# Corrupt Index Exception
**URL:** https://discuss.elastic.co/t/corrupt-index-exception/5302
**Category:** Elasticsearch
**Created:** [September 2, 2011, 2:44pm UTC](https://discuss.elastic.co/t/corrupt-index-exception/5302 "2011-09-02T14:44:31Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@James\_Cook](https://discuss.elastic.co/u/James_Cook)
#### Post date: [September 2, 2011, 2:44pm UTC](https://discuss.elastic.co/t/corrupt-index-exception/5302/1 "2011-09-02T14:44:31Z")
I shut down my cluster and restarted recently. While doing so, I noticed the
following MergeException:
>
However, I don't know what this means to the stability or data integrity of
my restarted cluster. Should I be concerned?
-- jim
---
### Author:  [@kimchy](https://discuss.elastic.co/u/kimchy)
#### Post date: [September 5, 2011, 9:03am UTC](https://discuss.elastic.co/t/corrupt-index-exception/5302/2 "2011-09-05T09:03:53Z")
It means that the ppkc index (first shard) is somehow corrupted. You are
using the s3 gateway, right? Can you try and delete the data location for
ppkc first shard and have it recover?
On Fri, Sep 2, 2011 at 5:44 PM, James Cook [jcook@tracermedia.com](mailto:jcook@tracermedia.com) wrote:
> I shut down my cluster and restarted recently. While doing so, I noticed
> the following MergeException:
> [gist:1188762 · GitHub](https://gist.github.com/1188762)
>
> However, I don't know what this means to the stability or data integrity of
> my restarted cluster. Should I be concerned?
>
> -- jim
---
### Author:  [@kimchy](https://discuss.elastic.co/u/kimchy)
#### Post date: [September 5, 2011, 9:04am UTC](https://discuss.elastic.co/t/corrupt-index-exception/5302/3 "2011-09-05T09:04:22Z")
I mean, you will need to shutdown, delete from shard locally, and then start
back up.
On Mon, Sep 5, 2011 at 12:03 PM, Shay Banon [kimchy@gmail.com](mailto:kimchy@gmail.com) wrote:
> It means that the ppkc index (first shard) is somehow corrupted. You are
> using the s3 gateway, right? Can you try and delete the data location for
> ppkc first shard and have it recover?
>
> On Fri, Sep 2, 2011 at 5:44 PM, James Cook [jcook@tracermedia.com](mailto:jcook@tracermedia.com) wrote:
>
> > I shut down my cluster and restarted recently. While doing so, I noticed
> > the following MergeException:
> > [gist:1188762 · GitHub](https://gist.github.com/1188762)
> >
> > However, I don't know what this means to the stability or data integrity
> > of my restarted cluster. Should I be concerned?
> >
> > -- jim
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 6, 2017, 3:55am UTC](https://discuss.elastic.co/t/corrupt-index-exception/5302/4 "2017-07-06T03:55:13Z")