# Bulk inserts more documents than given
**URL:** https://discuss.elastic.co/t/bulk-inserts-more-documents-than-given/342280
**Category:** Elasticsearch
**Created:** [September 4, 2023, 4:24pm UTC](https://discuss.elastic.co/t/bulk-inserts-more-documents-than-given/342280 "2023-09-04T16:24:36Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@Kostyantyn\_Dobriohlo](https://discuss.elastic.co/u/Kostyantyn_Dobriohlo)
#### Post date: [September 4, 2023, 4:24pm UTC](https://discuss.elastic.co/t/bulk-inserts-more-documents-than-given/342280/1 "2023-09-04T16:24:36Z")
Elasticsearched configured in single-node mode, I have ~1 million elements, but after bulk insert operation I see 10 million elements. I use this python code:
```auto
def generate_docs(data):
for item in data:
doc = {
'_index': 'my_index',
'_source': item
}
bulk(client, generate_docs)
```
What a reason of this duplication and is it a real problem?
---
### Author:  [@dadoonet](https://discuss.elastic.co/u/dadoonet)
#### Post date: [September 4, 2023, 7:10pm UTC](https://discuss.elastic.co/t/bulk-inserts-more-documents-than-given/342280/2 "2023-09-04T19:10:58Z")
Where do you see 10m?
Are you using nested field type in your mapping?
---
### Author:  [@Kostyantyn\_Dobriohlo](https://discuss.elastic.co/u/Kostyantyn_Dobriohlo)
#### Post date: [September 5, 2023, 6:06am UTC](https://discuss.elastic.co/t/bulk-inserts-more-documents-than-given/342280/3 "2023-09-05T06:06:10Z")
I see it when call \_cat/indices. And yes, I use nested field type
---
### Author:  [@dadoonet](https://discuss.elastic.co/u/dadoonet)
#### Post date: [September 5, 2023, 6:30am UTC](https://discuss.elastic.co/t/bulk-inserts-more-documents-than-given/342280/4 "2023-09-05T06:30:29Z")
So that's expected.
A nested document is a Lucene document. Which you see in the cat API.
If you run a search, you should get the right number.
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [October 3, 2023, 6:31am UTC](https://discuss.elastic.co/t/bulk-inserts-more-documents-than-given/342280/5 "2023-10-03T06:31:18Z")
This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.