DownsampleImport

java.lang.Object

com.illumon.iris.importers.util.ImportBase

com.illumon.iris.importers.util.DownsampleImport

public class DownsampleImport
extends ImportBase

Easy to use wrapper for downsampling data.

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`static class`	`DownsampleImport.Builder`	The Builder class allows setting properties for a downsample import and provides a `DownsampleImport.Builder.build()` method which returns a DownsampleImport object that will use the configured properties to import batch data.

Field Summary

Fields

Modifier and Type Field Description

static int CHUNK_SIZE

Fields inherited from class com.illumon.iris.importers.util.ImportBase
destinationDirectory, destinationPartitions, namespace, outputMode, schemaService, table

Method Summary

Modifier and Type	Method	Description
`static DownsampleImportBuilder`	`builder(Database db, String namespace, String table, String timestampColumn, String period, String... keyColumns)`	Creates a new DownsampleImportBuilder object.
`long`	`run()`	Executes a downsample batch import as configured for the `DownsampleImport` object.

Methods inherited from class com.illumon.iris.importers.util.ImportBase

getFileList, getImportTableWriterFactory, getSourceFiles

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details
- CHUNK_SIZE
  
  public static final int CHUNK_SIZE
Method Details
- run
  
  public long run()
  
  Executes a downsample batch import as configured for the DownsampleImport object.
  
  Specified by:
  
  run in class ImportBase
  
  Returns:
  
  A long of the number of rows imported.
- builder
  
  public static DownsampleImportBuilder builder(Database db, String namespace, String table, String timestampColumn, String period, String... keyColumns)
  
  Creates a new DownsampleImportBuilder object. Method calls on this object can then be used to configure the import and run it.
  
  Parameters:
  
  db - database.
  
  namespace - namespace into which data will be imported.
  
  table - name of the table into which data will be imported.
  
  timestampColumn - timestamp column.
  
  period - downsample period.
  
  keyColumns - key columns.
  
  Returns:
  
  A new DownsampleImportBuilder object.