[HIVE-15374] Hive column comments disappearing/being replaced by "from deserializer"

• Type: Bug
• Status: Patch Available
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 2.0.0
• Component/s: Hive
• Assignee: Naveen Gangam
• Reporter: Naveen Gangam
• Created: 06/Dec/16 21:47
• Updated: 07/Dec/16 12:25

Description

After creating a table in hive with column comments, running show create table or describe [formatted], on the same table gives "from deserializer" instead of the original comments.

CREATE TABLE `test`(
`stringid` string COMMENT 'string id',
`value` string COMMENT 'description')
ROW FORMAT SERDE
'org.apache.hadoop.hive.contrib.serde2.RegexSerDe'
WITH SERDEPROPERTIES (
'input.regex'='(.

{1}

)');

The comments appear to be stored correctly in the HMS backend DB. Just the fetching of this metadata seems to be incorrect.