Why the unique count of some item is larger than count in table chart of kibana?

(zipan li) #1

As shown in the first fig.1, the unique count of group_id is larger than the count of logs. When search the logs with the same filters, I find only 8 logs (in fig.2), why the unique count of group_id is 9 ?



(Chris Tarnas) #2

I have seen this same bug - unique counts being too high. I've verified with queries outside of kibana.

(Chris Tarnas) #3

Just found the answer in the cardinality section of the elastic search manual: https://www.elastic.co/guide/en/elasticsearch/reference/current/search-aggregations-metrics-cardinality-aggregation.html

Adding something like this to the advanced json for the aggregation helps {"precision_threshold":1000}. Check the docs for how to set the threshold appropriately for your data.

(system) #4