wait for consumer metadata report finish (#239)

diff --git a/dubbo-samples-metadata-report/dubbo-samples-metadata-report-configcenter/src/test/java/org/apache/dubbo/samples/metadatareport/configcenter/MetadataIT.java b/dubbo-samples-metadata-report/dubbo-samples-metadata-report-configcenter/src/test/java/org/apache/dubbo/samples/metadatareport/configcenter/MetadataIT.java
index a706ffa..3dc2078 100644
--- a/dubbo-samples-metadata-report/dubbo-samples-metadata-report-configcenter/src/test/java/org/apache/dubbo/samples/metadatareport/configcenter/MetadataIT.java
+++ b/dubbo-samples-metadata-report/dubbo-samples-metadata-report-configcenter/src/test/java/org/apache/dubbo/samples/metadatareport/configcenter/MetadataIT.java
@@ -146,6 +146,9 @@
      */
     @Test
     public void testConsumerMetadata() throws Exception {
+        //wait for consumer metadata report finish
+        Thread.sleep(1000);
+
         String result = ZKTools.getMetadata("/dubbo", AnnotationService.class.getName(), "1.1.1", "d-test",
                 CommonConstants.CONSUMER_SIDE, "metadatareport-configcenter-consumer");
         Gson gson = new Gson();
diff --git a/dubbo-samples-metadata-report/dubbo-samples-metadata-report-local-annotation/src/test/java/org/apache/dubbo/samples/metadatareport/local/annotation/MetadataIT.java b/dubbo-samples-metadata-report/dubbo-samples-metadata-report-local-annotation/src/test/java/org/apache/dubbo/samples/metadatareport/local/annotation/MetadataIT.java
index 7d8a5e1..08a1f80 100644
--- a/dubbo-samples-metadata-report/dubbo-samples-metadata-report-local-annotation/src/test/java/org/apache/dubbo/samples/metadatareport/local/annotation/MetadataIT.java
+++ b/dubbo-samples-metadata-report/dubbo-samples-metadata-report-local-annotation/src/test/java/org/apache/dubbo/samples/metadatareport/local/annotation/MetadataIT.java
@@ -141,6 +141,9 @@
      */
     @Test
     public void testConsumerMetadata() throws Exception {
+        //wait for consumer metadata report finish
+        Thread.sleep(1000);
+
         String result = ZkUtil.getMetadata("/dubbo", AnnotationService.class.getName(), "1.1.8", "d-test",
                 CommonConstants.CONSUMER_SIDE, "metadatareport-local-annotation-consumer");
         Gson gson = new Gson();
diff --git a/dubbo-samples-metadata-report/dubbo-samples-metadata-report-local-properties/src/test/java/org/apache/dubbo/samples/metadatareport/local/properties/MetadataIT.java b/dubbo-samples-metadata-report/dubbo-samples-metadata-report-local-properties/src/test/java/org/apache/dubbo/samples/metadatareport/local/properties/MetadataIT.java
index 0f9fac6..2f69ff3 100644
--- a/dubbo-samples-metadata-report/dubbo-samples-metadata-report-local-properties/src/test/java/org/apache/dubbo/samples/metadatareport/local/properties/MetadataIT.java
+++ b/dubbo-samples-metadata-report/dubbo-samples-metadata-report-local-properties/src/test/java/org/apache/dubbo/samples/metadatareport/local/properties/MetadataIT.java
@@ -131,6 +131,9 @@
      */
     @Test
     public void testConsumerMetadata() throws Exception {
+        //wait for consumer metadata report finish
+        Thread.sleep(1000);
+
         String result = ZkUtil.getMetadata("/dubbo", DemoService.class.getName(), CommonConstants.CONSUMER_SIDE,
                 "metadatareport-local-properties-consumer");
         Gson gson = new Gson();