xianjingfeng commented on code in PR #938:
URL: https://github.com/apache/incubator-uniffle/pull/938#discussion_r1230953453


##########
integration-test/common/src/test/java/org/apache/uniffle/test/ServletTest.java:
##########
@@ -107,15 +131,48 @@ public void testNodesServlet() throws Exception {
     serverList = response.getData();
     assertEquals(1, serverList.size());
     assertEquals(shuffleServer.getId(), serverList.get(0).get("id"));
+  }
 
-    content = TestUtils.httpGet(NODES_URL + "?status=DECOMMISSIONED");
-    response = objectMapper.readValue(content, new 
TypeReference<Response<List<HashMap<String, Object>>>>() {});
-    serverList = response.getData();
-    assertEquals(0, serverList.size());
-    content = TestUtils.httpGet(NODES_URL + "?status=ACTIVE");
-    response = objectMapper.readValue(content, new 
TypeReference<Response<List<HashMap<String, Object>>>>() {});
-    serverList = response.getData();
-    assertEquals(2, serverList.size());
+  @Test
+  public void testLostNodesServlet() throws IOException {
+    SimpleClusterManager clusterManager = (SimpleClusterManager) 
coordinatorServer.getClusterManager();
+    ShuffleServer shuffleServer3 = shuffleServers.get(2);
+    ShuffleServer shuffleServer4 = shuffleServers.get(3);
+    Map<String, ServerNode> servers = clusterManager.getServers();
+    
servers.get(shuffleServer3.getId()).setTimestamp(System.currentTimeMillis() - 
40000);
+    
servers.get(shuffleServer4.getId()).setTimestamp(System.currentTimeMillis() - 
40000);
+    clusterManager.nodesCheckTest();
+    List<String> expectShuffleIds = 
Arrays.asList(shuffleServer3.getId(),shuffleServer4.getId());
+    List<String> shuffleIds = new ArrayList<>();
+    Response<List<HashMap<String, Object>>> response = 
objectMapper.readValue(TestUtils.httpGet(LOSTNODES_URL),
+        new TypeReference<Response<List<HashMap<String, Object>>>>() {});
+    List<HashMap<String, Object>> serverList = response.getData();
+    for (HashMap<String, Object> stringObjectHashMap : serverList) {
+      String shuffleId = (String) stringObjectHashMap.get("id");
+      shuffleIds.add(shuffleId);
+    }
+    assertTrue(CollectionUtils.isEqualCollection(expectShuffleIds, 
shuffleIds));
+  }
+
+  @Test
+  public void testUnhealthyNodesServlet() {
+    ShuffleServer shuffleServer3 = shuffleServers.get(2);
+    ShuffleServer shuffleServer4 = shuffleServers.get(3);
+    shuffleServer3.markUnhealthy();
+    shuffleServer4.markUnhealthy();
+    List<String> expectShuffleIds = 
Arrays.asList(shuffleServer3.getId(),shuffleServer4.getId());
+    List<String> shuffleIds = new ArrayList<>();
+    Awaitility.await().atMost(30,TimeUnit.SECONDS).until(() -> {
+      Response<List<HashMap<String, Object>>> response = 
objectMapper.readValue(TestUtils.httpGet(UNHEALTHYNODES_URL), 
+          new TypeReference<Response<List<HashMap<String, Object>>>>() {});
+      List<HashMap<String, Object>> serverList = response.getData();
+      for (HashMap<String, Object> stringObjectHashMap : serverList) {
+        String shuffleId = (String) stringObjectHashMap.get("id");
+        shuffleIds.add(shuffleId);
+      }
+      return serverList.size() == 2;
+    });
+    assertTrue(CollectionUtils.isEqualCollection(expectShuffleIds,shuffleIds));

Review Comment:
   ```suggestion
       assertTrue(CollectionUtils.isEqualCollection(expectShuffleIds, 
shuffleIds));
   ```



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