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Fix up CHANGES.txt files post commit of HDFS-1623 and HADOOP-7454.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1296540 13f79535-47bb-0310-9956-ffa450edef68
Aaron Myers 13 éve
szülő
commit
8e303014bc

+ 0 - 53
hadoop-common-project/hadoop-common/CHANGES.HDFS-1623.txt

@@ -1,53 +0,0 @@
-Changes for HDFS-1623 branch.
-
-This change list will be merged into the trunk CHANGES.txt when the HDFS-1623
-branch is merged.
-------------------------------
-
-HADOOP-7455. HA: Introduce HA Service Protocol Interface. (suresh)
-
-HADOOP-7774. HA: Administrative CLI to control HA daemons. (todd)
-
-HADOOP-7896. HA: if both NNs are in Standby mode, client needs to try failing
-back and forth several times with sleeps. (atm)
-
-HADOOP-7922. Improve some logging for client IPC failovers and
-StandbyExceptions (todd)
-
-HADOOP-7921. StandbyException should extend IOException (todd)
-
-HADOOP-7928. HA: Client failover policy is incorrectly trying to fail over all
-IOExceptions (atm)
-
-HADOOP-7925. Add interface and update CLI to query current state to
-HAServiceProtocol (eli via todd)
-
-HADOOP-7932. Make client connection retries on socket time outs configurable.
-(Uma Maheswara Rao G via todd)
-
-HADOOP-7924. FailoverController for client-based configuration (eli)
-
-HADOOP-7961. Move HA fencing to common. (eli)
-
-HADOOP-7970. HAServiceProtocol methods must throw IOException.
-(Hari Mankude via suresh).
-
-HADOOP-7992. Add ZKClient library to facilitate leader election.
-(Bikas Saha via suresh).
-
-HADOOP-7983. HA: failover should be able to pass args to fencers. (eli)
-
-HADOOP-7938. HA: the FailoverController should optionally fence the
-active during failover. (eli)
-
-HADOOP-7991. HA: the FailoverController should check the standby is
-ready before failing over. (eli)
-
-HADOOP-8038. Add 'ipc.client.connect.max.retries.on.timeouts' entry in
-core-default.xml file. (Uma Maheswara Rao G via atm)
-
-HADOOP-8041. Log a warning when a failover is first attempted (todd)
-
-HADOOP-8068. void methods can swallow exceptions when going through failover path (todd)
-
-HADOOP-8116. RetriableCommand is using RetryPolicy incorrectly after HADOOP-7896. (atm)

+ 57 - 0
hadoop-common-project/hadoop-common/CHANGES.txt

@@ -8,6 +8,11 @@ Trunk (unreleased changes)
     FSDataOutputStream.sync() and Syncable.sync().  (szetszwo)
 
   NEW FEATURES
+    
+    HADOOP-7454. Common side of High Availability Framework (HDFS-1623)
+    Contributed by Todd Lipcon, Aaron T. Myers, Eli Collins, Uma Maheswara Rao G,
+    Bikas Saha, Suresh Srinivas, Jitendra Nath Pandey, Hari Mankude, Brandon Li,
+    Sanjay Radia, Mingjie Lai, and Gregory Chanan
 
   IMPROVEMENTS
 
@@ -109,6 +114,58 @@ Trunk (unreleased changes)
 
     HADOOP-7761. Improve the performance of raw comparisons. (todd)
 
