impala

mirror of https://github.com/apache/impala.git synced 2026-01-25 09:01:08 -05:00

Files

Nong Li 7f08146b88 Add ndv (distinct estimate) as a builtin aggregate function.

This is implemented in the BE using HLL (but we could change this in the
future).

These estimates usually work better than the other algorithm we have and
we've not implemented all the improvements from the google paper.

Change-Id: Ied715ddd0e1a7cbe7f5f90469f1ed3d4b9c537c7
Reviewed-on: http://gerrit.ent.cloudera.com:8080/956
Reviewed-by: Nong Li <nong@cloudera.com>
Tested-by: jenkins

2014-01-08 10:54:03 -08:00

functional-planner

Add OFFSET to skip rows returned with a LIMIT

2014-01-08 10:54:02 -08:00

functional-query

Add ndv (distinct estimate) as a builtin aggregate function.

2014-01-08 10:54:03 -08:00

hive-benchmark

Refactor testing framework to generate Avro tables.

2014-01-08 10:48:45 -08:00

targeted-perf

Add targeted perf regression test for IMPALA-288

2014-01-08 10:50:13 -08:00

targeted-stress

Refactor testing framework to generate Avro tables.

2014-01-08 10:48:45 -08:00

tpcds

IMPALA-598: Order by behavior for NULLs should be revisited

2014-01-08 10:53:48 -08:00

tpcds-insert

Add partitioned tpcds insert workload and tests

2014-01-08 10:52:16 -08:00

tpch

Add Catalog Service and support for automatic metadata refresh

2014-01-08 10:53:11 -08:00

README

Move functional data loading to new framework + initial changes for workload directory structure

2014-01-08 10:44:18 -08:00

README

This directory contains Impala test workloads. The directory layout for the workloads should follow:

workloads/
   <data set name>/<data set name>_dimensions.csv  <- The test dimension file
   <data set name>/<data set name>_core.csv  <- A test vector file
   <data set name>/<data set name>_pairwise.csv
   <data set name>/<data set name>_exhaustive.csv
   <data set name>/queries/<query test>.test <- The queries for this workload