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From Bryan Beaudreault <bbeaudrea...@hubspot.com>
Subject Re: Juggling or swaping out the standby NameNode in a QJM / HA configuration
Date Fri, 01 Aug 2014 04:43:18 GMT
This shouldn't have affected the journalnodes at all -- they are mostly
unaware of the zkfc and active/standby state.  Did you do something else
that may have impacted the journalnodes? (i.e. shut down 1 or more of them,
or something else)

For your previous 2 emails, reporting errors/warns when doing -formatZK:

The WARN is fine.  It's true that you could get in a weird state if you had
multiple namenodes up.  But with just 1 namenode up, you should be safe.
What you are trying to avoid is a split brain or standby/standby state, but
that is impossible with just 1 namenode alive.  Similarly, the ERROR is a
sanity check to make sure you don't screw yourself by formatting a running
cluster.  I should have mentioned you need to use the -force argument to
get around that.


On Fri, Aug 1, 2014 at 12:35 AM, Colin Kincaid Williams <discord@uw.edu>
wrote:

> However continuing with the process my QJM eventually error'd out and my
> Active NameNode went down.
>
> 2014-07-31 20:59:33,944 WARN  [Logger channel to rhel6.local/
> 10.120.5.247:8485] client.QuorumJournalManager
> (IPCLoggerChannel.java:call(357)) - Remote journal 10.120.5.247:8485
> failed to write txns 9635-9635. Will try to write to this JN again after
> the next log roll.
> org.apache.hadoop.ipc.RemoteException(java.io.IOException): IPC's epoch 5
> is not the current writer epoch  0
> at
> org.apache.hadoop.hdfs.qjournal.server.Journal.checkWriteRequest(Journal.java:430)
>  at
> org.apache.hadoop.hdfs.qjournal.server.Journal.journal(Journal.java:331)
> at
> org.apache.hadoop.hdfs.qjournal.server.JournalNodeRpcServer.journal(JournalNodeRpcServer.java:142)
>  at
> org.apache.hadoop.hdfs.qjournal.protocolPB.QJournalProtocolServerSideTranslatorPB.journal(QJournalProtocolServerSideTranslatorPB.java:132)
> at
> org.apache.hadoop.hdfs.qjournal.protocol.QJournalProtocolProtos$QJournalProtocolService$2.callBlockingMethod(QJournalProtocolProtos.java:14018)
>  at
> org.apache.hadoop.ipc.ProtobufRpcEngine$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$1.run(Server.java:1689)
>  at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:415)
>  at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1332)
> at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1687)
>
> at org.apache.hadoop.ipc.Client.call(Client.java:1224)
> at
> org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:202)
>  at com.sun.proxy.$Proxy9.journal(Unknown Source)
> at
> org.apache.hadoop.hdfs.qjournal.protocolPB.QJournalProtocolTranslatorPB.journal(QJournalProtocolTranslatorPB.java:156)
>  at
> org.apache.hadoop.hdfs.qjournal.client.IPCLoggerChannel$7.call(IPCLoggerChannel.java:354)
> at
> org.apache.hadoop.hdfs.qjournal.client.IPCLoggerChannel$7.call(IPCLoggerChannel.java:347)
>  at java.util.concurrent.FutureTask.run(FutureTask.java:262)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>  at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> at java.lang.Thread.run(Thread.java:745)
> 2014-07-31 20:59:33,954 WARN  [Logger channel to rhel1.local/
> 10.120.5.203:8485] client.QuorumJournalManager
> (IPCLoggerChannel.java:call(357)) - Remote journal 10.120.5.203:8485
> failed to write txns 9635-9635. Will try to write to this JN again after
> the next log roll.
> org.apache.hadoop.ipc.RemoteException(java.io.IOException): IPC's epoch 5
> is not the current writer epoch  0
> at
> org.apache.hadoop.hdfs.qjournal.server.Journal.checkWriteRequest(Journal.java:430)
>  at
> org.apache.hadoop.hdfs.qjournal.server.Journal.journal(Journal.java:331)
> at
> org.apache.hadoop.hdfs.qjournal.server.JournalNodeRpcServer.journal(JournalNodeRpcServer.java:142)
>  at
> org.apache.hadoop.hdfs.qjournal.protocolPB.QJournalProtocolServerSideTranslatorPB.journal(QJournalProtocolServerSideTranslatorPB.java:132)
> at
> org.apache.hadoop.hdfs.qjournal.protocol.QJournalProtocolProtos$QJournalProtocolService$2.callBlockingMethod(QJournalProtocolProtos.java:14018)
>  at
> org.apache.hadoop.ipc.ProtobufRpcEngine$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$1.run(Server.java:1689)
>  at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:415)
>  at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1332)
> at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1687)
>
> at org.apache.hadoop.ipc.Client.call(Client.java:1224)
> at
> org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:202)
>  at com.sun.proxy.$Proxy9.journal(Unknown Source)
> at
> org.apache.hadoop.hdfs.qjournal.protocolPB.QJournalProtocolTranslatorPB.journal(QJournalProtocolTranslatorPB.java:156)
>  at
> org.apache.hadoop.hdfs.qjournal.client.IPCLoggerChannel$7.call(IPCLoggerChannel.java:354)
> at
> org.apache.hadoop.hdfs.qjournal.client.IPCLoggerChannel$7.call(IPCLoggerChannel.java:347)
>  at java.util.concurrent.FutureTask.run(FutureTask.java:262)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>  at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> at java.lang.Thread.run(Thread.java:745)
> 2014-07-31 20:59:33,975 WARN  [Logger channel to rhel2.local/
> 10.120.5.25:8485] client.QuorumJournalManager
> (IPCLoggerChannel.java:call(357)) - Remote journal 10.120.5.25:8485
> failed to write txns 9635-9635. Will try to write to this JN again after
> the next log roll.
