Bulk Operation

HDFS-12943 RBF: Support observer node from Router-Based Federation

HDFS-12943 Prevent Observer NameNode from becoming StandBy NameNode

HDFS-12943 [SBN read] Allow configurably enable/disable AlignmentContext on NameNode

HDFS-12943 [SBN read] Revisit GlobalStateIdContext locking when getting server state id

HDFS-12943 [SBN read] reportBadBlock is rejected by Observer.

HDFS-12943 [SBN read] StanbyNode does not come out of safemode while adding new blocks.

HDFS-12943 [SBN read] Change client logging to be less aggressive

HDFS-12943 Fix logging error in TestEditLog#testMultiStreamsLoadEditWithConfMaxTxns

HDFS-12943 [SBN read] Got an unexpected txid when tail editlog

HDFS-12943 [SBN Read] Add the document link to the top page

HDFS-12943 Throwing RemoteException in the time of Read Operation

HDFS-12943 [SBN Read] StateId and TrasactionId not present in Trace level logging

HDFS-12943 [SBN read] Unclear Log.WARN message in GlobalStateIdContext

HDFS-12943 Fix white spaces related to SBN reads.

HDFS-12943 Balancer should work with ObserverNode

HDFS-12943 ObserverReadInvocationHandler should implement RpcInvocationHandler

HDFS-12943 Update "Consistent Read from Observer" User Guide with Edit Tailing Frequency

HDFS-12943 Document dfs.ha.tail-edits.period in user guide.

HDFS-12943 Adjust annotations on new interfaces/classes for SBN reads.

HDFS-12943 Handle exception from internalQueueCall

HDFS-12943 Move ipfailover config key out of HdfsClientConfigKeys

HDFS-12943 Description errors in the comparison logic of transaction ID

HDFS-12943 Create user guide for "Consistent reads from Observer" feature.

HDFS-12943 Make ZKFC ObserverNode aware

HDFS-12943 ORFPP should also clone DT for the virtual IP

HDFS-12943 Fix class cast error in NNThroughputBenchmark with ObserverReadProxyProvider.

HDFS-12943 Fix the order of logging arguments in ObserverReadProxyProvider.

HDFS-12943 Allow manual transition from Standby to Observer

HDFS-12943 Allow manual failover between standby and observer

HDFS-12943 Test reads from standby on a secure cluster with Configured failover

HDFS-12943 Test reads from standby on a secure cluster with IP failover

HDFS-12943 NN status discovery does not leverage delegation token

HDFS-12943 Emulate Observer node falling far behind the Active

HDFS-12943 ObserverReadProxyProviderWithIPFailover should work with HA configuration

HDFS-12943 ObserverReadProxyProvider should enable observer read by default

HDFS-12943 Introduce the single Observer failure

HDFS-12943 TestObserverNode refactoring

HDFS-12943 Fix crlf line endings in HDFS-12943 branch

HDFS-12943 Unit Test for transitioning between different states

HDFS-12943 Handle BlockMissingException when reading from observer

HDFS-12943 Add a configuration to turn on/off observer reads

HDFS-12943 Throw retriable exception for getBlockLocations when ObserverNameNode is in safemode

HDFS-12943 Add mechanism to allow certain RPC calls to bypass sync

HDFS-12943 ObserverNode should reject read requests when it is too far behind.

HDFS-12943 Only some protocol methods should perform msync wait

HDFS-12943 Remove AlignmentContext from AbstractNNFailoverProxyProvider

HDFS-12943 Refactor NameNode failover proxy providers

HDFS-12943 Limit logging frequency of edit tail related statements

HDFS-12943 Reduce logging frequency of QuorumJournalManager#selectInputStreams

HDFS-12943 ObserverReadProxyProvider should work with IPFailoverProxyProvider

HDFS-12943 Unit tests for standby reads.

HDFS-12943 Postpone NameNode state discovery in ObserverReadProxyProvider until the first real RPC call.

HDFS-12943 Implement performFailover logic for ObserverReadProxyProvider.

HDFS-12943 TestStateAlignmentContextWithHA should use real ObserverReadProxyProvider instead of AlignmentContextProxyProvider.

HDFS-12943 Add msync server implementation.

HDFS-12943 Use getServiceStatus to discover observer namenodes

HDFS-12943 ClientGCIContext should be correctly named ClientGSIContext

HDFS-12943 NameNodeRpcServer getEditsFromTxid assumes it is run on active NameNode

HDFS-12943 Introduce msync API call

HDFS-12943 Move RPC response serialization into Server.doResponse

HDFS-12943 [Edit Tail Fast Path Pt 4] Cleanup: integration test, documentation, remove unnecessary dummy sync

HDFS-12943 [Edit Tail Fast Path Pt 3] NameNode-side changes to support tailing edits via RPC

HDFS-12943 [Edit Tail Fast Path Pt 2] Add ability for JournalNode to serve edits via RPC

HDFS-12943 [Edit Tail Fast Path Pt 1] Enhance JournalNode with an in-memory cache of recent edit transactions

HDFS-12943 Add ReadOnly annotation to methods in ClientProtocol

HDFS-12943 Support observer nodes in MiniDFSCluster

HDFS-12943 HDFS-13522: Add federated nameservices states to client protocol and propagate it between routers and clients.

HDFS-12943 Make Client field AlignmentContext non-static.

HDFS-12943 Add lastSeenStateId to RpcRequestHeader.

HDFS-12943 Add haadmin commands to transition between standby and observer

HDFS-12943 Standby NameNode should roll active edit log when checkpointing

HDFS-12943 Allow Observer to participate in NameNode failover

HDFS-12943 Support observer reads for WebHDFS

HDFS-12943 [Edit Tail Fast Path] Allow SbNN to tail in-progress edits from JN via RPC

HDFS-12943 Tailing edits should not update quota counts on ObserverNode

HDFS-12943 StandbyNode should upload FsImage to ObserverNode after checkpointing.

HDFS-12943 Fine-grained locking while consuming journal stream.

HDFS-12943 Add stateId to RPC headers.

HDFS-12943 Introduce ObserverReadProxyProvider

HDFS-12943 Changes to the NameNode to support reads from standby