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https://issues.apache.org/jira/browse/HIVE-26892?focusedWorklogId=836038&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-836038
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ASF GitHub Bot logged work on HIVE-26892:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 29/Dec/22 01:31
Start Date: 29/Dec/22 01:31
Worklog Time Spent: 10m
Work Description: cnauroth opened a new pull request, #3898:
URL: https://github.com/apache/hive/pull/3898
### What changes were proposed in this pull request?
HIVE-26892: Backport
[HIVE-25243](https://issues.apache.org/jira/browse/HIVE-25243) to 3.2.0: Handle
nested values in null struct.
This differs from the original patch as follows:
* There are no changes in `TestJdbcWithMiniLlapVectorArrow`. This file does
not exist in branch-3. The original patch was only a whitespace change though.
* I have not included the new test suite
`TestMiniLlapVectorArrowWithLlapIODisabled`. This test suite depends on an
additional feature that is only present in master:
[HIVE-20300](https://issues.apache.org/jira/browse/HIVE-20300) /
https://github.com/apache/hive/commit/a8ef2147fad5aeaaf01279230da9c584db6a2337.
This is a fairly large patch that I have not chosen to try backporting at this
time.
### Why are the changes needed?
On branch-3, we've seen a failure in `TestArrowColumnarBatchSerDe` while
trying to serialize a row of null values. It fails while trying to serialize
the fields of a null struct. This was fixed in 4.0 by
[HIVE-25243](https://issues.apache.org/jira/browse/HIVE-25243). This issue
tracks a backport to branch-3.
### Does this PR introduce _any_ user-facing change?
Null structs are now serialized to Arrow format correctly without error.
### How was this patch tested?
Unfortunately, we are left with no specific new tests as part of this
backport. However, I applied this patch locally in combination with
[HIVE-26840](https://issues.apache.org/jira/browse/HIVE-26840) / #3859. After
that, all tests in `TestArrowColumnarBatchSerDe` are passing.
Issue Time Tracking
-------------------
Worklog Id: (was: 836038)
Remaining Estimate: 0h
Time Spent: 10m
> Backport HIVE-25243 to 3.2.0: Handle nested values in null struct.
> ------------------------------------------------------------------
>
> Key: HIVE-26892
> URL: https://issues.apache.org/jira/browse/HIVE-26892
> Project: Hive
> Issue Type: Sub-task
> Components: Serializers/Deserializers
> Reporter: Chris Nauroth
> Assignee: Chris Nauroth
> Priority: Major
> Time Spent: 10m
> Remaining Estimate: 0h
>
> On branch-3, we've seen a failure in {{TestArrowColumnarBatchSerDe}} while
> trying to serialize a row of null values. It fails while trying to serialize
> the fields of a null struct. This was fixed in 4.0 by HIVE-25243. This issue
> tracks a backport to branch-3.
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