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https://issues.apache.org/jira/browse/IMPALA-8636?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16897391#comment-16897391
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Zoltán Borók-Nagy commented on IMPALA-8636:
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Impala will only support insert-only ACID tables. It means Impala can create,
query, and insert such tables. These are implemented already on the master
branch.
However, there's chance that Impala won't be able to drop (despite it can
create), alter, or truncate such tables. There's active development on those
features so we'll see if they can land before the release.
> Implement INSERT for insert-only ACID tables
> --------------------------------------------
>
> Key: IMPALA-8636
> URL: https://issues.apache.org/jira/browse/IMPALA-8636
> Project: IMPALA
> Issue Type: New Feature
> Reporter: Zoltán Borók-Nagy
> Assignee: Zoltán Borók-Nagy
> Priority: Critical
> Labels: impala-acid
> Fix For: Impala 4.0, Impala 3.3.0
>
>
> Impala should support insertion for insert-only ACID tables.
> For this we need to allocate a write ID for the target table, and write the
> data into the base/delta directories.
> INSERT operation should create a new delta directory with the allocated write
> ID.
> INSERT OVERWRITE should create a new base directory with the allocated write
> ID. This new base directory will only contain the data coming from this
> operation.
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