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Posted to issues@iceberg.apache.org by "wngus606 (via GitHub)" <gi...@apache.org> on 2024/03/08 01:32:45 UTC
[I] I'm curious about the hive.metastore.disallow.incompatible.col.type.changes settings. [iceberg]
wngus606 opened a new issue, #9897:
URL: https://github.com/apache/iceberg/issues/9897
### Query engine
_No response_
### Question
Hello.
I'm leaving an inquiry because I want to understand the "hive.metastore.disallow.incompatible.col.type.changes" setting in detail.
When I read the [document](https://cwiki.apache.org/confluence/display/Hive/Configuration+Properties#ConfigurationProperties-hive.metastore.disallow.incompatible.col.type.changes), it was found to be related to the possibility of converting the data type of the column and compatibility. However, if you use `ALTER TABLE iceberg.iceberg_db.iceberg_table DROP COLUMN 'name'`, the same error occurs. If you delete a column here, the data related to that column will be removed from the table, which I think is separate from the compatibility issue of data type, and I wonder what it has to do with this setting.
can I check the code related to this?
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Re: [I] I'm curious about the `hive.metastore.disallow.incompatible.col.type.changes` settings. [iceberg]
Posted by "pvary (via GitHub)" <gi...@apache.org>.
pvary commented on issue #9897:
URL: https://github.com/apache/iceberg/issues/9897#issuecomment-1985132511
I think this question should be asked from the Hive folks.
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Re: [I] I'm curious about the `hive.metastore.disallow.incompatible.col.type.changes` settings. [iceberg]
Posted by "nastra (via GitHub)" <gi...@apache.org>.
nastra commented on issue #9897:
URL: https://github.com/apache/iceberg/issues/9897#issuecomment-1991240287
I agree with @pvary, this seems like a question that should be asked in the Hive community at https://github.com/apache/hive (or the Hive JIRA)
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Re: [I] I'm curious about the `hive.metastore.disallow.incompatible.col.type.changes` settings. [iceberg]
Posted by "deniskuzZ (via GitHub)" <gi...@apache.org>.
deniskuzZ commented on issue #9897:
URL: https://github.com/apache/iceberg/issues/9897#issuecomment-2722356539
@wngus606, what version of HMS are you using, 2.3? 2.x and 3.x are EOL, v4.0 handles drop column properly.
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Re: [I] I'm curious about the `hive.metastore.disallow.incompatible.col.type.changes` settings. [iceberg]
Posted by "nastra (via GitHub)" <gi...@apache.org>.
nastra closed issue #9897: I'm curious about the `hive.metastore.disallow.incompatible.col.type.changes` settings.
URL: https://github.com/apache/iceberg/issues/9897
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