Thanks a lot Avery for your response. I am now using
VertexInputFormatDescription, but still could not figure out how to set the
Vertex input path. I just need to read the vertex values from two different
files, each with its own format. I am not using any EdgeInputFormatClass.
Can you please take a look at my code below and show me how to set the
Vertex Input Path? Thanks
if (null == getConf()) {
conf = new Configuration();
}
GiraphConfiguration gconf = new GiraphConfiguration(getConf());
int workers = Integer.parseInt(arg0[2]);
gconf.setWorkerConfiguration(workers, workers, 100.0f);
List vertexInputDescriptions =
Lists.newArrayList();
// Input one
VertexInputFormatDescription description1 = new
VertexInputFormatDescription(UseCase1FirstVertexInputFormat.class);
// how to set the vertex input path?
vertexInputDescriptions.add(description1);
// Input two
VertexInputFormatDescription description2 = new
VertexInputFormatDescription(UseCase1SecondVertexInputFormat.class);
// how to set the vertex input path?
vertexInputDescriptions.add(description2);
VertexInputFormatDescription.VERTEX_INPUT_FORMAT_DESCRIPTIONS.set(gconf,InputFormatDescription.toJsonString(vertexInputDescriptions));
gconf.setVertexOutputFormatClass(UseCase1OutputFormat.class);
gconf.setComputationClass(UseCase1Vertex.class);
GiraphJob job = new GiraphJob(gconf, "Use Case 1");
FileOutputFormat.setOutputPath(job.getInternalJob(), new
Path(arg0[1]));
return job.run(true) ? 0 : -1;
Best,
Yasser
From: Avery Ching [mailto:ach...@apache.org]
Sent: Friday, August 16, 2013 9:50 AM
To: user@giraph.apache.org
Subject: Re: MultiVertexInputFormat
This is doable in Giraph, you can use as many vertex or edge input formats as
you like (via GIRAPH-639). You just need to choose MultiVertexInputFormat
and/or MultiEdgeInputFromat
See VertexInputFormatDescription for vertex input formats
/**
* VertexInputFormats description - JSON array containing a JSON array for
* each vertex input. Vertex input JSON arrays contain one or two elements -
* first one is the name of vertex input class, and second one is JSON object
* with all specific parameters for this vertex input. For example:
* [["VIF1",{"p":"v1"}],["VIF2",{"p":"v2","q":"v"}]]
*/
public static final StrConfOption VERTEX_INPUT_FORMAT_DESCRIPTIONS =
new StrConfOption("giraph.multiVertexInput.descriptions", null,
"VertexInputFormats description - JSON array containing a JSON " +
"array for each vertex input. Vertex input JSON arrays contain " +
"one or two elements - first one is the name of vertex input " +
"class, and second one is JSON object with all specific parameters " +
"for this vertex input. For example: [[\"VIF1\",{\"p\":\"v1\"}]," +
"[\"VIF2\",{\"p\":\"v2\",\"q\":\"v\"}]]\"");
See EdgeInputFormatDescription for edge input formats
/**
* EdgeInputFormats description - JSON array containing a JSON array for
* each edge input. Edge input JSON arrays contain one or two elements -
* first one is the name of edge input class, and second one is JSON object
* with all specific parameters for this edge input. For example:
* [["EIF1",{"p":"v1"}],["EIF2",{"p":"v2","q":"v"}]]
*/
public static final StrConfOption EDGE_INPUT_FORMAT_DESCRIPTIONS =
new StrConfOption("giraph.multiEdgeInput.descriptions", null,
"EdgeInputFormats description - JSON array containing a JSON array " +
"for each edge input. Edge input JSON arrays contain one or two " +
"elements - first one is the name of edge input class, and second " +
"one is JSON object with all specific parameters for this edge " +
"input. For example: [[\"EIF1\",{\"p\":\"v1\"}]," +
"[\"EIF2\",{\"p\":\"v2\",\"q\":\"v\"}]]");
Hope that helps,
Avery
On 8/16/13 8:45 AM, Yasser Altowim wrote:
Guys, any help with this will be appreciated. Thanks.
From: Yasser Altowim [mailto:yasser.alto...@ericsson.com]
Sent: Thursday, August 15, 2013 2:07 PM
To: user@giraph.apache.org
Subject: MultiVertexInputFormat
Hi,
I am implementing an algorithm using Giraph. My algorithm needs
to read input data from two files, each has its own format. My questions are:
1. How can I use the MultiVertexInputFormat class? Is there any example
that shows how this class can be used?
2. How can I specify this class when running my job using the Giraph
Runner or using a driver class?
Thanks in advance.
Best,
Yasser
