There is no set date for the expiration of a Hortonworks Certification. Normally when a new certification format is implemented, it is desired to have the new certification over the old one and the new certification takes precedence. However, an overlap period will be considered to allow candidates to come up to speed and obtain the new certification. We will announce any new certification in the future and give you ample time to prepare for it. ... View more

You have to convert the DF to a table, then save the table like: myDF.registerTempTable("myTempTable") val myDFTable = sqlContext.sql("SELECT col1, col2, col3 FROM myTempTable WHERE col2 > 1000") myDFTable.map(x => x(0) + "," + x(1) + "," + x(2)).saveAsTextFile("output.csv") ... View more

Hello, Abhijit, The exam does not specify which method, that is up to you, as long as the output is in the correct format and # records. Hope that this helps ... View more

There is no need to build. The entire exam can be done via Scala/Python shells. Thanks ... View more