Avery Ching created GIRAPH-492:
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             Summary: Saving vertices has no status report, making it hard to 
find DFS issues
                 Key: GIRAPH-492
                 URL: https://issues.apache.org/jira/browse/GIRAPH-492
             Project: Giraph
          Issue Type: Bug
            Reporter: Avery Ching
            Assignee: Avery Ching


Adds status updates to saving of the vertices and improve the overall logic of 
when to print status of loading/storing the graph (every 250k vertices or 15 
secs).  This will help us to see which are the slow workers when saving output. 
 This updates the Hadoop status messages as well as prints to the task log.  I 
also made this consistent for the loading.

Task log messages look like the following:

org.apache.giraph.worker.BspServiceWorker  - saveVertices: Saved 598753 out of 
1000000 vertices, on partition 14 out of 24
INFO    2013-01-29 12:54:02,072 [main] 
org.apache.giraph.worker.BspServiceWorker  - saveVertices: Saved 848754 out of 
1000000 vertices, on partition 20 out of 24


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