I wonder the approximate time table for hama 0.1 release and will hama 0.1
support the follow matrix operations ?
1) matrix transposition
2) find eigenvalues and eigenvectors
3) matrix singular value decomposition
Best Wishes!
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From: "Samuel Guo" <[EMAIL PROTECTED]>
Sent: Friday, October 24, 2008 11:52 AM
To: <[email protected]>
Subject: Re: Help, failed running hama matrix addition examples, thanks!
On Fri, Oct 24, 2008 at 11:49 AM, zhuguanyin <[EMAIL PROTECTED]> wrote:
I add hbase-default.xml, hbase-site.xml, hama-site.xml to cluster's
hadoop/conf dir, the matrix addition example run successful!
I suggest "add hbase-default.xml, hbase-site.xml, hama-site.xml to
cluster's hadoop/conf dir" to GettingStarted.
Thank you for your suggestion.
I will add this suggestion to the wiki page. :-)
thanks!
--------------------------------------------------
From: "Samuel Guo" <[EMAIL PROTECTED]>
Sent: Thursday, October 23, 2008 2:20 PM
To: <[email protected]>
Subject: Re: Help, failed running hama matrix addition examples, thanks!
you can check this wiki
http://wiki.apache.org/hama/GettingStarted
On Thu, Oct 23, 2008 at 1:42 PM, zhuguanyin <[EMAIL PROTECTED]>
wrote:
> hi, I'm a newbie for hama, I set up a hadoop/hbase cluster, and the >
hama
> environment, but I couldn't run the examples successfull.
>
> 1) I don't know how to set the hama-site.xml, if there is a
> hama-default.xml, it would be very helpful.
> here is my hama-site.xml:
>
A good suggestion.
Now in hama, a quick way is dealing with conf/hama-env.sh.
let $HADOOP_CONF_DIR point to your hadoop cluster's configuration.
let $HBASE_CONF_DIR point to your hadoop cluster's configuration.
can you try it again and let us know.
> <configuration>
>
> <property>
> <name>mapred.jar</name>
> <value>/home/zhugy/hama/hama-trunk/hama-0.1.0-dev.jar</value>
> </property>
>
> <property>
> <name>hbase.rootdir</name>
> <value>hdfs://jx-hadoop-data08.jx:52310/hbase-v1</value>
> <description>The directory shared by region servers.
> Should be fully-qualified to include the filesystem to use.
> E.g: hdfs://NAMENODE_SERVER:PORT/HBASE_ROOTDIR
> </description>
> </property>
>
> <property>
> <name>hbase.master</name>
> <value>jx-hadoop-data08.jx:62310</value>
> <description>The host and port that the HBase master runs at.
> A value of 'local' runs the master and a regionserver in
> a single process.
> </description>
> </property>
> </configuration>
>
>
> 2) When I test the matrix addition examples:
> hama/hama-trunk/bin/hama examples addition -m 2 -r 1 2 2
>
>
> I get the follow stderr on map-reduce's stderr on task:
>
> java.lang.NullPointerException
> at >
org.apache.hama.HamaAdminImpl.initialJob(HamaAdminImpl.java:51)
> at org.apache.hama.HamaAdminImpl.<init>(HamaAdminImpl.java:46)
> at
org.apache.hama.AbstractMatrix.setConfiguration(AbstractMatrix.java:62)
> at org.apache.hama.DenseMatrix.<init>(DenseMatrix.java:66)
> at
org.apache.hama.algebra.Add1DLayoutMap.configure(Add1DLayoutMap.java:43)
> at
org.apache.hadoop.util.ReflectionUtils.setConf(ReflectionUtils.java:58)
> at
org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:82)
> at >
org.apache.hadoop.mapred.MapRunner.configure(MapRunner.java:33)
> at
org.apache.hadoop.util.ReflectionUtils.setConf(ReflectionUtils.java:58)
> at
org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:82)
> at org.apache.hadoop.mapred.MapTask.run(MapTask.java:223)
> at
org.apache.hadoop.mapred.TaskTracker$Child.main(TaskTracker.java:2207)
> java.lang.NullPointerException
> at
org.apache.hama.HamaAdminImpl.matrixExists(HamaAdminImpl.java:79)
> at org.apache.hama.DenseMatrix.<init>(DenseMatrix.java:68)
> at
org.apache.hama.algebra.Add1DLayoutMap.configure(Add1DLayoutMap.java:43)
> at
org.apache.hadoop.util.ReflectionUtils.setConf(ReflectionUtils.java:58)
> at
org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:82)
> at >
org.apache.hadoop.mapred.MapRunner.configure(MapRunner.java:33)
> at
org.apache.hadoop.util.ReflectionUtils.setConf(ReflectionUtils.java:58)
> at
org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:82)
> at org.apache.hadoop.mapred.MapTask.run(MapTask.java:223)
> at
org.apache.hadoop.mapred.TaskTracker$Child.main(TaskTracker.java:2207)
>
>
>
> thanks!
>
>
> <http://blog.udanax.org>
