bigdata

Hive - Unit-testing

Testing is really important for coding. It provide ensuring the code is working. It is really a way to gain rather it is thought as time lost. This is actually another topic sould be discussed in another article. Unit-testing is one of most tough thing among coding phases. If you

Hive - Sliding Last Not Null Value

Hive supports windowing features over columns according to current row. You can see the documantation about windowing functions in Hive at [LanguageManual WindowingAndAnalytics](https://cwiki.apache.org/confluence/display/Hive/LanguageManual+WindowingAndAnalytics" target="_blank). Those functions are not going be the topic in this article. Assume that, you