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https://issues.apache.org/jira/browse/IMPALA-10237?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17252680#comment-17252680
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ASF subversion and git services commented on IMPALA-10237:
----------------------------------------------------------
Commit 6cb7cecacf0c091a19eb261f3a9c7d841c0e0676 in impala's branch
refs/heads/master from Gabor Kaszab
[ https://gitbox.apache.org/repos/asf?p=impala.git;h=6cb7cec ]
IMPALA-10237: Support Bucket and Truncate partition transforms as built-in
functions
This patch implements Truncate and Bucket partition transforms in
Impala BE as built-in functions. The expectation is that these
functions give the same result as Iceberg's implementation of the same
functions. These built-in functions are invisible so users won't be
able to invoke them e.g. from impala-shell.
Truncate:
- Supported types are IntVal, BigIntVal, StringVal, DecimalVal.
- Receives an input from the above types and a width.
- Returns the same type as the input.
- Expected behaviour is explained here:
https://iceberg.apache.org/spec/#truncate-transform-details
Bucket:
- Supported types are IntVal, BigIntVal, StringVal, DecimalVal,
DateVal, TimestampVal.
- Receives an input from the above types and the number of buckets as
IntVal.
- Returns IntVal.
- Expected behaviour is explained here:
https://iceberg.apache.org/spec/#bucket-transform-details
Change-Id: I485680cf79d96d578dd8cfbfd554bec468fe84bd
Reviewed-on: http://gerrit.cloudera.org:8080/16741
Reviewed-by: Gabor Kaszab <[email protected]>
Tested-by: Impala Public Jenkins <[email protected]>
> Support BUCKET and TRUNCATE partition transforms as built-in functions
> ----------------------------------------------------------------------
>
> Key: IMPALA-10237
> URL: https://issues.apache.org/jira/browse/IMPALA-10237
> Project: IMPALA
> Issue Type: Improvement
> Components: Backend, Frontend
> Reporter: Gabor Kaszab
> Assignee: Gabor Kaszab
> Priority: Major
> Labels: impala-iceberg
>
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