While uniform data distributions were a design choice for the TPC-D benchmark and its successor TPC-H, it has been universally recognized that data skew is prevalent in data warehousing. A modern benchmark should therefore provide a test bed to evaluate the ability of database engines to ...
Download | Version: 1.1 Date Published: 7/15/2024 File Name: TPCDSkew.zip File Size: 246.0 KB The schema and queries of the TPC-H (formerly TPC-D) benchmark are widely used by people in the database community. One of the requirements of the benchmark is that data for columns in th...
SKEW SHOW-DATA-TYPES SHOW-DATABASE-ID SHOW-DATABASES SHOW-DELETE SHOW-DYNAMIC-PARTITION SHOW-ENCRYPT-KEY SHOW-ENGINES SHOW-EVENTS SHOW-EXPORT SHOW-FILE SHOW-FRONTENDS SHOW-FRONTENDS-DISKS SHOW-FUNCTIONS SHOW-GRANTS SHOW-INDEX SHOW-LAST-INSERT SHOW-LOAD SHOW-LOAD-PROFILE SHOW-LOAD-WARNINGS SHOW-...
One compute node is assigned to each partition, which is a classic Balls into Bins problem. To reduce the maximum load, when random scheduling is uneven, the "two choices" approach [8] is re-employed, trading twice the space for an exponential decrease in skew ratio. Join The columnar CBO...
Variations of the star schema benchmark to test the effects of data skew on query performance SSB's data generator, based on TPC-H's dbgen, is not easy to adapt to different data distributions as its meta data and actual data generation ... - ACM 被引量: 24发表: 2013年研究...