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 hadoop
    Definition Classes
    streamloader
  • package parquet
    Definition Classes
    hadoop
  • AvroParquetFileBuilder
  • DerivedAvroParquetFileBuilder
  • GenericAvroParquetFileBuilder
  • ParquetConfig
  • ProtoParquetFileBuilder

package parquet

Type Members

  1. abstract class AvroParquetFileBuilder[R] extends BaseFileBuilder[R]

    Base class for Avro based parquet file builders.

    Base class for Avro based parquet file builders.

    R

    type of the records being added.

  2. class DerivedAvroParquetFileBuilder[R] extends AvroParquetFileBuilder[R]

    Parquet writer that derives the Avro schema and encoder at compile time from the record type.

  3. class GenericAvroParquetFileBuilder extends AvroParquetFileBuilder[GenericRecord]

    A generic avro parquet writer that uses a user provider schema and accepts generic Avro records.

  4. case class ParquetConfig(compression: Option[Compression] = None, rowGroupSize: Option[Long] = None, pageSize: Option[Int] = None, pageRowCountLimit: Option[Int] = None, dictionaryPageSize: Option[Int] = None, writerVersion: Option[WriterVersion] = None, enableDictionaryEncoding: Option[Boolean] = None, enableBloomFilter: Option[Boolean] = None, enableByteStreamSplit: Option[Boolean] = None) extends Product with Serializable
  5. class ProtoParquetFileBuilder[R <: Message] extends BaseFileBuilder[R]

    A parquet file writer that writes protobuf encoded messages.

Ungrouped