Can re-index be used to "copy" an index?

[hjiop_oop]

Hi,

Can I use re-index to clone one whole index A into index B?

Using elasticsearch python API.

Thanks,
hj

[elasticforme (Sachin)]

in plain word yes

[hjiop_oop]

Can you please give me some documentation or other resource to back this up?

[agx (David E)]

Assuming you've made no changes to your index templates, the basic reindex example on the Reindex API page would result in a copy of the existing index.

Just make sure your new index uses the same index template as the previous index.

https://www.elastic.co/guide/en/elasticsearch/reference/current/docs-reindex.html

So, if your index template matches on twitter_*

POST _reindex
{
"source": {
"index": "twitter_old"
},
"dest": {
"index": "twitter_new"
}
}

Should result in a copy of twitter_old in twitter_new.