Method relativeRoot

src/org/apache/pig/impl/io/FileLocalizer.java:464–471

Accessor method to get the root ContainerDescriptor used for temporary files bound to this thread. Calling this method lazy-initialized the relativeRoot object. @param pigContext @return @throws DataStorageException

(final PigContext pigContext)

     * @throws DataStorageException
     */
    private static synchronized ContainerDescriptor relativeRoot(final PigContext pigContext)
            throws DataStorageException {
        if (relativeRoot.get() == null) {
            ContainerDescriptor relative = getTempContainer(pigContext);
            relativeRoot.set(relative);
        }
        return relativeRoot.get();
    }

    /**
     * Accessor method to get the resource ContainerDescriptor used for tez resource