I'm wondering if anyone had seen something like this before: I have a 5 node cluster with a bunch of large date based indices (I.e. each daily index can have 50m docs). I have some kibana dashboards which visualize the data. Every so often one of the histogram graphs displays incorrect data - it creates a huge spike for one day and everything else is unreadable. The spike is incorrect (I.e. the elasticsearch data result is actually wrong). The weirder thing is that even on the same graph it is inconsistent - it looks OK at one point and then after a refresh it shows the bad data and then randomly switches back and forth. Is it possible that a replica or shard is corrupt? (The status of the cluster is green). Any thoughts on what may cause this or an approach for debugging it?
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