We are on elasticsearch 6, we are using parent/child joins and it is currently based on ids which are (like '7C9F1FBF-0ACF-473D-A8CE-343968E981F6'), wondering if the length of these id or changing them to number (like '1','2981') would have any impact on performance? Thank you
The join is not performed on values themselves but on their ordinal, so the length of the join key shouldn't have a significant impact.
Thanks for the answer Adrien. Though it is interesting to see the amount of space it consumes is reduced by 3 times if I change the key from guid like string to integer! Which made me think is this if impact speed.
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