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java.lang.Objectorg.apache.hadoop.io.MapFile.Writer
Writes a new map.
Constructor Summary | |
MapFile.Writer(FileSystem fs,
String dirName,
Class keyClass,
Class valClass)
Create the named map for keys of the named class. |
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MapFile.Writer(FileSystem fs,
String dirName,
Class keyClass,
Class valClass,
boolean compress)
Create the named map for keys of the named class. |
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MapFile.Writer(FileSystem fs,
String dirName,
WritableComparator comparator,
Class valClass)
Create the named map using the named key comparator. |
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MapFile.Writer(FileSystem fs,
String dirName,
WritableComparator comparator,
Class valClass,
boolean compress)
Create the named map using the named key comparator. |
Method Summary | |
void |
append(WritableComparable key,
Writable val)
Append a key/value pair to the map. |
void |
close()
Close the map. |
int |
getIndexInterval()
The number of entries that are added before an index entry is added. |
void |
setIndexInterval(int interval)
Sets the index interval. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
public MapFile.Writer(FileSystem fs, String dirName, Class keyClass, Class valClass) throws IOException
public MapFile.Writer(FileSystem fs, String dirName, Class keyClass, Class valClass, boolean compress) throws IOException
public MapFile.Writer(FileSystem fs, String dirName, WritableComparator comparator, Class valClass) throws IOException
public MapFile.Writer(FileSystem fs, String dirName, WritableComparator comparator, Class valClass, boolean compress) throws IOException
Method Detail |
public int getIndexInterval()
public void setIndexInterval(int interval)
getIndexInterval()
public void close() throws IOException
IOException
public void append(WritableComparable key, Writable val) throws IOException
IOException
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