Zoltan Borok-Nagy has submitted this change and it was merged. ( 
http://gerrit.cloudera.org:8080/17593 )

Change subject: IMPALA-10166 (part 2): Enable DROP and CHANGE column
......................................................................

IMPALA-10166 (part 2): Enable DROP and CHANGE column

IMPALA-10166 (part 1) already added the necessary code for
DROP and CHANGE COLUMN, but disabled those stmts because to correctly
support schema evolution we had to wait for column resolution
by Iceberg field id.

Since then IMPALA-10361 and IMPALA-10485 added support for field-id
based column resolution for Parquet and ORC as well.

Hence this patch enables DROP and CHANGE column ALTER TABLE
statements. We still disallow REPLACE COLUMNS because it doesn't
really make sense for Iceberg tables as it basically makes all
existing data inaccessible.

Changing DECIMAL columns are still disabled due to IMPALA-7087.

Testing:
 * added e2e tests

Change-Id: I9b0d1a55bf0ed718724a69b51392ed53680ffa90
Reviewed-on: http://gerrit.cloudera.org:8080/17593
Reviewed-by: Impala Public Jenkins <[email protected]>
Tested-by: Zoltan Borok-Nagy <[email protected]>
---
M fe/src/main/java/org/apache/impala/analysis/AlterTableReplaceColsStmt.java
M fe/src/main/java/org/apache/impala/service/CatalogOpExecutor.java
M fe/src/main/java/org/apache/impala/service/IcebergCatalogOpExecutor.java
M testdata/workloads/functional-query/queries/QueryTest/iceberg-alter.test
M testdata/workloads/functional-query/queries/QueryTest/iceberg-negative.test
5 files changed, 156 insertions(+), 38 deletions(-)

Approvals:
  Impala Public Jenkins: Looks good to me, approved
  Zoltan Borok-Nagy: Verified

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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: merged
Gerrit-Change-Id: I9b0d1a55bf0ed718724a69b51392ed53680ffa90
Gerrit-Change-Number: 17593
Gerrit-PatchSet: 7
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: Zoltan Borok-Nagy <[email protected]>
Gerrit-Reviewer: wangsheng <[email protected]>

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