+  BREAKDOWN OF HADOOP-7454 SUBTASKS
+
+    HADOOP-7455. HA: Introduce HA Service Protocol Interface. (suresh)
+    
+    HADOOP-7774. HA: Administrative CLI to control HA daemons. (todd)
+    
+    HADOOP-7896. HA: if both NNs are in Standby mode, client needs to try failing
+    back and forth several times with sleeps. (atm)
+    
+    HADOOP-7922. Improve some logging for client IPC failovers and
+    StandbyExceptions (todd)
+    
+    HADOOP-7921. StandbyException should extend IOException (todd)
+    
+    HADOOP-7928. HA: Client failover policy is incorrectly trying to fail over all
+    IOExceptions (atm)
+    
+    HADOOP-7925. Add interface and update CLI to query current state to
+    HAServiceProtocol (eli via todd)
+    
+    HADOOP-7932. Make client connection retries on socket time outs configurable.
+    (Uma Maheswara Rao G via todd)
+    
+    HADOOP-7924. FailoverController for client-based configuration (eli)
+    
+    HADOOP-7961. Move HA fencing to common. (eli)
+    
+    HADOOP-7970. HAServiceProtocol methods must throw IOException.  (Hari Mankude
+    via suresh).
+    
+    HADOOP-7992. Add ZKClient library to facilitate leader election.  (Bikas Saha
+    via suresh).
+    
+    HADOOP-7983. HA: failover should be able to pass args to fencers. (eli)
+    
+    HADOOP-7938. HA: the FailoverController should optionally fence the active
+    during failover. (eli)
+    
+    HADOOP-7991. HA: the FailoverController should check the standby is ready
+    before failing over. (eli)
+    
+    HADOOP-8038. Add 'ipc.client.connect.max.retries.on.timeouts' entry in
+    core-default.xml file. (Uma Maheswara Rao G via atm)
+    
+    HADOOP-8041. Log a warning when a failover is first attempted (todd)
+    
+    HADOOP-8068. void methods can swallow exceptions when going through failover
+    path (todd)
+    
+    HADOOP-8116. RetriableCommand is using RetryPolicy incorrectly after
+    HADOOP-7896. (atm)
+
 Release 0.23.3 - UNRELEASED 
 
