Step 1 of 4: Choose Issues

Cancel

T Patch Info Key Summary Assignee Reporter P Status Resolution Created Updated Due Development
Sub-task SPARK-22917

SPARK-21975 Should not try to generate histogram for empty/null columns

Zhenhua Wang Zhenhua Wang Major Resolved Fixed  
Sub-task SPARK-22475

SPARK-21975 show histogram in DESC COLUMN command

Marco Gaido Zhenhua Wang Major Resolved Fixed  
Sub-task SPARK-22310

SPARK-21975 Refactor join estimation to incorporate estimation logic for different kinds of statistics

Zhenhua Wang Zhenhua Wang Major Resolved Fixed  
Sub-task SPARK-22285

SPARK-21975 Change implementation of ApproxCountDistinctForIntervals to TypedImperativeAggregate

Zhenhua Wang Zhenhua Wang Major Resolved Fixed  
Sub-task SPARK-22164

SPARK-21975 support histogram in estimating the cardinality of aggregate (or group-by) operator

Unassigned Ron Hu Major Closed Won't Fix  
Sub-task SPARK-22100

SPARK-21975 Make percentile_approx support date/timestamp type and change the output type to be the same as input type

Zhenhua Wang Zhenhua Wang Major Resolved Fixed  
Sub-task SPARK-21984

SPARK-21975 Use histogram stats in join estimation

Zhenhua Wang Zhenhua Wang Major Resolved Fixed  
Sub-task SPARK-21322

SPARK-21975 support histogram in filter cardinality estimation

Ron Hu Ron Hu Major Resolved Fixed  
Sub-task SPARK-17997

SPARK-21975 Aggregation function for counting distinct values for multiple intervals

Zhenhua Wang Zhenhua Wang Major Resolved Fixed  
Sub-task SPARK-17074

SPARK-21975 generate equi-height histogram for column

Zhenhua Wang Ron Hu Major Resolved Fixed  

Cancel