我有一个大约5 M条目的切片（为了简单起见，假设每个条目都是一个字节切片，使用getIndexerItem函数Map到索引器项），我将其平均分配给200个go例程。每个go例程然后调用长度为5 M/200的切片的push函数。
根据我对Refresh: wait_for的理解，每当向弹性请求时，只有当该请求所做的更改对搜索可见时（IMO翻译为批量请求队列不再有此特定请求），它才会完成。

error indexing item: es_rejected_execution_exception:
rejected execution of processing of [358323543][indices:data/write/bulk[s][p]]: 
request: BulkShardRequest [[ankit-test][3]] containing [3424] requests blocking until refresh,
target allocation id: someId, primary term: 1 on EsThreadPoolExecutor
[
    name = machine_name/write, queue capacity = 200, org.elasticsearch.common.util.concurrent.EsThreadPoolExecutor@1f483ca1
    [Running, pool size = 32, active threads = 32, queued tasks = 200, completed tasks = 44390708]
]

字符串
所有的条目都指向同一个索引ankit-test。

func (e *esClient) getIndexerItem(index string, id string, body []byte) esutil.BulkIndexerItem {
    return esutil.BulkIndexerItem{
        Index:        index,
        DocumentID:   id,
        Body:         bytes.NewReader(body),
        Action:       "index",
        DocumentType: "logs",
        OnFailure: func(_ context.Context, item esutil.BulkIndexerItem, res esutil.BulkIndexerResponseItem, err error) {
            if err != nil {
                fmt.Printf("error indexing item: %s\n", err.Error())
            } else {
                fmt.Printf("error indexing item: %s: %s\n", res.Error.Type, res.Error.Reason)
            }
        },
    }
}

func (e *esClient) push(data []esutil.BulkIndexerItem) (*esutil.BulkIndexerStats, error) {
    indexer, err := esutil.NewBulkIndexer(esutil.BulkIndexerConfig{
        Client: e.client,
        Refresh: "wait_for",
        NumWorkers: 1,
        OnError: func(ctx context.Context, err error) {
            fmt.Printf("received onError %s\n", err.Error())
        },
    })
    if err != nil {
        return nil, fmt.Errorf("error creating bulk indexer: %s", err)
    }

    ctx := context.Background()
    for _, d := range data {
        if err := indexer.Add(ctx, d); err != nil {
            fmt.Printf("error adding data to indexer: %s\n", err)
        }
    }
    if err := indexer.Close(ctx); err != nil {
        fmt.Printf("error flushing and closing indexer: %s\n", err)
    }

    indexerStats := indexer.Stats()
    return &indexerStats, nil
}

型
假设没有其他进程以任何方式与索引交互。