* test: Add integration tests for picosecond support

* chore: Add a micro -> pico exact timestamp test case

* chore: Add additional test cases

* chore: Fix test cases with 'Z'

* chore: Test if first query has an impact

* chore: Remove flaky test for now

* chore: Remove testing comment

* test: Add integration tests for picosecond support

* chore: Add a micro -> pico exact timestamp test case

* chore: Add additional test cases

* chore: Fix test cases with 'Z'

* chore: Test if first query has an impact

* chore: Remove flaky test for now

* chore: Remove testing comment

#4030)

…ol resizing and refresh

Before this change ChannelPool creates a new
SingleThreadScheduledExecutor every time getTransportChannel is called.
We can reuse the same background executor from the clientSettings and
can reduce the number of threads when the user creates many instances of
the client.

---------

Co-authored-by: Blake Li <[email protected]>

🤖 I have created a release *beep* *boop*
---


<details><summary>2.65.0</summary>

##
[2.65.0](googleapis/sdk-platform-java@v2.64.2...v2.65.0)
(2026-01-12)


### Features

* add org.json:json to third-party-dependencies pom
([#4047](googleapis/sdk-platform-java#4047))
([5898abd](googleapis/sdk-platform-java@5898abd)),
closes
[#4046](googleapis/sdk-platform-java#4046)
* remove dependency management of graal-sdk
([#4033](googleapis/sdk-platform-java#4033))
([09ec2a3](googleapis/sdk-platform-java@09ec2a3))


### Bug Fixes

* add api_version breadcrumb to client docs
([#4018](googleapis/sdk-platform-java#4018))
([0573232](googleapis/sdk-platform-java@0573232))
* Create a single S2AChannelCredentials per application
([#3989](googleapis/sdk-platform-java#3989))
([6a24164](googleapis/sdk-platform-java@6a24164))
* provide API to share the same background executor for channel po…
([#4030](googleapis/sdk-platform-java#4030))
([051f76a](googleapis/sdk-platform-java@051f76a))


### Dependencies

* update dependencies.txt for grpc-gcp to 1.9.0
([#4025](googleapis/sdk-platform-java#4025))
([2376f6c](googleapis/sdk-platform-java@2376f6c))
* update google api dependencies
([#3917](googleapis/sdk-platform-java#3917))
([bf94a0a](googleapis/sdk-platform-java@bf94a0a))
* update google.http-client.version to 2.0.3
([#4054](googleapis/sdk-platform-java#4054))
([343a8ef](googleapis/sdk-platform-java@343a8ef))


### Documentation

* Fix retry guide link in javadocs
([#4029](googleapis/sdk-platform-java#4029))
([4bb3ccc](googleapis/sdk-platform-java@4bb3ccc))
</details>

---
This PR was generated with [Release
Please](https://github.com/googleapis/release-please). See
[documentation](https://github.com/googleapis/release-please#release-please).

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>

* feat: Integration Tests setup for experimental host

* added tracking bug for invalid column allow timestamp validation