We are running an 8 nodes cluster of elastic v1.5.
We are experiencing a strange behavior of statistical facets queries on one particular field (type double) of an index (4 shards, 1 replica).
It's starting to return very large values (like 1E18) for total, max, mean, sum_of_squares, variance and std_deviation. Min and count values are correct. It happens even on small doc count, we get the same result with sum aggregation.
Did anyone already experience this issue ?
How to fix it ? (close/open index, reindex, cluster restart)
Thanx in advance,