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1. Generic Load/Save Functions - Spark 3.2.0 Documentation

   usersDF.write.format("orc")
   .option("orc.bloom.filter.columns", "favorite_color")
   .option("orc.dictionary.key.threshold", "1.0")
   .option("orc.column.encoding.direct", "name")
   .save("users_with_options.orc")
   Find full example code at "examples/src/main/scala/org/apache/spark/examples/sql/SQLDataSourceExample.scala" in the Spark repo

   2021-12-01 Tags: spark, orc, bloom filter, parquet, hadoop by klotz
2. Heed The Geek: Origin of the Species; Elves, Dwarves and Orcs

   2020-03-07 Tags: dwarves, elves, orc, neanderthal, ontology, mythology by klotz
3. Creating Hive table using ORC format and importing data – My IT Learnings

   2019-12-02 Tags: hive, orc, spark by klotz
4. ORC Creation Best Practices - Hortonworks

   -set hive.exec.orc.split.strategy=ETL; -- this will work only for specific values scan, if full table scan will be required anyway, use default (HYBRID) or BI.

   2017-06-12 Tags: spark, hadoop, orc, hive, performance, tuning, etl, bi, hybrid by klotz
5. Hive Optimizations with Indexes, Bloom-Filters and Statistics – Technology Snippets by Jörn Franke

   2017-03-08 Tags: orc, optimization, bloom filter, index, hadoop by klotz
6. Microsoft OLAP Blog by Hilmar Buchta: Hive file format comparison

   2017-02-13 Tags: hadoop, avro, orc, parquet, comparison, performance by klotz
7. Data Formats / AVRO and ORC

   2016-10-31 Tags: avro, orc, benchmarks by klotz

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