   INCOMPATIBLE CHANGES

+ 0 - 252
hadoop-hdfs-project/hadoop-hdfs/CHANGES.HDFS-1623.txt

@@ -1,252 +0,0 @@
-Changes for HDFS-1623 branch.
-
-This change list will be merged into the trunk CHANGES.txt when the HDFS-1623
-branch is merged.
-------------------------------
-
-HDFS-2179. Add fencing framework and mechanisms for NameNode HA. (todd)
-
-HDFS-1974. Introduce active and standy states to the namenode. (suresh)
-
-HDFS-2407. getServerDefaults and getStats don't check operation category (atm)
-
-HDFS-1973. HA: HDFS clients must handle namenode failover and switch over to the new active namenode. (atm)
-
-HDFS-2301. Start/stop appropriate namenode services when transition to active and standby states. (suresh)
-
-HDFS-2231. Configuration changes for HA namenode. (suresh)
-
-HDFS-2418. Change ConfiguredFailoverProxyProvider to take advantage of HDFS-2231. (atm)
-
-HDFS-2393. Mark appropriate methods of ClientProtocol with the idempotent annotation. (atm)
-
-HDFS-2523. Small NN fixes to include HAServiceProtocol and prevent NPE on shutdown. (todd)
-
-HDFS-2577. NN fails to start since it tries to start secret manager in safemode. (todd)
-
-HDFS-2582. Scope dfs.ha.namenodes config by nameservice (todd)
-
-HDFS-2591. MiniDFSCluster support to mix and match federation with HA (todd)
-
-HDFS-1975. Support for sharing the namenode state from active to standby. (jitendra, atm, todd)
-
-HDFS-1971. Send block report from datanode to both active and standby namenodes. (sanjay, todd via suresh)
-
-HDFS-2616. Change DatanodeProtocol#sendHeartbeat() to return HeartbeatResponse. (suresh)
-
-HDFS-2622. Fix TestDFSUpgrade in HA branch. (todd)
-
-HDFS-2612. Handle refreshNameNodes in federated HA clusters (todd)
-
-HDFS-2623. Add test case for hot standby capability (todd)
-
-HDFS-2626. BPOfferService.verifyAndSetNamespaceInfo needs to be synchronized (todd)
-
-HDFS-2624. ConfiguredFailoverProxyProvider doesn't correctly stop ProtocolTranslators (todd)
-
-HDFS-2625. TestDfsOverAvroRpc failing after introduction of HeartbeatResponse type (todd)
-
-HDFS-2627. Determine DN's view of which NN is active based on heartbeat responses (todd)
-
-HDFS-2634. Standby needs to ingest latest edit logs before transitioning to active (todd)
-
-HDFS-2671. NN should throw StandbyException in response to RPCs in STANDBY state (todd)
-
-HDFS-2680. DFSClient should construct failover proxy with exponential backoff (todd)
-
-HDFS-2683. Authority-based lookup of proxy provider fails if path becomes canonicalized (todd)
-
-HDFS-2689. HA: BookKeeperEditLogInputStream doesn't implement isInProgress() (atm)
-
-HDFS-2602. NN should log newly-allocated blocks without losing BlockInfo (atm)
-
-HDFS-2667. Fix transition from active to standby (todd)
-
-HDFS-2684. Fix up some failing unit tests on HA branch (todd)
-
-HDFS-2679. Add interface to query current state to HAServiceProtocol (eli via todd)
-
-HDFS-2677. Web UI should indicate the NN state. (eli via todd)
-
-HDFS-2678. When a FailoverProxyProvider is used, DFSClient should not retry connection ten times before failing over (atm via todd)
-
-HDFS-2682. When a FailoverProxyProvider is used, Client should not retry for 45 times if it is timing out to connect to server. (Uma Maheswara Rao G via todd)
-
-HDFS-2693. Fix synchronization issues around state transition (todd)
-
-HDFS-1972. Fencing mechanism for block invalidations and replications (todd)
-
-HDFS-2714. Fix test cases which use standalone FSNamesystems (todd)
-
-HDFS-2692. Fix bugs related to failover from/into safe mode. (todd)
-
-HDFS-2716. Configuration needs to allow different dfs.http.addresses for each HA NN (todd)
-
