Csaba Ringhofer has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/17593 )

Change subject: IMPALA-10166 (part 2): Enable DROP and CHANGE column
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Patch Set 1: Code-Review+1

(1 comment)

http://gerrit.cloudera.org:8080/#/c/17593/1/testdata/workloads/functional-query/queries/QueryTest/iceberg-alter.test
File testdata/workloads/functional-query/queries/QueryTest/iceberg-alter.test:

http://gerrit.cloudera.org:8080/#/c/17593/1/testdata/workloads/functional-query/queries/QueryTest/iceberg-alter.test@172
PS1, Line 172: float -> double is allowed by Iceberg.
Can you add some tests for other types? According to 
https://github.com/apache/impala/blob/master/fe/src/main/java/org/apache/impala/service/IcebergCatalogOpExecutor.java#L119
only 3 type conversions are supported.

I am particularly curious about the decimal -> decimal change, which looks hard 
to implement correctly.



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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I9b0d1a55bf0ed718724a69b51392ed53680ffa90
Gerrit-Change-Number: 17593
Gerrit-PatchSet: 1
Gerrit-Owner: Zoltan Borok-Nagy <[email protected]>
Gerrit-Reviewer: Attila Jeges <[email protected]>
Gerrit-Reviewer: Csaba Ringhofer <[email protected]>
Gerrit-Reviewer: Impala Public Jenkins <[email protected]>
Gerrit-Reviewer: wangsheng <[email protected]>
Gerrit-Comment-Date: Tue, 15 Jun 2021 06:18:40 +0000
Gerrit-HasComments: Yes

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