Java 此错误是什么意思（SimpleHttpConnectionManager使用不正确）？_Java_Python_Scala_<img Src="//i.stack.imgur.com/RUiNP.png" Height="16" Width="18" Alt="" Class="sponsor Tag Img">elasticsearch_Apache Spark

Java 此错误是什么意思（SimpleHttpConnectionManager使用不正确）？

java python scala apache-spark

Java 此错误是什么意思（SimpleHttpConnectionManager使用不正确）？,java,python,scala,elasticsearch,apache-spark,Java,Python,Scala,elasticsearch,Apache Spark,我正在尝试从数据中读取ElasticSearch以激发 conf = {"es.resource":"sflow_*/sflow","es.nodes":"ES01","es.query":'some query'} rdd = sc.newAPIHadoopRDD("org.elasticsearch.hadoop.mr.EsInputFormat", "org.apache.hadoop.io.NullWritable", "org.elasticsearch.hadoop.mr.L

我正在尝试从数据中读取ElasticSearch以激发

conf = {"es.resource":"sflow_*/sflow","es.nodes":"ES01","es.query":'some query'}

rdd = sc.newAPIHadoopRDD("org.elasticsearch.hadoop.mr.EsInputFormat",    "org.apache.hadoop.io.NullWritable", "org.elasticsearch.hadoop.mr.LinkedMapWritable", conf=conf)

rdd.take(2)

在rdd.take（2）之后，进程将卡住并发出如下警告日志

16/03/14 20:52:07 WARN httpclient.SimpleHttpConnectionManager: SimpleHttpConnectionManager being used
incorrectly.  Be sure that HttpMethod.releaseConnection() is always called and that only one thread and/or 
method is using this connection manager at a time.

但是使用rdd.first（）将始终成功返回结果。你知道为什么吗