[Cherry-pick] [6.8] Initialize dq_failure before use in send-to-error directive

pom.xml

@@ -19,7 +19,7 @@
 
   <groupId>io.cdap.wrangler</groupId>
   <artifactId>wrangler</artifactId>
-  <version>4.8.2</version>
+  <version>4.8.3-SNAPSHOT</version>
   <name>Wrangler</name>
   <packaging>pom</packaging>
   <description>An interactive tool for data cleansing and transformation.</description>

wrangler-core/src/main/java/io/cdap/directives/row/SendToErrorAndContinue.java

@@ -121,6 +121,8 @@ public List<Row> execute(List<Row> rows, ExecutorContext context)
             context.getTransientStore().increment(TransientVariableScope.LOCAL, "dq_failure", 1);
           }
           throw new ReportErrorAndProceed(message, 1);
+        } else if (context != null && !context.getTransientStore().getVariables().contains("dq_failure")) {
+            context.getTransientStore().set(TransientVariableScope.LOCAL, "dq_failure", 0L);
         }
       } catch (ELException e) {
         throw new DirectiveExecutionException(NAME, e.getMessage(), e);

wrangler-core/src/test/java/io/cdap/directives/row/SendToErrorAndContinueTest.java

@@ -107,4 +107,29 @@ public void testErrorConditionTrueAndContinueWithTransientVariable() throws Exce
     Assert.assertEquals(2, errors.size());
     Assert.assertEquals(3, results.size());
   }
+
+  @Test
+  public void testErrorConditionFalseAndContinueWithTransientVariable() throws Exception {
+    String[] directives = new String[] {
+            "parse-as-csv body , true",
+            "drop body",
+            "send-to-error-and-continue exp:{body_3 == 'xyzw'} 'invalid value'",
+            "send-to-error-and-continue exp:{body_4=='1000'} 'junk' ",
+            "send-to-error exp:{dq_failure >= 1} "
+    };
+
+    List<Row> rows = Arrays.asList(
+            new Row("body", "1020134.298,,1,2,2 "),
+            new Row("body", "1020134.298,,xx,1,3"),
+            new Row("body", "1020134.298,,4,1,4"),
+            new Row("body", "1020134.298,,4,2,5"),
+            new Row("body", "1020134.298,,1,2,1")
+    );
+
+    RecipePipeline pipeline = TestingRig.execute(directives);
+    List<Row> results = pipeline.execute(rows);
+    List<ErrorRecord> errors = pipeline.errors();
+    Assert.assertEquals(0, errors.size());
+    Assert.assertEquals(5, results.size());
+  }
 }