> org.apache.hadoop.ipc.RemoteException(java.io.IOException): IPC's epoch 5
> is not the current writer epoch  0
> at
> org.apache.hadoop.hdfs.qjournal.server.Journal.checkWriteRequest(Journal.java:430)
>  at
> org.apache.hadoop.hdfs.qjournal.server.Journal.journal(Journal.java:331)
> at
> org.apache.hadoop.hdfs.qjournal.server.JournalNodeRpcServer.journal(JournalNodeRpcServer.java:142)
>  at
> org.apache.hadoop.hdfs.qjournal.protocolPB.QJournalProtocolServerSideTranslatorPB.journal(QJournalProtocolServerSideTranslatorPB.java:132)
> at
> org.apache.hadoop.hdfs.qjournal.protocol.QJournalProtocolProtos$QJournalProtocolService$2.callBlockingMethod(QJournalProtocolProtos.java:14018)
>  at
> org.apache.hadoop.ipc.ProtobufRpcEngine$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$1.run(Server.java:1689)
>  at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:415)
>  at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1332)
> at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1687)
>
> at org.apache.hadoop.ipc.Client.call(Client.java:1224)
> at
> org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:202)
>  at com.sun.proxy.$Proxy9.journal(Unknown Source)
> at
> org.apache.hadoop.hdfs.qjournal.protocolPB.QJournalProtocolTranslatorPB.journal(QJournalProtocolTranslatorPB.java:156)
>  at
> org.apache.hadoop.hdfs.qjournal.client.IPCLoggerChannel$7.call(IPCLoggerChannel.java:354)
> at
> org.apache.hadoop.hdfs.qjournal.client.IPCLoggerChannel$7.call(IPCLoggerChannel.java:347)
>  at java.util.concurrent.FutureTask.run(FutureTask.java:262)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>  at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> at java.lang.Thread.run(Thread.java:745)
> 2014-07-31 20:59:33,976 FATAL [IPC Server handler 5 on 8020]
> namenode.FSEditLog (JournalSet.java:mapJournalsAndReportErrors(355)) -
> Error: flush failed for required journal (JournalAndStream(mgr=QJM to [
> 10.120.5.203:8485, 10.120.5.247:8485, 10.120.5.25:8485],
> stream=QuorumOutputStream starting at txid 9634))
> org.apache.hadoop.hdfs.qjournal.client.QuorumException: Got too many
> exceptions to achieve quorum size 2/3. 3 exceptions thrown:
> 10.120.5.25:8485: IPC's epoch 5 is not the current writer epoch  0
>  at
> org.apache.hadoop.hdfs.qjournal.server.Journal.checkWriteRequest(Journal.java:430)
> at org.apache.hadoop.hdfs.qjournal.server.Journal.journal(Journal.java:331)
>  at
> org.apache.hadoop.hdfs.qjournal.server.JournalNodeRpcServer.journal(JournalNodeRpcServer.java:142)
> at
> org.apache.hadoop.hdfs.qjournal.protocolPB.QJournalProtocolServerSideTranslatorPB.journal(QJournalProtocolServerSideTranslatorPB.java:132)
>  at
> org.apache.hadoop.hdfs.qjournal.protocol.QJournalProtocolProtos$QJournalProtocolService$2.callBlockingMethod(QJournalProtocolProtos.java:14018)
> at
> org.apache.hadoop.ipc.ProtobufRpcEngine$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$1.run(Server.java:1689)
> at java.security.AccessController.doPrivileged(Native Method)
>  at javax.security.auth.Subject.doAs(Subject.java:415)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1332)
>  at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1687)
>
> 10.120.5.203:8485: IPC's epoch 5 is not the current writer epoch  0
>  at
> org.apache.hadoop.hdfs.qjournal.server.Journal.checkWriteRequest(Journal.java:430)
> at org.apache.hadoop.hdfs.qjournal.server.Journal.journal(Journal.java:331)
>  at
> org.apache.hadoop.hdfs.qjournal.server.JournalNodeRpcServer.journal(JournalNodeRpcServer.java:142)
> at
> org.apache.hadoop.hdfs.qjournal.protocolPB.QJournalProtocolServerSideTranslatorPB.journal(QJournalProtocolServerSideTranslatorPB.java:132)
>  at
> org.apache.hadoop.hdfs.qjournal.protocol.QJournalProtocolProtos$QJournalProtocolService$2.callBlockingMethod(QJournalProtocolProtos.java:14018)
> at
