diff --git a/asterixdb/asterix-active/src/main/java/org/apache/asterix/active/ActiveSourceOperatorNodePushable.java b/asterixdb/asterix-active/src/main/java/org/apache/asterix/active/ActiveSourceOperatorNodePushable.java
index 1df9020..2f30df4 100644
--- a/asterixdb/asterix-active/src/main/java/org/apache/asterix/active/ActiveSourceOperatorNodePushable.java
+++ b/asterixdb/asterix-active/src/main/java/org/apache/asterix/active/ActiveSourceOperatorNodePushable.java
@@ -63,8 +63,10 @@
 
     @Override
     public final void stop() throws HyracksDataException, InterruptedException {
-        abort();
         synchronized (this) {
+            if (!done) {
+                abort();
+            }
             while (!done) {
                 wait();
             }
diff --git a/asterixdb/asterix-external-data/src/main/java/org/apache/asterix/external/api/IRecordReader.java b/asterixdb/asterix-external-data/src/main/java/org/apache/asterix/external/api/IRecordReader.java
index 08ffe18..9033814 100644
--- a/asterixdb/asterix-external-data/src/main/java/org/apache/asterix/external/api/IRecordReader.java
+++ b/asterixdb/asterix-external-data/src/main/java/org/apache/asterix/external/api/IRecordReader.java
@@ -77,4 +77,11 @@
     public default IFeedMarker getProgressReporter() {
         return null;
     }
+
+    /**
+     * @return JSON String containing ingestion stats
+     */
+    default String getStats() {
+        return null;
+    }
 }
diff --git a/asterixdb/asterix-external-data/src/main/java/org/apache/asterix/external/dataflow/FeedRecordDataFlowController.java b/asterixdb/asterix-external-data/src/main/java/org/apache/asterix/external/dataflow/FeedRecordDataFlowController.java
index 164ff68..f392139 100644
--- a/asterixdb/asterix-external-data/src/main/java/org/apache/asterix/external/dataflow/FeedRecordDataFlowController.java
+++ b/asterixdb/asterix-external-data/src/main/java/org/apache/asterix/external/dataflow/FeedRecordDataFlowController.java
@@ -40,6 +40,7 @@
 public class FeedRecordDataFlowController<T> extends AbstractFeedDataFlowController {
     public static final String INCOMING_RECORDS_COUNT_FIELD_NAME = "incoming-records-count";
     public static final String FAILED_AT_PARSER_RECORDS_COUNT_FIELD_NAME = "failed-at-parser-records-count";
+    public static final String READER_STATS_FIELD_NAME = "reader-stats";
 
     public enum State {
         CREATED,
@@ -257,7 +258,15 @@
 
     @Override
     public String getStats() {
-        return "{\"" + INCOMING_RECORDS_COUNT_FIELD_NAME + "\": " + incomingRecordsCount + ", \""
-                + FAILED_AT_PARSER_RECORDS_COUNT_FIELD_NAME + "\": " + failedRecordsCount + "}";
+        String readerStats = recordReader.getStats();
+        StringBuilder str = new StringBuilder();
+        str.append("{");
+        if (readerStats != null) {
+            str.append("\"").append(READER_STATS_FIELD_NAME).append("\":").append(readerStats).append(", ");
+        }
+        str.append("\"").append(INCOMING_RECORDS_COUNT_FIELD_NAME).append("\": ").append(incomingRecordsCount)
+                .append(", \"").append(FAILED_AT_PARSER_RECORDS_COUNT_FIELD_NAME).append("\": ")
+                .append(failedRecordsCount).append("}");
+        return str.toString();
     }
 }