[Hadoop-common-dev] [jira] [Created] (HADOOP-7425) ReflectionUtils.setConf would configure the KeyFieldBasedPartitioner twice in Hadoop 0.21.0, when KeyFieldBasedPartitioner is an Configurable instance

ReflectionUtils.setConf would configure the KeyFieldBasedPartitioner twice in Hadoop 0.21.0, when KeyFieldBasedPartitioner is an Configurable instance
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Key: HADOOP-7425
URL: https://issues.apache.org/jira/browse/HADOOP-7425
Project: Hadoop Common
Issue Type: Bug
Components: util
Affects Versions: 0.21.0
Reporter: steven zhuang


In the setConf method of org.apache.hadoop.util.ReflectionUtils, any instance of Configurable would be configured twice.
In 0.21.0, KeyFieldBasedPartitioner implements the Configurable interface. When configured twice, it get two KeyDescription and gives out wrong partition number.


public static void setConf(Object theObject, Configuration conf) {
if (conf != null) {
if (theObject instanceof Configurable) {
((Configurable) theObject).setConf(conf);
}
setJobConf(theObject, conf);
}
}