# When replication occurs?

**URL:** <https://discuss.elastic.co/t/when-replication-occurs/75234>\
**Category:** Elasticsearch\
**Created:** [February 15, 2017, 5:39pm UTC](https://discuss.elastic.co/t/when-replication-occurs/75234 "2017-02-15T17:39:22Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![John16](https://avatars.discourse-cdn.com/v4/letter/j/ea666f/32.png) [@John16](https://discuss.elastic.co/u/John16)\
**Post date:** [February 15, 2017, 5:39pm UTC](https://discuss.elastic.co/t/when-replication-occurs/75234/1 "2017-02-15T17:39:22Z")

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Hello,

I have several indexes with replication=1.

`yellow open test-2017-02-15 rrmzk-O7QdSB2Ac83-Nf9g 7 1 832869232 0 363.9gb 363.9gb green open test-2017-02-14 LV5lotK3SQS_SSp1nqSeAg 7 1 91469260 0 144gb 72gb`

As you see, yesterday's index is in `green` state and `store.size=2*pri.store.size` (as expected).

But today's index is in `yellow` state and `store.size==pri.store.size`, so it looks like replications did not occur (yet?).

How this can be explained? Why replication of current index was delayed?

Thanks.

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**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\
**Post date:** [February 15, 2017, 9:12pm UTC](https://discuss.elastic.co/t/when-replication-occurs/75234/2 "2017-02-15T21:12:56Z")

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That depends.  
What version are you on?

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<div class="post-metadata">

**Author:** ![John16](https://avatars.discourse-cdn.com/v4/letter/j/ea666f/32.png) [@John16](https://discuss.elastic.co/u/John16)\
**Post date:** [February 16, 2017, 5:37am UTC](https://discuss.elastic.co/t/when-replication-occurs/75234/3 "2017-02-16T05:37:39Z")

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> [@warkolm](#):
>
> What version are you on?

5.2.0

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**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\
**Post date:** [February 16, 2017, 5:47am UTC](https://discuss.elastic.co/t/when-replication-occurs/75234/4 "2017-02-16T05:47:21Z")

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You can run a [https://www.elastic.co/guide/en/elasticsearch/reference/5.2/cluster-allocation-explain.html](https://www.elastic.co/guide/en/elasticsearch/reference/5.2/cluster-allocation-explain.html) and see why it's not allocating.

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<div class="post-metadata">

**Author:** ![John16](https://avatars.discourse-cdn.com/v4/letter/j/ea666f/32.png) [@John16](https://discuss.elastic.co/u/John16)\
**Post date:** [February 17, 2017, 9:33am UTC](https://discuss.elastic.co/t/when-replication-occurs/75234/5 "2017-02-17T09:33:28Z")

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okay, thanks!

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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:** [March 17, 2017, 9:33am UTC](https://discuss.elastic.co/t/when-replication-occurs/75234/6 "2017-03-17T09:33:46Z")

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