> org.apache.hadoop.ipc.ProtobufRpcEngine$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$1.run(Server.java:1689)
> at java.security.AccessController.doPrivileged(Native Method)
>  at javax.security.auth.Subject.doAs(Subject.java:415)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1332)
>  at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1687)
>
> 10.120.5.247:8485: IPC's epoch 5 is not the current writer epoch  0
>  at
> org.apache.hadoop.hdfs.qjournal.server.Journal.checkWriteRequest(Journal.java:430)
> at org.apache.hadoop.hdfs.qjournal.server.Journal.journal(Journal.java:331)
>  at
> org.apache.hadoop.hdfs.qjournal.server.JournalNodeRpcServer.journal(JournalNodeRpcServer.java:142)
> at
> org.apache.hadoop.hdfs.qjournal.protocolPB.QJournalProtocolServerSideTranslatorPB.journal(QJournalProtocolServerSideTranslatorPB.java:132)
>  at
> org.apache.hadoop.hdfs.qjournal.protocol.QJournalProtocolProtos$QJournalProtocolService$2.callBlockingMethod(QJournalProtocolProtos.java:14018)
> at
> org.apache.hadoop.ipc.ProtobufRpcEngine$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$1.run(Server.java:1689)
> at java.security.AccessController.doPrivileged(Native Method)
>  at javax.security.auth.Subject.doAs(Subject.java:415)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1332)
>  at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1687)
>
> at
> org.apache.hadoop.hdfs.qjournal.client.QuorumException.create(QuorumException.java:81)
>  at
> org.apache.hadoop.hdfs.qjournal.client.QuorumCall.rethrowException(QuorumCall.java:213)
> at
> org.apache.hadoop.hdfs.qjournal.client.AsyncLoggerSet.waitForWriteQuorum(AsyncLoggerSet.java:142)
>  at
> org.apache.hadoop.hdfs.qjournal.client.QuorumOutputStream.flushAndSync(QuorumOutputStream.java:107)
> at
> org.apache.hadoop.hdfs.server.namenode.EditLogOutputStream.flush(EditLogOutputStream.java:113)
>  at
> org.apache.hadoop.hdfs.server.namenode.EditLogOutputStream.flush(EditLogOutputStream.java:107)
> at
> org.apache.hadoop.hdfs.server.namenode.JournalSet$JournalSetOutputStream$8.apply(JournalSet.java:490)
>  at
> org.apache.hadoop.hdfs.server.namenode.JournalSet.mapJournalsAndReportErrors(JournalSet.java:350)
> at
> org.apache.hadoop.hdfs.server.namenode.JournalSet.access$100(JournalSet.java:55)
>  at
> org.apache.hadoop.hdfs.server.namenode.JournalSet$JournalSetOutputStream.flush(JournalSet.java:486)
> at
> org.apache.hadoop.hdfs.server.namenode.FSEditLog.logSync(FSEditLog.java:581)
>  at
> org.apache.hadoop.hdfs.server.namenode.FSEditLog.endCurrentLogSegment(FSEditLog.java:946)
> at
> org.apache.hadoop.hdfs.server.namenode.FSEditLog.rollEditLog(FSEditLog.java:884)
>  at
> org.apache.hadoop.hdfs.server.namenode.FSImage.rollEditLog(FSImage.java:1013)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.rollEditLog(FSNamesystem.java:4436)
>  at
> org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.rollEditLog(NameNodeRpcServer.java:734)
> at
> org.apache.hadoop.hdfs.protocolPB.NamenodeProtocolServerSideTranslatorPB.rollEditLog(NamenodeProtocolServerSideTranslatorPB.java:129)
>  at
> org.apache.hadoop.hdfs.protocol.proto.NamenodeProtocolProtos$NamenodeProtocolService$2.callBlockingMethod(NamenodeProtocolProtos.java:8762)
> at
> org.apache.hadoop.ipc.ProtobufRpcEngine$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$1.run(Server.java:1689)
> at java.security.AccessController.doPrivileged(Native Method)
>  at javax.security.auth.Subject.doAs(Subject.java:415)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1332)
>  at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1687)
> 2014-07-31 20:59:33,976 WARN  [IPC Server handler 5 on 8020]
> client.QuorumJournalManager (QuorumOutputStream.java:abort(72)) - Aborting
> QuorumOutputStream starting at txid 9634
> 2014-07-31 20:59:33,978 INFO  [IPC Server handler 5 on 8020] util.ExitUtil
