[
https://issues.apache.org/jira/browse/IMPALA-11034?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Gergely Fürnstáhl resolved IMPALA-11034.
----------------------------------------
Fix Version/s: Impala 4.2.0
Resolution: Fixed
> Resolve schema of old data files in migrated Iceberg tables
> -----------------------------------------------------------
>
> Key: IMPALA-11034
> URL: https://issues.apache.org/jira/browse/IMPALA-11034
> Project: IMPALA
> Issue Type: Bug
> Reporter: Zoltán Borók-Nagy
> Assignee: Gergely Fürnstáhl
> Priority: Major
> Labels: impala-iceberg
> Fix For: Impala 4.2.0
>
>
> When external tables are converted to Iceberg, the data files remain intact.
> This means that the old data files don't have field id information which is
> essential for schema evolution.
> However, there is a workaround for this, see:
> [https://github.com/trinodb/trino/issues/9843]
> We need to create a NameMapping which maps field ids to column names, then we
> can do column resolution in the legacy files with the help of the name
> mapping.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
