We use rolling daily indexes. After we deleted one, Elasticsearch decided
to relocate a replica shard to another node. Totally fine, that's what I
expect Elasticsearch to do.
What I didn't expect was for search queries that might have used that shard
to bomb out. Writes to different indexes still performed fine, but searches
either timed out or returned with very long response times. Once the shard
completed relocating (15min for a 26gb shard), performance returned to
We have all the logs and marvel data for this time period, and I don't see
anything that seems out of the ordinary. What logs/settings I should be
looking at so we don't have this problem again?
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