-HDFS-2720. Fix MiniDFSCluster HA support to work properly on Windows. (Uma Maheswara Rao G via todd)
-
-HDFS-2291. Allow the StandbyNode to make checkpoints in an HA setup. (todd)
-
-HDFS-2709. Appropriately handle error conditions in EditLogTailer (atm via todd)
-
-HDFS-2730. Refactor shared HA-related test code into HATestUtil class (todd)
-
-HDFS-2762. Fix TestCheckpoint timing out on HA branch. (Uma Maheswara Rao G via todd)
-
-HDFS-2724. NN web UI can throw NPE after startup, before standby state is entered. (todd)
-
-HDFS-2753. Fix standby getting stuck in safemode when blocks are written while SBN is down. (Hari Mankude and todd via todd)
-
-HDFS-2773. Reading edit logs from an earlier version should not leave blocks in under-construction state. (todd)
-
-HDFS-2775. Fix TestStandbyCheckpoints.testBothNodesInStandbyState failing intermittently. (todd)
-
-HDFS-2766. Test for case where standby partially reads log and then performs checkpoint. (atm)
-
-HDFS-2738. FSEditLog.selectinputStreams is reading through in-progress streams even when non-in-progress are requested. (atm)
-
-HDFS-2789. TestHAAdmin.testFailover is failing (eli)
-
-HDFS-2747. Entering safe mode after starting SBN can NPE. (Uma Maheswara Rao G via todd)
-
-HDFS-2772. On transition to active, standby should not swallow ELIE. (atm)
-
-HDFS-2767. ConfiguredFailoverProxyProvider should support NameNodeProtocol. (Uma Maheswara Rao G via todd)
-
-HDFS-2795. Standby NN takes a long time to recover from a dead DN starting up. (todd)
-
-HDFS-2592. Balancer support for HA namenodes. (Uma Maheswara Rao G via todd)
-
-HDFS-2367. Enable the configuration of multiple HA cluster addresses. (atm)
-
-HDFS-2812. When becoming active, the NN should treat all leases as freshly renewed. (todd)
-
-HDFS-2737. Automatically trigger log rolls periodically on the active NN. (todd and atm)
-
-HDFS-2820. Add a simple sanity check for HA config (todd)
-
-HDFS-2688. Add tests for quota tracking in an HA cluster. (todd)
-
-HDFS-2804. Should not mark blocks under-replicated when exiting safemode (todd)
-
-HDFS-2807. Service level authorizartion for HAServiceProtocol. (jitendra)
-
-HDFS-2809. Add test to verify that delegation tokens are honored after failover. (jitendra and atm)
-
-HDFS-2838. NPE in FSNamesystem when in safe mode. (Gregory Chanan via eli)
-
-HDFS-2805. Add a test for a federated cluster with HA NNs. (Brandon Li via jitendra)
-
-HDFS-2841. HAAdmin does not work if security is enabled. (atm)
-
-HDFS-2691. Fixes for pipeline recovery in an HA cluster: report RBW replicas immediately upon pipeline creation. (todd)
-
-HDFS-2824. Fix failover when prior NN died just after creating an edit log segment. (atm via todd)
-
-HDFS-2853. HA: NN fails to start if the shared edits dir is marked required (atm via eli)
-
-HDFS-2845. SBN should not allow browsing of the file system via web UI. (Bikas Saha via atm)
-
-HDFS-2742. HA: observed dataloss in replication stress test. (todd via eli)
-
-HDFS-2870. Fix log level for block debug info in processMisReplicatedBlocks (todd)
-
-HDFS-2859. LOCAL_ADDRESS_MATCHER.match has NPE when called from DFSUtil.getSuffixIDs when the host is incorrect (Bikas Saha via todd)
-
-HDFS-2861. checkpointing should verify that the dfs.http.address has been configured to a non-loopback for peer NN (todd)
-
-HDFS-2860. TestDFSRollback#testRollback is failing. (atm)
-
-HDFS-2769. HA: When HA is enabled with a shared edits dir, that dir should be
-marked required. (atm via eli)
-
-HDFS-2863. Failures observed if dfs.edits.dir and shared.edits.dir have same directories. (Bikas Saha via atm)
-
-HDFS-2874. Edit log should log to shared dirs before local dirs. (todd)
