FTS: 1MB search string: server write timeout

Build: 7.1.0-1831

• 3 node cluster with kv, query, index + kv, search + search
• Load travel sample
• create a fts default dynamic index index on travel sample
• create a 1MB search string

  search_string = "a" * 1048576

• Run query with this search string

  fts_query = {"explain": True, "fields": ["*"], "highlight": {}, "query": {"query": search_string}, "size": 1080}

Query fails with "server write timeout"

Logs:

https://cb-jira.s3.us-east-2.amazonaws.com/logs/test/collectinfo-2021-12-12T062200-ns_1%40172.23.96.141.zip
https://cb-jira.s3.us-east-2.amazonaws.com/logs/test/collectinfo-2021-12-12T062200-ns_1%40172.23.97.211.zip
https://cb-jira.s3.us-east-2.amazonaws.com/logs/test/collectinfo-2021-12-12T062200-ns_1%40172.23.97.212.zip