Class OrcSerDe

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

A serializer to use for converting data to the ORC format before storing it in Amazon S3. For more information, see Apache ORC.

See Also:

  • Method Details

    • stripeSizeBytes

      public final Integer stripeSizeBytes()

      The number of bytes in each stripe. The default is 64 MiB and the minimum is 8 MiB.

      Returns:
      The number of bytes in each stripe. The default is 64 MiB and the minimum is 8 MiB.

    • blockSizeBytes

      public final Integer blockSizeBytes()

      The Hadoop Distributed File System (HDFS) block size. This is useful if you intend to copy the data from Amazon S3 to HDFS before querying. The default is 256 MiB and the minimum is 64 MiB. Firehose uses this value for padding calculations.

      Returns:
      The Hadoop Distributed File System (HDFS) block size. This is useful if you intend to copy the data from Amazon S3 to HDFS before querying. The default is 256 MiB and the minimum is 64 MiB. Firehose uses this value for padding calculations.

    • rowIndexStride

      public final Integer rowIndexStride()

      The number of rows between index entries. The default is 10,000 and the minimum is 1,000.

      Returns:
      The number of rows between index entries. The default is 10,000 and the minimum is 1,000.

    • enablePadding

      public final Boolean enablePadding()

      Set this to true to indicate that you want stripes to be padded to the HDFS block boundaries. This is useful if you intend to copy the data from Amazon S3 to HDFS before querying. The default is false.

      Returns:
      Set this to true to indicate that you want stripes to be padded to the HDFS block boundaries. This is useful if you intend to copy the data from Amazon S3 to HDFS before querying. The default is false.

    • paddingTolerance

      public final Double paddingTolerance()

      A number between 0 and 1 that defines the tolerance for block padding as a decimal fraction of stripe size. The default value is 0.05, which means 5 percent of stripe size.

      For the default values of 64 MiB ORC stripes and 256 MiB HDFS blocks, the default block padding tolerance of 5 percent reserves a maximum of 3.2 MiB for padding within the 256 MiB block. In such a case, if the available size within the block is more than 3.2 MiB, a new, smaller stripe is inserted to fit within that space. This ensures that no stripe crosses block boundaries and causes remote reads within a node-local task.

      Firehose ignores this parameter when OrcSerDe$EnablePadding is false.

      Returns:
      A number between 0 and 1 that defines the tolerance for block padding as a decimal fraction of stripe size. The default value is 0.05, which means 5 percent of stripe size.

      For the default values of 64 MiB ORC stripes and 256 MiB HDFS blocks, the default block padding tolerance of 5 percent reserves a maximum of 3.2 MiB for padding within the 256 MiB block. In such a case, if the available size within the block is more than 3.2 MiB, a new, smaller stripe is inserted to fit within that space. This ensures that no stripe crosses block boundaries and causes remote reads within a node-local task.

      Firehose ignores this parameter when OrcSerDe$EnablePadding is false.

    • compression

      public final OrcCompression compression()

      The compression code to use over data blocks. The default is SNAPPY.

      If the service returns an enum value that is not available in the current SDK version, compression will return OrcCompression.UNKNOWN_TO_SDK_VERSION. The raw value returned by the service is available from compressionAsString().

      Returns:
      The compression code to use over data blocks. The default is SNAPPY.
      See Also:

    • compressionAsString

      public final String compressionAsString()

      The compression code to use over data blocks. The default is SNAPPY.

      If the service returns an enum value that is not available in the current SDK version, compression will return OrcCompression.UNKNOWN_TO_SDK_VERSION. The raw value returned by the service is available from compressionAsString().

      Returns:
      The compression code to use over data blocks. The default is SNAPPY.
      See Also:

    • hasBloomFilterColumns

      public final boolean hasBloomFilterColumns()
      For responses, this returns true if the service returned a value for the BloomFilterColumns 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.

    • bloomFilterColumns

      public final List<String> bloomFilterColumns()

      The column names for which you want Firehose to create bloom filters. The default is null.

      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 hasBloomFilterColumns() method.

      Returns:
      The column names for which you want Firehose to create bloom filters. The default is null.

    • bloomFilterFalsePositiveProbability

      public final Double bloomFilterFalsePositiveProbability()

      The Bloom filter false positive probability (FPP). The lower the FPP, the bigger the Bloom filter. The default value is 0.05, the minimum is 0, and the maximum is 1.

      Returns:
      The Bloom filter false positive probability (FPP). The lower the FPP, the bigger the Bloom filter. The default value is 0.05, the minimum is 0, and the maximum is 1.

    • dictionaryKeyThreshold

      public final Double dictionaryKeyThreshold()

      Represents the fraction of the total number of non-null rows. To turn off dictionary encoding, set this fraction to a number that is less than the number of distinct keys in a dictionary. To always use dictionary encoding, set this threshold to 1.

      Returns:
      Represents the fraction of the total number of non-null rows. To turn off dictionary encoding, set this fraction to a number that is less than the number of distinct keys in a dictionary. To always use dictionary encoding, set this threshold to 1.

    • formatVersion

      public final OrcFormatVersion formatVersion()

      The version of the file to write. The possible values are V0_11 and V0_12. The default is V0_12.

      If the service returns an enum value that is not available in the current SDK version, formatVersion will return OrcFormatVersion.UNKNOWN_TO_SDK_VERSION. The raw value returned by the service is available from formatVersionAsString().

      Returns:
      The version of the file to write. The possible values are V0_11 and V0_12. The default is V0_12.
      See Also:

    • formatVersionAsString

      public final String formatVersionAsString()

      The version of the file to write. The possible values are V0_11 and V0_12. The default is V0_12.

      If the service returns an enum value that is not available in the current SDK version, formatVersion will return OrcFormatVersion.UNKNOWN_TO_SDK_VERSION. The raw value returned by the service is available from formatVersionAsString().

      Returns:
      The version of the file to write. The possible values are V0_11 and V0_12. The default is V0_12.
      See Also:

    • toBuilder

      public OrcSerDe.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<OrcSerDe.Builder,OrcSerDe>
      Returns:
      a builder for type T

    • builder

      public static OrcSerDe.Builder builder()

    • serializableBuilderClass

      public static Class<? extends OrcSerDe.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.