Setting re-index batch size in curator tool

When using _reindex api in Elasticsearch, we can set scroll batch size as below

From - By default _reindex uses scroll batches of 1000. You can change the batch size with the size field in the source element:

POST _reindex
  "source": {
    "index": "source",
    "size": 100
  "dest": {
    "index": "dest"

I was wondering if the option to change batch size is available when one makes use of reindex action in curator tool. From the documentation at, I don't see any batch size parameter.

Will appreciate some inputs here.

@Christian_Dahlqvist - any thoughts on this?

I have no idea.

Thanks Christian.

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