Hi Mich, Index support was removed from hive: https://issues.apache.org/jira/browse/HIVE-21968 <https://issues.apache.org/jira/browse/HIVE-21968> https://issues.apache.org/jira/browse/HIVE-18715 <https://issues.apache.org/jira/browse/HIVE-18715>
Thanks, Peter > On Nov 11, 2020, at 17:25, Mich Talebzadeh <mich.talebza...@gmail.com> wrote: > > Hi all, > > I wrote these notes earlier this year. > > I heard today that someone mentioned Hive 1 does not support indexes but hive > 2 does. > > I still believe that Hive does not support indexing as per below. Has this > been changed? > > Regards, > > Mich > > ---------- Forwarded message --------- > From: Mich Talebzadeh <mich.talebza...@gmail.com > <mailto:mich.talebza...@gmail.com>> > Date: Thu, 2 Apr 2020 at 12:17 > Subject: How useful are tools for Hive data modeling > To: user <user@hive.apache.org <mailto:user@hive.apache.org>> > > > Hi, > > Fundamentally Hive tables have structure and support provided by desc > formatted <TABLE> and show partitions <TABLE>. > > Hive does not support indexes in real HQL operations (I stand corrected). So > what we have are tables, partitions and clustering (AKA hash partitioning). > > Hive does not support indexes because Hadoop lacks blocks locality necessary > for indexes. So If I use a tool like Collibra, Ab-intio etc what advantage(s) > one is going to gain on top a simple sell scrip to get table and partition > definitions? > > Thanks, > > > Disclaimer: Use it at your own risk. Any and all responsibility for any loss, > damage or destruction of data or any other property which may arise from > relying on this email's technical content is explicitly disclaimed. The > author will in no case be liable for any monetary damages arising from such > loss, damage or destruction. >
