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|-# This file contains a few additional setting that are useful for|
|-# running streaming jobs in Spark. Copy this file as streaming-env.sh .|
|-# Note that this shell script will be read after spark-env.sh, so settings|
|-# in this file may override similar settings (if present) in spark-env.sh .|
|-# Using concurrent GC is strongly recommended as it can significantly|
|-# reduce GC related pauses.|
|-# Using Kryo serialization can improve serialization performance|
|-# and therefore the throughput of the Spark Streaming programs. However,|
|-# using Kryo serialization with custom classes may required you to|
|-# register the classes with Kryo. Refer to the Spark documentation|
|-# for more details.|
|-# SPARK_JAVA_OPTS+=" -Dspark.serializer=spark.KryoSerializer"|