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From: jonathanhurley@apache.org
To: commits@ambari.apache.org
Message-Id: <38be3a0bd9cd46b5b410c781b543339c@git.apache.org>
Subject: ambari git commit: AMBARI-13413 - Finalization Fails After Manual
 Upgrade Because of Cluster Version State Set To UPGRADING (jonathanhurley)
Date: Wed, 14 Oct 2015 13:01:24 +0000 (UTC)

Repository: ambari
Updated Branches:
  refs/heads/trunk 7a38f385e -> 703192fd8


AMBARI-13413 - Finalization Fails After Manual Upgrade Because of Cluster Version State Set To UPGRADING (jonathanhurley)


Project: http://git-wip-us.apache.org/repos/asf/ambari/repo
Commit: http://git-wip-us.apache.org/repos/asf/ambari/commit/703192fd
Tree: http://git-wip-us.apache.org/repos/asf/ambari/tree/703192fd
Diff: http://git-wip-us.apache.org/repos/asf/ambari/diff/703192fd

Branch: refs/heads/trunk
Commit: 703192fd8c7db3d925441bbfcf8a8e61f82b34b1
Parents: 7a38f38
Author: Jonathan Hurley <jhurley@hortonworks.com>
Authored: Tue Oct 13 17:25:32 2015 -0400
Committer: Jonathan Hurley <jhurley@hortonworks.com>
Committed: Wed Oct 14 09:01:11 2015 -0400

----------------------------------------------------------------------
 .../upgrades/FinalizeUpgradeAction.java         | 82 +++++++++++-------
 .../upgrades/UpgradeActionTest.java             | 88 ++++++++++++++++++++
 2 files changed, 141 insertions(+), 29 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/ambari/blob/703192fd/ambari-server/src/main/java/org/apache/ambari/server/serveraction/upgrades/FinalizeUpgradeAction.java
----------------------------------------------------------------------
diff --git a/ambari-server/src/main/java/org/apache/ambari/server/serveraction/upgrades/FinalizeUpgradeAction.java b/ambari-server/src/main/java/org/apache/ambari/server/serveraction/upgrades/FinalizeUpgradeAction.java
index 53e985e..22fc4c0 100644
--- a/ambari-server/src/main/java/org/apache/ambari/server/serveraction/upgrades/FinalizeUpgradeAction.java
+++ b/ambari-server/src/main/java/org/apache/ambari/server/serveraction/upgrades/FinalizeUpgradeAction.java
@@ -113,10 +113,10 @@ public class FinalizeUpgradeAction extends AbstractServerAction {
     String clusterName = getExecutionCommand().getClusterName();
 
     if (isDowngrade) {
-      return executeDowngrade(clusterName, originalStackId, targetStackId,
+      return finalizeDowngrade(clusterName, originalStackId, targetStackId,
           version);
     } else {
-      return executeUpgrade(clusterName, version);
+      return finalizeUpgrade(clusterName, version);
     }
   }
 
@@ -126,7 +126,7 @@ public class FinalizeUpgradeAction extends AbstractServerAction {
    * @param version     the target version of the upgrade
    * @return the command report
    */
-  private CommandReport executeUpgrade(String clusterName, String version)
+  private CommandReport finalizeUpgrade(String clusterName, String version)
     throws AmbariException, InterruptedException {
 
     StringBuilder outSB = new StringBuilder();
@@ -146,7 +146,8 @@ public class FinalizeUpgradeAction extends AbstractServerAction {
             "Cluster stack version {0} not found", version));
       }
 
-      // Validate that all of the hosts with a version in the cluster have the version being upgraded to, and it is in an allowed state.
+      // Validate that all of the hosts with a version in the cluster have the
+      // version being upgraded to, and it is in an allowed state.
       List<HostVersionEntity> hostVersions = hostVersionDAO.findByClusterStackAndVersion(
           clusterName, clusterDesiredStackId, version);
 
@@ -155,40 +156,55 @@ public class FinalizeUpgradeAction extends AbstractServerAction {
       Set<String> hostsWithoutCorrectVersionState = new HashSet<String>();
       Set<String> hostsToUpdate = new HashSet<String>();
 
-      // If true, then the cluster version is still in UPGRADING and allowed to transition to UPGRADED, and then CURRENT
-      boolean atLeastOneHostInInstalledState = false;
-
-      // It is important to only iterate over the hosts with a version, as opposed to all hosts, since some hosts
-      // may only have components that do not advertise a version, such as AMBARI_METRICS.
+      // It is important to only iterate over the hosts with a version, as
+      // opposed to all hosts, since some hosts may only have components that do
+      // not advertise a version, such as AMBARI_METRICS.
       for (HostVersionEntity hostVersion : hostVersions) {
-        boolean isStateCorrect = false;
-
-        if (RepositoryVersionState.UPGRADED == hostVersion.getState()) {
-          isStateCorrect = true;
-        } else {
-          if (hostVersion.getState() == RepositoryVersionState.INSTALLED) {
-            // It is possible that the host version has a state of INSTALLED and it never changed if the host only has
-            // components that do not advertise a version.
+        boolean hostHasCorrectVersionState = false;
+        RepositoryVersionState hostVersionState = hostVersion.getState();
+        switch( hostVersionState ){
+          case UPGRADED:{
+            // if the state is correct, then do nothing
+            hostHasCorrectVersionState = true;
+            break;
+          }
+          case INSTALLED:{
+            // It is possible that the host version has a state of INSTALLED and it
+            // never changed if the host only has components that do not advertise a
+            // version.
             HostEntity host = hostVersion.getHostEntity();
 
