Fix upgrade tests (#7413)

Adding upgrade_basic_before_non_mixed.sql file because while
upgrade_basic_after_non_mixed exist, its before variation didn't exist
as we don't have any "before" steps. However, run_test.py assumes that
all "after" files do have a "before" variation as well. So this PR adds
an empty upgrade_basic_before_non_mixed.sql file.

Also, given that we don't have such a version called as 12.1devel
anymore, change it to 12.1.1.

And finally, let CI skip testing flakyness for upgrade tests both
because it's quite hard to get flaky-test-detection job working for
upgrade tests and also because in the end it is not much useful to test
upgrade tests against flakyness.

.github/workflows/build_and_test.yml

@@ -471,14 +471,30 @@ jobs:
       run: |-
         detected_changes=$(git diff origin/main... --name-only --diff-filter=AM | (grep 'src/test/regress/sql/.*\.sql\|src/test/regress/spec/.*\.spec\|src/test/regress/citus_tests/test/test_.*\.py' || true))
         tests=${detected_changes}
-        if [ -z "$tests" ]; then
+
-            echo "No test found."
+        # split the tests to be skipped --today we only skip upgrade tests
+        skipped_tests=""
+        not_skipped_tests=""
+        for test in $tests; do
+            if [[ $test =~ ^src/test/regress/sql/upgrade_ ]]; then
+                skipped_tests="$skipped_tests $test"
             else
-          echo "Detected tests " $tests
+                not_skipped_tests="$not_skipped_tests $test"
+            fi
+        done
+
+        if [ ! -z "$skipped_tests" ]; then
+            echo "Skipped tests " $skipped_tests
+        fi
+
+        if [ -z "$not_skipped_tests" ]; then
+            echo "Not detected any tests that flaky test detection should run"
+        else
+            echo "Detected tests " $not_skipped_tests
         fi
 
         echo 'tests<<EOF' >> $GITHUB_OUTPUT
-        echo "$tests" >> "$GITHUB_OUTPUT"
+        echo "$not_skipped_tests" >> "$GITHUB_OUTPUT"
         echo 'EOF' >> $GITHUB_OUTPUT
   test-flakyness:
     if: ${{ needs.test-flakyness-pre.outputs.tests != ''}}

src/test/regress/before_citus_upgrade_coord_schedule

@@ -1,5 +1,5 @@
 # this schedule is to be run on only coordinators
 
-test: upgrade_basic_before
+test: upgrade_basic_before upgrade_basic_before_non_mixed
 test: upgrade_pg_dist_cleanup_before
 test: upgrade_post_11_before

src/test/regress/before_pg_upgrade_schedule

@@ -1,5 +1,5 @@
 # The basic tests runs analyze which depends on shard numbers
-test: multi_test_helpers multi_test_helpers_superuser
+test: multi_test_helpers multi_test_helpers_superuser upgrade_basic_before_non_mixed
 test: multi_test_catalog_views
 test: upgrade_basic_before
 test: upgrade_ref2ref_before

src/test/regress/citus_tests/common.py

@@ -92,7 +92,7 @@ PG_MAJOR_VERSION = get_pg_major_version()
 OLDEST_SUPPORTED_CITUS_VERSION_MATRIX = {
     14: "10.2.0",
     15: "11.1.5",
-    16: "12.1devel",
+    16: "12.1.1",
 }
 
 OLDEST_SUPPORTED_CITUS_VERSION = OLDEST_SUPPORTED_CITUS_VERSION_MATRIX[PG_MAJOR_VERSION]