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https://issues.apache.org/jira/browse/HDFS-3073?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Colin Patrick McCabe updated HDFS-3073:
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Attachment: HDFS-3073.002.patch
* refactor getLeaf a bit
* the exception getLeaf() throws for an invalid Node now includes the offending
Node as a string, and a helpful error message.
> NetworkTopology::getLeaf should check for invalid topologies
> ------------------------------------------------------------
>
> Key: HDFS-3073
> URL: https://issues.apache.org/jira/browse/HDFS-3073
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 1.0.0
> Reporter: Colin Patrick McCabe
> Assignee: Colin Patrick McCabe
> Attachments: HDFS-3073.002.patch
>
>
> Currently, NetworkTopology::getLeaf doesn't do too much validation on the
> NetworkTopology object itself. This results in us getting ClassCastException
> sometimes when the topology is invalid. We should have a less confusing
> exception message for this case.
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