spark任务失败，因为“找不到id的搜索上下文”。我试过几种选择，比如
spark.es.input.max.docs.per.250分区
spark.es.scroll.尺寸100
spark.es.batch.size.bytes 32mb
但任务仍在失败。我们使用的是：spark版本：2.3.1，elasticsearh cluster版本：6.5.4，elasticsearch spark版本：6.5.4

org.elasticsearch.hadoop.rest.EsHadoopInvalidRequest: org.elasticsearch.hadoop.rest.EsHadoopRemoteException: search_context_missing_exception: No search context found for id [4872076]
{"scroll_id":"DXF1ZXJ5QW5kRmV0Y2gBAAAAAABKV4wWRTJHQW9CdEZRTHVqMldEWnQxTUJnQQ=="}
    at org.elasticsearch.hadoop.rest.RestClient.checkResponse(RestClient.java:443)
    at org.elasticsearch.hadoop.rest.RestClient.execute(RestClient.java:400)
    at org.elasticsearch.hadoop.rest.RestClient.execute(RestClient.java:382)
    at org.elasticsearch.hadoop.rest.RestClient.scroll(RestClient.java:458)
    at org.elasticsearch.hadoop.rest.RestRepository.scroll(RestRepository.java:323)
    at org.elasticsearch.hadoop.rest.ScrollQuery.hasNext(ScrollQuery.java:115)
    at org.elasticsearch.spark.rdd.AbstractEsRDDIterator.hasNext(AbstractEsRDDIterator.scala:61)
    at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:408)
    at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:408)
    at scala.collection.Iterator$$anon$14.hasNext(Iterator.scala:533)
    at org.apache.spark.storage.memory.MemoryStore.putIteratorAsValues(MemoryStore.scala:216)
    at org.apache.spark.storage.BlockManager$$anonfun$doPutIterator$1.apply(BlockManager.scala:1092)
    at org.apache.spark.storage.BlockManager$$anonfun$doPutIterator$1.apply(BlockManager.scala:1083)
    at org.apache.spark.storage.BlockManager.doPut(BlockManager.scala:1018)
    at org.apache.spark.storage.BlockManager.doPutIterator(BlockManager.scala:1083)
    at org.apache.spark.storage.BlockManager.getOrElseUpdate(BlockManager.scala:809)
    at org.apache.spark.rdd.RDD.getOrCompute(RDD.scala:347)
    at org.apache.spark.rdd.RDD.iterator(RDD.scala:298)
    at org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:42)
    at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:336)
    at org.apache.spark.rdd.RDD.iterator(RDD.scala:300)
    at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:87)
    at org.apache.spark.scheduler.Task.run(Task.scala:112)
    at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:384)
    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)

任何帮助都将受到感谢。