> (ExitUtil.java:terminate(87)) - Exiting with status 1
> 2014-07-31 20:59:33,982 INFO  [Thread-0] namenode.NameNode
> (StringUtils.java:run(615)) - SHUTDOWN_MSG:
>
>
>
> On Thu, Jul 31, 2014 at 6:08 PM, Colin Kincaid Williams <discord@uw.edu>
> wrote:
>
>> I tried a third time and it just worked?
>>
>> sudo hdfs zkfc -formatZK
>> 2014-07-31 18:07:51,595 INFO  [main] tools.DFSZKFailoverController
>> (DFSZKFailoverController.java:<init>(140)) - Failover controller configured
>> for NameNode NameNode at rhel1.local/10.120.5.203:8020
>> 2014-07-31 18:07:51,791 INFO  [main] zookeeper.ZooKeeper
>> (Environment.java:logEnv(100)) - Client
>> environment:zookeeper.version=3.4.3-cdh4.1.3--1, built on 01/27/2013 00:13
>> GMT
>> 2014-07-31 18:07:51,791 INFO  [main] zookeeper.ZooKeeper
>> (Environment.java:logEnv(100)) - Client environment:host.name=rhel1.local
>> 2014-07-31 18:07:51,792 INFO  [main] zookeeper.ZooKeeper
>> (Environment.java:logEnv(100)) - Client environment:java.version=1.7.0_60
>> 2014-07-31 18:07:51,792 INFO  [main] zookeeper.ZooKeeper
>> (Environment.java:logEnv(100)) - Client environment:java.vendor=Oracle
>> Corporation
>> 2014-07-31 18:07:51,792 INFO  [main] zookeeper.ZooKeeper
>> (Environment.java:logEnv(100)) - Client
>> environment:java.home=/usr/java/jdk1.7.0_60/jre
>> 2014-07-31 18:07:51,792 INFO  [main] zookeeper.ZooKeeper
>> (Environment.java:logEnv(100)) - Client
>> environment:java.class.path=/etc/hadoop/conf:/usr/lib/hadoop/lib/jersey-core-1.8.jar:/usr/lib/hadoop/lib/commons-cli-1.2.jar:/usr/lib/hadoop/lib/jaxb-impl-2.2.3-1.jar:/usr/lib/hadoop/lib/jackson-mapper-asl-1.8.8.jar:/usr/lib/hadoop/lib/jsch-0.1.42.jar:/usr/lib/hadoop/lib/asm-3.2.jar:/usr/lib/hadoop/lib/kfs-0.3.jar:/usr/lib/hadoop/lib/jsr305-1.3.9.jar:/usr/lib/hadoop/lib/commons-logging-1.1.1.jar:/usr/lib/hadoop/lib/jets3t-0.6.1.jar:/usr/lib/hadoop/lib/xmlenc-0.52.jar:/usr/lib/hadoop/lib/jetty-6.1.26.cloudera.2.jar:/usr/lib/hadoop/lib/jsp-api-2.1.jar:/usr/lib/hadoop/lib/commons-collections-3.2.1.jar:/usr/lib/hadoop/lib/jackson-core-asl-1.8.8.jar:/usr/lib/hadoop/lib/guava-11.0.2.jar:/usr/lib/hadoop/lib/zookeeper-3.4.3-cdh4.1.3.jar:/usr/lib/hadoop/lib/servlet-api-2.5.jar:/usr/lib/hadoop/lib/log4j-1.2.17.jar:/usr/lib/hadoop/lib/avro-1.7.1.cloudera.2.jar:/usr/lib/hadoop/lib/jersey-server-1.8.jar:/usr/lib/hadoop/lib/jasper-compiler-5.5.23.jar:/usr/lib/hadoop/lib/jackson-jaxrs-1.8.8.jar:/usr/lib/hadoop/lib/jline-0.9.94.jar:/usr/lib/hadoop/lib/commons-el-1.0.jar:/usr/lib/hadoop/lib/commons-io-2.1.jar:/usr/lib/hadoop/lib/commons-configuration-1.6.jar:/usr/lib/hadoop/lib/commons-net-3.1.jar:/usr/lib/hadoop/lib/jackson-xc-1.8.8.jar:/usr/lib/hadoop/lib/jasper-runtime-5.5.23.jar:/usr/lib/hadoop/lib/commons-digester-1.8.jar:/usr/lib/hadoop/lib/slf4j-api-1.6.1.jar:/usr/lib/hadoop/lib/commons-beanutils-core-1.8.0.jar:/usr/lib/hadoop/lib/commons-httpclient-3.1.jar:/usr/lib/hadoop/lib/activation-1.1.jar:/usr/lib/hadoop/lib/jetty-util-6.1.26.cloudera.2.jar:/usr/lib/hadoop/lib/commons-beanutils-1.7.0.jar:/usr/lib/hadoop/lib/commons-lang-2.5.jar:/usr/lib/hadoop/lib/snappy-java-1.0.4.1.jar:/usr/lib/hadoop/lib/junit-4.8.2.jar:/usr/lib/hadoop/lib/stax-api-1.0.1.jar:/usr/lib/hadoop/lib/commons-math-2.1.jar:/usr/lib/hadoop/lib/mockito-all-1.8.5.jar:/usr/lib/hadoop/lib/jettison-1.1.jar:/usr/lib/hadoop/lib/jaxb-api-2.2.2.jar:/usr/lib/hadoop/lib/paranamer-2.3.jar:/usr/lib/hadoop/lib/protobuf-java-2.4.0a.jar:/usr/lib/hadoop/lib/jersey-json-1.8.jar:/usr/lib/hadoop/lib/slf4j-log4j12-1.6.1.jar:/usr/lib/hadoop/lib/commons-codec-1.4.jar:/usr/lib/hadoop/.//hadoop-annotations-2.0.0-cdh4.1.3.jar:/usr/lib/hadoop/.//hadoop-common.jar:/usr/lib/hadoop/.//hadoop-common-2.0.0-cdh4.1.3-tests.jar:/usr/lib/hadoop/.//hadoop-common-2.0.0-cdh4.1.3.jar:/usr/lib/hadoop/.//hadoop-annotations.jar:/usr/lib/hadoop/.