I have roughly 50 million records in ES. The data was generated
artificially and is mostly duplicates. I am executing the following query
{
size: 0,
aggregations: {
by_month: {
date_histogram: {
field: "time_stamp",
interval: "1M",
format: "yyyy-MM-dd HH:mm"
},
aggregations: {
by_node_mac: {
terms: {
field: "node_mac"
},
aggregations: {
cardinality: {field: 'device_mac'}
}
}
}
}
}
}
I expect the cardinality of these to be in the hundreds but I am getting
hundreds of thousands an even millions as a count.
It looks like it's not counting the cardinality but actually counting the
number of records.
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