[HDFS-3840] JournalNodes log JournalNotFormattedException backtrace error before being formatted

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: QuorumJournalManager (HDFS-3077)
• Fix Version/s: QuorumJournalManager (HDFS-3077)
• Target Version/s: QuorumJournalManager (HDFS-3077)
• Hadoop Flags: Reviewed
• Assignee: Todd Lipcon
• Reporter: Stephen Chu
• Created: 22/Aug/12 19:21
• Updated: 11/Sep/12 06:34
• Resolved: 11/Sep/12 06:34

Description

I started 3 JournalNodes for the first time. Then I formatted the NN. The JournalNodes, log the following error backtrace:

[root@cs-10-20-193-121 ~]# sudo -u hdfs hdfs journalnode
12/08/22 00:52:22 INFO impl.MetricsConfig: loaded properties from hadoop-metrics2.properties
12/08/22 00:52:22 INFO impl.MetricsSystemImpl: Scheduled snapshot period at 10 second(s).
12/08/22 00:52:22 INFO impl.MetricsSystemImpl: JournalNode metrics system started
12/08/22 00:52:22 INFO server.JournalNodeHttpServer: Starting web server as: hdfs
12/08/22 00:52:22 INFO mortbay.log: Logging to org.slf4j.impl.Log4jLoggerAdapter(org.mortbay.log) via org.mortbay.log.Slf4jLog
12/08/22 00:52:22 INFO http.HttpServer: Added global filter 'safety' (class=org.apache.hadoop.http.HttpServer$QuotingInputFilter)
12/08/22 00:52:22 INFO http.HttpServer: Added filter static_user_filter (class=org.apache.hadoop.http.lib.StaticUserWebFilter$StaticUserFilter) to context journal
12/08/22 00:52:22 INFO http.HttpServer: Added filter static_user_filter (class=org.apache.hadoop.http.lib.StaticUserWebFilter$StaticUserFilter) to context static
12/08/22 00:52:22 INFO http.HttpServer: Added filter static_user_filter (class=org.apache.hadoop.http.lib.StaticUserWebFilter$StaticUserFilter) to context logs
12/08/22 00:52:22 INFO http.HttpServer: Jetty bound to port 8480
12/08/22 00:52:22 INFO mortbay.log: jetty-6.1.26.cloudera.1
12/08/22 00:52:23 INFO mortbay.log: Started [e-mail]:8480
12/08/22 00:52:23 INFO server.JournalNodeHttpServer: Journal Web-server up at: qjm6.cs1cloud.internal/10.20.193.121:8480:8480
12/08/22 00:52:23 INFO ipc.Server: Starting Socket Reader #1 for port 8485
12/08/22 00:52:23 INFO ipc.Server: IPC Server Responder: starting
12/08/22 00:52:23 INFO ipc.Server: IPC Server listener on 8485: starting
12/08/22 00:52:41 INFO server.JournalNode: Initializing journal in directory /dfs/jn/journal
12/08/22 00:52:41 INFO common.Storage: Storage directory /dfs/jn/journal does not exist.
12/08/22 00:52:41 ERROR security.UserGroupInformation: PriviledgedActionException as:hdfs (auth:SIMPLE) cause:org.apache.hadoop.hdfs.qjournal.protocol.JournalNotFormattedException: Journal lv=0;cid=;nsid=0;c=0 not formatted
12/08/22 00:52:41 INFO ipc.Server: IPC Server handler 0 on 8485, call org.apache.hadoop.hdfs.qjournal.protocol.QJournalProtocol.getJournalState from 10.20.187.169:44857: error: org.apache.hadoop.hdfs.qjournal.protocol.JournalNotFormattedException: Journal lv=0;cid=;nsid=0;c=0 not formatted
org.apache.hadoop.hdfs.qjournal.protocol.JournalNotFormattedException: Journal lv=0;cid=;nsid=0;c=0 not formatted
        at org.apache.hadoop.hdfs.qjournal.server.Journal.checkFormatted(Journal.java:265)
        at org.apache.hadoop.hdfs.qjournal.server.Journal.getLastPromisedEpoch(Journal.java:152)
        at org.apache.hadoop.hdfs.qjournal.server.JournalNodeRpcServer.getJournalState(JournalNodeRpcServer.java:97)
        at org.apache.hadoop.hdfs.qjournal.protocolPB.QJournalProtocolServerSideTranslatorPB.getJournalState(QJournalProtocolServerSideTranslatorPB.java:71)
        at org.apache.hadoop.hdfs.qjournal.protocol.QJournalProtocolProtos$QJournalProtocolService$2.callBlockingMethod(QJournalProtocolProtos.java:12230)
        at org.apache.hadoop.ipc.ProtobufRpcEngine$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)
12/08/22 00:52:41 INFO server.Journal: Formatting org.apache.hadoop.hdfs.qjournal.server.Journal@61128f5a with namespace info: lv=-40;cid=CID-296bea3a-f126-4e91-aa64-477b37e505f4;nsid=1541406824;c=0;bpid=BP-998067398-10.20.187.169-1345621962294
12/08/22 00:52:41 INFO common.Storage: Formatting journal storage directory Storage Directory /dfs/jn/journal with nsid: 1541406824
12/08/22 00:52:42 INFO common.Storage: Lock on /dfs/jn/journal/in_use.lock acquired by nodename [e-mail]
12/08/22 01:06:52 INFO server.Journal: Scanning storage FileJournalManager(root=/dfs/jn/journal)

Seems like we should not log this backtrace in this startup scenario? When I read it, I was confused and thought there might have been a problem, but the JN was formatted fine.