[HIVE-12791] Truncated table stats should return 0 as datasize

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Assignee: Pengcheng Xiong
• Reporter: Pengcheng Xiong
• Created: 06/Jan/16 20:30
• Updated: 24/Aug/17 14:46
• Resolved: 08/Jun/16 22:46

Description

create table s as select * from src;
truncate table s;
hive> explain select * from s;
OK
STAGE DEPENDENCIES:
  Stage-0 is a root stage

STAGE PLANS:
  Stage: Stage-0
    Fetch Operator
      limit: -1
      Processor Tree:
        TableScan
          alias: s
          Statistics: Num rows: 29 Data size: 5812 Basic stats: COMPLETE Column stats: NONE
          Select Operator
            expressions: key (type: string), value (type: string)
            outputColumnNames: _col0, _col1
            Statistics: Num rows: 29 Data size: 5812 Basic stats: COMPLETE Column stats: NONE
            ListSink

Time taken: 0.048 seconds, Fetched: 17 row(s)

should be

Num rows: 1 Data size: 0