Erro Data too large ao inserir documento no index

Blz pessoal?

Estou tentando inserindo vários documentos no index e vez ou outra recebo esse erro no retorno.
Não entendi bem o erro, mas ao que parece ele está limitando o tamanho do index.
Alguém sabe me dizer o porque do erro e como corrigir?

prirep state docs store
p STARTED 2112284 7.1gb

{"error":{"root_cause":[{"type":"circuit_breaking_exception","reason":"[parent] Data too large, data for [<http_request>] would be [8165998864/7.6gb], which is larger than the limit of [8160437862/7.5gb], real usage: [8165998864/7.6gb], new bytes reserved: [0/0b], usages [request=0/0b, fielddata=1891/1.8kb, in_flight_requests=0/0b, accounting=8454574/8mb]","bytes_wanted":8165998864,"bytes_limit":8160437862,"durability":"PERMANENT"}],"type":"circuit_breaking_exception","reason":"[parent] Data too large, data for [<http_request>] would be [8165998864/7.6gb], which is larger than the limit of [8160437862/7.5gb], real usage: [8165998864/7.6gb], new bytes reserved: [0/0b], usages [request=0/0b, fielddata=1891/1.8kb, in_flight_requests=0/0b, accounting=8454574/8mb]","bytes_wanted":8165998864,"bytes_limit":8160437862,"durability":"PERMANENT"},"status":429}