Preserve distributed transactions on pooled connection reset#3019
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mdaigle merged 11 commits intodotnet:mainfrom Jan 15, 2025
Merged
Preserve distributed transactions on pooled connection reset#3019mdaigle merged 11 commits intodotnet:mainfrom
mdaigle merged 11 commits intodotnet:mainfrom
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mdaigle
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Codecov ReportAll modified and coverable lines are covered by tests ✅
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## main #3019 +/- ##
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+ Coverage 72.68% 72.70% +0.01%
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Files 283 283
Lines 58975 58976 +1
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+ Hits 42864 42876 +12
+ Misses 16111 16100 -11
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benrr101
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Dec 3, 2024
src/Microsoft.Data.SqlClient/netcore/src/Microsoft/Data/SqlClient/SqlInternalConnectionTds.cs
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...t.Data.SqlClient/tests/ManualTests/SQL/TransactionTest/DistributedTransactionTest.Windows.cs
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src/Microsoft.Data.SqlClient/netcore/src/Microsoft/Data/SqlClient/SqlInternalConnectionTds.cs
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mdaigle
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Dec 5, 2024
| @@ -1075,9 +1075,11 @@ private void ResetConnection() | |||
| // distributed transaction - otherwise don't reset! | |||
| if (Is2000) | |||
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Leaving Is2000 logic in place for now until we remove support for it. The fix will not apply to versions before 2000.
mdaigle
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Dec 6, 2024
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| [ConditionalFact(typeof(DataTestUtility), nameof(DataTestUtility.AreConnStringsSetup), Timeout = 10000)] | ||
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| public void Test_EnlistedTransactionPreservedWhilePooled() |
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Verified that these tests currently fail when run on main against an azure db.
paulmedynski
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Jan 15, 2025
cheenamalhotra
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Jan 15, 2025
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The current behavior only preserves transaction state for the root transaction. Enlisted connections that are reset will be placed in the transacted connection pool, but in some situations, will no longer participate in the transaction. The next connection to request the connection will expect it to be participating in the transaction, but actions on the connection will auto-commit.
This changes the reset logic to preserve transaction state for enlisted connections (part of a distributed transaction, but not root).