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Posted to dev@mahout.apache.org by "Dmitriy Lyubimov (JIRA)" <ji...@apache.org> on 2011/08/14 20:48:27 UTC
[jira] [Updated] (MAHOUT-786) SSVD+CDH3u0: Upper Triangular matrix
overrun reported by front end
[ https://issues.apache.org/jira/browse/MAHOUT-786?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Dmitriy Lyubimov updated MAHOUT-786:
------------------------------------
Description:
SSVD error When running with cdh3u0 and reduceTasks >1 :
{code}
Exception in thread "main" java.io.IOException: Unexpected overrun in upper triangular matrix files
at org.apache.mahout.math.hadoop.stochasticsvd.SSVDSolver.loadUpperTriangularMatrix(SSVDSolver.java:471)
at org.apache.mahout.math.hadoop.stochasticsvd.SSVDSolver.run(SSVDSolver.java:268)
at com.mozilla.SSVDCli.run(SSVDCli.java:89)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:79)
at com.mozilla.SSVDCli.main(SSVDCli.java:129)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.hadoop.util.RunJar.main(RunJar.java:186)
{code}
I suspect that would always be the case starting with cdh3b3.
> SSVD+CDH3u0: Upper Triangular matrix overrun reported by front end
> ------------------------------------------------------------------
>
> Key: MAHOUT-786
> URL: https://issues.apache.org/jira/browse/MAHOUT-786
> Project: Mahout
> Issue Type: Bug
> Reporter: Dmitriy Lyubimov
> Assignee: Dmitriy Lyubimov
> Fix For: 0.6
>
>
> SSVD error When running with cdh3u0 and reduceTasks >1 :
> {code}
> Exception in thread "main" java.io.IOException: Unexpected overrun in upper triangular matrix files
> at org.apache.mahout.math.hadoop.stochasticsvd.SSVDSolver.loadUpperTriangularMatrix(SSVDSolver.java:471)
> at org.apache.mahout.math.hadoop.stochasticsvd.SSVDSolver.run(SSVDSolver.java:268)
> at com.mozilla.SSVDCli.run(SSVDCli.java:89)
> at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
> at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:79)
> at com.mozilla.SSVDCli.main(SSVDCli.java:129)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at org.apache.hadoop.util.RunJar.main(RunJar.java:186)
> {code}
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