Elasticsearch search is not working properly

Elastic Stack Elasticsearch
1

Elasticsearch search is very slow and some times search is not working accurately in application.

Elasticsearch version: 5.6.5
OS: CentOS, version: 7
HeapSize: 28Gb

My cluster Health
{ "cluster_name" : "app-prdx", "status" : "green", "timed_out" : false, "number_of_nodes" : 9, "number_of_data_nodes" : 3, "active_primary_shards" : 2, "active_shards" : 6, "relocating_shards" : 0, "initializing_shards" : 0, "unassigned_shards" : 0, "delayed_unassigned_shards" : 0, "number_of_pending_tasks" : 0, "number_of_in_flight_fetch" : 0, "task_max_waiting_in_queue_millis" : 0, "active_shards_percent_as_number" : 100.0 }

My Index details:
size: 172Gi (514Gi)
docs: 1,090,954,956 (4,911,070,677)

2

You will need to be a little more descriptive on what you mean here.

Slow in what sense? How are you measuring it? Are you monitoring your cluster?
Not accurate how?

3

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