Major Description
With Hadoop 0.20/1.0, storeSchema will be called after the temporary task files have been promoted to the output directory.
In 0.23, the timing of temporary task file promotion has changed by design, now when storeSchema is called the files have not been promoted to the output directory.
We have existing applications that depend on the temporary task files being promoted when storeSchema is called. This is a regression from 20.