//hadoop-auth-2.0.0-cdh4.1.3.jar:/usr/lib/hadoop/.//hadoop-auth.jar:/usr/lib/hadoop-hdfs/./:/usr/lib/hadoop-hdfs/lib/jersey-core-1.8.jar:/usr/lib/hadoop-hdfs/lib/commons-cli-1.2.jar:/usr/lib/hadoop-hdfs/lib/jackson-mapper-asl-1.8.8.jar:/usr/lib/hadoop-hdfs/lib/asm-3.2.jar:/usr/lib/hadoop-hdfs/lib/jsr305-1.3.9.jar:/usr/lib/hadoop-hdfs/lib/commons-logging-1.1.1.jar:/usr/lib/hadoop-hdfs/lib/xmlenc-0.52.jar:/usr/lib/hadoop-hdfs/lib/jetty-6.1.26.cloudera.2.jar:/usr/lib/hadoop-hdfs/lib/jsp-api-2.1.jar:/usr/lib/hadoop-hdfs/lib/jackson-core-asl-1.8.8.jar:/usr/lib/hadoop-hdfs/lib/guava-11.0.2.jar:/usr/lib/hadoop-hdfs/lib/zookeeper-3.4.3-cdh4.1.3.jar:/usr/lib/hadoop-hdfs/lib/servlet-api-2.5.jar:/usr/lib/hadoop-hdfs/lib/log4j-1.2.17.jar:/usr/lib/hadoop-hdfs/lib/jersey-server-1.8.jar:/usr/lib/hadoop-hdfs/lib/jline-0.9.94.jar:/usr/lib/hadoop-hdfs/lib/commons-el-1.0.jar:/usr/lib/hadoop-hdfs/lib/commons-io-2.1.jar:/usr/lib/hadoop-hdfs/lib/commons-daemon-1.0.3.jar:/usr/lib/hadoop-hdfs/lib/jasper-runtime-5.5.23.jar:/usr/lib/hadoop-hdfs/lib/jetty-util-6.1.26.cloudera.2.jar:/usr/lib/hadoop-hdfs/lib/commons-lang-2.5.jar:/usr/lib/hadoop-hdfs/lib/protobuf-java-2.4.0a.jar:/usr/lib/hadoop-hdfs/lib/commons-codec-1.4.jar:/usr/lib/hadoop-hdfs/.//hadoop-hdfs-2.0.0-cdh4.1.3.jar:/usr/lib/hadoop-hdfs/.//hadoop-hdfs-2.0.0-cdh4.1.3-tests.jar:/usr/lib/hadoop-hdfs/.//hadoop-hdfs.jar:/usr/lib/hadoop-yarn/lib/jersey-core-1.8.jar:/usr/lib/hadoop-yarn/lib/jackson-mapper-asl-1.8.8.jar:/usr/lib/hadoop-yarn/lib/asm-3.2.jar:/usr/lib/hadoop-yarn/lib/netty-3.2.4.Final.jar:/usr/lib/hadoop-yarn/lib/jackson-core-asl-1.8.8.jar:/usr/lib/hadoop-yarn/lib/jersey-guice-1.8.jar:/usr/lib/hadoop-yarn/lib/log4j-1.2.17.jar:/usr/lib/hadoop-yarn/lib/avro-1.7.1.cloudera.2.jar:/usr/lib/hadoop-yarn/lib/jersey-server-1.8.jar:/usr/lib/hadoop-yarn/lib/guice-3.0.jar:/usr/lib/hadoop-yarn/lib/commons-io-2.1.jar:/usr/lib/hadoop-yarn/lib/aopalliance-1.0.jar:/usr/lib/hadoop-yarn/lib/javax.inject-1.jar:/usr/lib/hadoop-yarn/lib/snappy-java-1.0.4.1.jar:/usr/lib/hadoop-yarn/lib/guice-servlet-3.0.jar:/usr/lib/hadoop-yarn/lib/paranamer-2.3.jar:/usr/lib/hadoop-yarn/lib/protobuf-java-2.4.0a.jar:/usr/lib/hadoop-yarn/.//hadoop-yarn-applications-distributedshell.jar:/usr/lib/hadoop-yarn/.//hadoop-yarn-api-2.0.0-cdh4.1.3.jar:/usr/lib/hadoop-yarn/.//hadoop-yarn-site-2.0.0-cdh4.1.3.jar:/usr/lib/hadoop-yarn/.//hadoop-yarn-common-2.0.0-cdh4.1.3.jar:/usr/lib/hadoop-yarn/.//hadoop-yarn-api.jar:/usr/lib/hadoop-yarn/.//hadoop-yarn-site.jar:/usr/lib/hadoop-yarn/.//hadoop-yarn-server-nodemanager.jar:/usr/lib/hadoop-yarn/.//hadoop-yarn-server-tests.jar:/usr/lib/hadoop-yarn/.//hadoop-yarn-server-tests-2.0.0-cdh4.1.3.jar:/usr/lib/hadoop-yarn/.//hadoop-yarn-server-common.jar:/usr/lib/hadoop-yarn/.//hadoop-yarn-applications-distributedshell-2.0.0-cdh4.1.3.jar:/usr/lib/hadoop-yarn/.//hadoop-yarn-server-web-proxy-2.0.0-cdh4.1.3.jar:/usr/lib/hadoop-yarn/.//hadoop-yarn-server-tests-2.0.0-cdh4.1.3-tests.jar:/usr/lib/hadoop-yarn/.//hadoop-yarn-server-resourcemanager.jar:/usr/lib/hadoop-yarn/.//hadoop-yarn-server-web-proxy.jar:/usr/lib/hadoop-yarn/.//hadoop-yarn-server-resourcemanager-2.0.0-cdh4.1.3.jar:/usr/lib/hadoop-yarn/.//hadoop-yarn-server-common-2.0.0-cdh4.1.3.jar:/usr/lib/hadoop-yarn/.//hadoop-yarn-server-nodemanager-2.0.0-cdh4.1.3.jar:/usr/lib/hadoop-yarn/.