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From "Craig Muchinsky (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (GIRAPH-884) ByteArrayEdges.iterator() throws NPE when no edges are present
Date Mon, 31 Mar 2014 19:26:15 GMT

     [ https://issues.apache.org/jira/browse/GIRAPH-884?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Craig Muchinsky updated GIRAPH-884:
-----------------------------------

    Attachment: GIRAPH-884.patch

> 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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