goiri commented on a change in pull request #3325:
URL: https://github.com/apache/hadoop/pull/3325#discussion_r700376659
##########
File path:
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-router/src/main/java/org/apache/hadoop/yarn/server/router/clientrm/FederationClientInterceptor.java
##########
@@ -628,18 +629,29 @@ public GetApplicationReportResponse getApplicationReport(
public GetApplicationsResponse getApplications(GetApplicationsRequest
request)
throws YarnException, IOException {
if (request == null) {
+ routerMetrics.incrMultipleAppsFailedRetrieved();
RouterServerUtil.logAndThrowException(
"Missing getApplications request.",
null);
}
+ long startTime = clock.getTime();
Map<SubClusterId, SubClusterInfo> subclusters =
federationFacade.getSubClusters(true);
ClientMethod remoteMethod = new ClientMethod("getApplications",
new Class[] {GetApplicationsRequest.class}, new Object[] {request});
- Map<SubClusterId, GetApplicationsResponse> applications =
- invokeConcurrent(subclusters.keySet(), remoteMethod,
- GetApplicationsResponse.class);
+ Map<SubClusterId, GetApplicationsResponse> applications;
+
+ try {
+ applications = invokeConcurrent(subclusters.keySet(), remoteMethod,
+ GetApplicationsResponse.class);
+ } catch (Exception ex) {
Review comment:
What is this exception?
##########
File path:
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-router/src/test/java/org/apache/hadoop/yarn/server/router/TestRouterMetrics.java
##########
@@ -279,6 +279,37 @@ public void testMulipleAppsReportFailed() {
metrics.getMultipleAppsFailedRetrieved());
}
+ /**
+ * This test validates the correctness of the metric: Retrieved
getClusterMetrics
+ * multiple times successfully.
+ */
+ @Test
+ public void testSucceededGetClusterMetrics() {
+ long totalGoodBefore = metrics.getNumSucceededGetClusterMetricsRetrieved();
+ goodSubCluster.getClusterMetrics(100);
+ Assert.assertEquals(totalGoodBefore + 1,
+ metrics.getNumSucceededGetClusterMetricsRetrieved());
+ Assert.assertEquals(100,
metrics.getLatencySucceededGetClusterMetricsRetrieved(),
+ 0);
Review comment:
What is the last 0?
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