# CorruptIndexException: checksum status indeterminate

**URL:** https://discuss.elastic.co/t/corruptindexexception-checksum-status-indeterminate/288827
**Category:** Elasticsearch
**Created:** [November 9, 2021, 9:49pm UTC](https://discuss.elastic.co/t/corruptindexexception-checksum-status-indeterminate/288827 "2021-11-09T21:49:48Z")
**Posts on this page:** 1
**Showing post:** 9

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### Author: ![DavidTurner](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/davidturner/32/22453_2.png) [@DavidTurner](https://discuss.elastic.co/u/DavidTurner)
#### Post date: [November 10, 2021, 7:18am UTC](https://discuss.elastic.co/t/corruptindexexception-checksum-status-indeterminate/288827/9 "2021-11-10T07:18:41Z")

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> [@tropically](#):
>
> How does Elasticsearch rebuild these replica's?

It copies the data from the primary.

> [@tropically](#):
>
> If I needed to fix this prior to Elasticsearch rebuilding, is that possible ?

No. Nothing but Elasticsearch may change Elasticsearch's data. Quoting the [same docs](https://www.elastic.co/guide/en/elasticsearch/reference/current/modules-node.html#data-path) as [last time](https://discuss.elastic.co/t/unexpected-file-read-error-while-reading-index/288795/2):

> **WARNING** : Don’t modify anything within the data directory or run processes that might interfere with its contents. If something other than Elasticsearch modifies the contents of the data directory, then Elasticsearch may fail, reporting corruption or other data inconsistencies, or may appear to work correctly having silently lost some of your data.

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_[View the full topic](https://discuss.elastic.co/t/corruptindexexception-checksum-status-indeterminate/288827)._