WARN Use an existing SparkContext, some configuration may not take effect.
I wanted to restart the spark streaming app, so stopped the
running and issued a new spark submit. Why and how it will use a existing
SparkContext?
WARN Spark is not running in local mode, therefore the checkpoint
directory must not be on the local filesystem. Directory
'file:/efs/checkpoint' appears to be on the local filesystem.
WARN overriding enable.auto.commit to false for executor
WARN overriding auto.offset.reset to none for executor
WARN overriding executor group.id to spark-executor-mygroupid
WARN overriding receive.buffer.bytes to 65536 see KAFKA-3135
WARN overriding enable.auto.commit to false for executor
WARN overriding auto.offset.reset to none for executor
