TaskAttemptID for given taskId.TaskID with unique id among given job.HadoopFormatIO is a Transform for reading data from any source or writing data to any
sink which implements Hadoop InputFormat or OutputFormat.HadoopFormatIO.PTransform that reads from any data source which implements Hadoop InputFormat.InputSplit to be serialized using
Java's standard serialization mechanisms.PTransform that writes to any data sink which implements Hadoop OutputFormat.ExternalSynchronization which registers locks in the HDFS.HDFSSynchronization.MRJobConfig.ID.MRJobConfig.NUM_REDUCES.HadoopFormatIO .MRJobConfig.MAPREDUCE_JOB_DIR.MRJobConfig.OUTPUT_FORMAT_CLASS_ATTR.MRJobConfig.OUTPUT_KEY_CLASS.MRJobConfig.OUTPUT_VALUE_CLASS.MRJobConfig.PARTITIONER_CLASS_ATTR.HadoopFormatIO.Read.configurationTransformation.Write.Builder for creation of Write Transformation.