# Why is the MergePolicyConfig documentation missing?

**URL:** <https://discuss.elastic.co/t/why-is-the-mergepolicyconfig-documentation-missing/158628>\
**Category:** Elasticsearch\
**Created:** [November 28, 2018, 5:32pm UTC](https://discuss.elastic.co/t/why-is-the-mergepolicyconfig-documentation-missing/158628 "2018-11-28T17:32:08Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![trevan](https://avatars.discourse-cdn.com/v4/letter/t/7feea3/32.png) [@trevan](https://discuss.elastic.co/u/trevan)\
**Post date:** [November 28, 2018, 5:32pm UTC](https://discuss.elastic.co/t/why-is-the-mergepolicyconfig-documentation-missing/158628/1 "2018-11-28T17:32:08Z")

</div>

I noticed that the documentation for the MergePolicyConfig.java file ([https://github.com/elastic/elasticsearch/blob/master/server/src/main/java/org/elasticsearch/index/MergePolicyConfig.java](https://github.com/elastic/elasticsearch/blob/master/server/src/main/java/org/elasticsearch/index/MergePolicyConfig.java)) is not being shown on the documentation page at [https://www.elastic.co/guide/en/elasticsearch/reference/6.5/index-modules-merge.html](https://www.elastic.co/guide/en/elasticsearch/reference/6.5/index-modules-merge.html). I can't seem to find that documentation any where.

Should that documentation be available?

---

<div class="post-metadata">

**Author:** ![s1monw](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/s1monw/32/3637_2.png) [@s1monw](https://discuss.elastic.co/u/s1monw)\
**Post date:** [November 30, 2018, 10:41am UTC](https://discuss.elastic.co/t/why-is-the-mergepolicyconfig-documentation-missing/158628/2 "2018-11-30T10:41:37Z")

</div>

we removed this documentation on purpose since we consider changing the MP is a high profile expert task. If you are on the level of an expert that changes stuff there which is discouraged generally, (there are always exceptions) you should be able to find the docs in our source files which are accurate and up-to-date. Changing the merge policy is last resort usually hence we would like the average user to not even know about these settings.  
hope this makes sense.

---

<div class="post-metadata">

**Author:** ![trevan](https://avatars.discourse-cdn.com/v4/letter/t/7feea3/32.png) [@trevan](https://discuss.elastic.co/u/trevan)\
**Post date:** [November 30, 2018, 5:38pm UTC](https://discuss.elastic.co/t/why-is-the-mergepolicyconfig-documentation-missing/158628/3 "2018-11-30T17:38:08Z")

</div>

That makes sense.

---

<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:** [December 28, 2018, 5:38pm UTC](https://discuss.elastic.co/t/why-is-the-mergepolicyconfig-documentation-missing/158628/4 "2018-12-28T17:38:09Z")

</div>

Closed on December 28, 2018, 5:38pm UTC

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