-
-HDFS-2890. DFSUtil#getSuffixIDs should skip unset configurations. (atm)
-
-HDFS-2792. Make fsck work. (atm)
-
-HDFS-2808. HA: haadmin should use namenode ids. (eli)
-
-HDFS-2819. Document new HA-related configs in hdfs-default.xml. (eli)
-
-HDFS-2752. HA: exit if multiple shared dirs are configured. (eli)
-
-HDFS-2894. HA: automatically determine the nameservice Id if only one nameservice is configured. (eli)
-
-HDFS-2733. Document HA configuration and CLI. (atm)
-
-HDFS-2794. Active NN may purge edit log files before standby NN has a chance to read them (todd)
-
-HDFS-2901. Improvements for SBN web UI - not show under-replicated/missing blocks. (Brandon Li via jitendra)
-
-HDFS-2905. HA: Standby NN NPE when shared edits dir is deleted. (Bikas Saha via jitendra)
-
-HDFS-2579. Starting delegation token manager during safemode fails. (todd)
-
-HDFS-2510. Add HA-related metrics. (atm)
-
-HDFS-2924. Standby checkpointing fails to authenticate in secure cluster. (todd)
-
-HDFS-2915. HA: TestFailureOfSharedDir.testFailureOfSharedDir() has race condition. (Bikas Saha via jitendra)
-
-HDFS-2912. Namenode not shutting down when shared edits dir is inaccessible. (Bikas Saha via atm)
-
-HDFS-2917. HA: haadmin should not work if run by regular user (eli)
-
-HDFS-2939. TestHAStateTransitions fails on Windows. (Uma Maheswara Rao G via atm)
-
-HDFS-2947. On startup NN throws an NPE in the metrics system. (atm)
-
-HDFS-2942. TestActiveStandbyElectorRealZK fails if build dir does not exist. (atm)
-
-HDFS-2948. NN throws NPE during shutdown if it fails to startup (todd)
-
-HDFS-2909. HA: Inaccessible shared edits dir not getting removed from FSImage storage dirs upon error. (Bikas Saha via jitendra)
-
-HDFS-2934. Allow configs to be scoped to all NNs in the nameservice. (todd)
-
-HDFS-2935. Shared edits dir property should be suffixed with nameservice and namenodeID (todd)
-
-HDFS-2928. ConfiguredFailoverProxyProvider should not create a NameNode proxy with an underlying retry proxy. (Uma Maheswara Rao G via atm)
-
-HDFS-2955. IllegalStateException during standby startup in getCurSegmentTxId. (Hari Mankude via atm)
-
-HDFS-2937. TestDFSHAAdmin needs tests with MiniDFSCluster. (Brandon Li via suresh)
-
-HDFS-2586. Add protobuf service and implementation for HAServiceProtocol. (suresh via atm)
-
-HDFS-2952. NN should not start with upgrade option or with a pending an unfinalized upgrade. (atm)
-
-HDFS-2974. MiniDFSCluster does not delete standby NN name dirs during format. (atm)
-
-HDFS-2929. Stress test and fixes for block synchronization (todd)
-
-HDFS-2972. Small optimization building incremental block report (todd)
-
-HDFS-2973. Re-enable NO_ACK optimization for block deletion. (todd)
-
-HDFS-2922. HA: close out operation categories (eli)
-
-HDFS-2993. HA: BackupNode#checkOperation should permit CHECKPOINT operations (eli)
-
-HDFS-2904. Client support for getting delegation tokens. (todd)
-
-HDFS-3013. HA: NameNode format doesn't pick up dfs.namenode.name.dir.NameServiceId configuration (Mingjie Lai via todd)
-
-HDFS-3019. Fix silent failure of TestEditLogJournalFailures (todd)
-
-HDFS-2958. Sweep for remaining proxy construction which doesn't go through failover path. (atm)
-
-HDFS-2920. fix remaining TODO items. (atm and todd)
-
-HDFS-3027. Implement a simple NN health check. (atm)
-
-HDFS-3023. Optimize entries in edits log for persistBlocks call. (todd)
-
-HDFS-2979. Balancer should use logical uri for creating failover proxy with HA enabled. (atm)
-
-HDFS-3035. Fix failure of TestFileAppendRestart due to OP_UPDATE_BLOCKS (todd)
-
-HDFS-3039. Address findbugs and javadoc warnings on branch. (todd via atm)

