Hadoop Hive - ORC Files
ORC File Format File Structure Stripe Structure HiveQLSyntax Serialization and Compression Integer Column Serialization String Column Serialization Compression ORC File Format The Optimized Row Columnar (ORC) file format provides a highly efficient way to store Hive data. It was designed to overcome limitations of the other Hive file formats. Using ORC files improves performance when Hive is readi
ORCFile in HDP 2: Better Compression, Better Performance - Cloudera Blog
ORCFile in HDP 2: Better Compression, Better Performance The upcoming Hive 0.12 is set to bring some great new advancements in the storage layer in the forms of higher compression and better query performance. Higher Compression ORCFile was introduced in Hive 0.11 and offered excellent compression, delivered through a number of techniques including run-length encoding, dictionary encoding for stri
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