Spark task are failing: No search context found for id

Elastic Stack Elasticsearch
1

Spark tasks are failing because of "No search context found for id".
I tried a couple of options like
spark.es.input.max.docs.per.partition 250
spark.es.scroll.size 100
spark.es.batch.size.bytes 32mb

But tasks are still failing. we are using:
Spark version: 2.3.1,
Elasticsearh Cluster version: 6.5.4(Elastic.co hosted service 30*2 GB deployment),
elasticsearch-spark version: 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)
2

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