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feat(bigquery): make BigQuery AutoCloseable with default no-op close method - #14434

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feat-bigquery-autocloseable
Sep 21, 2026
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feat-bigquery-autocloseable

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Extend AutoCloseable on BigQuery with a default no-op close() method to allow deterministic resource management without breaking backwards compatibility.

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Code Review

This pull request updates the BigQuery interface to extend AutoCloseable and introduces a default close() method. The BigQueryImpl class implements this method to safely close the underlying BigQueryReadClient using a lock, and unit tests are added to verify its behavior, idempotency, and compatibility with try-with-resources. There are no review comments, and I have no feedback to provide.

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Code Review

This pull request updates the BigQuery interface to extend AutoCloseable and implements the close() method in BigQueryImpl to release the underlying BigQueryReadClient resources, along with corresponding unit tests. Feedback suggests refactoring the close() implementation to perform the blocking client close operation outside of the locked block, thereby reducing lock contention and avoiding potential deadlocks.

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Code Review

This pull request updates the BigQuery interface to extend AutoCloseable and implements the close() method in BigQueryImpl to clean up the underlying BigQueryReadClient. It also adds corresponding unit tests for idempotency and try-with-resources. The review feedback highlights a potential race condition where calling close() does not prevent subsequent operations from lazily recreating and leaking a new BigQueryReadClient instance, and suggests introducing a closed state flag to prevent this.

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Code Review

This pull request updates the BigQuery interface to extend AutoCloseable and implements the close() method in BigQueryImpl to release background resources, specifically the underlying BigQueryReadClient. It also adds corresponding unit tests to verify the behavior, idempotency, and integration with try-with-resources. There are no review comments, and the implementation looks solid with no additional feedback to provide.

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jinseopkim0 added this pull request to stack #14406 September 18, 2026 17:10
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jinseopkim0 marked this pull request as ready for review September 18, 2026 19:44
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jinseopkim0 requested review from a team as code owners September 18, 2026 19:44
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jinseopkim0 requested a review from lqiu96 September 18, 2026 19:44
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jinseopkim0 force-pushed the feat-bigquery-autocloseable branch from 3620968 to caed9e0 Compare September 18, 2026 21:09
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Code Review

This pull request updates the BigQuery interface to extend AutoCloseable and implements the close() method in BigQueryImpl to release cached BigQueryReadClient instances, along with comprehensive unit tests. The feedback recommends declaring the new 'closed' flag as transient and volatile to ensure thread safety and correct behavior during serialization.

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Code Review

This pull request updates the BigQuery interface to extend AutoCloseable and implements the close() method in BigQueryImpl to properly release underlying background resources, specifically closing all cached BigQueryReadClient instances. It also introduces state checks to throw an IllegalStateException if clients are requested after the service has been closed, and adds comprehensive unit tests to verify this behavior. No review comments were provided, and the implementation looks solid with no additional feedback.

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jinseopkim0 force-pushed the feat-bigquery-autocloseable branch from ad69ec7 to ca6ba1b Compare September 18, 2026 21:58
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jinseopkim0 force-pushed the feat-bigquery-autocloseable branch from ca6ba1b to b53dc85 Compare September 18, 2026 22:17
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jinseopkim0 requested a review from lqiu96 September 18, 2026 22:25

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LGTM. Before merging, can you double check that this doesn't incur any weird or edge case behavioral breaking change?

I think source-wise we should be fine given that we cover the interface case with a default close method.