//hadoop-yarn-common.jar:/usr/lib/hadoop-0.20-mapreduce/./:/usr/lib/hadoop-0.20-mapreduce/lib/jersey-core-1.8.jar:/usr/lib/hadoop-0.20-mapreduce/lib/ant-contrib-1.0b3.jar:/usr/lib/hadoop-0.20-mapreduce/lib/commons-cli-1.2.jar:/usr/lib/hadoop-0.20-mapreduce/lib/aspectjrt-1.6.5.jar:/usr/lib/hadoop-0.20-mapreduce/lib/jaxb-impl-2.2.3-1.jar:/usr/lib/hadoop-0.20-mapreduce/lib/jackson-mapper-asl-1.8.8.jar:/usr/lib/hadoop-0.20-mapreduce/lib/jsch-0.1.42.jar:/usr/lib/hadoop-0.20-mapreduce/lib/asm-3.2.jar:/usr/lib/hadoop-0.20-mapreduce/lib/kfs-0.3.jar:/usr/lib/hadoop-0.20-mapreduce/lib/jsr305-1.3.9.jar:/usr/lib/hadoop-0.20-mapreduce/lib/commons-logging-1.1.1.jar:/usr/lib/hadoop-0.20-mapreduce/lib/jets3t-0.6.1.jar:/usr/lib/hadoop-0.20-mapreduce/lib/xmlenc-0.52.jar:/usr/lib/hadoop-0.20-mapreduce/lib/jetty-6.1.26.cloudera.2.jar:/usr/lib/hadoop-0.20-mapreduce/lib/jsp-api-2.1.jar:/usr/lib/hadoop-0.20-mapreduce/lib/commons-collections-3.2.1.jar:/usr/lib/hadoop-0.20-mapreduce/lib/jackson-core-asl-1.8.8.jar:/usr/lib/hadoop-0.20-mapreduce/lib/guava-11.0.2.jar:/usr/lib/hadoop-0.20-mapreduce/lib/servlet-api-2.5.jar:/usr/lib/hadoop-0.20-mapreduce/lib/log4j-1.2.17.jar:/usr/lib/hadoop-0.20-mapreduce/lib/avro-1.7.1.cloudera.2.jar:/usr/lib/hadoop-0.20-mapreduce/lib/jersey-server-1.8.jar:/usr/lib/hadoop-0.20-mapreduce/lib/jasper-compiler-5.5.23.jar:/usr/lib/hadoop-0.20-mapreduce/lib/jackson-jaxrs-1.8.8.jar:/usr/lib/hadoop-0.20-mapreduce/lib/commons-el-1.0.jar:/usr/lib/hadoop-0.20-mapreduce/lib/commons-io-2.1.jar:/usr/lib/hadoop-0.20-mapreduce/lib/commons-configuration-1.6.jar:/usr/lib/hadoop-0.20-mapreduce/lib/aspectjtools-1.6.5.jar:/usr/lib/hadoop-0.20-mapreduce/lib/commons-net-3.1.jar:/usr/lib/hadoop-0.20-mapreduce/lib/jackson-xc-1.8.8.jar:/usr/lib/hadoop-0.20-mapreduce/lib/jasper-runtime-5.5.23.jar:/usr/lib/hadoop-0.20-mapreduce/lib/commons-digester-1.8.jar:/usr/lib/hadoop-0.20-mapreduce/lib/slf4j-api-1.6.1.jar:/usr/lib/hadoop-0.20-mapreduce/lib/commons-beanutils-core-1.8.0.jar:/usr/lib/hadoop-0.20-mapreduce/lib/commons-httpclient-3.1.jar:/usr/lib/hadoop-0.20-mapreduce/lib/kfs-0.2.2.jar:/usr/lib/hadoop-0.20-mapreduce/lib/activation-1.1.jar:/usr/lib/hadoop-0.20-mapreduce/lib/jetty-util-6.1.26.cloudera.2.jar:/usr/lib/hadoop-0.20-mapreduce/lib/commons-beanutils-1.7.0.jar:/usr/lib/hadoop-0.20-mapreduce/lib/commons-lang-2.5.jar:/usr/lib/hadoop-0.20-mapreduce/lib/avro-compiler-1.7.1.cloudera.2.jar:/usr/lib/hadoop-0.20-mapreduce/lib/snappy-java-1.0.4.1.jar:/usr/lib/hadoop-0.20-mapreduce/lib/junit-4.8.2.jar:/usr/lib/hadoop-0.20-mapreduce/lib/stax-api-1.0.1.jar:/usr/lib/hadoop-0.20-mapreduce/lib/commons-math-2.1.jar:/usr/lib/hadoop-0.20-mapreduce/lib/mockito-all-1.8.5.jar:/usr/lib/hadoop-0.20-mapreduce/lib/jettison-1.1.jar:/usr/lib/hadoop-0.20-mapreduce/lib/jaxb-api-2.2.2.jar:/usr/lib/hadoop-0.20-mapreduce/lib/hsqldb-1.8.0.10.jar:/usr/lib/hadoop-0.20-mapreduce/lib/paranamer-2.3.jar:/usr/lib/hadoop-0.20-mapreduce/lib/protobuf-java-2.4.0a.jar:/usr/lib/hadoop-0.20-mapreduce/lib/jersey-json-1.8.jar:/usr/lib/hadoop-0.20-mapreduce/lib/commons-codec-1.4.jar:/usr/lib/hadoop-0.20-mapreduce/lib/hadoop-fairscheduler-2.0.0-mr1-cdh4.1.3.jar:/usr/lib/hadoop-0.20-mapreduce/.//hadoop-examples-2.0.0-mr1-cdh4.1.3.jar:/usr/lib/hadoop-0.20-mapreduce/.//hadoop-2.0.0-mr1-cdh4.1.3-ant.jar:/usr/lib/hadoop-0.20-mapreduce/.//hadoop-ant-2.0.0-mr1-cdh4.1.3.jar:/usr/lib/hadoop-0.20-mapreduce/.//hadoop-ant.jar:/usr/lib/hadoop-0.20-mapreduce/.//hadoop-2.0.0-mr1-cdh4.1.3-core.jar:/usr/lib/hadoop-0.20-mapreduce/.//hadoop-test.jar:/usr/lib/hadoop-0.20-mapreduce/.//hadoop-tools.jar:/usr/lib/hadoop-0.20-mapreduce/.//hadoop-core-2.0.0-mr1-cdh4.1.3.jar:/usr/lib/hadoop-0.20-mapreduce/.//hadoop-2.0.0-mr1-cdh4.1.3-examples.jar:/usr/lib/hadoop-0.20-mapreduce/.//hadoop-test-2.0.0-mr1-cdh4.1.3.jar:/usr/lib/hadoop-0.20-mapreduce/.//hadoop-tools-2.0.0-mr1-cdh4.1.3.jar:/usr/lib/hadoop-0.20-mapreduce/.//hadoop-examples.jar:/usr/lib/hadoop-0.20-mapreduce/.//hadoop-2.0.0-mr1-cdh4.1.3-tools.jar:/usr/lib/hadoop-0.20-mapreduce/.//hadoop-2.0.0-mr1-cdh4.1.3-test.jar:/usr/lib/hadoop-0.20-mapreduce/.//hadoop-core.jar
>> 2014-07-31 18:07:51,793 INFO  [main] zookeeper.ZooKeeper
>> (Environment.java:logEnv(100)) - Client
>> environment:java.library.path=//usr/lib/hadoop/lib/native
>> 2014-07-31 18:07:51,801 INFO  [main] zookeeper.ZooKeeper
>> (Environment.java:logEnv(100)) - Client environment:java.io.tmpdir=/tmp
