What types does the vertex class that you use in your computation require?
On 02/03/2014 05:28 PM, Alexander Frolov wrote:
On Mon, Feb 3, 2014 at 8:20 PM, Sebastian Schelter <[email protected]> wrote:
Hi Alexander,
what do you use as type for your vertex ids? It looks that you are trying
to use longs, while IntIntNullTextInputFormat only provides ints, that
could be the error.
--sebastian
I also thought so, but I could not understand why it regard it as long.
I just use -vif org.apache.giraph.io.formats.IntIntNullTextInputFormat
-vip /user/hduser/input/test -vof
and file consists only of two lines:
[hduser@localhost ~]$ $HADOOP_HOME/bin/hadoop dfs -cat
/user/hduser/input/test
0 1
1 0
I dont know any other means to specify type of vertex ids.
On 02/03/2014 05:06 PM, Alexander Frolov wrote:
Hello,
I am trying to load data in from file in IntIntNullTextInputFormat. But I
get is the following message:
[hduser@localhost ~]$ $HADOOP_HOME/bin/hadoop jar
$GIRAPH_HOME/giraph-examples/target/giraph-examples-1.1.0-
SNAPSHOT-for-hadoop-0.20.203.0-jar-with-dependencies.jar
org.apache.giraph.GiraphRunner
org.apache.giraph.examples.SimpleShortestPathsComputation -vif
org.apache.giraph.io.formats.IntIntNullTextInputFormat -vip
/user/hduser/input/test -vof
org.apache.giraph.io.formats.IdWithValueTextOutputFormat -op
/user/hduser/output/amazon-shortestpaths -w 1
14/02/03 19:46:08 INFO utils.ConfigurationUtils: No edge input format
specified. Ensure your InputFormat does not require one.
14/02/03 19:46:08 INFO utils.ConfigurationUtils: No edge output format
specified. Ensure your OutputFormat does not require one.
Exception in thread "main" java.lang.IllegalArgumentException:
checkClassTypes: vertex index types not assignable, computation - class
org.apache.hadoop.io.LongWritable, VertexInputFormat - class
org.apache.hadoop.io.IntWritable
at
org.apache.giraph.job.GiraphConfigurationValidator.checkAssignable(
GiraphConfigurationValidator.java:381)
at
org.apache.giraph.job.GiraphConfigurationValidator.
verifyVertexInputFormatGenericTypes(GiraphConfigurationValidator.
java:226)
at
org.apache.giraph.job.GiraphConfigurationValidator.validateConfiguration(
GiraphConfigurationValidator.java:141)
at
org.apache.giraph.utils.ConfigurationUtils.parseArgs(
ConfigurationUtils.java:214)
at org.apache.giraph.GiraphRunner.run(GiraphRunner.java:74)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:79)
at org.apache.giraph.GiraphRunner.main(GiraphRunner.java:124)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(
NativeMethodAccessorImpl.java:57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(
DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.apache.hadoop.util.RunJar.main(RunJar.java:156)
The input file is here (just for testing):
[hduser@localhost ~]$ $HADOOP_HOME/bin/hadoop dfs -cat
/user/hduser/input/test
0 1
1 0
Could you please help with this issue?
Best,
Alex
