1、Elasticsearch的Bulk API允许批量提交index和delete请求。如：
（1）用法1

BulkRequestBuilder bulkRequest = client.prepareBulk();
bulkRequest.add(client.prepareIndex("index1", "type1", "id1").setSource(source);
bulkRequest.add(client.prepareIndex("index2", "type2", "id2").setSource(source);
BulkResponse bulkResponse = bulkRequest.execute().actionGet();

（2）用法二

BulkProcessor bulkProcessor = BulkProcessor.builder(  
        client,    
        new BulkProcessor.Listener() {  
            @Override  
            public void beforeBulk(long executionId,  
                                   BulkRequest request) { ... }   

            @Override  
            public void afterBulk(long executionId,  
                                  BulkRequest request,  
                                  BulkResponse response) { ... }   

            @Override  
            public void afterBulk(long executionId,  
                                  BulkRequest request,  
                                  Throwable failure) { ... }   
        })  
        .setBulkActions(10000)   
        .setBulkSize(new ByteSizeValue(1, ByteSizeUnit.GB))   
        .setFlushInterval(TimeValue.timeValueSeconds(5))   
        .build();  
bulkProcessor.add(new IndexRequest("index1", "type1", "id1").source(source1));  
bulkProcessor.add(new DeleteRequest("index2", "type2", "id2"); 

（3）说明
1）beforeBulk会在批量提交之前执行，可以从BulkRequest中获取请求信息request.requests()或者请求数量request.numberOfActions()。
2） 第一个afterBulk会在批量成功后执行，可以跟beforeBulk配合计算批量所需时间。
3）第二个afterBulk会在批量失败后执行。
4）在例子中，当请求超过10000个（default=1000）或者总大小超过1GB（default=5MB）时，触发批量提交动作。