Spark 3.5.0 ScalaDoc < Back

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package root

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root
package org

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root
package apache

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org
package spark
Core Spark functionality.
Core Spark functionality. org.apache.spark.SparkContext serves as the main entry point to Spark, while org.apache.spark.rdd.RDD is the data type representing a distributed collection, and provides most parallel operations.
In addition, org.apache.spark.rdd.PairRDDFunctions contains operations available only on RDDs of key-value pairs, such as groupByKey and join; org.apache.spark.rdd.DoubleRDDFunctions contains operations available only on RDDs of Doubles; and org.apache.spark.rdd.SequenceFileRDDFunctions contains operations available on RDDs that can be saved as SequenceFiles. These operations are automatically available on any RDD of the right type (e.g. RDD[(Int, Int)] through implicit conversions.
Java programmers should reference the org.apache.spark.api.java package for Spark programming APIs in Java.
Classes and methods marked with Experimental are user-facing features which have not been officially adopted by the Spark project. These are subject to change or removal in minor releases.
Classes and methods marked with Developer API are intended for advanced users want to extend Spark through lower level interfaces. These are subject to changes or removal in minor releases.

Definition Classes
apache
package security

Definition Classes
spark
GroupMappingServiceProvider
HadoopDelegationTokenProvider

t

org.apache.spark.security

HadoopDelegationTokenProvider

trait HadoopDelegationTokenProvider extends AnyRef

::DeveloperApi:: Hadoop delegation token provider.

Annotations: @DeveloperApi()
Source: HadoopDelegationTokenProvider.scala

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HadoopDelegationTokenProvider
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abstract def delegationTokensRequired(sparkConf: SparkConf, hadoopConf: Configuration): Boolean
Returns true if delegation tokens are required for this service.
Returns true if delegation tokens are required for this service. By default, it is based on whether Hadoop security is enabled.
abstract def obtainDelegationTokens(hadoopConf: Configuration, sparkConf: SparkConf, creds: Credentials): Option[Long]
Obtain delegation tokens for this service and get the time of the next renewal.
Obtain delegation tokens for this service and get the time of the next renewal.
hadoopConf
Configuration of current Hadoop Compatible system.
creds
Credentials to add tokens and security keys to.
returns
If the returned tokens are renewable and can be renewed, return the time of the next renewal, otherwise None should be returned.
abstract def serviceName: String
Name of the service to provide delegation tokens.
Name of the service to provide delegation tokens. This name should be unique. Spark will internally use this name to differentiate delegation token providers.

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