-            ServiceComponentHostSummary hostSummary = new ServiceComponentHostSummary(
-                ambariMetaInfo, host, clusterDesiredStackId);
-
-            if (hostSummary.haveAllComponentsFinishedAdvertisingVersion()){
-              isStateCorrect = true;
-              atLeastOneHostInInstalledState = true;
+            ServiceComponentHostSummary hostSummary = new ServiceComponentHostSummary(ambariMetaInfo,
+                host, clusterDesiredStackId);
+
+            // if all components have finished advertising their version, then
+            // this host can be considered UPGRADED
+            if (hostSummary.haveAllComponentsFinishedAdvertisingVersion()) {
+              // mark this as UPGRADED
+              hostHasCorrectVersionState = true;
+              hostVersion.setState(RepositoryVersionState.UPGRADED);
+              hostVersion = hostVersionDAO.merge(hostVersion);
+            } else {
+              hostsWithoutCorrectVersionState.add(hostVersion.getHostName());
             }
+
+            break;
+          }
+          default: {
+            // all other states are not allowed
+            hostsWithoutCorrectVersionState.add(hostVersion.getHostName());
+            break;
           }
         }
 
-        if (isStateCorrect) {
+        // keep track of this host version in order to transition it correctly
+        if (hostHasCorrectVersionState) {
           hostVersionsAllowed.add(hostVersion);
           hostsToUpdate.add(hostVersion.getHostName());
-        } else {
-          hostsWithoutCorrectVersionState.add(hostVersion.getHostName());
         }
       }
 
+      // throw an exception if there are hosts which are not not fully UPGRADED
       if (hostsWithoutCorrectVersionState.size() > 0) {
         String message = String.format("The following %d host(s) have not been upgraded to version %s. " +
                 "Please install and upgrade the Stack Version on those hosts and try again.\nHosts: %s\n",
@@ -199,10 +215,16 @@ public class FinalizeUpgradeAction extends AbstractServerAction {
         throw new AmbariException(message);
       }
 
+      // iterate through all host components and make sure that they are on the
+      // correct version; if they are not, then this will throw an exception
       checkHostComponentVersions(cluster, version, clusterDesiredStackId);
 
-      // May need to first transition to UPGRADED from UPGRADING
-      if (atLeastOneHostInInstalledState) {
+      // we're guaranteed to be ready transition to UPGRADED now; ensure that
+      // the transition will be allowed if the cluster state is not UPGRADED
+      upgradingClusterVersion = clusterVersionDAO.findByClusterAndStackAndVersion(clusterName,
+          clusterDesiredStackId, version);
+
+      if (RepositoryVersionState.UPGRADING == upgradingClusterVersion.getState()) {
         cluster.transitionClusterVersion(clusterDesiredStackId, version,
             RepositoryVersionState.UPGRADED);
 
@@ -210,6 +232,8 @@ public class FinalizeUpgradeAction extends AbstractServerAction {
             clusterName, clusterDesiredStackId, version);
       }
 
+      // we cannot finalize since the cluster was not ready to move into the
+      // UPGRADED state
       if (RepositoryVersionState.UPGRADED != upgradingClusterVersion.getState()) {
         throw new AmbariException(String.format("The cluster stack version state %s is not allowed to transition directly into %s",
             upgradingClusterVersion.getState(), RepositoryVersionState.CURRENT.toString()));
@@ -257,7 +281,7 @@ public class FinalizeUpgradeAction extends AbstractServerAction {
    *          the target version of the downgrade
    * @return the command report
    */
-  private CommandReport executeDowngrade(String clusterName,
+  private CommandReport finalizeDowngrade(String clusterName,
       StackId originalStackId, StackId targetStackId, String version)
       throws AmbariException, InterruptedException {
 

http://git-wip-us.apache.org/repos/asf/ambari/blob/703192fd/ambari-server/src/test/java/org/apache/ambari/server/serveraction/upgrades/UpgradeActionTest.java
----------------------------------------------------------------------
diff --git a/ambari-server/src/test/java/org/apache/ambari/server/serveraction/upgrades/UpgradeActionTest.java b/ambari-server/src/test/java/org/apache/ambari/server/serveraction/upgrades/UpgradeActionTest.java
index 79d2355..e88c8a7 100644
--- a/ambari-server/src/test/java/org/apache/ambari/server/serveraction/upgrades/UpgradeActionTest.java
+++ b/ambari-server/src/test/java/org/apache/ambari/server/serveraction/upgrades/UpgradeActionTest.java
@@ -534,6 +534,94 @@ public class UpgradeActionTest {
     }
   }
 
