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Packages that use RawComparator | |
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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. |
org.apache.hadoop.mapred | A software framework for easily writing applications which process vast amounts of data (multi-terabyte data-sets) parallelly on large clusters (thousands of nodes) built of commodity hardware in a reliable, fault-tolerant manner. |
org.apache.hadoop.record | Hadoop record I/O contains classes and a record description language translator for simplifying serialization and deserialization of records in a language-neutral manner. |
Uses of RawComparator in org.apache.hadoop.io |
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Classes in org.apache.hadoop.io that implement RawComparator | |
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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 |
Text.Comparator
A WritableComparator optimized for Text keys. |
static class |
UTF8.Comparator
Deprecated. A WritableComparator optimized for UTF8 keys. |
class |
WritableComparator
A Comparator for WritableComparable s. |
Constructors in org.apache.hadoop.io with parameters of type RawComparator | |
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SequenceFile.Sorter(FileSystem fs,
RawComparator comparator,
Class keyClass,
Class valClass,
Configuration conf)
Sort and merge using an arbitrary RawComparator . |
Uses of RawComparator in org.apache.hadoop.io.serializer |
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Classes in org.apache.hadoop.io.serializer that implement RawComparator | |
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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 Serializable & Comparable<T>>
A RawComparator that uses a JavaSerialization
Deserializer to deserialize objects that are then compared via
their Comparable interfaces. |
Uses of RawComparator in org.apache.hadoop.mapred |
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Methods in org.apache.hadoop.mapred that return RawComparator | |
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RawComparator |
JobConf.getOutputKeyComparator()
Get the RawComparator comparator used to compare keys. |
RawComparator |
JobConf.getOutputValueGroupingComparator()
Get the user defined WritableComparable comparator for
grouping keys of inputs to the reduce. |
Method parameters in org.apache.hadoop.mapred with type arguments of type RawComparator | |
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void |
JobConf.setOutputKeyComparatorClass(Class<? extends RawComparator> theClass)
Set the RawComparator comparator used to compare keys. |
void |
JobConf.setOutputValueGroupingComparator(Class<? extends RawComparator> theClass)
Set the user defined RawComparator comparator for
grouping keys in the input to the reduce. |
Uses of RawComparator in org.apache.hadoop.record |
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Classes in org.apache.hadoop.record that implement RawComparator | |
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class |
RecordComparator
A raw record comparator base class |
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