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Posted to dev@mahout.apache.org by "Sabin Thomas (JIRA)" <ji...@apache.org> on 2014/10/26 21:17:33 UTC
[jira] [Comment Edited] (MAHOUT-1590) mahout unit test failures due
to guava version conflict on hadoop 2
[ https://issues.apache.org/jira/browse/MAHOUT-1590?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14184659#comment-14184659 ]
Sabin Thomas edited comment on MAHOUT-1590 at 10/26/14 8:16 PM:
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I am confirming that downgrading the guava library to v14 resolves this issue.
was (Author: paged.fault):
I am verifying that downgrading the guava library to v14 resolves this issue.
> mahout unit test failures due to guava version conflict on hadoop 2
> -------------------------------------------------------------------
>
> Key: MAHOUT-1590
> URL: https://issues.apache.org/jira/browse/MAHOUT-1590
> Project: Mahout
> Issue Type: Bug
> Affects Versions: 1.0
> Environment: Hadoop 2.x
> Reporter: Venkat Ranganathan
> Fix For: 1.0
>
> Attachments: MAHOUT-1590.patch
>
>
> Running
> mvn clean test -Dhadoop2.version=2.4.0
> has many unit test failures because guava version mismatch.
> For example:
> ======
> completeJobToyExample(org.apache.mahout.cf.taste.hadoop.als.ParallelALSFactorizationJobTest) Time elapsed: 0.736 sec <<< ERROR!
> java.lang.NoSuchMethodError: com.google.common.base.Stopwatch.elapsedMillis()J
> at __randomizedtesting.SeedInfo.seed([BEBBF9ACD237F984:B570D1523391FD4E]:0)
> at org.apache.hadoop.mapreduce.lib.input.FileInputFormat.listStatus(FileInputFormat.java:278)
> at org.apache.hadoop.mapreduce.lib.input.FileInputFormat.getSplits(FileInputFormat.java:375)
> at org.apache.hadoop.mapreduce.JobSubmitter.writeNewSplits(JobSubmitter.java:493)
> at org.apache.hadoop.mapreduce.JobSubmitter.writeSplits(JobSubmitter.java:510)
> at org.apache.hadoop.mapreduce.JobSubmitter.submitJobInternal(JobSubmitter.java:394)
> at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1285)
> at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1282)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:396)
> at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1548)
> at org.apache.hadoop.mapreduce.Job.submit(Job.java:1282)
> at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:1303)
> at org.apache.mahout.cf.taste.hadoop.als.ParallelALSFactorizationJob.run(ParallelALSFactorizationJob.java:172)
> at org.apache.mahout.cf.taste.hadoop.als.ParallelALSFactorizationJobTest.explicitExample(ParallelALSFactorizationJobTest.java:112)
> at org.apache.mahout.cf.taste.hadoop.als.ParallelALSFactorizationJobTest.completeJobToyExample(ParallelALSFactorizationJobTest.java:71)
> =====
> hadoop mapreduce V2 is using guava v11.0.2 and mahout is using guava version 16.0
> After trying different versions guava version 14.0 seems to have hadoop MR V2 compatible jars and mahout needed classes.
> The unit tests ran successfully after changing the dependency in mahout to v14.0
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