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https://issues.apache.org/jira/browse/IMPALA-12457?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Pranav Yogi Lodha reassigned IMPALA-12457:
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Assignee: Pranav Yogi Lodha
> Conversion from non-supported column types for Iceberg tables
> -------------------------------------------------------------
>
> Key: IMPALA-12457
> URL: https://issues.apache.org/jira/browse/IMPALA-12457
> Project: IMPALA
> Issue Type: Improvement
> Components: Frontend
> Reporter: Gabor Kaszab
> Assignee: Pranav Yogi Lodha
> Priority: Minor
> Labels: impala-iceberg
>
> Assume you have a Hive table with one VARCHAR(N) column. The following now
> fails:
> CREATE TABLE ice_tbl STORED AS ICEBERG AS SELECT * FROM hive_tbl;
> Fails because varchar(N) is not a supported Iceberg column type. Note, simple
> varchar works because it's just a string under the hood.
> I think this behaviour is just fine, Hive also gives an error for the above,
> however, Hive has a switch called 'iceberg.mr.schema.auto.conversion' that
> when you turn on Hive would do a conversion into string for varchar(N)
> automatically. Also smallint and tinyint could be converted into int.
> Would be nice to have something similar in Impala.
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