High Search Rejected

Elastic Stack Elasticsearch
1

Hi,

My ELasticsearch thread pool search has very high rejected ration. I have sufficient 72 CPU nodes.

node_name name active queue rejected
ES10 search 7 0 22703
ES07 search 0 0 0
ES08 search 3 0 13108
ES00 search 3 0 9551
ES11 search 3 0 19003
ES09 search 5 0 21755
ES03 search 6 0 20115
ES12 search 4 0 10777
ES05 search 0 0 0
ES06 search 0 0 0
ES02 search 8 0 20093
ES01 search 6 0 20370

Not sure why its high, I saw cpu is good and query cache. Search queries are taking time.

2

How much RAM does the nodes have? How much data does each node hold? What type of storage are you using? Which version of Elasticsearch are you using?

3

I'm using elastic cloud . here is the complete details
Total
15.29 TB storage
522 GB RAM
71.4 vCPU

4

version of elasticsearch is 7.13.2

5

What is the full output of the cluster stats API? What kind of load is the cluster under?

6

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