Travis Crawford created PIG-2730:
------------------------------------
Summary: 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
[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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