Package org.apache.druid.segment

Class DictionaryEncodedColumnMerger.PersistedIdConversion

java.lang.Object

org.apache.druid.segment.DictionaryEncodedColumnMerger.PersistedIdConversion

All Implemented Interfaces:

Closeable, AutoCloseable

Enclosing class:

DictionaryEncodedColumnMerger<T extends Comparable<T>>

protected static class DictionaryEncodedColumnMerger.PersistedIdConversion
extends Object
implements Closeable

Peristent dictionary id conversion mappings, artifacts created during segment merge which map old dictionary ids to new dictionary ids. These persistent mappings are only used when the id mapping needs a lifetime longer than the merge of the column itself, such as when the column being merged is a 'parent' column of a projection.

See Also:

• DimensionMergerV9.markAsParent()
• DimensionMergerV9.attachParent(DimensionMergerV9, List)

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	PersistedIdConversion(File idConversionDir, Serializer idConversionSerializer)

Method Summary

Modifier and Type	Method	Description
void	close()
IntBuffer	getBuffer()

Methods inherited from class java.lang.Object

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

Constructor Details

PersistedIdConversion

protected PersistedIdConversion(File idConversionDir,
 Serializer idConversionSerializer)
                         throws IOException

Throws:

IOException

Method Details

getBuffer

@Nullable
public IntBuffer getBuffer()

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Throws:

IOException