Running standalone spark-2.3.0-bin-hadoop2.7 inside docker container
Data set is very small.
df1 schema: Dataframe[id:bigint, name:string] df2 schema: Dataframe[id:decimal(12,0), age: int]
Inner Join
df3 = df1.join(df2, df1.id == df2.id, 'inner')
df3 schema: Dataframe[id:bigint, name:string, age: int]
While executing df3.show(5)
, following error occurs
Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/usr/apache/spark-2.3.0-bin-hadoop2.7/python/pyspark/sql/dataframe.py", line 466, in collect
port = self._jdf.collectToPython() File "/usr/local/lib/python3.6/dist-packages/py4j/java_gateway.py", line 1257, in __call__
answer, self.gateway_client, self.target_id, self.name) File "/usr/apache/spark-2.3.0-bin-hadoop2.7/python/pyspark/sql/utils.py", line 63, in deco
return f(*a, **kw) File "/usr/local/lib/python3.6/dist-packages/py4j/protocol.py", line 328, in get_return_value
format(target_id, ".", name), value) py4j.protocol.Py4JJavaError: An error occurred while calling o43.collectToPython. : org.apache.spark.SparkException: Exception thrown in awaitResult:
at org.apache.spark.util.ThreadUtils$.awaitResult(ThreadUtils.scala:205)
at org.apache.spark.sql.execution.exchange.BroadcastExchangeExec.doExecuteBroadcast(BroadcastExchangeExec.scala:136)
Tried setting broadcast time out to -1 as per this suggestion , but got the same error
conf = SparkConf().set("spark.sql.broadcastTimeout","-1")
I was using incompatible version of JRE with Spark 2.3.
Error got resolved after updating JRE with openjdk-8-jre in Docker Image
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