获取数据到elasticsearch时出错。

{
"error": {
    "root_cause": [
        {
            "type": "remote_transport_exception",
            "reason": "[10.23.10.165][10.23.10.165:9300][indices:data/write/bulk[s][p]]"
        }
    ],
    "type": "es_rejected_execution_exception",
    "reason": "rejected execution of processing of [249060237][indices:data/write/bulk[s][p]]: request: BulkShardRequest [[19-01-2022_content_vod][0]] containing [index {[content_vod][_doc][2581344], source[n/a, actual length: [3kb], max length: 2kb]}], target allocation id: 7kXMhnrkREmTkY5X9Dr8LQ, primary term: 8 on EsThreadPoolExecutor[name = 10.23.10.165/write, queue capacity = 5000, org.elasticsearch.common.util.concurrent.EsThreadPoolExecutor@6b7dd2e7[Running, pool size = 4, active threads = 4, queued tasks = 5000, completed tasks = 11276660]]"
},
"status": 429

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}

我的设置是默认设置，为了解决这个问题，所有elasticsearch设置都应该更改。
请建议理想的线程池设置。

我的Elasticsearch运行在C5.8xLarge机器上，有4个节点。