diff --git a/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/constraints/Constraint.java b/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/constraints/Constraint.java
index 338a0f3..5819fb3 100644
--- a/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/constraints/Constraint.java
+++ b/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/constraints/Constraint.java
@@ -45,6 +45,6 @@
 
     @Override
     public String toString() {
-        return lValue + " in " + rValue;
+        return lValue + "=" + rValue;
     }
 }
diff --git a/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/constraints/expressions/ConstantExpression.java b/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/constraints/expressions/ConstantExpression.java
index 2bf3643..5d3a777 100644
--- a/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/constraints/expressions/ConstantExpression.java
+++ b/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/constraints/expressions/ConstantExpression.java
@@ -44,6 +44,6 @@
 
     @Override
     protected void toString(StringBuilder buffer) {
-        buffer.append(getTag()).append('[').append(value).append(':').append(value.getClass().getName()).append(']');
+        buffer.append(value);
     }
 }
diff --git a/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/job/JobSpecification.java b/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/job/JobSpecification.java
index 2c51d3d..8165e49 100644
--- a/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/job/JobSpecification.java
+++ b/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/job/JobSpecification.java
@@ -354,16 +354,14 @@
             if (inputs != null && !inputs.isEmpty()) {
                 buffer.append("   Inputs:\n");
                 for (IConnectorDescriptor c : inputs) {
-                    buffer.append("      ").append(c.getConnectorId().getId()).append(" : ").append(c.toString())
-                            .append("\n");
+                    buffer.append("      ").append(c.getConnectorId().getId()).append(" : ").append(c).append("\n");
                 }
             }
             List<IConnectorDescriptor> outputs = opOutputMap.get(key);
             if (outputs != null && !outputs.isEmpty()) {
                 buffer.append("   Outputs:\n");
                 for (IConnectorDescriptor c : outputs) {
-                    buffer.append("      ").append(c.getConnectorId().getId()).append(" : ").append(c.toString())
-                            .append("\n");
+                    buffer.append("      ").append(c.getConnectorId().getId()).append(" : ").append(c).append("\n");
                 }
             }
         });