# A problem with \_id in the mapping
**URL:** https://discuss.elastic.co/t/a-problem-with--id-in-the-mapping/12728
**Category:** Elasticsearch
**Created:** [July 9, 2013, 8:43pm UTC](https://discuss.elastic.co/t/a-problem-with--id-in-the-mapping/12728 "2013-07-09T20:43:21Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@Zhoutuo\_Yang](https://discuss.elastic.co/u/Zhoutuo_Yang)
#### Post date: [July 9, 2013, 8:43pm UTC](https://discuss.elastic.co/t/a-problem-with--id-in-the-mapping/12728/1 "2013-07-09T20:43:21Z")
Hi folks,
I'm having trouble with \_id field.
I use path to referring another field in the document for the id. Like
"\_id": {
"path": "myId"
}.
The problem is the elasticsearch seems to reject the document with the same
"myId" which will become the "\_id" after indexing.
Isn't the overwriting a more nature way instead of rejecting?
BTW, I'm feeding docs using logstash with elasticsearch\_http
Thank you.
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### Author:  [@radu\_gheorghe](https://discuss.elastic.co/u/radu_gheorghe)
#### Post date: [July 10, 2013, 8:16am UTC](https://discuss.elastic.co/t/a-problem-with--id-in-the-mapping/12728/2 "2013-07-10T08:16:22Z")
Hello,
I can't reproduce this issue, unless I specifically say to "create"
documents instead of "index". Here's a gist:
>
Can you provide a gist where the problem is recreated? Also, what versions
of ES and logstash are you using?
Best regards,
Radu
On Tue, Jul 9, 2013 at 11:43 PM, Zhoutuo Yang [zhoutuoy@gmail.com](mailto:zhoutuoy@gmail.com) wrote:
> Hi folks,
> I'm having trouble with \_id field.
> I use path to referring another field in the document for the id. Like
> "\_id": {
> "path": "myId"
> }.
> The problem is the elasticsearch seems to reject the document with the
> same "myId" which will become the "\_id" after indexing.
> Isn't the overwriting a more nature way instead of rejecting?
> BTW, I'm feeding docs using logstash with elasticsearch\_http
> Thank you.
>
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### Author:  [@Zhoutuo\_Yang](https://discuss.elastic.co/u/Zhoutuo_Yang)
#### Post date: [July 10, 2013, 5:16pm UTC](https://discuss.elastic.co/t/a-problem-with--id-in-the-mapping/12728/3 "2013-07-10T17:16:48Z")
Hi,
Thank you for replying, I found that it is a logstash issue. The plugin
elasticsearch\_http is unstable somehow.
I pulled it out, made it my own plugin with the same source code, it all
worked.
Version of logstash: 1.1.13, ES: 0.90.1
BTW, the exception was also thrown by logstash not ES
On Wed, Jul 10, 2013 at 1:16 AM, Radu Gheorghe
[radu.gheorghe@sematext.com](mailto:radu.gheorghe@sematext.com)wrote:
> Hello,
>
> I can't reproduce this issue, unless I specifically say to "create"
> documents instead of "index". Here's a gist:
> [Elasticsearch: If you create a mapping with the ID field pointing to a certain path, inserting two docs with the same ID should overwrite, instead of throwing an error. Unless you specify to "create" documents ยท GitHub](https://gist.github.com/radu-gheorghe/5964376)
>
> Can you provide a gist where the problem is recreated? Also, what versions
> of ES and logstash are you using?
>
> Best regards,
> Radu
>
> On Tue, Jul 9, 2013 at 11:43 PM, Zhoutuo Yang [zhoutuoy@gmail.com](mailto:zhoutuoy@gmail.com) wrote:
>
> > Hi folks,
> > I'm having trouble with \_id field.
> > I use path to referring another field in the document for the id. Like
> > "\_id": {
> > "path": "myId"
> > }.
> > The problem is the elasticsearch seems to reject the document with the
> > same "myId" which will become the "\_id" after indexing.
> > Isn't the overwriting a more nature way instead of rejecting?
> > BTW, I'm feeding docs using logstash with elasticsearch\_http
> > Thank you.
> >
> > --
> > You received this message because you are subscribed to the Google Groups
> > "elasticsearch" group.
> > To unsubscribe from this group and stop receiving emails from it, send an
> > email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com).
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> > For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out).
>
> --
> [http://sematext.com/](http://sematext.com/) -- Elasticsearch -- Solr -- Lucene
>
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 6, 2017, 2:27am UTC](https://discuss.elastic.co/t/a-problem-with--id-in-the-mapping/12728/4 "2017-07-06T02:27:06Z")