changefeedccl: enable verbose logs for a few schema change unit tests

We're seeing that some changefeed unit tests involving schema changes
are sometimes flaking when using a core changefeed. This patch enables
verbose logs that will provide more information about what the kv feed
is doing when it sees the schema change and when processors are moving
to draining.

Release note: None

pkg/ccl/changefeedccl/changefeed_test.go

@@ -1581,6 +1581,8 @@ func TestNoStopAfterNonTargetColumnDrop(t *testing.T) {
 	defer leaktest.AfterTest(t)()
 	defer log.Scope(t).Close(t)
 
+	require.NoError(t, log.SetVModule("kv_feed=2,changefeed_processors=2"))
+
 	testFn := func(t *testing.T, s TestServer, f cdctest.TestFeedFactory) {
 		sqlDB := sqlutils.MakeSQLRunner(s.DB)
 
@@ -1685,6 +1687,8 @@ func TestNoBackfillAfterNonTargetColumnDrop(t *testing.T) {
 	defer leaktest.AfterTest(t)()
 	defer log.Scope(t).Close(t)
 
+	require.NoError(t, log.SetVModule("kv_feed=2,changefeed_processors=2"))
+
 	testFn := func(t *testing.T, s TestServer, f cdctest.TestFeedFactory) {
 		sqlDB := sqlutils.MakeSQLRunner(s.DB)
 
@@ -1719,6 +1723,8 @@ func TestChangefeedColumnDropsWithFamilyAndNonFamilyTargets(t *testing.T) {
 	defer leaktest.AfterTest(t)()
 	defer log.Scope(t).Close(t)
 
+	require.NoError(t, log.SetVModule("kv_feed=2,changefeed_processors=2"))
+
 	testFn := func(t *testing.T, s TestServer, f cdctest.TestFeedFactory) {
 		sqlDB := sqlutils.MakeSQLRunner(s.DB)
 
@@ -1766,6 +1772,8 @@ func TestChangefeedColumnDropsOnMultipleFamiliesWithTheSameName(t *testing.T) {
 	defer leaktest.AfterTest(t)()
 	defer log.Scope(t).Close(t)
 
+	require.NoError(t, log.SetVModule("kv_feed=2,changefeed_processors=2"))
+
 	testFn := func(t *testing.T, s TestServer, f cdctest.TestFeedFactory) {
 		sqlDB := sqlutils.MakeSQLRunner(s.DB)
 
@@ -1813,6 +1821,8 @@ func TestChangefeedColumnDropsOnTheSameTableWithMultipleFamilies(t *testing.T) {
 	defer leaktest.AfterTest(t)()
 	defer log.Scope(t).Close(t)
 
+	require.NoError(t, log.SetVModule("kv_feed=2,changefeed_processors=2"))
+
 	testFn := func(t *testing.T, s TestServer, f cdctest.TestFeedFactory) {
 		sqlDB := sqlutils.MakeSQLRunner(s.DB)
 
@@ -1847,6 +1857,8 @@ func TestNoStopAfterNonTargetAddColumnWithBackfill(t *testing.T) {
 	defer leaktest.AfterTest(t)()
 	defer log.Scope(t).Close(t)
 
+	require.NoError(t, log.SetVModule("kv_feed=2,changefeed_processors=2"))
+
 	testFn := func(t *testing.T, s TestServer, f cdctest.TestFeedFactory) {
 		sqlDB := sqlutils.MakeSQLRunner(s.DB)
 
@@ -1940,6 +1952,8 @@ func TestChangefeedSchemaChangeNoBackfill(t *testing.T) {
 	defer log.Scope(t).Close(t)
 	skip.UnderRace(t, "takes >1 min under race")
 
+	require.NoError(t, log.SetVModule("kv_feed=2,changefeed_processors=2"))
+
 	testFn := func(t *testing.T, s TestServer, f cdctest.TestFeedFactory) {
 		sqlDB := sqlutils.MakeSQLRunner(s.DB)
 
@@ -2542,6 +2556,8 @@ func TestChangefeedSchemaChangeAllowBackfill_Legacy(t *testing.T) {
 	defer leaktest.AfterTest(t)()
 	defer log.Scope(t).Close(t)
 
