org.apache.giraph.io.hbase.edgemarker

Class TableEdgeInputFormat.TableEdgeVertexReader

java.lang.Object

org.apache.giraph.conf.DefaultImmutableClassesGiraphConfigurable<I,V,E>

org.apache.giraph.worker.WorkerAggregatorDelegator<I,V,E>

org.apache.giraph.io.VertexReader<I,V,E>

org.apache.giraph.io.hbase.HBaseVertexInputFormat.HBaseVertexReader<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text,org.apache.hadoop.io.Text>

org.apache.giraph.io.hbase.edgemarker.TableEdgeInputFormat.TableEdgeVertexReader

All Implemented Interfaces:

AggregatorUsage, GiraphConfigurationSettable<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text,org.apache.hadoop.io.Text>, ImmutableClassesGiraphConfigurable<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text,org.apache.hadoop.io.Text>, WorkerAggregatorUsage, WorkerBroadcastUsage, WorkerGlobalCommUsage, WorkerReduceUsage

Enclosing class:

TableEdgeInputFormat

public static class TableEdgeInputFormat.TableEdgeVertexReader
extends HBaseVertexInputFormat.HBaseVertexReader<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text,org.apache.hadoop.io.Text>

Uses the RecordReader to return Hbase rows

Constructor Summary

Constructors

Constructor and Description
TableEdgeVertexReader(org.apache.hadoop.mapreduce.InputSplit split, org.apache.hadoop.mapreduce.TaskAttemptContext context)

Method Summary

Modifier and Type	Method and Description
Vertex<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text,org.apache.hadoop.io.Text>	getCurrentVertex() For each row, create a vertex with the row ID as a text, and it's 'children' qualifier as a single edge.
boolean	nextVertex()

Methods inherited from class org.apache.giraph.io.hbase.HBaseVertexInputFormat.HBaseVertexReader

close, getContext, getProgress, getRecordReader, initialize

Methods inherited from class org.apache.giraph.worker.WorkerAggregatorDelegator

aggregate, getAggregatedValue, getBroadcast, reduce, reduceMerge, setWorkerGlobalCommUsage

Methods inherited from class org.apache.giraph.conf.DefaultImmutableClassesGiraphConfigurable

getConf, setConf

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

TableEdgeVertexReader

public TableEdgeVertexReader(org.apache.hadoop.mapreduce.InputSplit split,
                             org.apache.hadoop.mapreduce.TaskAttemptContext context)
                      throws IOException

Throws:

IOException

Method Detail

nextVertex

public boolean nextVertex()
                   throws IOException,
                          InterruptedException

Specified by:

nextVertex in class VertexReader<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text,org.apache.hadoop.io.Text>

Throws:

IOException

InterruptedException

getCurrentVertex

public Vertex<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text,org.apache.hadoop.io.Text> getCurrentVertex()
                                                                                                       throws IOException,
                                                                                                              InterruptedException

For each row, create a vertex with the row ID as a text, and it's 'children' qualifier as a single edge.

Specified by:

getCurrentVertex in class VertexReader<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text,org.apache.hadoop.io.Text>

Throws:

IOException

InterruptedException