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We only add enableMajorityReadConcern to the command line arguments if it is set to true in the TestData. This means that mongods started test fixtures do not respect TestData.enableMajorityReadConcern="false". Passthroughs are unaffected. Instead of checking whether jsTest.options().enableMajorityReadConcern is true, we should check that it is not equal to undefined. We should also add a test to ensure that if we set TestData.enableMajorityReadConcern, then the server reports that it does not support committed reads.

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xgen-internal-githook commented on Sat, 17 Nov 2018 01:53:41 +0000: Author: {'name': 'Tess Avitabile', 'email': 'tess.avitabile@mongodb.com', 'username': 'tessavitabile'} Message: SERVER-38055 Mongod servers started through the shell must respect TestData.enableMajorityReadConcern Branch: tongo https://github.com/10gen/mongo-enterprise-modules/commit/696f35ecb5a60c47c2fbb704124ab124a16956cd xgen-internal-githook commented on Fri, 16 Nov 2018 22:25:49 +0000: Author: {'name': 'Tess Avitabile', 'email': 'tess.avitabile@mongodb.com', 'username': 'tessavitabile'} Message: SERVER-38055 Mongod servers started through the shell must respect TestData.enableMajorityReadConcern (cherry picked from commit a058fc68c52fcc86a4c612c0093a566ea05e853d) Branch: v3.6 https://github.com/mongodb/mongo/commit/d98a60da0ed7757ffe5f56dda2d94b2265273677 xgen-internal-githook commented on Fri, 16 Nov 2018 22:25:02 +0000: Author: {'name': 'Tess Avitabile', 'email': 'tess.avitabile@mongodb.com', 'username': 'tessavitabile'} Message: SERVER-38055 Mongod servers started through the shell must respect TestData.enableMajorityReadConcern (cherry picked from commit a058fc68c52fcc86a4c612c0093a566ea05e853d) Branch: v4.0 https://github.com/mongodb/mongo/commit/48d8edbb70092231c0f7c6c4c59af5c6e38a9781 xgen-internal-githook commented on Wed, 14 Nov 2018 18:05:37 +0000: Author: {'name': 'Tess Avitabile', 'email': 'tess.avitabile@mongodb.com', 'username': 'tessavitabile'} Message: SERVER-38055 Mongod servers started through the shell must respect TestData.enableMajorityReadConcern Branch: master https://github.com/10gen/mongo-enterprise-modules/commit/696f35ecb5a60c47c2fbb704124ab124a16956cd xgen-internal-githook commented on Wed, 14 Nov 2018 18:05:32 +0000: Author: {'name': 'Tess Avitabile', 'email': 'tess.avitabile@mongodb.com', 'username': 'tessavitabile'} Message: SERVER-38055 Mongod servers started through the shell must respect TestData.enableMajorityReadConcern Branch: master https://github.com/mongodb/mongo/commit/a058fc68c52fcc86a4c612c0093a566ea05e853d

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