| Package | Description |
|---|---|
| org.apache.hadoop.io |
Generic i/o code for use when reading and writing data to the network,
to databases, and to files.
|
| org.apache.hadoop.io.serializer |
This package provides a mechanism for using different serialization frameworks
in Hadoop.
|
| Modifier and Type | Class | Description |
|---|---|---|
static class |
BooleanWritable.Comparator |
A Comparator optimized for BooleanWritable.
|
static class |
BytesWritable.Comparator |
A Comparator optimized for BytesWritable.
|
static class |
ByteWritable.Comparator |
A Comparator optimized for ByteWritable.
|
static class |
DoubleWritable.Comparator |
A Comparator optimized for DoubleWritable.
|
static class |
FloatWritable.Comparator |
A Comparator optimized for FloatWritable.
|
static class |
IntWritable.Comparator |
A Comparator optimized for IntWritable.
|
static class |
LongWritable.Comparator |
A Comparator optimized for LongWritable.
|
static class |
LongWritable.DecreasingComparator |
A decreasing Comparator optimized for LongWritable.
|
static class |
MD5Hash.Comparator |
A WritableComparator optimized for MD5Hash keys.
|
static class |
NullWritable.Comparator |
A Comparator "optimized" for NullWritable.
|
static class |
ShortWritable.Comparator |
A Comparator optimized for ShortWritable.
|
static class |
Text.Comparator |
A WritableComparator optimized for Text keys.
|
static class |
UTF8.Comparator |
Deprecated.
A WritableComparator optimized for UTF8 keys.
|
class |
WritableComparator |
A Comparator for
WritableComparables. |
| Constructor | Description |
|---|---|
Sorter(FileSystem fs,
RawComparator comparator,
java.lang.Class keyClass,
java.lang.Class valClass,
Configuration conf) |
Sort and merge using an arbitrary
RawComparator. |
Sorter(FileSystem fs,
RawComparator comparator,
java.lang.Class keyClass,
java.lang.Class valClass,
Configuration conf,
SequenceFile.Metadata metadata) |
Sort and merge using an arbitrary
RawComparator. |
| Modifier and Type | Class | Description |
|---|---|---|
class |
DeserializerComparator<T> |
A
RawComparator that uses a Deserializer to deserialize
the objects to be compared so that the standard Comparator can
be used to compare them. |
class |
JavaSerializationComparator<T extends java.io.Serializable & java.lang.Comparable<T>> |
A
RawComparator that uses a JavaSerialization
Deserializer to deserialize objects that are then compared via
their Comparable interfaces. |
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