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Hudson commented on HDFS-6440: ------------------------------ SUCCESS: Integrated in Hadoop-Yarn-trunk-Java8 #238 (See [https://builds.apache.org/job/Hadoop-Yarn-trunk-Java8/238/]) HDFS-6440. Support more than 2 NameNodes. Contributed by Jesse Yates. (atm: rev 49dfad942970459297f72632ed8dfd353e0c86de) * hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/ha/TestBootstrapStandby.java * hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestCheckpoint.java * hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/ha/TestBootstrapStandbyWithQJM.java * hadoop-hdfs-project/hadoop-hdfs/src/test/resources/hadoop-1-reserved.tgz * hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/ha/TestEditLogTailer.java * hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt * hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/ha/StandbyCheckpointer.java * hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/ha/TestSeveralNameNodes.java * hadoop-hdfs-project/hadoop-hdfs/src/test/resources/log4j.properties * hadoop-hdfs-project/hadoop-hdfs/src/main/resources/hdfs-default.xml * hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/ha/TestFailoverWithBlockTokensEnabled.java * hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/ImageServlet.java * hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/CheckpointConf.java * hadoop-hdfs-project/hadoop-hdfs/src/test/resources/hadoop-22-dfs-dir.tgz * hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/ha/TestRemoteNameNodeInfo.java * hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/ha/TestPipelinesFailover.java * hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/ha/HATestUtil.java * hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/HAUtil.java * hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NameNodeHttpServer.java * hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/tools/DFSZKFailoverController.java * hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/qjournal/MiniQJMHACluster.java * hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ha/ZKFailoverController.java * hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/ha/RemoteNameNodeInfo.java * hadoop-hdfs-project/hadoop-hdfs/src/test/resources/hadoop-0.23-reserved.tgz * hadoop-hdfs-project/hadoop-hdfs/src/test/resources/hadoop-2-reserved.tgz * hadoop-hdfs-project/hadoop-hdfs/src/contrib/bkjournal/src/test/java/org/apache/hadoop/contrib/bkjournal/TestBookKeeperHACheckpoints.java * hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/ha/MiniZKFCCluster.java * hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/ha/TestStandbyCheckpoints.java * hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/ha/TestZKFailoverController.java * hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/ha/EditLogTailer.java * hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/MiniDFSCluster.java * hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/ha/BootstrapStandby.java * hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestDFSUpgradeFromImage.java * hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/ha/TestHAConfiguration.java * hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/ha/TestDNFencingWithReplication.java * hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/security/token/block/BlockTokenSecretManager.java * hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/TransferFsImage.java * hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/security/token/block/TestBlockToken.java * hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestRollingUpgrade.java * hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestBackupNode.java * hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockManager.java * hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSConfigKeys.java * hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/ha/HAStressTestHarness.java * hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/MiniDFSNNTopology.java * hadoop-hdfs-project/hadoop-hdfs/src/test/resources/hadoop1-bbw.tgz > Support more than 2 NameNodes > ----------------------------- > > Key: HDFS-6440 > URL: https://issues.apache.org/jira/browse/HDFS-6440 > Project: Hadoop HDFS > Issue Type: New Feature > Components: auto-failover, ha, namenode > Affects Versions: 2.4.0 > Reporter: Jesse Yates > Assignee: Jesse Yates > Fix For: 3.0.0 > > Attachments: Multiple-Standby-NameNodes_V1.pdf, > hdfs-6440-cdh-4.5-full.patch, hdfs-6440-trunk-v1.patch, > hdfs-6440-trunk-v1.patch, hdfs-6440-trunk-v3.patch, hdfs-6440-trunk-v4.patch, > hdfs-6440-trunk-v5.patch, hdfs-6440-trunk-v6.patch, hdfs-6440-trunk-v7.patch, > hdfs-6440-trunk-v8.patch, hdfs-multiple-snn-trunk-v0.patch > > > Most of the work is already done to support more than 2 NameNodes (one > active, one standby). This would be the last bit to support running multiple > _standby_ NameNodes; one of the standbys should be available for fail-over. > Mostly, this is a matter of updating how we parse configurations, some > complexity around managing the checkpointing, and updating a whole lot of > tests. -- This message was sent by Atlassian JIRA (v6.3.4#6332)