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https://issues.apache.org/jira/browse/GIRAPH-884?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13956702#comment-13956702
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Pavan Kumar commented on GIRAPH-884:
------------------------------------
Just curious, I wrote this simple program
public static void main(String[] args) {
new ByteArrayInputStream(null, 0, 0);
}
It throws a NPE at line
this.count = Math.min(offset + length, buf.length);
while is 126.
How come your log shows 120. But sure, this is a bug.
Thanks for fixing it.
+1 from me
> ByteArrayEdges.iterator() throws NPE when no edges are present
> --------------------------------------------------------------
>
> Key: GIRAPH-884
> URL: https://issues.apache.org/jira/browse/GIRAPH-884
> Project: Giraph
> Issue Type: Bug
> Reporter: Craig Muchinsky
> Fix For: 1.1.0
>
> Attachments: GIRAPH-884.patch
>
>
> The ByteArrayEdges.iterator() method throws the following NPE when no edges
> are present:
> 2014-03-31 14:44:46,273 ERROR org.apache.giraph.utils.LogStacktraceCallable:
> Execution of callable failed
> java.lang.NullPointerException
> at java.io.ByteArrayInputStream.<init>(ByteArrayInputStream.java:120)
> at
> org.apache.giraph.utils.ExtendedByteArrayDataInput.<init>(ExtendedByteArrayDataInput.java:50)
> at
> org.apache.giraph.conf.ImmutableClassesGiraphConfiguration.createExtendedDataInput(ImmutableClassesGiraphConfiguration.java:1009)
> at
> org.apache.giraph.edge.ByteArrayEdges$ByteArrayEdgeIterator.<init>(ByteArrayEdges.java:141)
> at
> org.apache.giraph.edge.ByteArrayEdges$ByteArrayEdgeIterator.<init>(ByteArrayEdges.java:138)
> at
> org.apache.giraph.edge.ByteArrayEdges.iterator(ByteArrayEdges.java:167)
> Simply checking the edgeCount before constructing a new ByteArrayEdgeIterator
> solves the problem.
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