Class HadoopStepConfig

java.lang.Object
software.amazon.awssdk.services.emr.model.HadoopStepConfig
All Implemented Interfaces:
Serializable, SdkPojo, ToCopyableBuilder<HadoopStepConfig.Builder,HadoopStepConfig>
@Generated("software.amazon.awssdk:codegen") public final class HadoopStepConfig extends Object implements SdkPojo, Serializable, ToCopyableBuilder<HadoopStepConfig.Builder,HadoopStepConfig>

A cluster step consisting of a JAR file whose main function will be executed. The main function submits a job for Hadoop to execute and waits for the job to finish or fail.

See Also:

  • Method Details

    • jar

      public final String jar()

      The path to the JAR file that runs during the step.

      Returns:
      The path to the JAR file that runs during the step.

    • hasProperties

      public final boolean hasProperties()
      For responses, this returns true if the service returned a value for the Properties property. This DOES NOT check that the value is non-empty (for which, you should check the isEmpty() method on the property). This is useful because the SDK will never return a null collection or map, but you may need to differentiate between the service returning nothing (or null) and the service returning an empty collection or map. For requests, this returns true if a value for the property was specified in the request builder, and false if a value was not specified.

    • properties

      public final Map<String,String> properties()

      The list of Java properties that are set when the step runs. You can use these properties to pass key-value pairs to your main function.

      Attempts to modify the collection returned by this method will result in an UnsupportedOperationException.

      This method will never return null. If you would like to know whether the service returned this field (so that you can differentiate between null and empty), you can use the hasProperties() method.

      Returns:
      The list of Java properties that are set when the step runs. You can use these properties to pass key-value pairs to your main function.

    • mainClass

      public final String mainClass()

      The name of the main class in the specified Java file. If not specified, the JAR file should specify a main class in its manifest file.

      Returns:
      The name of the main class in the specified Java file. If not specified, the JAR file should specify a main class in its manifest file.

    • hasArgs

      public final boolean hasArgs()
      For responses, this returns true if the service returned a value for the Args property. This DOES NOT check that the value is non-empty (for which, you should check the isEmpty() method on the property). This is useful because the SDK will never return a null collection or map, but you may need to differentiate between the service returning nothing (or null) and the service returning an empty collection or map. For requests, this returns true if a value for the property was specified in the request builder, and false if a value was not specified.

    • args

      public final List<String> args()

      The list of command line arguments to pass to the JAR file's main function for execution.

      Attempts to modify the collection returned by this method will result in an UnsupportedOperationException.

      This method will never return null. If you would like to know whether the service returned this field (so that you can differentiate between null and empty), you can use the hasArgs() method.

      Returns:
      The list of command line arguments to pass to the JAR file's main function for execution.

    • toBuilder

      public HadoopStepConfig.Builder toBuilder()
      Description copied from interface: ToCopyableBuilder
      Take this object and create a builder that contains all of the current property values of this object.
      Specified by:
      toBuilder in interface ToCopyableBuilder<HadoopStepConfig.Builder,HadoopStepConfig>
      Returns:
      a builder for type T

    • builder

      public static HadoopStepConfig.Builder builder()

    • serializableBuilderClass

      public static Class<? extends HadoopStepConfig.Builder> serializableBuilderClass()

    • hashCode

      public final int hashCode()
      Overrides:
      hashCode in class Object

    • equals

      public final boolean equals(Object obj)
      Overrides:
      equals in class Object

    • equalsBySdkFields

      public final boolean equalsBySdkFields(Object obj)
      Description copied from interface: SdkPojo
      Indicates whether some other object is "equal to" this one by SDK fields. An SDK field is a modeled, non-inherited field in an SdkPojo class, and is generated based on a service model.

      If an SdkPojo class does not have any inherited fields, equalsBySdkFields and equals are essentially the same.

      Specified by:
      equalsBySdkFields in interface SdkPojo
      Parameters:
      obj - the object to be compared with
      Returns:
      true if the other object equals to this object by sdk fields, false otherwise.

    • toString

      public final String toString()
      Returns a string representation of this object. This is useful for testing and debugging. Sensitive data will be redacted from this string using a placeholder value.
      Overrides:
      toString in class Object

    • getValueForField

      public final <T> Optional<T> getValueForField(String fieldName, Class<T> clazz)

    • sdkFields

      public final List<SdkField<?>> sdkFields()
      Specified by:
      sdkFields in interface SdkPojo
      Returns:
      List of SdkField in this POJO. May be empty list but should never be null.

    • sdkFieldNameToField

      public final Map<String,SdkField<?>> sdkFieldNameToField()
      Specified by:
      sdkFieldNameToField in interface SdkPojo
      Returns:
      The mapping between the field name and its corresponding field.