+ 321 - 0
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt

@@ -14,6 +14,11 @@ Trunk (unreleased changes)
     HDFS-234. Integration with BookKeeper logging system. (Ivan Kelly 
     via jitendra)
 
+    HDFS-1623. High Availability Framework for HDFS NN. Contributed by Todd
+    Lipcon, Aaron T. Myers, Eli Collins, Uma Maheswara Rao G, Bikas Saha,
+    Suresh Srinivas, Jitendra Nath Pandey, Hari Mankude, Brandon Li, Sanjay
+    Radia, Mingjie Lai, and Gregory Chanan
+
   IMPROVEMENTS
 
     HDFS-1620. Rename HdfsConstants -> HdfsServerConstants, FSConstants ->
@@ -124,6 +129,322 @@ Trunk (unreleased changes)
     HDFS-3037. TestMulitipleNNDataBlockScanner#testBlockScannerAfterRestart is
     racy. (atm)
 
+  BREAKDOWN OF HDFS-1623 SUBTASKS
+
+    HDFS-2179. Add fencing framework and mechanisms for NameNode HA. (todd)
+    
+    HDFS-1974. Introduce active and standy states to the namenode. (suresh)
+    
+    HDFS-2407. getServerDefaults and getStats don't check operation category (atm)
+    
+    HDFS-1973. HA: HDFS clients must handle namenode failover and switch over to
+    the new active namenode. (atm)
+    
+    HDFS-2301. Start/stop appropriate namenode services when transition to active
+    and standby states. (suresh)
+    
+    HDFS-2231. Configuration changes for HA namenode. (suresh)
+    
+    HDFS-2418. Change ConfiguredFailoverProxyProvider to take advantage of
+    HDFS-2231. (atm)
+    
+    HDFS-2393. Mark appropriate methods of ClientProtocol with the idempotent
+    annotation. (atm)
+    
+    HDFS-2523. Small NN fixes to include HAServiceProtocol and prevent NPE on
+    shutdown. (todd)
+    
+    HDFS-2577. NN fails to start since it tries to start secret manager in
+    safemode. (todd)
+    
+    HDFS-2582. Scope dfs.ha.namenodes config by nameservice (todd)
+    
+    HDFS-2591. MiniDFSCluster support to mix and match federation with HA (todd)
+    
+    HDFS-1975. Support for sharing the namenode state from active to standby.
+    (jitendra, atm, todd)
+    
+    HDFS-1971. Send block report from datanode to both active and standby
+    namenodes. (sanjay, todd via suresh)
+    
+    HDFS-2616. Change DatanodeProtocol#sendHeartbeat() to return HeartbeatResponse.
+    (suresh)
+    
+    HDFS-2622. Fix TestDFSUpgrade in HA branch. (todd)
+    
+    HDFS-2612. Handle refreshNameNodes in federated HA clusters (todd)
+    
+    HDFS-2623. Add test case for hot standby capability (todd)
+    
+    HDFS-2626. BPOfferService.verifyAndSetNamespaceInfo needs to be synchronized
+    (todd)
+    
+    HDFS-2624. ConfiguredFailoverProxyProvider doesn't correctly stop
+    ProtocolTranslators (todd)
+    
+    HDFS-2625. TestDfsOverAvroRpc failing after introduction of HeartbeatResponse
+    type (todd)
+    
+    HDFS-2627. Determine DN's view of which NN is active based on heartbeat
+    responses (todd)
+    
+    HDFS-2634. Standby needs to ingest latest edit logs before transitioning to
+    active (todd)
+    
+    HDFS-2671. NN should throw StandbyException in response to RPCs in STANDBY
+    state (todd)
+    
+    HDFS-2680. DFSClient should construct failover proxy with exponential backoff
+    (todd)
+    
+    HDFS-2683. Authority-based lookup of proxy provider fails if path becomes
+    canonicalized (todd)
+    
+    HDFS-2689. HA: BookKeeperEditLogInputStream doesn't implement isInProgress()
+    (atm)
+    
+    HDFS-2602. NN should log newly-allocated blocks without losing BlockInfo (atm)
+    
+    HDFS-2667. Fix transition from active to standby (todd)
+    
+    HDFS-2684. Fix up some failing unit tests on HA branch (todd)
+    
+    HDFS-2679. Add interface to query current state to HAServiceProtocol (eli via
+    todd)
+    
+    HDFS-2677. Web UI should indicate the NN state. (eli via todd)
+    
+    HDFS-2678. When a FailoverProxyProvider is used, DFSClient should not retry
+    connection ten times before failing over (atm via todd)
+    
+    HDFS-2682. When a FailoverProxyProvider is used, Client should not retry for 45
+    times if it is timing out to connect to server. (Uma Maheswara Rao G via todd)
+    
+    HDFS-2693. Fix synchronization issues around state transition (todd)
+    
+    HDFS-1972. Fencing mechanism for block invalidations and replications (todd)
