Class

org.apache.spark

SparkConf

Related Doc: package spark

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class SparkConf extends Cloneable with Logging with Serializable

Configuration for a Spark application. Used to set various Spark parameters as key-value pairs.

Most of the time, you would create a SparkConf object with new SparkConf(), which will load values from any spark.* Java system properties set in your application as well. In this case, parameters you set directly on the SparkConf object take priority over system properties.

For unit tests, you can also call new SparkConf(false) to skip loading external settings and get the same configuration no matter what the system properties are.

All setter methods in this class support chaining. For example, you can write new SparkConf().setMaster("local").setAppName("My app").

Source
SparkConf.scala
Note

Once a SparkConf object is passed to Spark, it is cloned and can no longer be modified by the user. Spark does not support modifying the configuration at runtime.

Linear Supertypes
Serializable, Serializable, Logging, Cloneable, Cloneable, AnyRef, Any
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Inherited
  1. SparkConf
  2. Serializable
  3. Serializable
  4. Logging
  5. Cloneable
  6. Cloneable
  7. AnyRef
  8. Any
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Visibility
  1. Public
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Instance Constructors

  1. new SparkConf()

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    Create a SparkConf that loads defaults from system properties and the classpath

  2. new SparkConf(loadDefaults: Boolean)

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    loadDefaults

    whether to also load values from Java system properties

Value Members

  1. final def !=(arg0: Any): Boolean

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    Definition Classes
    AnyRef → Any
  2. final def ##(): Int

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    Definition Classes
    AnyRef → Any
  3. final def ==(arg0: Any): Boolean

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    Definition Classes
    AnyRef → Any
  4. final def asInstanceOf[T0]: T0

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    Definition Classes
    Any
  5. def clone(): SparkConf

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    Copy this object

    Copy this object

    Definition Classes
    SparkConf → AnyRef
  6. def contains(key: String): Boolean

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    Does the configuration contain a given parameter?

  7. final def eq(arg0: AnyRef): Boolean

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    Definition Classes
    AnyRef
  8. def equals(arg0: Any): Boolean

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    Definition Classes
    AnyRef → Any
  9. def finalize(): Unit

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    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  10. def get(key: String, defaultValue: String): String

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    Get a parameter, falling back to a default if not set

  11. def get(key: String): String

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    Get a parameter; throws a NoSuchElementException if it's not set

  12. def getAll: Array[(String, String)]

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    Get all parameters as a list of pairs

  13. def getAllWithPrefix(prefix: String): Array[(String, String)]

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    Get all parameters that start with prefix

  14. def getAppId: String

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    Returns the Spark application id, valid in the Driver after TaskScheduler registration and from the start in the Executor.

  15. def getAvroSchema: Map[Long, String]

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    Gets all the avro schemas in the configuration used in the generic Avro record serializer

  16. def getBoolean(key: String, defaultValue: Boolean): Boolean

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    Get a parameter as a boolean, falling back to a default if not set

  17. final def getClass(): Class[_]

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    Definition Classes
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  18. def getDouble(key: String, defaultValue: Double): Double

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    Get a parameter as a double, falling back to a default if not set

  19. def getExecutorEnv: Seq[(String, String)]

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    Get all executor environment variables set on this SparkConf

  20. def getInt(key: String, defaultValue: Int): Int

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    Get a parameter as an integer, falling back to a default if not set

  21. def getLong(key: String, defaultValue: Long): Long

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    Get a parameter as a long, falling back to a default if not set

  22. def getOption(key: String): Option[String]

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    Get a parameter as an Option

  23. def getSizeAsBytes(key: String, defaultValue: Long): Long

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    Get a size parameter as bytes, falling back to a default if not set.

  24. def getSizeAsBytes(key: String, defaultValue: String): Long

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    Get a size parameter as bytes, falling back to a default if not set.

    Get a size parameter as bytes, falling back to a default if not set. If no suffix is provided then bytes are assumed.

