DBT-809 Microbatch support for dbt-hive adapter

[niranjancdw]

Describe your changes

Added support for microbatch strategy in incremental mode for dbt-hive adapter.

Internal Jira ticket number or external issue link

https://cloudera.atlassian.net/browse/DBT-809

Testing procedure/screenshots(if appropriate):

https://gist.github.com/niranjancdw/36b901d49b55fbe11f2bc4c9237a0d7d

Checklist before requesting a review

• I have performed a self-review of my code
• I have formatted my added/modified code to follow pep-8 standards
• I have checked suggestions from python linter to make sure code is of good quality.

[Copilot]

Pull Request Overview

Adds support for the new microbatch incremental strategy in the dbt-hive adapter by extending validation macros, integrating the strategy into materialization logic, and adding functional tests.

• Extend file‐format and incremental‐strategy validators to allow microbatch and enforce partition_by
• Wire microbatch through strategy dispatch and early validation in incremental.sql
• Add functional tests covering missing partition_by and bump test adapter dependency

Reviewed Changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
tests/functional/adapter/incremental/test_incremental_microbatch.py	New tests for microbatch strategy, including missing partition_by
dev-requirements.txt	Bumped dbt-tests-adapter from 1.9.* to 1.10.*
dbt/include/hive/macros/materializations/incremental/validate.sql	Added avro format, support for microbatch, and partition_by check
dbt/include/hive/macros/materializations/incremental/strategies.sql	Treat microbatch as an insert_overwrite variant
dbt/include/hive/macros/materializations/incremental/incremental.sql	Hooked validation macros before running incremental SQL
dbt/adapters/hive/relation.py	Introduced _render_subquery_alias helper for conditional aliases

Comments suppressed due to low confidence (3)

tests/functional/adapter/incremental/test_incremental_microbatch.py:59

• [nitpick] Class name TestHiveMicroBatchNoPartitionKey uses inconsistent casing for “MicroBatch” compared to TestHiveMicrobatch. Consider renaming to TestHiveMicrobatchNoPartitionKey for consistency.

class TestHiveMicroBatchNoPartitionKey:

dbt/include/hive/macros/materializations/incremental/validate.sql:66

• [nitpick] This compiler error message is split across multiple lines and may include unintended whitespace or line breaks. Consider consolidating it into a single line or trimming surrounding whitespace to ensure the output is clean.

      dbt-hive 'microbatch' incremental strategy requires a `partition_by` config.

tests/functional/adapter/incremental/test_incremental_microbatch.py:42

• Tests cover the error path for missing partition_by, but there isn’t a functional test verifying a successful microbatch run when partition_by is provided. Consider adding a positive test case to confirm correct behavior.

class TestHiveMicrobatch(BaseMicrobatch):