+    
+    HDFS-2714. Fix test cases which use standalone FSNamesystems (todd)
+    
+    HDFS-2692. Fix bugs related to failover from/into safe mode. (todd)
+    
+    HDFS-2716. Configuration needs to allow different dfs.http.addresses for each
+    HA NN (todd)
+    
+    HDFS-2720. Fix MiniDFSCluster HA support to work properly on Windows. (Uma
+    Maheswara Rao G via todd)
+    
+    HDFS-2291. Allow the StandbyNode to make checkpoints in an HA setup. (todd)
+    
+    HDFS-2709. Appropriately handle error conditions in EditLogTailer (atm via
+    todd)
+    
+    HDFS-2730. Refactor shared HA-related test code into HATestUtil class (todd)
+    
+    HDFS-2762. Fix TestCheckpoint timing out on HA branch. (Uma Maheswara Rao G via
+    todd)
+    
+    HDFS-2724. NN web UI can throw NPE after startup, before standby state is
+    entered. (todd)
+    
+    HDFS-2753. Fix standby getting stuck in safemode when blocks are written while
+    SBN is down. (Hari Mankude and todd via todd)
+    
+    HDFS-2773. Reading edit logs from an earlier version should not leave blocks in
+    under-construction state. (todd)
+    
+    HDFS-2775. Fix TestStandbyCheckpoints.testBothNodesInStandbyState failing
+    intermittently. (todd)
+    
+    HDFS-2766. Test for case where standby partially reads log and then performs
+    checkpoint. (atm)
+    
+    HDFS-2738. FSEditLog.selectinputStreams is reading through in-progress streams
+    even when non-in-progress are requested. (atm)
+    
+    HDFS-2789. TestHAAdmin.testFailover is failing (eli)
+    
+    HDFS-2747. Entering safe mode after starting SBN can NPE. (Uma Maheswara Rao G
+    via todd)
+    
+    HDFS-2772. On transition to active, standby should not swallow ELIE. (atm)
+    
+    HDFS-2767. ConfiguredFailoverProxyProvider should support NameNodeProtocol.
+    (Uma Maheswara Rao G via todd)
+    
+    HDFS-2795. Standby NN takes a long time to recover from a dead DN starting up.
+    (todd)
+    
+    HDFS-2592. Balancer support for HA namenodes. (Uma Maheswara Rao G via todd)
+    
+    HDFS-2367. Enable the configuration of multiple HA cluster addresses. (atm)
+    
+    HDFS-2812. When becoming active, the NN should treat all leases as freshly
+    renewed. (todd)
+    
+    HDFS-2737. Automatically trigger log rolls periodically on the active NN. (todd
+    and atm)
+    
+    HDFS-2820. Add a simple sanity check for HA config (todd)
+    
+    HDFS-2688. Add tests for quota tracking in an HA cluster. (todd)
+    
+    HDFS-2804. Should not mark blocks under-replicated when exiting safemode (todd)
+    
+    HDFS-2807. Service level authorizartion for HAServiceProtocol. (jitendra)
+    
+    HDFS-2809. Add test to verify that delegation tokens are honored after
+    failover. (jitendra and atm)
+    
+    HDFS-2838. NPE in FSNamesystem when in safe mode. (Gregory Chanan via eli)
+    
+    HDFS-2805. Add a test for a federated cluster with HA NNs. (Brandon Li via
+    jitendra)
+    
+    HDFS-2841. HAAdmin does not work if security is enabled. (atm)
+    
+    HDFS-2691. Fixes for pipeline recovery in an HA cluster: report RBW replicas
+    immediately upon pipeline creation. (todd)
+    
+    HDFS-2824. Fix failover when prior NN died just after creating an edit log
+    segment. (atm via todd)
+    
+    HDFS-2853. HA: NN fails to start if the shared edits dir is marked required
+    (atm via eli)
+    
+    HDFS-2845. SBN should not allow browsing of the file system via web UI. (Bikas
+    Saha via atm)
+    
+    HDFS-2742. HA: observed dataloss in replication stress test. (todd via eli)
+    
+    HDFS-2870. Fix log level for block debug info in processMisReplicatedBlocks
+    (todd)
+    
+    HDFS-2859. LOCAL_ADDRESS_MATCHER.match has NPE when called from
+    DFSUtil.getSuffixIDs when the host is incorrect (Bikas Saha via todd)
+    
+    HDFS-2861. checkpointing should verify that the dfs.http.address has been
+    configured to a non-loopback for peer NN (todd)
+    
+    HDFS-2860. TestDFSRollback#testRollback is failing. (atm)
+    
+    HDFS-2769. HA: When HA is enabled with a shared edits dir, that dir should be
+    marked required. (atm via eli)
+    
+    HDFS-2863. Failures observed if dfs.edits.dir and shared.edits.dir have same
