What is the default number of cores and amount of memory allocated to an application in Spark? - Big Data In Real World

What is the default number of cores and amount of memory allocated to an application in Spark?

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Number of cores

spark.executor.cores controls the number of cores available for the executors. 

By default, it is 1 core per executor in YARN and all available cores in standalone cluster mode.

Amount of executor memory

spark.executor.memory controls the amount of memory allocated for each executor.

By default, each executor gets 1 GB.

Amount of driver memory

Cluster mode

spark.driver.memory controls the amount of memory allocated for the driver process in cluster mode.

By default, each executor gets 1 GB.

Client mode

In client mode, this config must not be set through the SparkConf directly in your application, because the driver JVM has already started at that point. Instead, please set this through the –driver-memory command line option or in your default properties file.

Big Data In Real World
Big Data In Real World
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What is the default number of cores and amount of memory allocated to an application in Spark?
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