Just correction: ORC Java libraries from Hive are forked into Apache ORC. Vectorization default.
Do not know If Spark leveraging this new repo? <dependency> <groupId>org.apache.orc</groupId> <artifactId>orc</artifactId> <version>1.1.2</version> <type>pom</type> </dependency> Sent from my iPhone > On Jul 26, 2016, at 4:50 PM, Koert Kuipers <ko...@tresata.com> wrote: > > parquet was inspired by dremel but written from the ground up as a library > with support for a variety of big data systems (hive, pig, impala, cascading, > etc.). it is also easy to add new support, since its a proper library. > > orc bas been enhanced while deployed at facebook in hive and at yahoo in > hive. just hive. it didn't really exist by itself. it was part of the big > java soup that is called hive, without an easy way to extract it. hive does > not expose proper java apis. it never cared for that. > >> On Tue, Jul 26, 2016 at 9:57 AM, Ovidiu-Cristian MARCU >> <ovidiu-cristian.ma...@inria.fr> wrote: >> Interesting opinion, thank you >> >> Still, on the website parquet is basically inspired by Dremel (Google) [1] >> and part of orc has been enhanced while deployed for Facebook, Yahoo [2]. >> >> Other than this presentation [3], do you guys know any other benchmark? >> >> [1]https://parquet.apache.org/documentation/latest/ >> [2]https://orc.apache.org/docs/ >> [3] >> http://www.slideshare.net/oom65/file-format-benchmarks-avro-json-orc-parquet >> >>> On 26 Jul 2016, at 15:19, Koert Kuipers <ko...@tresata.com> wrote: >>> >>> when parquet came out it was developed by a community of companies, and was >>> designed as a library to be supported by multiple big data projects. nice >>> >>> orc on the other hand initially only supported hive. it wasn't even >>> designed as a library that can be re-used. even today it brings in the >>> kitchen sink of transitive dependencies. yikes >>> >>> >>>> On Jul 26, 2016 5:09 AM, "Jörn Franke" <jornfra...@gmail.com> wrote: >>>> I think both are very similar, but with slightly different goals. While >>>> they work transparently for each Hadoop application you need to enable >>>> specific support in the application for predicate push down. >>>> In the end you have to check which application you are using and do some >>>> tests (with correct predicate push down configuration). Keep in mind that >>>> both formats work best if they are sorted on filter columns (which is your >>>> responsibility) and if their optimatizations are correctly configured (min >>>> max index, bloom filter, compression etc) . >>>> >>>> If you need to ingest sensor data you may want to store it first in hbase >>>> and then batch process it in large files in Orc or parquet format. >>>> >>>>> On 26 Jul 2016, at 04:09, janardhan shetty <janardhan...@gmail.com> wrote: >>>>> >>>>> Just wondering advantages and disadvantages to convert data into ORC or >>>>> Parquet. >>>>> >>>>> In the documentation of Spark there are numerous examples of Parquet >>>>> format. >>>>> >>>>> Any strong reasons to chose Parquet over ORC file format ? >>>>> >>>>> Also : current data compression is bzip2 >>>>> >>>>> http://stackoverflow.com/questions/32373460/parquet-vs-orc-vs-orc-with-snappy >>>>> >>>>> This seems like biased. >