+  /**
+   * Tests that finalization can occur when the cluster state is
+   * {@link RepositoryVersionState#UPGRADING} if all of the hosts and components
+   * are reporting correct versions and states.
+   *
+   * @throws Exception
+   */
+  @Test
+  public void testFinalizeUpgradeWithClusterStateInconsistencies() throws Exception {
+    StackId sourceStack = HDP_21_STACK;
+    StackId targetStack = HDP_22_STACK;
+    String sourceRepo = HDP_2_1_1_0;
+    String targetRepo = HDP_2_2_1_0;
+
+    makeCrossStackUpgradeCluster(sourceStack, sourceRepo, targetStack, targetRepo);
+
+    Clusters clusters = m_injector.getInstance(Clusters.class);
+    Cluster cluster = clusters.getCluster("c1");
+
+    Service service = installService(cluster, "HDFS");
+    addServiceComponent(cluster, service, "NAMENODE");
+    addServiceComponent(cluster, service, "DATANODE");
+    createNewServiceComponentHost(cluster, "HDFS", "NAMENODE", "h1");
+    createNewServiceComponentHost(cluster, "HDFS", "DATANODE", "h1");
+
+    // create some configs
+    createConfigs(cluster);
+
+    // setup the cluster for the upgrade across stacks
+    cluster.setCurrentStackVersion(sourceStack);
+    cluster.setDesiredStackVersion(targetStack);
+
+    // set the SCH versions to the new stack so that the finalize action is
+    // happy
+    cluster.getServiceComponentHosts("HDFS", "NAMENODE").get(0).setVersion(targetRepo);
+    cluster.getServiceComponentHosts("HDFS", "DATANODE").get(0).setVersion(targetRepo);
+
+    // inject an unhappy path where the cluster repo version is still UPGRADING
+    // even though all of the hosts are UPGRADED
+    ClusterVersionEntity upgradingClusterVersion = clusterVersionDAO.findByClusterAndStackAndVersion(
+        "c1", HDP_22_STACK, targetRepo);
+
+    upgradingClusterVersion.setState(RepositoryVersionState.UPGRADING);
+    upgradingClusterVersion = clusterVersionDAO.merge(upgradingClusterVersion);
+
+    // verify the conditions for the test are met properly
+    upgradingClusterVersion = clusterVersionDAO.findByClusterAndStackAndVersion("c1", HDP_22_STACK, targetRepo);
+    List<HostVersionEntity> hostVersions = hostVersionDAO.findByClusterStackAndVersion("c1", HDP_22_STACK, targetRepo);
+
+    assertEquals(RepositoryVersionState.UPGRADING, upgradingClusterVersion.getState());
+    assertTrue(hostVersions.size() > 0);
+    for (HostVersionEntity hostVersion : hostVersions) {
+      assertEquals(RepositoryVersionState.UPGRADED, hostVersion.getState());
+    }
+
+    // now finalize and ensure we can transition from UPGRADING to UPGRADED
+    // automatically before CURRENT
+    Map<String, String> commandParams = new HashMap<String, String>();
+    commandParams.put(FinalizeUpgradeAction.UPGRADE_DIRECTION_KEY, "upgrade");
+    commandParams.put(FinalizeUpgradeAction.VERSION_KEY, targetRepo);
+    commandParams.put(FinalizeUpgradeAction.ORIGINAL_STACK_KEY, sourceStack.getStackId());
+    commandParams.put(FinalizeUpgradeAction.TARGET_STACK_KEY, targetStack.getStackId());
+
+    ExecutionCommand executionCommand = new ExecutionCommand();
+    executionCommand.setCommandParams(commandParams);
+    executionCommand.setClusterName("c1");
+
+    HostRoleCommand hostRoleCommand = hostRoleCommandFactory.create(null, null, null, null);
+
+    hostRoleCommand.setExecutionCommandWrapper(new ExecutionCommandWrapper(executionCommand));
+
+    FinalizeUpgradeAction action = m_injector.getInstance(FinalizeUpgradeAction.class);
+    action.setExecutionCommand(executionCommand);
+    action.setHostRoleCommand(hostRoleCommand);
+
+    CommandReport report = action.execute(null);
+    assertNotNull(report);
+    assertEquals(HostRoleStatus.COMPLETED.name(), report.getStatus());
+
+    StackId currentStackId = cluster.getCurrentStackVersion();
+    StackId desiredStackId = cluster.getDesiredStackVersion();
+
+    // verify current/desired stacks are updated to the new stack
+    assertEquals(desiredStackId, currentStackId);
+    assertEquals(targetStack, currentStackId);
+    assertEquals(targetStack, desiredStackId);
+  }
+
   private ServiceComponentHost createNewServiceComponentHost(Cluster cluster, String svc,
                                                              String svcComponent, String hostName) throws AmbariException {
     Assert.assertNotNull(cluster.getConfigGroups());