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From "Prasad Chakka (JIRA)" <>
Subject [jira] Commented: (HIVE-417) Implement Indexing in Hive
Date Wed, 08 Jul 2009 20:57:15 GMT


Prasad Chakka commented on HIVE-417:

One thing that isn't mentioned is that in List<bucketname, List<offset>> column,
offsets are sorted. 

Another thing missing is, when an index on a partition is built then a new partition will
be created for that index table (similar to that of creating a partition for a regular table).

We can distinguish index tables and regular tables by having a table parameter.

We can skip partition specific indexes in the first phase if it reduces amount of work and
assume indexes defined on a table can be created on all partitions.

> Implement Indexing in Hive
> --------------------------
>                 Key: HIVE-417
>                 URL:
>             Project: Hadoop Hive
>          Issue Type: New Feature
>          Components: Metastore, Query Processor
>    Affects Versions: 0.2.0, 0.3.0, 0.3.1, 0.4.0
>            Reporter: Prasad Chakka
>            Assignee: Yongqiang He
>         Attachments: hive-417.proto.patch
> Implement indexing on Hive so that lookup and range queries are efficient.

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