We have issues with our ElasticSearch cluster. Somehow, the CPU usage of the master nodes decreases over time (couple of days) and then crashes the cluster's state.
A screenshot of the CPU usage of Master 1:
We had to restart every node one-by-one to get the cluster up-and-running. We couldn't find related issues in es-cluster.log and in the gc.log file from that day, nothing different than common 'org.elasticsearch.index.mapper.MapperParsingException: failed to parse field [finished_processing.response.Result] of type [float] in document with id 'zLJXtnMBAqpKShEiTlJF'
Does someone know what process/issue could cause this issue? Did someone experienced it before?