Base automatically changed from feat-bigquery-arrow-benchmark to main September 21, 2026 22:24
@jinseopkim0
jinseopkim0 force-pushed the feat-bigquery-autocloseable branch from 861ba4b to 8aca4dc Compare September 21, 2026 22:24
@jinseopkim0
jinseopkim0 merged commit 00bf3de into main Sep 21, 2026
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jinseopkim0 deleted the feat-bigquery-autocloseable branch September 21, 2026 23:38
blakeli0 pushed a commit that referenced this pull request Sep 23, 2026
🤖 I have created a release *beep* *boop*
---


<details><summary>1.92.0</summary>

##
[1.92.0](v1.91.0...v1.92.0)
(2026-09-23)


### Features

* **bigquery-jdbc:** add `EnableTimestampPicos` connection property and
its plumbing
([#14284](#14284))
([b4aa5ac](b4aa5ac))
* **bigquery-jdbc:** implement picosecond temporal math and formatting
engine
([#14286](#14286))
([2a9612a](2a9612a))
* **bigquery-jdbc:** support picosecond in REST JSON path and nested
types
([#14334](#14334))
([15ffe4a](15ffe4a))
* **bigquery-jdbc:** support picosecond in `PreparedStatement`
parameters and batching
([#14373](#14373))
([c1aac66](c1aac66))
* **bigquery-jdbc:** support picosecond timestamp in `ResultSetMetaData`
and `DatabaseMetaData`
([#14358](#14358))
([43acdd3](43acdd3))
* **bigquery-jdbc:** support picosecond timestamps in Arrow Storage Read
API and nested types
([#14332](#14332))
([b5d9aca](b5d9aca))
* **bigquery-jdbc:** support qualified project delimiter in
`DefaultDataset` property
([#14240](#14240))
([6e8d6c8](6e8d6c8))
* **bigquery:** accelerate row-based query() with Arrow wire format
([#14405](#14405))
([8d12a8f](8d12a8f))
* **bigquery:** add ArrowDeserializer helper utility
([#13943](#13943))
([d9a298b](d9a298b))
* **bigquery:** add ArrowQueryPageFetcher for Arrow query result
pagination
([#14404](#14404))
([615409f](615409f))
* **bigquery:** add ArrowQueryResult and ArrowQueryResultImpl for Arrow
result streaming
([#13944](#13944))
([a62fdf8](a62fdf8))
* **bigquery:** add Storage Read API slow-path fallback for row-based
query()
([#14409](#14409))
([26e568a](26e568a))
* **bigquery:** add zero-copy queryArrow API for Arrow VectorSchemaRoot
streaming
([#14402](#14402))
([b44ffe8](b44ffe8))
* **bigquery:** make BigQuery AutoCloseable with default no-op close
method
([#14434](#14434))
([00bf3de](00bf3de))
* **firestore:** add support for BSON types
([#13189](#13189))
([8a123d9](8a123d9))
* **gax:** add ApiCallContext and request-level settings overloads to
ResumableUploadCallable
([#14251](#14251))
([e8cbd42](e8cbd42))
* **gax:** add globalTimeout settings field to
ResumableUploadCallSettings
([#14253](#14253))
([438cda6](438cda6))
* **gax:** add resumable upload error classification and retry algorithm
([#14419](#14419))
([b70396d](b70396d))
* **gax:** add ResumableUploadCallable creation to Callables and
HttpJsonCallableFactory
([#14242](#14242))
([7de24de](7de24de))
* **gax:** implement baseline Callable and Future for resumable uploads
([#14241](#14241))
([5a54db9](5a54db9))
* **generator:** add model flag and allowlist parser for resumable
upload RPCs
([#14317](#14317))
([acc1856](acc1856))
* **generator:** emit resumable upload client surface
([#14319](#14319))
([a9fed00](a9fed00))
* **generator:** emit resumable upload settings and HttpJson upload stub
([#14321](#14321))
([c122474](c122474))
* **generator:** enable resumable upload generation for showcase
([#14325](#14325))
([f9ebd79](f9ebd79))
* **generator:** switch resumable upload specialized stubs to package
private
([#14471](#14471))
([0d4e875](0d4e875))
* **generator:** wire transport stub delegation to resumable upload
stubs
([#14322](#14322))
([cc4b980](cc4b980))
* **google/cloud/backupdr/v1beta:** add backupdr
([#14410](#14410))
([a4a47da](a4a47da))
* **google/cloud/networkservices/v1beta1:** add networkservices
([#14407](#14407))
([21c4955](21c4955))
* **pubsub:** add publish telemetry headers for publish attempt
observability
([#14338](#14338))
([c167ab8](c167ab8))
* **pubsub:** implement publish hedging to reduce tail latency
([#13735](#13735))
([b302615](b302615))
* **spanner:** Support dynamic TLS certificate and key rotation for
Spanner Omni
([#14456](#14456))
([ffc745c](ffc745c))
* **storage/control:** add delete folder recursive sample
([#13642](#13642))
([f4b1b46](f4b1b46))
* **storage/control:** add delete folder recursive sample
([#14397](#14397))
([2c01d55](2c01d55))


