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The unsplittable_collections_on_random_shard_jscore_txns suite is testing transactions with unsplittable collections residing on arbitrary shards: the mongos is choosing a random dataShard before forwarding the createCollection request. This feature is nevertheless incompatible with tests that include the creation of unsplittable collections within the scope of a transaction, since such a request can only be served by a primary shard. Tests such as concurrent_drops_and_creates.js should not be executed under the suite.

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xgen-internal-githook commented on Tue, 17 Mar 2026 20:16:12 +0000: Author: {'name': 'ppolato', 'email': '82828243+ppolato@users.noreply.github.com', 'username': 'ppolato'} Message: SERVER-88719 Exclude concurrent_drops_and_creates.js from the unsplittable_collections_on_random_shard_jscore_txns suite (#20713) GitOrigin-RevId: d8623eb989cc31786295038217976e5cff0b56a3 Branch: v8.0.20-hotfix https://github.com/mongodb/mongo/commit/4f88ececc4081fbe9a6423ae95e3f08339ff2d36 xgen-internal-githook commented on Wed, 23 Apr 2025 14:56:29 +0000: Author: {'name': 'ppolato', 'email': '82828243+ppolato@users.noreply.github.com', 'username': 'ppolato'} Message: SERVER-88719 Exclude concurrent_drops_and_creates.js from the unsplittable_collections_on_random_shard_jscore_txns suite (#20713) GitOrigin-RevId: d8623eb989cc31786295038217976e5cff0b56a3 Branch: v8.0.7-hotfix https://github.com/mongodb/mongo/commit/46506706a97a97f4894e6df975ecfc5a1d5f0f75 xgen-internal-githook commented on Thu, 4 Apr 2024 00:46:38 +0000: Author: {'name': 'ppolato', 'email': '82828243+ppolato@users.noreply.github.com', 'username': 'ppolato'} Message: SERVER-88719 Exclude concurrent_drops_and_creates.js from the unsplittable_collections_on_random_shard_jscore_txns suite (#20713) (cherry picked from commit 8067e44aaa294f8a49752363c226dbc1d2b7bd4b) GitOrigin-RevId: d8623eb989cc31786295038217976e5cff0b56a3 Branch: v8.0 https://github.com/mongodb/mongo/commit/49fcec901ea218c049e1d40ee2526aae10853ae2 xgen-internal-githook commented on Wed, 3 Apr 2024 16:05:39 +0000: Author: {'name': 'ppolato', 'email': '82828243+ppolato@users.noreply.github.com', 'username': 'ppolato'} Message: SERVER-88719 Exclude concurrent_drops_and_creates.js from the unsplittable_collections_on_random_shard_jscore_txns suite (#20713) GitOrigin-RevId: 8067e44aaa294f8a49752363c226dbc1d2b7bd4b Branch: master https://github.com/mongodb/mongo/commit/e6932f14a5a4a953c30d41b76cdc568833d51b3c

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