Spark structured streaming Elasticsearch integration issue

I am writing a Spark structured streaming application in which data processed with Spark needs be sink'ed to elastic search.
This is my development environment.
Hadoop 2.6.0-cdh5.16.1
Spark version 2.3.0.cloudera4
elasticsearch 6.8.0

I ran spark-shell as

spark2-shell --jars /tmp/elasticsearch-hadoop-2.3.2/dist/elasticsearch-hadoop-2.3.2.jar

import org.apache.spark.SparkContext
import org.apache.spark.SparkConf
import org.apache.spark.sql.functions._
import org.apache.spark.sql.SparkSession
import org.apache.spark.sql.types.{StructType, StructField, StringType, IntegerType, TimestampType};
import java.util.Calendar
import org.apache.spark.sql.SparkSession
import org.elasticsearch.spark.sql
import sys.process._

val checkPointDir = "/tmp/rt/checkpoint/"

val spark = SparkSession.builder
.config("fs.s3n.impl", "org.apache.hadoop.fs.s3native.NativeS3FileSystem")
.config("fs.s3n.awsAccessKeyId","aaabbb")
.config("fs.s3n.awsSecretAccessKey","aaabbbccc")
.config("spark.sql.streaming.checkpointLocation",s"$checkPointDir")
.config("es.index.auto.create", "true").getOrCreate()
import spark.implicits._

val requestSchema = new StructType().add("log_type", StringType).add("time_stamp", StringType).add("host_name", StringType).add("data_center", StringType).add("build", StringType).add("ip_trace", StringType).add("client_ip", StringType).add("protocol", StringType).add("latency", StringType).add("status", StringType).add("response_size", StringType).add("request_id", StringType).add("user_id", StringType).add("pageview_id", StringType).add("impression_id", StringType).add("source_impression_id", StringType).add("rnd", StringType).add("publisher_id", StringType).add("site_id", StringType).add("zone_id", StringType).add("slot_id", StringType).add("tile", StringType).add("content_id", StringType).add("post_id", StringType).add("postgroup_id", StringType).add("brand_id", StringType).add("provider_id", StringType).add("geo_country", StringType).add("geo_region", StringType).add("geo_city", StringType).add("geo_zip_code", StringType).add("geo_area_code", StringType).add("geo_dma_code", StringType).add("browser_group", StringType).add("page_url", StringType).add("document_referer", StringType).add("user_agent", StringType).add("cookies", StringType).add("kvs", StringType).add("notes", StringType).add("request", StringType)
val requestDF = spark.readStream.option("delimiter", "\t").format("com.databricks.spark.csv").schema(requestSchema).load("s3n://aa/logs/cc.com/r/year=" + Calendar.getInstance().get(Calendar.YEAR) + "/month=" + "%02d".format(Calendar.getInstance().get(Calendar.MONTH)+1) + "/day=" + "%02d".format(Calendar.getInstance().get(Calendar.DAY_OF_MONTH)) + "/hour=" + "%02d".format(Calendar.getInstance().get(Calendar.HOUR_OF_DAY)) + "/*.log")
requestDF.writeStream.format("org.elasticsearch.spark.sql").option("es.resource", "rt_request/doc").option("es.nodes", "localhost").outputMode("Append").start()

I have tried following two ways to sink the data in the DataSet to ES.
1.ds.writeStream().format("org.elasticsearch.spark.sql").start("spark/orders");
2.ds.writeStream().format("es").start("rt_request/doc");
In both cases I am getting the following error:

Caused by:
java.lang.UnsupportedOperationException: Data source es does not support streamed writing

java.lang.UnsupportedOperationException: Data source org.elasticsearch.spark.sql does not support streamed writing
at org.apache.spark.sql.execution.datasources.DataSource.createSink(DataSource.scala:320)
at org.apache.spark.sql.streaming.DataStreamWriter.start(DataStreamWriter.scala:293)
... 56 elided

ES-hadoop jar version I used is old one elasticsearch-hadoop-2.3.2.jar. we need 6 or above.

Now I use elasticsearch-hadoop-6* or above jars for it to work as a streaming sink.

I have downloaded it from https://artifacts.elastic.co/downloads/elasticsearch-hadoop/elasticsearch-hadoop-7.1.1.zip

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