It's super unclear...
How this query is related to the reindex operation?
How is it related to an ingest plugin? Which one?
Then I'm not sure I'm understanding this part:
but the problem that ES increase the number of documents in the new index continuously but in reality, I have to found the same number of documents of the original index.
And finally, please format your code using </> icon as explained in this guide and not the citation button. It will make your post more readable.
Or use markdown style like:
```
CODE
```