STAR-843: Update dtests for ULID based generation ID

(cherry picked from commit fd2ebac)

scrub_test.py

@@ -171,23 +171,25 @@ def standalonescrub(self, table, *indexes, acceptable_errors=None):
             self.launch_standalone_scrub(KEYSPACE, '{}.{}'.format(table, index))
         return self.get_sstables(table, indexes)
 
-    def increment_generation_by(self, sstable, generation_increment):
+    def get_latest_generation(self, sstables):
         """
-        Set the generation number for an sstable file name
+        Get the latest generation ID of the provided sstables
         """
-        return re.sub('(\d(?!\d))\-', lambda x: str(int(x.group(1)) + generation_increment) + '-', sstable)
+        latest_gen = None
+        for table_or_index, table_sstables in list(sstables.items()):
+            gen = max(parse.search('{}-{generation}-{}.{}', s).named['generation'] for s in table_sstables)
+            latest_gen = gen if latest_gen is None else max([gen, latest_gen])
+        return latest_gen
 
-    def increase_sstable_generations(self, sstables):
+    def get_earliest_generation(self, sstables):
         """
-        After finding the number of existing sstables, increase all of the
-        generations by that amount.
+        Get the earliest generation ID of the provided sstables
         """
+        earliest_gen = None
         for table_or_index, table_sstables in list(sstables.items()):
-            increment_by = len(set(parse.search('{}-{increment_by}-{suffix}.{file_extention}', s).named['increment_by'] for s in table_sstables))
-            sstables[table_or_index] = [self.increment_generation_by(s, increment_by) for s in table_sstables]
-
-        logger.debug('sstables after increment {}'.format(str(sstables)))
-
+            gen = min(parse.search('{}-{generation}-{}.{}', s).named['generation'] for s in table_sstables)
+            earliest_gen = gen if earliest_gen is None else min([gen, earliest_gen])
+        return earliest_gen
 
 @since('2.2')
 class TestScrubIndexes(TestHelper):
@@ -240,16 +242,15 @@ def test_scrub_static_table(self):
         initial_sstables = self.flush('users', 'gender_idx', 'state_idx', 'birth_year_idx')
         scrubbed_sstables = self.scrub('users', 'gender_idx', 'state_idx', 'birth_year_idx')
 
-        self.increase_sstable_generations(initial_sstables)
-        assert initial_sstables == scrubbed_sstables
+        assert self.get_latest_generation(initial_sstables) < self.get_earliest_generation(scrubbed_sstables)
 
         users = self.query_users(session)
         assert initial_users == users
 
         # Scrub and check sstables and data again
+        initial_sstables = scrubbed_sstables
         scrubbed_sstables = self.scrub('users', 'gender_idx', 'state_idx', 'birth_year_idx')
-        self.increase_sstable_generations(initial_sstables)
-        assert initial_sstables == scrubbed_sstables
+        assert self.get_latest_generation(initial_sstables) < self.get_earliest_generation(scrubbed_sstables)
 
         users = self.query_users(session)
         assert initial_users == users
@@ -281,8 +282,7 @@ def test_standalone_scrub(self):
         cluster.stop()
 
         scrubbed_sstables = self.standalonescrub('users', 'gender_idx', 'state_idx', 'birth_year_idx')
-        self.increase_sstable_generations(initial_sstables)
-        assert initial_sstables == scrubbed_sstables
+        assert self.get_latest_generation(initial_sstables) < self.get_earliest_generation(scrubbed_sstables)
 
         cluster.start()
         session = self.patient_cql_connection(node1)
@@ -315,16 +315,14 @@ def test_scrub_collections_table(self):
         initial_sstables = self.flush('users', 'user_uuids_idx')
         scrubbed_sstables = self.scrub('users', 'user_uuids_idx')
 
-        self.increase_sstable_generations(initial_sstables)
-        assert initial_sstables == scrubbed_sstables
+        assert self.get_latest_generation(initial_sstables) < self.get_earliest_generation(scrubbed_sstables)
 
         users = list(session.execute(("SELECT * from users where uuids contains {some_uuid}").format(some_uuid=_id)))
         assert initial_users == users
 
+        initial_sstables = scrubbed_sstables
         scrubbed_sstables = self.scrub('users', 'user_uuids_idx')
-
-        self.increase_sstable_generations(initial_sstables)
-        assert initial_sstables == scrubbed_sstables
+        assert self.get_latest_generation(initial_sstables) < self.get_earliest_generation(scrubbed_sstables)
 
         users = list(session.execute(("SELECT * from users where uuids contains {some_uuid}").format(some_uuid=_id)))
 
@@ -377,16 +375,15 @@ def test_nodetool_scrub(self):
         initial_sstables = self.flush('users')
         scrubbed_sstables = self.scrub('users')
 
-        self.increase_sstable_generations(initial_sstables)
-        assert initial_sstables == scrubbed_sstables
+        assert self.get_latest_generation(initial_sstables) < self.get_earliest_generation(scrubbed_sstables)
 
         users = self.query_users(session)
         assert initial_users == users
 
         # Scrub and check sstables and data again
+        initial_sstables = scrubbed_sstables
         scrubbed_sstables = self.scrub('users')
-        self.increase_sstable_generations(initial_sstables)
-        assert initial_sstables == scrubbed_sstables
+        assert self.get_latest_generation(initial_sstables) < self.get_earliest_generation(scrubbed_sstables)
 
         users = self.query_users(session)
         assert initial_users == users
@@ -418,8 +415,7 @@ def test_standalone_scrub(self):
         cluster.stop()
 
         scrubbed_sstables = self.standalonescrub('users')
-        self.increase_sstable_generations(initial_sstables)
-        assert initial_sstables == scrubbed_sstables
+        assert self.get_latest_generation(initial_sstables) < self.get_earliest_generation(scrubbed_sstables)
 
         cluster.start()
         session = self.patient_cql_connection(node1)
@@ -447,8 +443,7 @@ def test_standalone_scrub_essential_files_only(self):
         self.delete_non_essential_sstable_files('users')
 
         scrubbed_sstables = self.standalonescrub(table='users', acceptable_errors=["WARN.*Could not recreate or deserialize existing bloom filter, continuing with a pass-through bloom filter but this will significantly impact reads performance"])
-        self.increase_sstable_generations(initial_sstables)
-        assert initial_sstables == scrubbed_sstables
+        assert self.get_latest_generation(initial_sstables) < self.get_earliest_generation(scrubbed_sstables)
 
         cluster.start()
         session = self.patient_cql_connection(node1)