[HAMA-443] SSSP doesn't works with multi-tasks

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.3.0
• Fix Version/s: 0.4.0
• Component/s: examples
• Assignee: Edward J. Yoon
• Reporter: Edward J. Yoon
• Created: 26/Sep/11 00:50
• Updated: 02/May/13 02:29
• Resolved: 12/Dec/11 09:44

Description

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)

Issue Links

• depends upon: HAMA-258 Design a input and output system
• is blocked by: HAMA-471 Peer names should be sorted by task id

Sub-Tasks

• Add unit test for SSSP algorithm: Resolved