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https://issues.apache.org/jira/browse/IMPALA-12251?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Boglarka Egyed updated IMPALA-12251:
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Priority: Minor (was: Major)
> Table migration to run on multiple partitions in parallel
> ---------------------------------------------------------
>
> Key: IMPALA-12251
> URL: https://issues.apache.org/jira/browse/IMPALA-12251
> Project: IMPALA
> Issue Type: New Feature
> Components: Frontend
> Reporter: Gabor Kaszab
> Priority: Minor
> Labels: impala-iceberg
>
> https://issues.apache.org/jira/browse/IMPALA-11013 Introduces table migration
> from legacy Hive tables to Iceberg tables. The parallelization in this patch
> is based on files within a partition. But if there are a lot of partitions
> and only few files in them this approach is not performant.
> Instead, as an improvement we can implement the parallelisation based on
> partitions and then decide which one to used based on a # partitions / avg #
> of files in a partition ratio.
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