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428fadb7e9
Three tests in the main regression test suite are proving to not be portable across multiple runs on a deployed cluster as stats of pg_stat_io are reset. Problems happen for tests on: - Writes of WAL in the init context, when creating a WAL segment. - Syncs of WAL in the init context, when creating a WAL segment. - Reads of WAL in the normal context, requiring a WAL record to be read. For a `make check`, this could rely on the checkpoint record read by the startup process when starting the cluster, something that is not going to work for a deployed node. Two of the three tests are moved to the recovery TAP test 029_stats_restart, where we already check the consistency of stats data. The test for syncs is dropped as TAP can run with fsync=off. The other two are checked with some data from a freshly-initialized cluster. Per discussion with Tom Lane, Bertrand Drouvot and Nazir Bilal Yavuz. Discussion: https://postgr.es/m/915687.1738780322@sss.pgh.pa.us |
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