cassandra-commits mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Aleksey Yeschenko (JIRA)" <>
Subject [jira] [Commented] (CASSANDRA-8576) Primary Key Pushdown For Hadoop
Date Mon, 29 Jun 2015 16:06:05 GMT


Aleksey Yeschenko commented on CASSANDRA-8576:

bq. (Edit: Piotr +1'd v3 already)

Doh, you are right.

> Primary Key Pushdown For Hadoop
> -------------------------------
>                 Key: CASSANDRA-8576
>                 URL:
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Hadoop
>            Reporter: Russell Alexander Spitzer
>            Assignee: Alex Liu
>             Fix For: 2.2.x
>         Attachments: 8576-2.1-branch.txt, 8576-trunk.txt, CASSANDRA-8576-v2-2.1-branch.txt,
> I've heard reports from several users that they would like to have predicate pushdown
functionality for hadoop (Hive in particular) based services. 
> Example usecase
> Table with wide partitions, one per customer
> Application team has HQL they would like to run on a single customer
> Currently time to complete scales with number of customers since Input Format can't pushdown
primary key predicate
> Current implementation requires a full table scan (since it can't recognize that a single
partition was specified)

This message was sent by Atlassian JIRA

View raw message