Here is the full config. I swapped the priorities on the sink processor after performing the namenode failiver and the writes were successful to the newly active namenode.
agent1.channels.ch1.type = FILE agent1.channels.ch1.checkpointDir = /flume_runtime/checkpoint agent1.channels.ch1.dataDirs = /flume_runtime/data agent1.channels.ch2.type = FILE agent1.channels.ch2.checkpointDir = /flume_runtime/checkpoint2 agent1.channels.ch2.dataDirs = /flume_runtime/data2 # Define an Avro source called avro-source1 on agent1 and tell it # to bind to 0.0.0.0:41414. Connect it to channel ch1. agent1.sources.avro-source1.channels = ch1 agent1.sources.avro-source1.type = avro agent1.sources.avro-source1.bind = 0.0.0.0 agent1.sources.avro-source1.port = 4545 agent1.sources.avro-source2.channels = ch2 agent1.sources.avro-source2.type = avro agent1.sources.avro-source2.bind = 0.0.0.0 agent1.sources.avro-source2.port = 4546 agent1.sinks.hdfs-sink1.channel = ch1 agent1.sinks.hdfs-sink1.type = hdfs agent1.sinks.hdfs-sink1.hdfs.path = hdfs://ip-10-4-71-187.ec2.internal/user/br/shim/eventstream/event/host101/ agent1.sinks.hdfs-sink1.hdfs.filePrefix = event agent1.sinks.hdfs-sink1.hdfs.writeFormat = Text agent1.sinks.hdfs-sink1.hdfs.rollInterval = 120 agent1.sinks.hdfs-sink1.hdfs.rollCount = 0 agent1.sinks.hdfs-sink1.hdfs.rollSize = 0 agent1.sinks.hdfs-sink1.hdfs.fileType = DataStream agent1.sinks.hdfs-sink1.hdfs.batchSize = 1000 agent1.sinks.hdfs-sink1.hdfs.txnEventSize = 1000 agent1.sinks.hdfs-sink2.channel = ch2 agent1.sinks.hdfs-sink2.type = hdfs agent1.sinks.hdfs-sink2.hdfs.path = hdfs://ip-10-4-71-187.ec2.internal/user/br/shim/eventstream/event/host102/ agent1.sinks.hdfs-sink2.hdfs.filePrefix = event agent1.sinks.hdfs-sink2.hdfs.writeFormat = Text agent1.sinks.hdfs-sink2.hdfs.rollInterval = 120 agent1.sinks.hdfs-sink2.hdfs.rollCount = 0 agent1.sinks.hdfs-sink2.hdfs.rollSize = 0 agent1.sinks.hdfs-sink2.hdfs.fileType = DataStream agent1.sinks.hdfs-sink2.hdfs.batchSize = 1000 agent1.sinks.hdfs-sink2.hdfs.txnEventSize = 1000 agent1.sinks.hdfs-sink1-back.channel = ch1 agent1.sinks.hdfs-sink1-back.type = hdfs agent1.sinks.hdfs-sink1-back.hdfs.path = hdfs://ip-10-110-69-240.ec2.internal/user/br/shim/eventstream/event/host101/ agent1.sinks.hdfs-sink1-back.hdfs.filePrefix = event agent1.sinks.hdfs-sink1-back.hdfs.writeFormat = Text agent1.sinks.hdfs-sink1-back.hdfs.rollInterval = 120 agent1.sinks.hdfs-sink1-back.hdfs.rollCount = 0 agent1.sinks.hdfs-sink1-back.hdfs.rollSize = 0 agent1.sinks.hdfs-sink1-back.hdfs.fileType = DataStream agent1.sinks.hdfs-sink1-back.hdfs.batchSize = 1000 agent1.sinks.hdfs-sink1-back.hdfs.txnEventSize = 1000 agent1.sinks.hdfs-sink2-back.channel = ch2 agent1.sinks.hdfs-sink2-back.type = hdfs agent1.sinks.hdfs-sink2-back.hdfs.path = hdfs://ip-10-110-69-240.ec2.internal/user/br/shim/eventstream/event/host102/ agent1.sinks.hdfs-sink2-back.hdfs.filePrefix = event agent1.sinks.hdfs-sink2-back.hdfs.writeFormat = Text agent1.sinks.hdfs-sink2-back.hdfs.rollInterval = 120 agent1.sinks.hdfs-sink2-back.hdfs.rollCount = 0 agent1.sinks.hdfs-sink2-back.hdfs.rollSize = 0 agent1.sinks.hdfs-sink2-back.hdfs.fileType = DataStream agent1.sinks.hdfs-sink2-back.hdfs.batchSize = 1000 agent1.sinks.hdfs-sink2-back.hdfs.txnEventSize = 1000 agent1.sinkgroups.failoverGroup1.sinks = hdfs-sink1 hdfs-sink1-back agent1.sinkgroups.failoverGroup1.processor.type = failover #higher number in priority is higher priority agent1.sinkgroups.failoverGroup1.processor.priority.hdfs-sink1 = 10 agent1.sinkgroups.failoverGroup1.processor.priority.hdfs-sink1-back = 5 #failover if failure detected for 10 seconds agent1.sinkgroups.failoverGroup1.processor.maxpenalty = 10000 agent1.sinkgroups.failoverGroup2.sinks = hdfs-sink2 hdfs-sink2-back agent1.sinkgroups.failoverGroup2.processor.type = failover #higher number in priority is higher priority agent1.sinkgroups.failoverGroup2.processor.priority.hdfs-sink2 = 10 agent1.sinkgroups.failoverGroup2.processor.priority.hdfs-sink2-back = 5 #failover if failure detected for 10 seconds agent1.sinkgroups.failoverGroup2.processor.maxpenalty = 10000 # Finally, now that we've defined all of our components, tell # agent1 which ones we want to activate. agent1.sinkgroups = failoverGroup1 failoverGroup2 agent1.channels = ch1 ch2 agent1.sources = avro-source1 avro-source2 agent1.sinks = hdfs-sink1 hdfs-sink2 hdfs-sink1-back hdfs-sink2-back ________________________________ From: Connor Woodson <[email protected]> To: [email protected]; Rahul Ravindran <[email protected]> Sent: Monday, January 14, 