fix(spanner): check for empty before delete (#4047) #4079
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spanner IT fails for `deleteAllById_doesNothingOnEmptyIds` test with error from Spanner: `INVALID_ARGUMENT: Failed to initialize transaction due to invalid mutation key.` **Trigger of this behavior change:** spanner activated multiplexed sessions by default in [googleapis/java-spanner#3996](googleapis/java-spanner#3996), which triggers this error. When issuing a write() with a Mutation that has an empty KeySet produces an exception in Multiplexed clients (see [pr](googleapis/java-spanner#4023)), but does a no-op in non-multiplexed ones. Unlike Regular session, multiplex session needs a valid mutation to generate a precommit token. Fixes #4046
diegomarquezp
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Aug 19, 2025
zhumin8
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🤖 I have created a release *beep* *boop* --- ## [3.9.8](v3.9.7...v3.9.8) (2025-08-19) ### Bug Fixes * **spanner:** check for empty before delete ([#4047](#4047)) ([#4079](#4079)) ([e0a2716](e0a2716)), closes [#4046](#4046) ### Dependencies * bump com.google.cloud:libraries-bom from 26.65.0 to 26.66.0 ([#4066](#4066)) ([e15f17a](e15f17a)) --- 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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Backport fix.
spanner IT fails for
deleteAllById_doesNothingOnEmptyIdstest with error from Spanner:INVALID_ARGUMENT: Failed to initialize transaction due to invalid mutation key.Trigger of this behavior change:
spanner activated multiplexed sessions by default in googleapis/java-spanner#3996, which triggers this error. When issuing a write() with a Mutation that has an empty KeySet produces an exception in Multiplexed clients (see pr), but does a no-op in non-multiplexed ones. Unlike Regular session, multiplex session needs a valid mutation to generate a precommit token.
Fixes #4046