>> 2014-07-31 18:07:51,801 INFO  [main] zookeeper.ZooKeeper
>> (Environment.java:logEnv(100)) - Client environment:java.compiler=<NA>
>> 2014-07-31 18:07:51,801 INFO  [main] zookeeper.ZooKeeper
>> (Environment.java:logEnv(100)) - Client environment:os.name=Linux
>> 2014-07-31 18:07:51,802 INFO  [main] zookeeper.ZooKeeper
>> (Environment.java:logEnv(100)) - Client environment:os.arch=amd64
>> 2014-07-31 18:07:51,802 INFO  [main] zookeeper.ZooKeeper
>> (Environment.java:logEnv(100)) - Client
>> environment:os.version=2.6.32-358.el6.x86_64
>> 2014-07-31 18:07:51,802 INFO  [main] zookeeper.ZooKeeper
>> (Environment.java:logEnv(100)) - Client environment:user.name=root
>> 2014-07-31 18:07:51,802 INFO  [main] zookeeper.ZooKeeper
>> (Environment.java:logEnv(100)) - Client environment:user.home=/root
>> 2014-07-31 18:07:51,802 INFO  [main] zookeeper.ZooKeeper
>> (Environment.java:logEnv(100)) - Client
>> environment:user.dir=/etc/hbase/conf.golden_apple
>> 2014-07-31 18:07:51,813 INFO  [main] zookeeper.ZooKeeper
>> (ZooKeeper.java:<init>(433)) - Initiating client connection,
>> connectString=rhel1.local:2181,rhel6.local:2181,rhel2.local:2181
>> sessionTimeout=5000 watcher=null
>> 2014-07-31 18:07:51,833 INFO  [main-SendThread(rhel1.local:2181)]
>> zookeeper.ClientCnxn (ClientCnxn.java:logStartConnect(958)) - Opening
>> socket connection to server rhel1.local/10.120.5.203:2181. Will not
>> attempt to authenticate using SASL (unknown error)
>> 2014-07-31 18:07:51,844 INFO  [main-SendThread(rhel1.local:2181)]
>> zookeeper.ClientCnxn (ClientCnxn.java:primeConnection(850)) - Socket
>> connection established to rhel1.local/10.120.5.203:2181, initiating
>> session
>> 2014-07-31 18:07:51,852 INFO  [main-SendThread(rhel1.local:2181)]
>> zookeeper.ClientCnxn (ClientCnxn.java:onConnected(1187)) - Session
>> establishment complete on server rhel1.local/10.120.5.203:2181,
>> sessionid = 0x1478902fddc000a, negotiated timeout = 5000
>>  ===============================================
>> The configured parent znode /hadoop-ha/golden-apple already exists.
>> Are you sure you want to clear all failover information from
>> ZooKeeper?
>> WARNING: Before proceeding, ensure that all HDFS services and
>> failover controllers are stopped!
>> ===============================================
>> Proceed formatting /hadoop-ha/golden-apple? (Y or N) 2014-07-31
>> 18:07:51,858 INFO  [main-EventThread] ha.ActiveStandbyElector
>> (ActiveStandbyElector.java:processWatchEvent(538)) - Session connected.
>> Y
>> 2014-07-31 18:08:00,439 INFO  [main] ha.ActiveStandbyElector
>> (ActiveStandbyElector.java:clearParentZNode(314)) - Recursively deleting
>> /hadoop-ha/golden-apple from ZK...
>> 2014-07-31 18:08:00,506 INFO  [main] ha.ActiveStandbyElector
>> (ActiveStandbyElector.java:clearParentZNode(327)) - Successfully deleted
>> /hadoop-ha/golden-apple from ZK.
>> 2014-07-31 18:08:00,541 INFO  [main] ha.ActiveStandbyElector
>> (ActiveStandbyElector.java:ensureParentZNode(299)) - Successfully created
>> /hadoop-ha/golden-apple in ZK.
>> 2014-07-31 18:08:00,545 INFO  [main-EventThread] zookeeper.ClientCnxn
>> (ClientCnxn.java:run(511)) - EventThread shut down
>> 2014-07-31 18:08:00,545 INFO  [main] zookeeper.ZooKeeper
>> (ZooKeeper.java:close(679)) - Session: 0x1478902fddc000a closed
>>
>>
>>
>> On Thu, Jul 31, 2014 at 2:51 PM, Alex Newman <posix4e@gmail.com> wrote:
>>
>>> Cheers. That's rough. We don't have that problem here at WanDISCO.
>>>
>>> On Thu, Jul 31, 2014 at 12:46 PM, Colin Kincaid Williams <discord@uw.edu>
>>> wrote:
>>> > Hi this is drocsid / discord from #hbase. Thanks for the help earlier
>>> today.
>>> > Just thought I'd forward this info regarding swapping out the NameNode
>>> in a
>>> > QJM / HA configuration. See you around on #hbase. If you visit
>>> Seattle, feel
>>> > free to give me a shout out.