  25. def getSizeAsBytes(key: String): Long

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    Get a size parameter as bytes; throws a NoSuchElementException if it's not set.

    Get a size parameter as bytes; throws a NoSuchElementException if it's not set. If no suffix is provided then bytes are assumed.

    Exceptions thrown
  26. def getSizeAsGb(key: String, defaultValue: String): Long

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    Get a size parameter as Gibibytes, falling back to a default if not set.

    Get a size parameter as Gibibytes, falling back to a default if not set. If no suffix is provided then Gibibytes are assumed.

  27. def getSizeAsGb(key: String): Long

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    Get a size parameter as Gibibytes; throws a NoSuchElementException if it's not set.

    Get a size parameter as Gibibytes; throws a NoSuchElementException if it's not set. If no suffix is provided then Gibibytes are assumed.

    Exceptions thrown
  28. def getSizeAsKb(key: String, defaultValue: String): Long

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    Get a size parameter as Kibibytes, falling back to a default if not set.

    Get a size parameter as Kibibytes, falling back to a default if not set. If no suffix is provided then Kibibytes are assumed.

  29. def getSizeAsKb(key: String): Long

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    Get a size parameter as Kibibytes; throws a NoSuchElementException if it's not set.

    Get a size parameter as Kibibytes; throws a NoSuchElementException if it's not set. If no suffix is provided then Kibibytes are assumed.

    Exceptions thrown
  30. def getSizeAsMb(key: String, defaultValue: String): Long

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    Get a size parameter as Mebibytes, falling back to a default if not set.

    Get a size parameter as Mebibytes, falling back to a default if not set. If no suffix is provided then Mebibytes are assumed.

  31. def getSizeAsMb(key: String): Long

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    Get a size parameter as Mebibytes; throws a NoSuchElementException if it's not set.

    Get a size parameter as Mebibytes; throws a NoSuchElementException if it's not set. If no suffix is provided then Mebibytes are assumed.

    Exceptions thrown
  32. def getTimeAsMs(key: String, defaultValue: String): Long

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    Get a time parameter as milliseconds, falling back to a default if not set.

    Get a time parameter as milliseconds, falling back to a default if not set. If no suffix is provided then milliseconds are assumed.

  33. def getTimeAsMs(key: String): Long

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    Get a time parameter as milliseconds; throws a NoSuchElementException if it's not set.

    Get a time parameter as milliseconds; throws a NoSuchElementException if it's not set. If no suffix is provided then milliseconds are assumed.

    Exceptions thrown
  34. def getTimeAsSeconds(key: String, defaultValue: String): Long

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    Get a time parameter as seconds, falling back to a default if not set.

    Get a time parameter as seconds, falling back to a default if not set. If no suffix is provided then seconds are assumed.

  35. def getTimeAsSeconds(key: String): Long

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    Get a time parameter as seconds; throws a NoSuchElementException if it's not set.

    Get a time parameter as seconds; throws a NoSuchElementException if it's not set. If no suffix is provided then seconds are assumed.

    Exceptions thrown
  36. def hashCode(): Int

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    Definition Classes
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  37. def initializeLogIfNecessary(isInterpreter: Boolean): Unit

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    Attributes
    protected
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    Logging
  38. final def isInstanceOf[T0]: Boolean

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    Definition Classes
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  39. def isTraceEnabled(): Boolean

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    Attributes
    protected
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    Logging
  40. def log: Logger

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    Attributes
    protected
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    Logging
  41. def logDebug(msg: ⇒ String, throwable: Throwable): Unit

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    Attributes
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    Logging
  42. def logDebug(msg: ⇒ String): Unit

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    Logging
  43. def logError(msg: ⇒ String, throwable: Throwable): Unit

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    Logging
  44. def logError(msg: ⇒ String): Unit

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    Logging
  45. def logInfo(msg: ⇒ String, throwable: Throwable): Unit

