ttljob: make an error message slightly more helpful

The new message assures the user that the job will run again.

Release note: None

Author: rafiss

pkg/sql/ttl/ttljob/ttljob.go

@@ -94,7 +94,7 @@ func (t rowLevelTTLResumer) Resume(ctx context.Context, execCtx interface{}) (re
 		if modificationTime.After(aost) {
 			return pgerror.Newf(
 				pgcode.ObjectNotInPrerequisiteState,
-				"found a recent schema change on the table at %s, aborting",
+				"found a recent schema change on the table at %s, job will run at the next scheduled time",
 				modificationTime.Format(time.RFC3339),
 			)
 		}

pkg/sql/ttl/ttljob/ttljob_processor.go

@@ -447,7 +447,7 @@ func (t *ttlProcessor) runTTLOnQueryBounds(
 						}
 						if ttlSpec.PreDeleteChangeTableVersion || desc.GetVersion() != details.TableVersion {
 							return errors.Newf(
-								"table has had a schema change since the job has started at %s, aborting",
+								"table has had a schema change since the job has started at %s, job will run at the next scheduled time",
 								desc.GetModificationTime().GoTime().Format(time.RFC3339),
 							)
 						}

pkg/sql/ttl/ttljob/ttljob_test.go

@@ -318,12 +318,12 @@ INSERT INTO t (id, crdb_internal_expiration) VALUES (1, now() - '1 month'), (2,
 	}{
 		{
 			desc:             "schema change too recent to start TTL job",
-			expectedTTLError: "found a recent schema change on the table at .*, aborting",
+			expectedTTLError: "found a recent schema change on the table at .*, job will run at the next scheduled time",
 			aostDuration:     -48 * time.Hour,
 		},
 		{
 			desc:             "schema change during job",
-			expectedTTLError: "error during row deletion: table has had a schema change since the job has started at .*, aborting",
+			expectedTTLError: "error during row deletion: table has had a schema change since the job has started at .*, job will run at the next scheduled time",
 			aostDuration:     zeroDuration,
 			// We cannot use a schema change to change the version in this test as
 			// we overtook the job adoption method, which means schema changes get