>>> >
>>> > ---------- Forwarded message ----------
>>> > From: Colin Kincaid Williams <discord@uw.edu>
>>> > Date: Thu, Jul 31, 2014 at 12:35 PM
>>> > Subject: Re: Juggling or swaping out the standby NameNode in a QJM / HA
>>> > configuration
>>> > To: user@hadoop.apache.org
>>> >
>>> >
>>> > Hi Jing,
>>> >
>>> > Thanks for the response. I will try this out, and file an Apache jira.
>>> >
>>> > Best,
>>> >
>>> > Colin Williams
>>> >
>>> >
>>> > On Thu, Jul 31, 2014 at 11:19 AM, Jing Zhao <jing@hortonworks.com>
>>> wrote:
>>> >>
>>> >> Hi Colin,
>>> >>
>>> >>     I guess currently we may have to restart almost all the
>>> >> daemons/services in order to swap out a standby NameNode (SBN):
>>> >>
>>> >> 1. The current active NameNode (ANN) needs to know the new SBN since
>>> in
>>> >> the current implementation the SBN tries to send rollEditLog RPC
>>> request to
>>> >> ANN periodically (thus if a NN failover happens later, the original
>>> ANN
>>> >> needs to send this RPC to the correct NN).
>>> >> 2. Looks like the DataNode currently cannot do real refreshment for
>>> NN.
>>> >> Look at the code in BPOfferService:
>>> >>
>>> >>   void refreshNNList(ArrayList<InetSocketAddress> addrs) throws
>>> >> IOException {
>>> >>     Set<InetSocketAddress> oldAddrs = Sets.newHashSet();
>>> >>     for (BPServiceActor actor : bpServices) {
>>> >>       oldAddrs.add(actor.getNNSocketAddress());
>>> >>     }
>>> >>     Set<InetSocketAddress> newAddrs = Sets.newHashSet(addrs);
>>> >>
>>> >>     if (!Sets.symmetricDifference(oldAddrs, newAddrs).isEmpty()) {
>>> >>       // Keep things simple for now -- we can implement this at a
>>> later
>>> >> date.
>>> >>       throw new IOException(
>>> >>           "HA does not currently support adding a new standby to a
>>> running
>>> >> DN. " +
>>> >>           "Please do a rolling restart of DNs to reconfigure the list
>>> of
>>> >> NNs.");
>>> >>     }
>>> >>   }
>>> >>
>>> >> 3. If you're using automatic failover, you also need to update the
>>> >> configuration of the ZKFC on the current ANN machine, since ZKFC will
>>> do
>>> >> gracefully fencing by sending RPC to the other NN.
>>> >> 4. Looks like we do not need to restart JournalNodes for the new SBN
>>> but I
>>> >> have not tried before.
>>> >>
>>> >>     Thus in general we may still have to restart all the services
>>> (except
>>> >> JNs) and update their configurations. But this may be a rolling
>>> restart
>>> >> process I guess:
>>> >> 1. Shutdown the old SBN, bootstrap the new SBN, and start the new SBN.
>>> >> 2. Keep the ANN and its corresponding ZKFC running, do a rolling
>>> restart
>>> >> of all the DN to update their configurations
>>> >> 3. After restarting all the DN, stop ANN and the ZKFC, and update
>>> their
>>> >> configuration. The new SBN should become active.
>>> >>
>>> >>     I have not tried the upper steps, thus please let me know if this
>>> >> works or not. And I think we should also document the correct steps
in
>>> >> Apache. Could you please file an Apache jira?
>>> >>
>>> >> Thanks,
>>> >> -Jing
>>> >>
>>> >>
>>> >>
>>> >> On Thu, Jul 31, 2014 at 9:37 AM, Colin Kincaid Williams <
>>> discord@uw.edu>
>>> >> wrote:
>>> >>>
>>> >>> Hello,
>>> >>>
>>> >>> I'm trying to swap out a standby NameNode in a QJM / HA
>>> configuration. I
>>> >>> believe the steps to achieve this would be something similar to:
>>> >>>
>>> >>> Use the Bootstrap standby command to prep the replacment standby.
Or
>>> >>> rsync if the command fails.
>>> >>>
>>> >>> Somehow update the datanodes, so they push the heartbeat / journal
>>> to the
>>> >>> new standby
>>> >>>
>>> >>> Update the xml configuration on all nodes to reflect the replacment
>>> >>> standby.
>>> >>>
>>> >>> Start the replacment standby
>>> >>>
>>> >>> Use some hadoop command to refresh the datanodes to the new NameNode
>>> >>> configuration.
>>> >>>
>>> >>> I am not sure how to deal with the Journal switch, or if I am going
>>> about
>>> >>> this the right way. Can anybody give me some suggestions here?
>>> >>>
>>> >>>
>>> >>> Regards,
>>> >>>
>>> >>> Colin Williams
>>> >>>
>>> >>
>>> >>
>>> >> CONFIDENTIALITY NOTICE
>>> >> NOTICE: This message is intended for the use of the individual or
>>> entity
>>> >> to which it is addressed and may contain information that is
>>> confidential,
>>> >> privileged and exempt from disclosure under applicable law. If the
>>> reader of
>>> >> this message is not the intended recipient, you are hereby notified
>>> that any
>>> >> printing, copying, dissemination, distribution, disclosure or
>>> forwarding of
>>> >> this communication is strictly prohibited. If you have received this
>>> >> communication in error, please contact the sender immediately and
>>> delete it
>>> >> from your system. Thank You.
>>> >
>>> >
>>> >
>>>
>>
>>
>

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