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From "Sam Tunnicliffe (JIRA)" <>
Subject [jira] [Updated] (CASSANDRA-14244) Some tests in read_repair_test are flakey
Date Wed, 21 Feb 2018 00:29:10 GMT


Sam Tunnicliffe updated CASSANDRA-14244:
    Status: Patch Available  (was: Open)

DTest PR for this here:
One additional change I made, aside from setting the table options, was to disable dynamic
snitch as this could also cause a coordinator to direct a read command to another replicwhen
it could execute it itself.

CI is running against that dtest branch and I haven't seen a failure in over 50 runs locally

> Some tests in read_repair_test are flakey
> -----------------------------------------
>                 Key: CASSANDRA-14244
>                 URL:
>             Project: Cassandra
>          Issue Type: Test
>          Components: Testing
>            Reporter: Sam Tunnicliffe
>            Assignee: Sam Tunnicliffe
>            Priority: Major
>              Labels: dtest
> Since being refactored for CASSANDRA-14134, {{test_alter_rf_and_run_read_repair}} and
{{test_read_repair_chance}} in {{read_repair_test.TestReadRepair}} are flakey and regularly
fail on all branches. The problem is that the inital setup of these two tests doesn't explicitly
set the {{read_repair_chance}} or {{dclocal_read_repair_chance}} properties on the test table.
As a consequence, read repairs are sometimes probabilistically triggered and query results
don't match the expectations.

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