just a short question regarding copying a very large index.
The index has ca. 400,000,000 to 500,000,000 documents.
I tried it via _reindex but here it took 30 minutes for 4,000,000 documents.
Are there any methods to speed things up?
I am running on a elasticsearch version 5.2.2.
Are you looking to create a copy in the same cluster?
I have done this in the past by creating a snapshot and then renaming the index as I restore it back. That will copy full segment files and should be faster than reindexing.
ah okay, nice idea
Do you have kind of a tutorial of how to do this?
It is all covered in the documentation. The second example under the restore section shows how you can rename the index you are restoring.
Thank you very much! I will test this one
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