Packages

  • package root
    Definition Classes
    root
  • package com
    Definition Classes
    root
  • package adform
    Definition Classes
    com
  • package streamloader

    The entry point of the stream loader library is the StreamLoader class, which requires a $KafkaSource and a $Sink.

    The entry point of the stream loader library is the StreamLoader class, which requires a $KafkaSource and a $Sink. Once started it will subscribe to the provided topics and will start polling and sinking records. The sink has to be able to persist records and to look up committed offsets (technically this is optional, but without it there would be no way to provide any delivery guarantees). A large class of sinks are batch based, implemented as $RecordBatchingSink. This sink accumulate batches of records using some $RecordBatcher and once ready, stores them to some underlying $RecordBatchStorage. A common type of batch is file based, i.e. a batcher might write records to a temporary file and once the file is full the sink commits the file to some underlying storage, such as a database or a distributed file system like HDFS.

    A sketch of the class hierarchy illustrating the main classes and interfaces can be seen below.



    For concrete storage implementations see the clickhouse, hadoop, s3 and vertica packages. They also contain more file builder implementations than just the $CsvFileBuilder included in the core library.

    Definition Classes
    adform
  • package clickhouse
    Definition Classes
    streamloader
  • package hadoop
    Definition Classes
    streamloader
  • package parquet
  • FileStaging
  • HadoopFileStorage
  • MultiFileStaging
  • package iceberg
    Definition Classes
    streamloader
  • package model
    Definition Classes
    streamloader
  • package s3
    Definition Classes
    streamloader
  • package sink
    Definition Classes
    streamloader
  • package source
    Definition Classes
    streamloader
  • package util
    Definition Classes
    streamloader
  • package vertica
    Definition Classes
    streamloader

package hadoop

Ordering
  1. Alphabetic
Visibility
  1. Public
  2. Protected

Package Members

  1. package parquet

Type Members

  1. case class FileStaging(stagingPath: String, destinationPath: String) extends Product with Serializable
  2. class HadoopFileStorage[P] extends TwoPhaseCommitBatchStorage[PartitionedFileRecordBatch[P, FileRecordBatch], MultiFileStaging]

    A Hadoop compatible file system based storage, most likely used for storing to HDFS.

    A Hadoop compatible file system based storage, most likely used for storing to HDFS. Stores files and commits offsets to Kafka in a two-phase transaction. The prepare/commit phases for storing a file consist of first uploading it to a staging path and later atomically moving it to the final destination path.

  3. case class MultiFileStaging(fileStagings: Seq[FileStaging]) extends Product with Serializable

Value Members

  1. object HadoopFileStorage
  2. object MultiFileStaging extends Serializable

Ungrouped