virajjasani commented on code in PR #5349:
URL: https://github.com/apache/hadoop/pull/5349#discussion_r1096484078
##########
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestDataNodeMXBean.java:
##########
@@ -294,4 +297,107 @@ public void testDataNodeMXBeanSlowDisksEnabled() throws
Exception {
if (cluster != null) {cluster.shutdown();}
}
}
+
+ @Test
+ public void testDataNodeMXBeanLastHeartbeats() throws Exception {
+ Configuration conf = new Configuration();
+ try (MiniDFSCluster cluster = new MiniDFSCluster
+ .Builder(conf)
+ .nnTopology(MiniDFSNNTopology.simpleHATopology(2))
+ .numDataNodes(1)
+ .build()) {
+ cluster.waitActive();
+ cluster.transitionToActive(0);
+ cluster.transitionToStandby(1);
+
+ DataNode datanode = cluster.getDataNodes().get(0);
+
+ MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
+ ObjectName mxbeanName = new ObjectName(
+ "Hadoop:service=DataNode,name=DataNodeInfo");
+
+ // Verify and wait until one of the BP service actor identifies active
namenode as active
+ // and another as standby.
+ GenericTestUtils.waitFor(() -> {
+ List<Map<String, String>> bpServiceActorInfo =
datanode.getBPServiceActorInfoMap();
+ Map<String, String> bpServiceActorInfo1 = bpServiceActorInfo.get(0);
+ Map<String, String> bpServiceActorInfo2 = bpServiceActorInfo.get(1);
+ return (HAServiceProtocol.HAServiceState.ACTIVE.toString()
+ .equals(bpServiceActorInfo1.get("NamenodeHaState"))
+ && HAServiceProtocol.HAServiceState.STANDBY.toString()
+ .equals(bpServiceActorInfo2.get("NamenodeHaState")))
+ || (HAServiceProtocol.HAServiceState.ACTIVE.toString()
+ .equals(bpServiceActorInfo2.get("NamenodeHaState"))
+ && HAServiceProtocol.HAServiceState.STANDBY.toString()
+ .equals(bpServiceActorInfo1.get("NamenodeHaState")));
+ },
+ 500,
+ 8000,
+ "No namenode is reported active");
Review Comment:
This is better, but we need the utility method to introduce wait on it's
own. Rather than returning boolean, it can use GenericTestUtil and wait (or
throw Exception eventually).
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