index-with-zero-downtime/71902 "2017-01-17T19:56:27Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![DBS](https://avatars.discourse-cdn.com/v4/letter/d/58f4c7/32.png) [@DBS](https://discuss.elastic.co/u/DBS)\
**Post date:** [January 17, 2017, 7:56pm UTC](https://discuss.elastic.co/t/update-index-with-zero-downtime/71902/1 "2017-01-17T19:56:27Z")

</div>

Hi,

How can I update index with zero downtime within the same cluster? Say I Just want to update a subset of docs and partial fields. What's the safest way and efficient way of doing this without interrupting the running application?

In addition, is there any limit of disk size for one cluster to index documents?

Thanks,

---

<div class="post-metadata">

**Author:** ![mainec](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/mainec/32/5557_2.png) [@mainec](https://discuss.elastic.co/u/mainec)\
**Post date:** [January 18, 2017, 11:43am UTC](https://discuss.elastic.co/t/update-index-with-zero-downtime/71902/2 "2017-01-18T11:43:42Z")

</div>

I don't quite get what you are asking. Indexing those documents with updated information shouldn't interrupt your ability to search. What kind of problem are you experiencing?

---

<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:** [February 15, 2017, 11:43am UTC](https://discuss.elastic.co/t/update-index-with-zero-downtime/71902/3 "2017-02-15T11:43:48Z")

</div>

This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.