We are using Elasticsearch 6.0 with 2 indices both of size 200gb(primary shards store) and 3 primary shards and 2 replicas. We want to delete one index fully. The cluster has 3 dedicated master nodes(1core, 4gb) and 5 data nodes( 8core, 32gb). Is it safe to delete the whole index with indexing traffic on other index still on? How long it might take and during that time will we see any degradation?
What will be the impact on in-memory data structure? Can this trigger old generation GC?
Deleting an entire index is quite a lightweight operation. I don't think I've heard of any cases where it had an impact on other cluster activity.
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