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Posted to issues@impala.apache.org by "Yuchen Fan (Jira)" <ji...@apache.org> on 2024/01/03 08:45:00 UTC

[jira] [Created] (IMPALA-12672) Column comments in HMS becoming 'NULL' when loading kudu tables

Yuchen Fan created IMPALA-12672:
-----------------------------------

             Summary: Column comments in HMS becoming 'NULL' when loading kudu tables
                 Key: IMPALA-12672
                 URL: https://issues.apache.org/jira/browse/IMPALA-12672
             Project: IMPALA
          Issue Type: Bug
          Components: Catalog
    Affects Versions: Impala 4.1.0
            Reporter: Yuchen Fan
            Assignee: Yuchen Fan
         Attachments: image-2024-01-03-16-41-08-406.png, image-2024-01-03-16-41-54-119.png

If HMS integration is not enabled in Kudu, Impala catalogd loads a kudu table will change column comments in HMS to 'NULL'.

How to reproduce:
 # create a kudu table with some column comments;
 # check out comments in database of Hive Metastore;
 # executing 'show create table xxx' or some other ddls;
 # check out comments again, and it will be replaced with 'NULL';

Newly created kudu table: 

!image-2024-01-03-16-41-54-119.png!

After 'show create table kudu_test3' executed:

!image-2024-01-03-16-41-08-406.png!



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