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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"ci: flaky tests","articleBody":"## Expected Behavior\r\nTest suite should pass against prod.\r\n\r\n## Actual Behavior\r\nWe see lots of different kinds of errors. Examples:\r\n - \"Transaction aborted. Database schema probably changed during transaction, retry may succeed.\" [link](https://app.circleci.com/pipelines/github/cloudspannerecosystem/python-spanner-sqlalchemy/217/workflows/473e8528-3cb2-4b01-afe2-5104c4d94af4/jobs/254)\r\n - Same as above except also with \"InvalidArgument: 400 Column x is not present in table some_table [at 1:29]\\nINSERT INTO some_table (id, x, y) VALUES (@a0, @a1, @a2)\\n\" [link](https://app.circleci.com/pipelines/github/cloudspannerecosystem/python-spanner-sqlalchemy/214/workflows/ac1ac712-3b9f-401a-831a-1ba2a59de214/jobs/250)\r\n - Migration tests seem to be passing but there is always an error \"Transaction is already committed\" [link](https://app.circleci.com/pipelines/github/cloudspannerecosystem/python-spanner-sqlalchemy/217/workflows/473e8528-3cb2-4b01-afe2-5104c4d94af4/jobs/254)\r\n - \"FailedPrecondition: 400 Duplicate name in schema: noncol_idx_test_nopk\" [link](https://app.circleci.com/pipelines/github/cloudspannerecosystem/python-spanner-sqlalchemy/217/workflows/473e8528-3cb2-4b01-afe2-5104c4d94af4/jobs/253)\r\n\r\n## Steps to Reproduce the Problem\r\n\r\n1. Create a PR and allow the CircleCI workflow to run.","author":{"url":"https://github.com/skuruppu","@type":"Person","name":"skuruppu"},"datePublished":"2021-05-20T10:24:21.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":2},"url":"https://github.com/72/python-spanner-sqlalchemy/issues/72"}