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java.lang.Objectorg.apache.hadoop.io.compress.CompressionCodecFactory
public class CompressionCodecFactory
A factory that will find the correct codec for a given filename.
Field Summary | |
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static org.apache.commons.logging.Log |
LOG
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Constructor Summary | |
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CompressionCodecFactory(Configuration conf)
Find the codecs specified in the config value io.compression.codecs and register them. |
Method Summary | |
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CompressionCodec |
getCodec(Path file)
Find the relevant compression codec for the given file based on its filename suffix. |
static java.util.List<java.lang.Class<? extends CompressionCodec>> |
getCodecClasses(Configuration conf)
Get the list of codecs listed in the configuration |
static void |
main(java.lang.String[] args)
A little test program. |
static java.lang.String |
removeSuffix(java.lang.String filename,
java.lang.String suffix)
Removes a suffix from a filename, if it has it. |
static void |
setCodecClasses(Configuration conf,
java.util.List<java.lang.Class> classes)
Sets a list of codec classes in the configuration. |
java.lang.String |
toString()
Print the extension map out as a string. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Field Detail |
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public static final org.apache.commons.logging.Log LOG
Constructor Detail |
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public CompressionCodecFactory(Configuration conf)
Method Detail |
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public java.lang.String toString()
toString
in class java.lang.Object
public static java.util.List<java.lang.Class<? extends CompressionCodec>> getCodecClasses(Configuration conf)
conf
- the configuration to look in
public static void setCodecClasses(Configuration conf, java.util.List<java.lang.Class> classes)
conf
- the configuration to modifyclasses
- the list of classes to setpublic CompressionCodec getCodec(Path file)
file
- the filename to check
public static java.lang.String removeSuffix(java.lang.String filename, java.lang.String suffix)
filename
- the filename to stripsuffix
- the suffix to remove
public static void main(java.lang.String[] args) throws java.lang.Exception
args
-
java.lang.Exception
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