[
https://issues.apache.org/jira/browse/PIG-2730?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Travis Crawford updated PIG-2730:
---------------------------------
Attachment: PIG-2730.1.patch
> TFileStorage getStatistics incorrectly throws an exception instead of
> returning null
> ------------------------------------------------------------------------------------
>
> Key: PIG-2730
> URL: https://issues.apache.org/jira/browse/PIG-2730
> Project: Pig
> Issue Type: Bug
> Reporter: Travis Crawford
> Assignee: Travis Crawford
> Attachments: PIG-2730.1.patch
>
>
> [TFileStorage.java|http://svn.apache.org/repos/asf/pig/trunk/src/org/apache/pig/impl/io/TFileStorage.java]
> throws an exception in getStatistics:
> {code}
> @Override
> public ResourceStatistics getStatistics(String location, Job job) throws
> IOException {
> throw new UnsupportedOperationException();
> }
> {code}
> However the interface for
> [LoadMetadata.java|http://svn.apache.org/repos/asf/pig/trunk/src/org/apache/pig/LoadMetadata.java]
> states null should be returned if statistics are not available:
> {code}
> /**
> * Get statistics about the data to be loaded. If no statistics are
> * available, then null should be returned. If the implementing class also
> extends
> * {@link LoadFunc}, then {@link LoadFunc#setLocation(String,
> org.apache.hadoop.mapreduce.Job)}
> * is guaranteed to be called before this method.
> * @param location Location as returned by
> * {@link LoadFunc#relativeToAbsolutePath(String, org.apache.hadoop.fs.Path)}
> * @param job The {@link Job} object - this should be used only to obtain
> * cluster properties through {@link Job#getConfiguration()} and not to
> set/query
> * any runtime job information.
> * @return statistics about the data to be loaded. If no statistics are
> * available, then null should be returned.
> * @throws IOException if an exception occurs while retrieving statistics
> */
> ResourceStatistics getStatistics(String location, Job job)
> throws IOException;
> {code}
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