[jira] [Work logged] (HIVE-26417) Iceberg integration: disable update and merge iceberg table when split update is off

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-26417?focusedWorklogId=793327&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-793327 ]

ASF GitHub Bot logged work on HIVE-26417:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 20/Jul/22 16:08
            Start Date: 20/Jul/22 16:08
    Worklog Time Spent: 10m 
      Work Description: kasakrisz opened a new pull request, #3461:
URL: https://github.com/apache/hive/pull/3461

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   ### What changes were proposed in this pull request?
   1. Separate legacy and split update early version of Update and Merge SemanticAnalyzer into separate classes.
   2. Disable legacy update of iceberg tables. Throw exception.
   3. Remove `HiveIcebergUpdateWriter.java` and `HiveIcebergBufferedDeleteWriter.java`
   
   ### Why are the changes needed?
   Update and Merge of iceberg tables is only supported using split update early feature.
   
   ### Does this PR introduce _any_ user-facing change?
   No.
   
   ### How was this patch tested?
   ```
   mvn test -Dtest.output.overwrite -Dtest=TestIcebergNegativeCliDriver -Dqfile=update_split_update_off.q,merge_split_update_off.q -pl itests/qtest-iceberg -Piceberg -Pitests
   mvn test -Dtest.output.overwrite -Dtest=TestIcebergCliDriver -Dqfile=merge_iceberg_orc.q,merge_iceberg_partitioned_orc.q,update_iceberg_partitioned_orc.q -pl itests/qtest-iceberg -Piceberg -Pitests
   mvn test -Dtest.output.overwrite -DskipSparkTests -Dtest=TestMiniLlapLocalCliDriver -Dqfile=sort_acid.q -pl itests/qtest -Pitests
   ```




Issue Time Tracking
-------------------

            Worklog Id:     (was: 793327)
    Remaining Estimate: 0h
            Time Spent: 10m

> Iceberg integration: disable update and merge iceberg table when split update is off
> ------------------------------------------------------------------------------------
>
>                 Key: HIVE-26417
>                 URL: https://issues.apache.org/jira/browse/HIVE-26417
>             Project: Hive
>          Issue Type: Improvement
>          Components: File Formats
>            Reporter: Krisztian Kasa
>            Assignee: Krisztian Kasa
>            Priority: Major
>             Fix For: 4.0.0
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> Iceberg table update and merge is implemented using split update early by HIVE-26319 and HIVE-26385.
> Without split update early deleted records has to be buffered in memory  when updating iceberg tables. With split update early deleted records are processed by a separate reducer and no buffering is required. The ReduceSink operator also sorts the records.



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