log repeat

[ShakeFake]

1：k8s cluster with four node，there has a openresty，and some services be collected log。
2：openresty has thousands QPS，and collect log in access.log。openresty has a busybus container in the pod，and the pod collect the log with command "tail -F {logPATH}"。
3：start fluentd with daemonset controller, and collect the log to es。
With sometimes, there will have some log repat in the es。
there is the version of my struction
quay.io/fluentd_elasticsearch/fluentd:v3.4.0
docker.elastic.co/elasticsearch/elasticsearch:7.6.2
docker.elastic.co/kibana/kibana:7.6.2

what this can't be?

and there is some error in my fluentd log.

"message":"dump an error event: error_class=Fluent::Plugin::ElasticsearchErrorHandler::ElasticsearchError error="400 - Rejected by Elasticsearch [error type]: illegal_argument_exception [reason]: 'Limit of mapping depth [20] in index [k8s-fluentd-default-2022.08.15-000117] has been exceeded due to object field
"message":"dump an error event: error_class=Fluent::Plugin::ElasticsearchErrorHandler::ElasticsearchError error="400 - Rejected by Elasticsearch [error type]: illegal_argument_exception [reason]: 'Limit of total fields [1000] in index [k8s-fluentd-default-2022.08.15-000117] has been exceeded
"message":"dump an error event: error_class=ArgumentError error="string length (3852) exceeds the limit 128" location="/usr/local/bundle/gems/fluent-plugin-elasticsearch-5.1.4/lib/fluent/plugin/out_elasticsearch.rb:562:in
`parse'" tag="Fluent::ElasticsearchOutput::TimeParser.error" time=2022-08-16 06:36:26.646490456 +0000
record={"tag"=>"kubernetes.var.log.containers.fluentd-es-4fjrg_logging_fluentd-es-77ba954163c39d56d66af8b3019464136e8ebddda089aa1a8c8094c4d2031043.log"