hive’s merge command provides another option for acid transactioning beyond insert, update and delete — this post walks you through a simple example and looks at the underlying filesystem at all the base, delta and delta_delete files that are created to support this standard sql command
Tag Archives: open_source
hive delta file compaction (minor and major)
a quick walk-thru of how minor and major compactions occur for hive transactional tables; ensuring all the delta files eventually roll into base ones
hive acid transactions with partitions (a behind the scenes perspective)
let’s take a deeper look at what happens under the hood of hive on these “acid” activities such as insert, update and delete — including look at the actual directories and orc files created
viewing the content of ORC files (using the Java ORC tool jar)
a quick tutorial about finding and using the orc java tool jar for peering into the contents of the otherwise non humanly readable orc file format
topology supervision features of streaming frameworks (or lack thereof)
a smackdown of sort pitting kafka streams, spark streaming, and storm against each other — not for the features they give developers, but for the features they offer the operations side of the devops formula