+	require.NoError(t, log.SetVModule("kv_feed=2,changefeed_processors=2"))
+
 	testFn := func(t *testing.T, s TestServerWithSystem, f cdctest.TestFeedFactory) {
 		sqlDB := sqlutils.MakeSQLRunner(s.DB)
 
@@ -2736,6 +2752,8 @@ func TestChangefeedSchemaChangeAllowBackfill(t *testing.T) {
 	defer leaktest.AfterTest(t)()
 	defer log.Scope(t).Close(t)
 
+	require.NoError(t, log.SetVModule("kv_feed=2,changefeed_processors=2"))
+
 	testFn := func(t *testing.T, s TestServerWithSystem, f cdctest.TestFeedFactory) {
 		sqlDB := sqlutils.MakeSQLRunner(s.DB)
 
@@ -2893,6 +2911,8 @@ func TestChangefeedSchemaChangeBackfillScope(t *testing.T) {
 	defer leaktest.AfterTest(t)()
 	defer log.Scope(t).Close(t)
 
+	require.NoError(t, log.SetVModule("kv_feed=2,changefeed_processors=2"))
+
 	testFn := func(t *testing.T, s TestServerWithSystem, f cdctest.TestFeedFactory) {
 		sqlDB := sqlutils.MakeSQLRunner(s.DB)
 		usingLegacySchemaChanger := maybeDisableDeclarativeSchemaChangesForTest(t, sqlDB)
@@ -2955,6 +2975,8 @@ func TestChangefeedAfterSchemaChangeBackfill(t *testing.T) {
 	defer leaktest.AfterTest(t)()
 	defer log.Scope(t).Close(t)
 
+	require.NoError(t, log.SetVModule("kv_feed=2,changefeed_processors=2"))
+
 	testFn := func(t *testing.T, s TestServer, f cdctest.TestFeedFactory) {
 		sqlDB := sqlutils.MakeSQLRunner(s.DB)
 		sqlDB.Exec(t, `CREATE TABLE after_backfill (a INT PRIMARY KEY)`)
@@ -2985,6 +3007,8 @@ func TestChangefeedEachColumnFamily(t *testing.T) {
 	defer leaktest.AfterTest(t)()
 	defer log.Scope(t).Close(t)
 
+	require.NoError(t, log.SetVModule("kv_feed=2,changefeed_processors=2"))
+
 	testFn := func(t *testing.T, s TestServer, f cdctest.TestFeedFactory) {
 
 		sqlDB := sqlutils.MakeSQLRunner(s.DB)
@@ -3103,6 +3127,8 @@ func TestChangefeedSingleColumnFamilySchemaChanges(t *testing.T) {
 	defer leaktest.AfterTest(t)()
 	defer log.Scope(t).Close(t)
 
+	require.NoError(t, log.SetVModule("kv_feed=2,changefeed_processors=2"))
+
 	// requireErrorSoon times out after 30 seconds
 	skip.UnderStress(t)
 	skip.UnderRace(t)
@@ -3147,6 +3173,8 @@ func TestChangefeedEachColumnFamilySchemaChanges(t *testing.T) {
 	defer leaktest.AfterTest(t)()
 	defer log.Scope(t).Close(t)
 
+	require.NoError(t, log.SetVModule("kv_feed=2,changefeed_processors=2"))
+
 	testFn := func(t *testing.T, s TestServer, f cdctest.TestFeedFactory) {
 		sqlDB := sqlutils.MakeSQLRunner(s.DB)
 
@@ -8597,6 +8625,8 @@ func TestSchemachangeDoesNotBreakSinklessFeed(t *testing.T) {
 	defer leaktest.AfterTest(t)()
 	defer log.Scope(t).Close(t)
 
+	require.NoError(t, log.SetVModule("kv_feed=2,changefeed_processors=2"))
+
 	testFn := func(t *testing.T, s TestServer, f cdctest.TestFeedFactory) {
 		sqlDB := sqlutils.MakeSQLRunner(s.DB)