org.apache.hadoop.io
Class BloomMapFile
java.lang.Object
org.apache.hadoop.io.BloomMapFile
@InterfaceAudience.Public
@InterfaceStability.Stable
public class BloomMapFile
- extends Object
This class extends MapFile
and provides very much the same
functionality. However, it uses dynamic Bloom filters to provide
quick membership test for keys, and it offers a fast version of
BloomMapFile.Reader.get(WritableComparable, Writable)
operation, especially in
case of sparsely populated MapFile-s.
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
BLOOM_FILE_NAME
public static final String BLOOM_FILE_NAME
- See Also:
- Constant Field Values
HASH_COUNT
public static final int HASH_COUNT
- See Also:
- Constant Field Values
BloomMapFile
public BloomMapFile()
delete
public static void delete(FileSystem fs,
String name)
throws IOException
- Throws:
IOException
Copyright © 2014 Apache Software Foundation. All Rights Reserved.