Hi,
1. It have to work if you set giraph.vertexKeySpaceSize just after or
before the other property. But it can interfere with the other command
line options :(.
2. Its Number of Vertexes in your graph.
Regards,
Lukas
On 2.4.2014 17:21, Liannet Reyes wrote:
Thank you very much Lukas,
I've notice that using SimpleLongRangePartitionerFactory require the
GiraphConstant giraph.vertexKeySpaceSize to be set,
but I have 2 questions:
1- Where should I set the giraph constant values? I've tried using
-Dgiraph.vertexKeySpaceSize=256 after
-Dgiraph.graphPartitionerFactoryClass but it didn't work
2- Which unit is this PARTITION_VERTEX_KEY_SPACE_SIZE? Bytes??
Regards,
Liannet
2014-04-01 20:55 GMT+02:00 Lukas Nalezenec
<lukas.naleze...@firma.seznam.cz
<mailto:lukas.naleze...@firma.seznam.cz>>:
Hi,
Partition is for storing vertexes, Partitioner is for distributing
vertexes between Partitions.
Try this:
-Dgiraph.graphPartitionerFactoryClass=org.apache.giraph.partition.SimpleLongRangePartitionerFactory
Its good idea to switch Partition to ByteArrayPartition (or better).
Lukas
On 1.4.2014 19:59, Liannet Reyes wrote:
Hi all,
I´m trying to use the giraph partition class to improve my graph
distribution, however I hardly found info on how to use it.
I´m testing the SimpleShortestPathsComputation example with the
tiny_graph.txt input file and the
SimpleLongRangePartitionerFactory out-of-the-box in
org.apache.giraph.partition but without success. Apparentely I
need a Partition class and the SimpleLongRangePartitionerFactory
is not.
Can you kindly please let me know the proper way to do it? See
below my command and console output
hadoop jar
$GIRAPH_HOME/giraph-examples/target/giraph-examples-1.1.0-SNAPSHOT-for-hadoop-1.2.1-jar-with-dependencies.jar
org.apache.giraph.GiraphRunner
org.apache.giraph.examples.SimpleShortestPathsComputation -vif
org.apache.giraph.io.formats.JsonLongDoubleFloatDoubleVertexInputFormat
-vip /user/hduser/input/tiny_graph.txt -vof
org.apache.giraph.io.formats.IdWithValueTextOutputFormat -op
/user/hduser/output/shortestpaths-pc
org.apache.giraph.partition.SimpleLongRangePartitionerFactory -w 2
Exception in thread "main" java.lang.RuntimeException: class
org.apache.giraph.partition.SimpleLongRangePartitionerFactory not
org.apache.giraph.partition.Partition
at
org.apache.hadoop.conf.Configuration.setClass(Configuration.java:915)
at
org.apache.giraph.conf.ClassConfOption.set(ClassConfOption.java:182)
at
org.apache.giraph.conf.GiraphConfiguration.setPartitionClass(GiraphConfiguration.java:594)
at
org.apache.giraph.utils.ConfigurationUtils.populateGiraphConfiguration(ConfigurationUtils.java:375)
at
org.apache.giraph.utils.ConfigurationUtils.parseArgs(ConfigurationUtils.java:207)
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)
Thanks in advance
Liannet
