diff --git a/asterixdb/asterix-app/src/main/java/org/apache/asterix/api/http/server/QueryServiceServlet.java b/asterixdb/asterix-app/src/main/java/org/apache/asterix/api/http/server/QueryServiceServlet.java
index dd03860..3d0858c 100644
--- a/asterixdb/asterix-app/src/main/java/org/apache/asterix/api/http/server/QueryServiceServlet.java
+++ b/asterixdb/asterix-app/src/main/java/org/apache/asterix/api/http/server/QueryServiceServlet.java
@@ -149,7 +149,8 @@
         REWRITTEN_EXPRESSION_TREE("rewritten-expression-tree"),
         LOGICAL_PLAN("logical-plan"),
         OPTIMIZED_LOGICAL_PLAN("optimized-logical-plan"),
-        JOB("job");
+        JOB("job"),
+        SIGNATURE("signature");
 
         private final String str;
 
@@ -212,6 +213,7 @@
         boolean logicalPlan;
         boolean optimizedLogicalPlan;
         boolean job;
+        boolean signature;
 
         @Override
         public String toString() {
@@ -233,6 +235,7 @@
                 on.put("logicalPlan", logicalPlan);
                 on.put("optimizedLogicalPlan", optimizedLogicalPlan);
                 on.put("job", job);
+                on.put("signature", signature);
                 return om.writer(new MinimalPrettyPrinter()).writeValueAsString(on);
             } catch (JsonProcessingException e) { // NOSONAR
                 LOGGER.debug("unexpected exception marshalling {} instance to json", getClass(), e);
@@ -311,7 +314,7 @@
             if (format.equals(HttpUtil.ContentType.APPLICATION_ADM)) {
                 return SessionConfig.OutputFormat.ADM;
             }
-            if (format.startsWith(HttpUtil.ContentType.APPLICATION_JSON)) {
+            if (isJsonFormat(format)) {
                 return Boolean.parseBoolean(getParameterValue(format, Attribute.LOSSLESS.str()))
                         ? SessionConfig.OutputFormat.LOSSLESS_JSON : SessionConfig.OutputFormat.CLEAN_JSON;
             }
@@ -350,8 +353,15 @@
         }
     }
 
-    private static void printSignature(PrintWriter pw) {
-        ResultUtil.printField(pw, ResultFields.SIGNATURE.str(), "*");
+    private static void printSignature(PrintWriter pw, RequestParameters param) {
+        if (param.signature) {
+            pw.print("\t\"");
+            pw.print(ResultFields.SIGNATURE.str());
+            pw.print("\": {\n");
+            pw.print("\t");
+            ResultUtil.printField(pw, "*", "*", false);
+            pw.print("\t},\n");
+        }
     }
 
     private static void printType(PrintWriter pw, SessionConfig sessionConfig) {
@@ -424,6 +434,7 @@
                 param.logicalPlan = getOptBoolean(jsonRequest, Parameter.LOGICAL_PLAN.str(), false);
                 param.optimizedLogicalPlan = getOptBoolean(jsonRequest, Parameter.OPTIMIZED_LOGICAL_PLAN.str(), false);
                 param.job = getOptBoolean(jsonRequest, Parameter.JOB.str(), false);
+                param.signature = getOptBoolean(jsonRequest, Parameter.SIGNATURE.str(), true);
             } catch (JsonParseException | JsonMappingException e) {
                 // if the JSON parsing fails, the statement is empty and we get an empty statement error
                 GlobalConfig.ASTERIX_LOGGER.log(Level.ERROR, e.getMessage(), e);
@@ -507,7 +518,7 @@
         sessionOutput.out().print("{\n");
         printRequestId(sessionOutput.out());
         printClientContextID(sessionOutput.out(), param);
-        printSignature(sessionOutput.out());
+        printSignature(sessionOutput.out(), param);
         printType(sessionOutput.out(), sessionConfig);
         long errorCount = 1; // so far we just return 1 error
         try {
@@ -622,4 +633,9 @@
         }
         pw.print(",\n");
     }
+
+    private static boolean isJsonFormat(String format) {
+        return format.startsWith(HttpUtil.ContentType.APPLICATION_JSON)
+                || format.equalsIgnoreCase(HttpUtil.ContentType.JSON);
+    }
 }
diff --git a/asterixdb/asterix-app/src/main/java/org/apache/asterix/app/message/ExecuteStatementRequestMessage.java b/asterixdb/asterix-app/src/main/java/org/apache/asterix/app/message/ExecuteStatementRequestMessage.java
index 8de3782..977bbe3 100644
--- a/asterixdb/asterix-app/src/main/java/org/apache/asterix/app/message/ExecuteStatementRequestMessage.java
+++ b/asterixdb/asterix-app/src/main/java/org/apache/asterix/app/message/ExecuteStatementRequestMessage.java
@@ -29,6 +29,7 @@
 import org.apache.asterix.api.http.server.ResultUtil;
 import org.apache.asterix.app.cc.CCExtensionManager;
 import org.apache.asterix.app.translator.RequestParameters;
+import org.apache.asterix.common.api.Duration;
 import org.apache.asterix.common.api.IClusterManagementWork;
 import org.apache.asterix.common.cluster.IClusterStateManager;
 import org.apache.asterix.common.config.GlobalConfig;
@@ -64,7 +65,7 @@
     private static final long serialVersionUID = 1L;
     private static final Logger LOGGER = LogManager.getLogger();
     //TODO: Make configurable: https://issues.apache.org/jira/browse/ASTERIXDB-2062
-    public static final long DEFAULT_NC_TIMEOUT_MILLIS = TimeUnit.MINUTES.toMillis(5);
+    public static final long DEFAULT_NC_TIMEOUT_MILLIS = TimeUnit.MILLISECONDS.toMillis(Long.MAX_VALUE);
     //TODO: Make configurable: https://issues.apache.org/jira/browse/ASTERIXDB-2063
     public static final long DEFAULT_QUERY_CANCELLATION_WAIT_MILLIS = TimeUnit.MINUTES.toMillis(1);
     private final String requestNodeId;
diff --git a/hyracks-fullstack/hyracks/hyracks-http/src/main/java/org/apache/hyracks/http/server/utils/HttpUtil.java b/hyracks-fullstack/hyracks/hyracks-http/src/main/java/org/apache/hyracks/http/server/utils/HttpUtil.java
index ffa4d4b..bdd312d 100644
--- a/hyracks-fullstack/hyracks/hyracks-http/src/main/java/org/apache/hyracks/http/server/utils/HttpUtil.java
+++ b/hyracks-fullstack/hyracks/hyracks-http/src/main/java/org/apache/hyracks/http/server/utils/HttpUtil.java
@@ -63,6 +63,7 @@
     public static class ContentType {
         public static final String APPLICATION_ADM = "application/x-adm";
         public static final String APPLICATION_JSON = "application/json";
+        public static final String JSON = "json";
         public static final String APPLICATION_X_WWW_FORM_URLENCODED = "application/x-www-form-urlencoded";
         public static final String CSV = "text/csv";
         public static final String IMG_PNG = "image/png";