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    protected
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    Logging
  46. def logInfo(msg: ⇒ String): Unit

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    protected
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    Logging
  47. def logName: String

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    Attributes
    protected
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    Logging
  48. def logTrace(msg: ⇒ String, throwable: Throwable): Unit

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    Attributes
    protected
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    Logging
  49. def logTrace(msg: ⇒ String): Unit

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    Logging
  50. def logWarning(msg: ⇒ String, throwable: Throwable): Unit

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    Logging
  51. def logWarning(msg: ⇒ String): Unit

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    protected
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    Logging
  52. final def ne(arg0: AnyRef): Boolean

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    Definition Classes
    AnyRef
  53. final def notify(): Unit

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    Definition Classes
    AnyRef
  54. final def notifyAll(): Unit

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    Definition Classes
    AnyRef
  55. def registerAvroSchemas(schemas: Schema*): SparkConf

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    Use Kryo serialization and register the given set of Avro schemas so that the generic record serializer can decrease network IO

  56. def registerKryoClasses(classes: Array[Class[_]]): SparkConf

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    Use Kryo serialization and register the given set of classes with Kryo.

    Use Kryo serialization and register the given set of classes with Kryo. If called multiple times, this will append the classes from all calls together.

  57. def remove(key: String): SparkConf

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    Remove a parameter from the configuration

  58. def set(key: String, value: String): SparkConf

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    Set a configuration variable.

  59. def setAll(settings: Traversable[(String, String)]): SparkConf

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    Set multiple parameters together

  60. def setAppName(name: String): SparkConf

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    Set a name for your application.

    Set a name for your application. Shown in the Spark web UI.

  61. def setExecutorEnv(variables: Array[(String, String)]): SparkConf

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    Set multiple environment variables to be used when launching executors.

    Set multiple environment variables to be used when launching executors. (Java-friendly version.)

  62. def setExecutorEnv(variables: Seq[(String, String)]): SparkConf

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    Set multiple environment variables to be used when launching executors.

    Set multiple environment variables to be used when launching executors. These variables are stored as properties of the form spark.executorEnv.VAR_NAME (for example spark.executorEnv.PATH) but this method makes them easier to set.

  63. def setExecutorEnv(variable: String, value: String): SparkConf

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    Set an environment variable to be used when launching executors for this application.

    Set an environment variable to be used when launching executors for this application. These variables are stored as properties of the form spark.executorEnv.VAR_NAME (for example spark.executorEnv.PATH) but this method makes them easier to set.

  64. def setIfMissing(key: String, value: String): SparkConf

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    Set a parameter if it isn't already configured

  65. def setJars(jars: Array[String]): SparkConf

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    Set JAR files to distribute to the cluster.

    Set JAR files to distribute to the cluster. (Java-friendly version.)

  66. def setJars(jars: Seq[String]): SparkConf

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    Set JAR files to distribute to the cluster.

  67. def setMaster(master: String): SparkConf

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    The master URL to connect to, such as "local" to run locally with one thread, "local[4]" to run locally with 4 cores, or "spark://master:7077" to run on a Spark standalone cluster.

  68. def setSparkHome(home: String): SparkConf

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    Set the location where Spark is installed on worker nodes.

  69. final def synchronized[T0](arg0: ⇒ T0): T0

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    Definition Classes
    AnyRef
  70. def toDebugString: String

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    Return a string listing all keys and values, one per line.

    Return a string listing all keys and values, one per line. This is useful to print the configuration out for debugging.

  71. def toString(): String

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    Definition Classes
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  72. final def wait(): Unit

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    Annotations
    @throws( ... )
  73. final def wait(arg0: Long, arg1: Int): Unit

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    Annotations
    @throws( ... )
  74. final def wait(arg0: Long): Unit

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    @throws( ... )

Inherited from Serializable

Inherited from Serializable

Inherited from Logging

Inherited from Cloneable

Inherited from Cloneable

Inherited from AnyRef

Inherited from Any

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