Is there any relationship between elasticsearch_indices_get_missing_total and elasticsearch_indices_merges_docs_total ?

I got rate(elasticsearch_indices_get_missing_total) > 100 alert, but I could not find exception log.

How can I monitor the service ip to check the situation of indices get missing?

CodePudding user response：

It's not a missing index and not an error but a missing document. So your application requested a document which is not in Elasticsearch. Maybe it got deleted, maybe never got indexed in the fist place, maybe user entered incorrect ID and system works as expected.

Also, merges is different thing entirely. Elasticsearch stores data in storage blobs called "segments" and it merges them together every once in a while because it's much more efficient to work with larger segments than with many small ones. So the doc count in merged segments is a very "internal" metric, only needed for very specific situations.