elasticsearch - Determining the number of Duplicates in Kibana -

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i trying total number of duplicates in "field1" in various documents in elk. read somewhere direct aggregation isn't possible in kibana , need use visualize tool so. , did that. using number of duplicates of each type. lets get count of 'a' 2, 'b' 1 , 'c' 2. rather looking there 2 duplicates (a , other being c).

how do it?


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