### Bug Fixes

* **auth:** restore transportFactory upon deserialization in
InternalAwsSecurityCredentialsSupplier
([#14340](#14340))
([beea42f](beea42f))
* **bigquery-jdbc:** ensure row ordering in PCNT IT
([#14330](#14330))
([a16f048](a16f048))
* **bigquery-jdbc:** fix htapi fallback due to permission logic
([#14418](#14418))
([21e6dc8](21e6dc8))
* **bigquery-jdbc:** fix Timestamp assertions
([#14290](#14290))
([533ba14](533ba14))
* **bigquery-jdbc:** handle null parameters in Storage Write API bulk
inserts
([#14270](#14270))
([dd2c41a](dd2c41a)),
refs
[#14066](#14066)
* **bigquery-jdbc:** handle SQL NULLs in ResultSet primitive getters
([#14383](#14383))
([8e464fe](8e464fe)),
refs
[#14371](#14371)
* **bigquery:** default Arrow pagination stream location to US instead
of global
([#14458](#14458))
([2775eb1](2775eb1))
* **bigquery:** preserve page token and paginate correctly in Arrow
query when maxResults is set
([#14469](#14469))
([f5601f4](f5601f4))
* **bigquery:** use first page row count for Arrow query pagination
offset
([#14466](#14466))
([9d10dd0](9d10dd0))
* **bigtable:** don't notify config listeners while holding the manager
lock
([#14294](#14294))
([4426ccd](4426ccd))
* **bigtable:** fall back to classic path when per-RPC CallCredentials
are set on session path
([#14477](#14477))
([57bacb0](57bacb0))
* **bigtable:** fix abnormal session closures and scale-up in session
pool
([#14431](#14431))
([6361ecd](6361ecd))
* **biqguery:** fix undeclared QueryParameter wiring in QueryStatistics
([#14401](#14401))
([64cf1d3](64cf1d3))
* **bom:** restore google-cloud-spanner-jdbc to libraries-bom
([#14362](#14362))
([bc7be5e](bc7be5e)),
refs
[#14347](#14347)
* **spanner:** honor maxAttempts and totalTimeout in streaming resume
loop
([#14370](#14370))
([305f47d](305f47d))
* **spanner:** only set snapshot isolation read timestamp for SI or
optimistic txns in CloudClientExecutor
([#14346](#14346))
([54c0d0f](54c0d0f))
* **spanner:** prevent statement cancellation race in
AbstractBaseUnitOfWork
([#14283](#14283))
([d9a8eef](d9a8eef))
* **spanner:** re-enable ITInstanceAdminTest on cloud-devel and
cloud-staging
([#14281](#14281))
([89a8268](89a8268))


### Performance Improvements

* **spanner:** stop re-parsing the request id on every RPC
([#14353](#14353))
([46108f4](46108f4))


### Documentation

* Add a Http/Json Post-Quantum Cryptography Guide
([#13963](#13963))
([fcc65b0](fcc65b0))
* **bigquery:** add QueryArrow code sample and document JDK 17+ JVM
requirements
([#14437](#14437))
([bd363f6](bd363f6))
</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>
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