2013 2:28 PM Subject: Re: HDFSsink failover error I assume that's only part of your config as it's missing a source; if you get rid of the sink processor, can you write to each hdfs sink individually? (comment one out at a time) - Connor On Mon, Jan 14, 2013 at 1:42 PM, Rahul Ravindran <[email protected]> wrote: Hi, > I am attempting to setup an HDFS sink such that when a namenode failover >occurs (active namenode is brought down and the standby namenode switches to >active), the failover sink would send events to the new active namenode. I see >an error about WRITE not supported in standby state..Does this not count as a >failure for the failover sink? >Thanks, >~Rahul. > > >My config is as follows: > > >agent1.sinks.hdfs-sink1.channel = ch1 >agent1.sinks.hdfs-sink1.type = hdfs >agent1.sinks.hdfs-sink1.hdfs.path = >hdfs://ip-10-4-71-187.ec2.internal/user/br/shim/eventstream/event/host101/ >agent1.sinks.hdfs-sink1.hdfs.filePrefix = event >agent1.sinks.hdfs-sink1.hdfs.writeFormat = Text >agent1.sinks.hdfs-sink1.hdfs.rollInterval = 120 >agent1.sinks.hdfs-sink1.hdfs.rollCount = 0 >agent1.sinks.hdfs-sink1.hdfs.rollSize = 0 >agent1.sinks.hdfs-sink1.hdfs.fileType = DataStream >agent1.sinks.hdfs-sink1.hdfs.batchSize = 1000 >agent1.sinks.hdfs-sink1.hdfs.txnEventSize = 1000 > > >agent1.sinks.hdfs-sink1-back.channel = ch1 >agent1.sinks.hdfs-sink1-back.type = hdfs >agent1.sinks.hdfs-sink1-back.hdfs.path = >hdfs://ip-10-110-69-240.ec2.internal/user/br/shim/eventstream/event/host101/ >agent1.sinks.hdfs-sink1-back.hdfs.filePrefix = event >agent1.sinks.hdfs-sink1-back.hdfs.writeFormat = Text >agent1.sinks.hdfs-sink1-back.hdfs.rollInterval = 120 >agent1.sinks.hdfs-sink1-back.hdfs.rollCount = 0 >agent1.sinks.hdfs-sink1-back.hdfs.rollSize = 0 >agent1.sinks.hdfs-sink1-back.hdfs.fileType = DataStream >agent1.sinks.hdfs-sink1-back.hdfs.batchSize = 1000 >agent1.sinks.hdfs-sink1-back.hdfs.txnEventSize = 1000 > > >agent1.sinkgroups.failoverGroup1.sinks = hdfs-sink1 hdfs-sink1-back >agent1.sinkgroups.failoverGroup1.processor.type = failover >#higher number in priority is higher priority >agent1.sinkgroups.failoverGroup1.processor.priority.hdfs-sink1 = 10 >agent1.sinkgroups.failoverGroup1.processor.priority.hdfs-sink1-back = 5 >#failover if failure detected for 10 seconds >agent1.sinkgroups.failoverGroup1.processor.maxpenalty = 10000 > > > > >agent1.sinkgroups = failoverGroup1 > > > >14 Jan 2013 21:37:28,819 INFO [hdfs-hdfs-sink2-call-runner-6] >(org.apache.flume.sink.hdfs.BucketWriter.doOpen:208) - Creating >hdfs://ip-10-4-71-187.ec2.internal/.... >14 Jan 2013 21:37:28,834 WARN >[SinkRunner-PollingRunner-FailoverSinkProcessor] >(org.apache.flume.sink.hdfs.HDFSEventSink.process:456) - HDFS IO error >org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.ipc.StandbyException): >Operation category WRITE is not supported in state standby > at >org.apache.hadoop.hdfs.server.namenode.ha.StandbyState.checkOperation(StandbyState.java:87) > at >org.apache.hadoop.hdfs.server.namenode.NameNode$NameNodeHAContext.checkOperation(NameNode.java:1379) > at >org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkOperation(FSNamesystem.java:762) > at >org.apache.hadoop.hdfs.server.namenode.FSNamesystem.startFileInt(FSNamesystem.java:1688) > at >org.apache.hadoop.hdfs.server.namenode.FSNamesystem.startFile(FSNamesystem.java:1669) > at >org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.create(NameNodeRpcServer.java:409) > at >org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.create(ClientNamenodeProtocolServerSideTranslatorPB.java:205) > at >org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java:44068) > at >org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:453) > at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:898) > at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1693) > at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1689) > at java.security.AccessController.doPrivileged(Native Method) > at javax.security.auth.Subject.doAs(Subject.java:396) > at >org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1332) > at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1687) > > > at org.apache.hadoop.ipc.Client.call(Client.java:1160) > at >org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:202) > at $Proxy11.create(Unknown Source) > at sun.reflect.GeneratedMethodAccessor8.invoke(Unknown Source) > at >sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) > at java.lang.reflect.Method.invoke(Method.java:616) > at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMetho
