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From "Maja Kabiljo (JIRA)" <j...@apache.org>
Subject [jira] [Created] (GIRAPH-853) Fix concurrency issue in GiraphMetrics
Date Fri, 14 Feb 2014 16:54:21 GMT
Maja Kabiljo created GIRAPH-853:
-----------------------------------

             Summary: Fix concurrency issue in GiraphMetrics
                 Key: GIRAPH-853
                 URL: https://issues.apache.org/jira/browse/GIRAPH-853
             Project: Giraph
          Issue Type: Bug
            Reporter: Maja Kabiljo
            Assignee: Maja Kabiljo


Tests sometimes fail due to concurrency issue in GiraphMetrics when adding observers

Caused by: java.util.ConcurrentModificationException
	at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:819)
	at java.util.ArrayList$Itr.next(ArrayList.java:791)
	at org.apache.giraph.metrics.GiraphMetrics.resetSuperstepMetrics(GiraphMetrics.java:134)
	at org.apache.giraph.graph.GraphTaskManager.checkTaskState(GraphTaskManager.java:829) ...



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