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https://issues.apache.org/jira/browse/GIRAPH-50?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Jakob Homan updated GIRAPH-50:
------------------------------

    Attachment: GIRAPH-50.patch

I ran into this again on a new machine, so I whipped up a quick patch.  Added 
text to README and site about Maven 3 requirement.  Also, added maven enforcer 
rule (thanks @sthuebner!) so the build will fail without Maven 3 with a 
reasonable message.  This is a better user experience than the failed tests 
without explanation otherwise.

Tried building against maven 2 and verified a good message was shown:
{noformat}[INFO] [enforcer:enforce {execution: enforce-maven}]
[WARNING] Rule 0: org.apache.maven.plugins.enforcer.RequireMavenVersion failed 
with message:
Detected Maven Version: 2.2.1 is not in the allowed range 3.0.0.{noformat}
                
> package/test failure with maven 2.2.1
> -------------------------------------
>
>                 Key: GIRAPH-50
>                 URL: https://issues.apache.org/jira/browse/GIRAPH-50
>             Project: Giraph
>          Issue Type: Bug
>         Environment: maven 2.2.1
>            Reporter: Mitul Tiwari
>            Priority: Minor
>         Attachments: GIRAPH-50.patch
>
>
> package/test works with maven 3.0.3, but package/test does not work with 
> maven 2.2.1. For example, the following command results in an error:
> $ /usr/bin/mvn221 -Dhadoop=non_secure package
> Last few lines of error:
>     Results :
>     Failed tests: 
>       testSuperstepBalancer(org.apache.giraph.TestVertexRangeBalancer)
>     testBspCheckpoint(org.apache.giraph.TestManualCheckpoint)
>     testBspSuperStep(org.apache.giraph.TestBspBasic)
>     testBspMsg(org.apache.giraph.TestBspBasic)
>     testBspCombiner(org.apache.giraph.TestBspBasic)
>     testBspPageRank(org.apache.giraph.TestBspBasic)
>     testBspShortestPaths(org.apache.giraph.TestBspBasic)
>     testMutateGraph(org.apache.giraph.TestMutateGraphVertex)
>     testContinue(org.apache.giraph.TestJsonBase64Format)
>   Tests run: 27, Failures: 9, Errors: 0, Skipped: 0
>   11/10/10 11:23:37 WARN zk.ZooKeeperManager: onlineZooKeeperServers: Forced 
> a shutdown hook kill of the ZooKeeper process.
>   11/10/10 11:23:37 WARN zk.ZooKeeperManager: onlineZooKeeperServers: Forced 
> a shutdown hook kill of the ZooKeeper process.
>   11/10/10 11:23:37 WARN zk.ZooKeeperManager: onlineZooKeeperServers: Forced 
> a shutdown hook kill of the ZooKeeper process.
>   11/10/10 11:23:37 WARN zk.ZooKeeperManager: onlineZooKeeperServers: Forced 
> a shutdown hook kill of the ZooKeeper process.
>   11/10/10 11:23:37 WARN zk.ZooKeeperManager: onlineZooKeeperServers: Forced 
> a shutdown hook kill of the ZooKeeper process.
>   11/10/10 11:23:37 WARN zk.ZooKeeperManager: onlineZooKeeperServers: Forced 
> a shutdown hook kill of the ZooKeeper process.
>   11/10/10 11:23:37 WARN zk.ZooKeeperManager: onlineZooKeeperServers: Forced 
> a shutdown hook kill of the ZooKeeper process.
>   11/10/10 11:23:37 WARN zk.ZooKeeperManager: onlineZooKeeperServers: Forced 
> a shutdown hook kill of the ZooKeeper process.
>   11/10/10 11:23:37 WARN zk.ZooKeeperManager: onlineZooKeeperServers: Forced 
> a shutdown hook kill of the ZooKeeper process.
>   11/10/10 11:23:37 WARN zk.ZooKeeperManager: onlineZooKeeperServers: Forced 
> a shutdown hook kill of the ZooKeeper process.
>   [INFO] 
> ------------------------------------------------------------------------
>   [ERROR] BUILD FAILURE
>   [INFO] 
> ------------------------------------------------------------------------
>   [INFO] There are test failures.
>   Please refer to 
> /Users/mtiwari/pkgs/giraph/Apache/giraph/target/surefire-reports for the 
> individual test results.
>   [INFO] 
> ------------------------------------------------------------------------
>   [INFO] For more information, run Maven with the -e switch
>   [INFO] 
> ------------------------------------------------------------------------
>   [INFO] Total time: 23 seconds
>   [INFO] Finished at: Mon Oct 10 11:23:37 PDT 2011
>   [INFO] Final Memory: 51M/106M
>   [INFO] 
> ------------------------------------------------------------------------

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