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From Pat Ferrel <pat.fer...@gmail.com>
Subject Re: SSVD error
Date Sat, 01 Sep 2012 15:09:37 GMT
Oh, sorry, below I meant to say k (the number to reduce to) not p.

In both cases p = 1, the first case k = 20, the second case k =100

Also the first error does seem to be running with local hadoop. The error is from looking
for a temp file that does exist in the file system, but not in the hadoop tmp based files.


On Sep 1, 2012, at 7:53 AM, Ted Dunning <ted.dunning@gmail.com> wrote:

With 57 crawled docs, you can't reasonably set p > 57.  That is your second
error.

On Sat, Sep 1, 2012 at 10:32 AM, Pat Ferrel <pat.ferrel@gmail.com> wrote:

> I have a small data set that I am using in local mode for debugging
> purposes. The data is 57 crawled docs with something like 2200 terms. I run
> this through seq2sparse, then my own cloned version of rowid to get a
> distributed row matrix, then into SSVD. I realize this is not a production
> environment, but you need to debug somewhere and single threaded execution
> is ideal for debugging. As I said this works in hadoop clustered mode.
> 
> The error looks like some code is expecting hdfs to be running, no? Here
> is the exception stack from the ide with p = 20:
> 
> 12/09/01 07:22:55 WARN mapred.LocalJobRunner: job_local_0002
> java.io.FileNotFoundException: File
> /tmp/hadoop-pat/mapred/local/archive/6590995089539988730_1587570556_37122331/file/Users/pat/Projects/big-data/b/ssvd/Q-job/R-m-00000
> does not exist.
>        at
> org.apache.hadoop.fs.RawLocalFileSystem.getFileStatus(RawLocalFileSystem.java:371)
>        at
> org.apache.hadoop.fs.FilterFileSystem.getFileStatus(FilterFileSystem.java:245)
>        at
> org.apache.mahout.common.iterator.sequencefile.SequenceFileDirValueIterator.<init>(SequenceFileDirValueIterator.java:92)
>        at
> org.apache.mahout.math.hadoop.stochasticsvd.BtJob$BtMapper.setup(BtJob.java:219)
>        at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:142)
>        at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:764)
>        at org.apache.hadoop.mapred.MapTask.run(MapTask.java:370)
>        at
> org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:212)
> Exception in thread "main" java.io.IOException: Bt job unsuccessful.
>        at
> org.apache.mahout.math.hadoop.stochasticsvd.BtJob.run(BtJob.java:609)
>        at
> org.apache.mahout.math.hadoop.stochasticsvd.SSVDSolver.run(SSVDSolver.java:397)
>        at
> com.finderbots.analysis.AnalysisPipeline.SSVDTransformAndBack(AnalysisPipeline.java:257)
>        at com.finderbots.analysis.AnalysisJob.run(AnalysisJob.java:20)
>        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
>        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:79)
> Disconnected from the target VM, address: '127.0.0.1:54588', transport:
> 'socket'
>        at com.finderbots.analysis.AnalysisJob.main(AnalysisJob.java:34)
> 
> Process finished with exit code 1
> 
> With p=100-200 I get the following:
> 
> 12/09/01 07:30:33 ERROR common.IOUtils: new m can't be less than n
> java.lang.IllegalArgumentException: new m can't be less than n
>        at
> org.apache.mahout.math.hadoop.stochasticsvd.qr.GivensThinSolver.adjust(GivensThinSolver.java:109)
>        at
> org.apache.mahout.math.hadoop.stochasticsvd.qr.QRFirstStep.cleanup(QRFirstStep.java:233)
>        at
> org.apache.mahout.math.hadoop.stochasticsvd.qr.QRFirstStep.close(QRFirstStep.java:89)
>        at org.apache.mahout.common.IOUtils.close(IOUtils.java:128)
>        at
> org.apache.mahout.math.hadoop.stochasticsvd.QJob$QMapper.cleanup(QJob.java:158)
>        at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:146)
>        at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:764)
>        at org.apache.hadoop.mapred.MapTask.run(MapTask.java:370)
>        at
> org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:212)
> 12/09/01 07:30:33 WARN mapred.LocalJobRunner: job_local_0001
> java.lang.IllegalArgumentException: new m can't be less than n
>        at
> org.apache.mahout.math.hadoop.stochasticsvd.qr.GivensThinSolver.adjust(GivensThinSolver.java:109)
>        at
> org.apache.mahout.math.hadoop.stochasticsvd.qr.QRFirstStep.cleanup(QRFirstStep.java:233)
>        at
> org.apache.mahout.math.hadoop.stochasticsvd.qr.QRFirstStep.close(QRFirstStep.java:89)
>        at org.apache.mahout.common.IOUtils.close(IOUtils.java:128)
>        at
> org.apache.mahout.math.hadoop.stochasticsvd.QJob$QMapper.cleanup(QJob.java:158)
>        at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:146)
>        at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:764)
>        at org.apache.hadoop.mapred.MapTask.run(MapTask.java:370)
>        at
> org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:212)
> Exception in thread "main" java.io.IOException: Q job unsuccessful.
>        at
> org.apache.mahout.math.hadoop.stochasticsvd.QJob.run(QJob.java:230)
>        at
> org.apache.mahout.math.hadoop.stochasticsvd.SSVDSolver.run(SSVDSolver.java:376)
>        at
> com.finderbots.analysis.AnalysisPipeline.SSVDTransformAndBack(AnalysisPipeline.java:257)
>        at com.finderbots.analysis.AnalysisJob.run(AnalysisJob.java:20)
>        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
>        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:79)
>        at com.finderbots.analysis.AnalysisJob.main(AnalysisJob.java:34)
> Disconnected from the target VM, address: '127.0.0.1:54614', transport:
> 'socket'
> 
> Process finished with exit code 1
> 
> 
> 
> 
> On Aug 31, 2012, at 4:21 PM, Dmitriy Lyubimov <dlieu.7@gmail.com> wrote:
> 
> Perhaps if you give more info about the stack etc. i might get a
> better idea though
> 
> On Fri, Aug 31, 2012 at 4:19 PM, Dmitriy Lyubimov <dlieu.7@gmail.com>
> wrote:
>> I am not sure, i haven't used it that way.
>> 
>> I know it works fully distributed AND when embedded with local job
>> tracker (e.g. its tests are basically MR jobs with "local" job
>> tracker) which probably is not the same as Mahout local mode.  "local"
>> job tracker is not good for much though: thus it doesn't use even
>> multicore parallelism as it doesn't support multiple reducers, so this
>> code is kind of for a real cluster really, pragmatically. There's also
>> Ted's implementation of non-distributed SSVD in Mahout which does not
>> require Hadoop dependencies but it is a different api with no PCA
>> option (not sure about power iterations).
>> 
>> I am not sure why this very particular error appears in your setup.
>> 
>> On Fri, Aug 31, 2012 at 3:02 PM, Pat Ferrel <pat.ferrel@gmail.com>
> wrote:
>>> Running on the local file system inside IDEA with MAHOUT_LOCAL set and
> performing an SSVD I get the error below. Notice that R-m-00000 exists in
> the local file system and running it outside the debugger in pseudo-cluster
> mode with HDFS works. Does SSVD work in local mode?
>>> 
>>> java.io.FileNotFoundException: File
> /tmp/hadoop-pat/mapred/local/archive/5543644668644532045_1587570556_2120541978/file/Users/pat/Projects/big-data/b/ssvd/Q-job/R-m-00000
> does not exist.
>>> 
>>> Maclaurin:big-data pat$ ls -al b/ssvd/Q-job/
>>> total 72
>>> drwxr-xr-x  10 pat  staff   340 Aug 31 13:35 .
>>> drwxr-xr-x   4 pat  staff   136 Aug 31 13:35 ..
>>> -rw-r--r--   1 pat  staff    80 Aug 31 13:35 .QHat-m-00000.crc
>>> -rw-r--r--   1 pat  staff    28 Aug 31 13:35 .R-m-00000.crc
>>> -rw-r--r--   1 pat  staff     8 Aug 31 13:35 ._SUCCESS.crc
>>> -rw-r--r--   1 pat  staff    12 Aug 31 13:35 .part-m-00000.deflate.crc
>>> -rwxrwxrwx   1 pat  staff  9154 Aug 31 13:35 QHat-m-00000
>>> -rwxrwxrwx   1 pat  staff  2061 Aug 31 13:35 R-m-00000
>>> -rwxrwxrwx   1 pat  staff     0 Aug 31 13:35 _SUCCESS
>>> -rwxrwxrwx   1 pat  staff     8 Aug 31 13:35 part-m-00000.deflate
>>> 
> 
> 


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