[HIVE-26881] tblproperties are not cleaned from jobConf for TezTask

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 3.1.3
• Component/s: Hive
• Assignee: Unassigned
• Reporter: Yi Zhang
• Created: 21/Dec/22 02:15
• Updated: 21/Dec/22 02:15

Description

Users uses xmlserde to read xml files, when user create table they specify tblproperties and it uses jobConf 

https://github.com/VenkataNU/hivexmlserde/blob/main/src/main/java/com/ibm/spss/hive/serde2/xml/XmlInputFormat.java#L72

in Tez mode, after 1st query run, those tblproperties are part of Driver.conf, so then next query runs, the jobConf of the tez job contains the tblproperties from last run. This is cause wrong results since the next query should not use last query's tblproperties.