I
- Vertex idV
- Vertex dataE
- Edge dataX
- Value typepublic class SequenceFileVertexInputFormat<I extends org.apache.hadoop.io.WritableComparable,V extends org.apache.hadoop.io.Writable,E extends org.apache.hadoop.io.Writable,X extends Vertex<I,V,E>> extends VertexInputFormat<I,V,E>
SequenceFileInputFormat
.Modifier and Type | Class and Description |
---|---|
static class |
SequenceFileVertexInputFormat.SequenceFileVertexReader<I extends org.apache.hadoop.io.WritableComparable,V extends org.apache.hadoop.io.Writable,E extends org.apache.hadoop.io.Writable,X extends Vertex<I,V,E>>
Vertex reader used with
SequenceFileVertexInputFormat . |
Modifier and Type | Field and Description |
---|---|
protected org.apache.hadoop.mapreduce.lib.input.SequenceFileInputFormat<I,X> |
sequenceFileInputFormat
Internal input format
|
Constructor and Description |
---|
SequenceFileVertexInputFormat() |
Modifier and Type | Method and Description |
---|---|
void |
checkInputSpecs(org.apache.hadoop.conf.Configuration conf)
Check that input is valid.
|
VertexReader<I,V,E> |
createVertexReader(org.apache.hadoop.mapreduce.InputSplit split,
org.apache.hadoop.mapreduce.TaskAttemptContext context)
Create a vertex reader for a given split.
|
List<org.apache.hadoop.mapreduce.InputSplit> |
getSplits(org.apache.hadoop.mapreduce.JobContext context,
int minSplitCountHint)
Get the list of input splits for the format.
|
readInputSplit, writeInputSplit
getConf, setConf
public void checkInputSpecs(org.apache.hadoop.conf.Configuration conf)
GiraphInputFormat
checkInputSpecs
in class GiraphInputFormat<I extends org.apache.hadoop.io.WritableComparable,V extends org.apache.hadoop.io.Writable,E extends org.apache.hadoop.io.Writable>
conf
- Configurationpublic List<org.apache.hadoop.mapreduce.InputSplit> getSplits(org.apache.hadoop.mapreduce.JobContext context, int minSplitCountHint) throws IOException, InterruptedException
GiraphInputFormat
getSplits
in class GiraphInputFormat<I extends org.apache.hadoop.io.WritableComparable,V extends org.apache.hadoop.io.Writable,E extends org.apache.hadoop.io.Writable>
context
- The job contextminSplitCountHint
- Minimum number of splits to create (hint)IOException
InterruptedException
public VertexReader<I,V,E> createVertexReader(org.apache.hadoop.mapreduce.InputSplit split, org.apache.hadoop.mapreduce.TaskAttemptContext context) throws IOException
VertexInputFormat
VertexReader.initialize(InputSplit, TaskAttemptContext)
before
the split is used.createVertexReader
in class VertexInputFormat<I extends org.apache.hadoop.io.WritableComparable,V extends org.apache.hadoop.io.Writable,E extends org.apache.hadoop.io.Writable>
split
- the split to be readcontext
- the information about the taskIOException
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