# Found "Unknown store type \[memory\]" with 2.0.0-beta

**URL:** https://discuss.elastic.co/t/found-unknown-store-type-memory-with-2-0-0-beta/31352
**Category:** Elasticsearch
**Created:** [September 29, 2015, 5:04pm UTC](https://discuss.elastic.co/t/found-unknown-store-type-memory-with-2-0-0-beta/31352 "2015-09-29T17:04:26Z")
**Posts on this page:** 5
**Page:** 1

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### Author: ![padang](https://avatars.discourse-cdn.com/v4/letter/p/65b543/32.png) [@padang](https://discuss.elastic.co/u/padang)
#### Post date: [September 29, 2015, 5:04pm UTC](https://discuss.elastic.co/t/found-unknown-store-type-memory-with-2-0-0-beta/31352/1 "2015-09-29T17:04:26Z")

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Hi,

This code works fine with 1.7.0 but not 2.0.0-beta. Is it expected ?

```
    builder.settings().put("index.store.type","memory");

```

Error is:

java.lang.IllegalArgumentException: Unknown store type [memory]  
at org.elasticsearch.index.store.IndexStoreModule.configure(IndexStoreMo  
dule.java:82)  
at org.elasticsearch.common.inject.AbstractModule.configure(AbstractModu  
le.java:61)  
at org.elasticsearch.common.inject.spi.Elements$RecordingBinder.install(

You can reproduce with [https://github.com/ltregan/esregression](https://github.com/ltregan/esregression) (uncomment the settings.put line).

Thanks for your help,

padang

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### Author: ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)
#### Post date: [September 29, 2015, 5:21pm UTC](https://discuss.elastic.co/t/found-unknown-store-type-memory-with-2-0-0-beta/31352/2 "2015-09-29T17:21:38Z")

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Yes. Expected. See [https://www.elastic.co/guide/en/elasticsearch/reference/2.0/\_setting\_changes.html#\_in\_memory\_indices](https://www.elastic.co/guide/en/elasticsearch/reference/2.0/_setting_changes.html#_in_memory_indices)

---

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### Author: ![davteje](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/davteje/32/25495_2.png) [@davteje](https://discuss.elastic.co/u/davteje)
#### Post date: [November 20, 2015, 10:40am UTC](https://discuss.elastic.co/t/found-unknown-store-type-memory-with-2-0-0-beta/31352/3 "2015-11-20T10:40:31Z")

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The provided link is not working any more. Is this information located in any other place?

I researched about this but I did not find anywhere an explanation why this storage type has been removed.

I would like to know if there is any option to have transient indeces, so the data is never persisted in the disk, as it was with "memory" type.

I tried with "mmapfs" but is does not seems to have exactly the same behaviour.

Thank you for your time.

David

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### Author: ![wilwade](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/wilwade/32/6865_2.png) [@wilwade](https://discuss.elastic.co/u/wilwade)
#### Post date: [December 28, 2015, 1:38pm UTC](https://discuss.elastic.co/t/found-unknown-store-type-memory-with-2-0-0-beta/31352/4 "2015-12-28T13:38:15Z")

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Here is the corrected link at least: [https://www.elastic.co/guide/en/elasticsearch/reference/current/breaking\_20\_setting\_changes.html#\_in\_memory\_indices](https://www.elastic.co/guide/en/elasticsearch/reference/current/breaking_20_setting_changes.html#_in_memory_indices)

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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: [July 5, 2017, 11:28pm UTC](https://discuss.elastic.co/t/found-unknown-store-type-memory-with-2-0-0-beta/31352/5 "2017-07-05T23:28:17Z")

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