4 instances each have 4 processors.
 Set refresh interval to -1 and replications to '0' and other basic
 configurations required for better writing.

2 Core instances
  - 8 vCPU, 16 GiB memory, EBS only storage
  - EBS Storage:1000 GiB

1 Master node
  - 1 vCPU, 3.8 GiB memory, 410 SSD GB storage

executor-memory - 8g
spark.executor.instances=2
spark.executor.cores=4

es.batch.size.bytes - 6MB
es.batch.size.entries - 10000
es.batch.write.refresh - false

-1116 bytes result sent to driver

JavaRDD<String> javaRDD = jsc.textFile("<S3 Path>");
    JavaEsSpark.saveJsonToEs(javaRDD,"<Index name>");