[
https://issues.apache.org/jira/browse/GIRAPH-1187?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17185954#comment-17185954
]
Dionysios Logothetis commented on GIRAPH-1187:
----------------------------------------------
[~ruweih], you're right. Then your solution seems ok to me. Feel free to submit
a PR.
> NPE in worker GC listener
> --------------------------
>
> Key: GIRAPH-1187
> URL: https://issues.apache.org/jira/browse/GIRAPH-1187
> Project: Giraph
> Issue Type: Bug
> Components: graph
> Affects Versions: 1.2.0
> Environment: Giraph 1.2.0 running in M/R on Hadoop 2.6
> Reporter: Randy Hu
> Priority: Critical
>
> Likely the GC notification happened before any super step, in which case "
> gcTimeMetric" is not initialized at all. Here is stack trace:
>
> java.lang.NullPointerException at
> org.apache.giraph.graph.GraphTaskManager$1.handleNotification(GraphTaskManager.java:667)
> at
> sun.management.NotificationEmitterSupport.sendNotification(NotificationEmitterSupport.java:156)
> at
> sun.management.GarbageCollectorImpl.createGCNotification(GarbageCollectorImpl.java:143)
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
