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https://issues.apache.org/jira/browse/HAMA-443?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13167372#comment-13167372
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Thomas Jungblut commented on HAMA-443:
--------------------------------------
Looks like a binary search problem in this case.
> SSSP doesn't works with multi-tasks
> -----------------------------------
>
> Key: HAMA-443
> URL: https://issues.apache.org/jira/browse/HAMA-443
> Project: Hama
> Issue Type: Bug
> Components: examples
> Affects Versions: 0.3.0
> Reporter: Edward J. Yoon
> Assignee: Edward J. Yoon
> Fix For: 0.4.0
>
> Attachments: HAMA-443.patch, HAMA-443_1.patch, HAMA-443_v2.patch,
> HAMA-443_v3.patch, HAMA-443_v4.patch, HAMA-443_v5.patch, mapToList.patch,
> patch.txt, refactor.patch, test.patch, test2.patch
>
>
> {code}
> root@Cnode1:/usr/local/src/hama-trunk# core/bin/hama jar
> examples/target/hama-examples-0.4.0-incubating-SNAPSHOT.jar sssp Klewno xx
> /user/root/edward/sssp-adjacencylist.txt
> Single Source Shortest Path Example:
> <Startvertex name> <optional: output path> <optional: path to own adjacency
> list textfile!>
> Setting default start vertex to "Frankfurt"!
> Setting start vertex to Klewno!
> Using new output folder: xx
> 11/09/26 09:46:24 INFO graph.ShortestPaths: Starting data partitioning...
> 11/09/26 09:47:12 INFO graph.ShortestPaths: Finished!
> 11/09/26 09:47:12 INFO bsp.BSPJobClient: Running job: job_201109260929_0004
> 11/09/26 09:47:15 INFO bsp.BSPJobClient: Current supersteps number: 0
> 11/09/26 09:47:21 INFO bsp.BSPJobClient: Current supersteps number: 1
> 11/09/26 09:47:33 INFO bsp.BSPJobClient: The total number of supersteps: 1
> Job Finished in 21.553 seconds
> -------------------- RESULTS --------------------
> java.lang.NullPointerException
> at
> org.apache.hama.examples.graph.ShortestPathsBase.printOutput(ShortestPathsBase.java:93)
> at
> org.apache.hama.examples.graph.ShortestPaths.main(ShortestPaths.java:239)
> 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.ProgramDriver$ProgramDescription.invoke(ProgramDriver.java:68)
> at org.apache.hadoop.util.ProgramDriver.driver(ProgramDriver.java:139)
> at org.apache.hama.examples.ExampleDriver.main(ExampleDriver.java:37)
> 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.hama.util.RunJar.main(RunJar.java:145)
> {code}
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