+    directories. (Bikas Saha via atm)
+    
+    HDFS-2874. Edit log should log to shared dirs before local dirs. (todd)
+    
+    HDFS-2890. DFSUtil#getSuffixIDs should skip unset configurations. (atm)
+    
+    HDFS-2792. Make fsck work. (atm)
+    
+    HDFS-2808. HA: haadmin should use namenode ids. (eli)
+    
+    HDFS-2819. Document new HA-related configs in hdfs-default.xml. (eli)
+    
+    HDFS-2752. HA: exit if multiple shared dirs are configured. (eli)
+    
+    HDFS-2894. HA: automatically determine the nameservice Id if only one
+    nameservice is configured. (eli)
+    
+    HDFS-2733. Document HA configuration and CLI. (atm)
+    
+    HDFS-2794. Active NN may purge edit log files before standby NN has a chance to
+    read them (todd)
+    
+    HDFS-2901. Improvements for SBN web UI - not show under-replicated/missing
+    blocks. (Brandon Li via jitendra)
+    
+    HDFS-2905. HA: Standby NN NPE when shared edits dir is deleted. (Bikas Saha via
+    jitendra)
+    
+    HDFS-2579. Starting delegation token manager during safemode fails. (todd)
+    
+    HDFS-2510. Add HA-related metrics. (atm)
+    
+    HDFS-2924. Standby checkpointing fails to authenticate in secure cluster.
+    (todd)
+    
+    HDFS-2915. HA: TestFailureOfSharedDir.testFailureOfSharedDir() has race
+    condition. (Bikas Saha via jitendra)
+    
+    HDFS-2912. Namenode not shutting down when shared edits dir is inaccessible.
+    (Bikas Saha via atm)
+    
+    HDFS-2917. HA: haadmin should not work if run by regular user (eli)
+    
+    HDFS-2939. TestHAStateTransitions fails on Windows. (Uma Maheswara Rao G via
+    atm)
+    
+    HDFS-2947. On startup NN throws an NPE in the metrics system. (atm)
+    
+    HDFS-2942. TestActiveStandbyElectorRealZK fails if build dir does not exist.
+    (atm)
+    
+    HDFS-2948. NN throws NPE during shutdown if it fails to startup (todd)
+    
+    HDFS-2909. HA: Inaccessible shared edits dir not getting removed from FSImage
+    storage dirs upon error. (Bikas Saha via jitendra)
+    
+    HDFS-2934. Allow configs to be scoped to all NNs in the nameservice. (todd)
+    
+    HDFS-2935. Shared edits dir property should be suffixed with nameservice and
+    namenodeID (todd)
+    
+    HDFS-2928. ConfiguredFailoverProxyProvider should not create a NameNode proxy
+    with an underlying retry proxy. (Uma Maheswara Rao G via atm)
+    
+    HDFS-2955. IllegalStateException during standby startup in getCurSegmentTxId.
+    (Hari Mankude via atm)
+    
+    HDFS-2937. TestDFSHAAdmin needs tests with MiniDFSCluster. (Brandon Li via
+    suresh)
+    
+    HDFS-2586. Add protobuf service and implementation for HAServiceProtocol.
+    (suresh via atm)
+    
+    HDFS-2952. NN should not start with upgrade option or with a pending an
+    unfinalized upgrade. (atm)
+    
+    HDFS-2974. MiniDFSCluster does not delete standby NN name dirs during format.
+    (atm)
+    
+    HDFS-2929. Stress test and fixes for block synchronization (todd)
+    
+    HDFS-2972. Small optimization building incremental block report (todd)
+    
+    HDFS-2973. Re-enable NO_ACK optimization for block deletion. (todd)
+    
+    HDFS-2922. HA: close out operation categories (eli)
+    
+    HDFS-2993. HA: BackupNode#checkOperation should permit CHECKPOINT operations
+    (eli)
+    
+    HDFS-2904. Client support for getting delegation tokens. (todd)
+    
+    HDFS-3013. HA: NameNode format doesn't pick up
+    dfs.namenode.name.dir.NameServiceId configuration (Mingjie Lai via todd)
+    
+    HDFS-3019. Fix silent failure of TestEditLogJournalFailures (todd)
+    
+    HDFS-2958. Sweep for remaining proxy construction which doesn't go through
+    failover path. (atm)
+    
+    HDFS-2920. fix remaining TODO items. (atm and todd)
+    
+    HDFS-3027. Implement a simple NN health check. (atm)
+    
+    HDFS-3023. Optimize entries in edits log for persistBlocks call. (todd)
+    
+    HDFS-2979. Balancer should use logical uri for creating failover proxy with HA
+    enabled. (atm)
+    
+    HDFS-3035. Fix failure of TestFileAppendRestart due to OP_UPDATE_BLOCKS (todd)
+    
+    HDFS-3039. Address findbugs and javadoc warnings on branch. (todd via atm)
+
 Release 0.23.3 - UNRELEASED 
 
   INCOMPATIBLE CHANGES