1. Es-Hadoop异常：
org.elasticsearch.hadoop.EsHadoopException: Could not write all entries [615/300864] (maybe ES was overloaded?). Bailing out... at org.elasticsearch.hadoop.rest.RestRepository.flush(RestRepository.java:235) at org.elasticsearch.hadoop.rest.RestRepository.doWriteToIndex(RestRepository.java:186) at org.elasticsearch.hadoop.rest.RestRepository.writeToIndex(RestRepository.java:149) at org.elasticsearch.spark.rdd.EsRDDWriter.write(EsRDDWriter.scala:49) at org.elasticsearch.spark.rdd.EsSpark$$anonfun$saveToEs$1.apply(EsSpark.scala:67) at org.elasticsearch.spark.rdd.EsSpark$$anonfun$saveToEs$1.apply(EsSpark.scala:67) at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:66) at org.apache.spark.scheduler.Task.run(Task.scala:88) at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:214) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748)