public HdfsJdbcJob dir(String dir) {
		Assert.hasText(dir, "Dir should not be empty nor null");
		this.dir = dir;
		return this;
	}
Sets the directory where the file will be read from the hdfs.
@param dir the directory path.
@return The current instance of the HdfsJdbcJob
spring-xd-test-fixtures/src/main/java/org/springframework/xd/test/fixtures/HdfsJdbcJob.java