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From "Varun Saxena (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-5297) Avoid printing a stack trace when recovering an app after the RM restarts
Date Fri, 08 Jul 2016 17:45:11 GMT

    [ https://issues.apache.org/jira/browse/YARN-5297?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15368048#comment-15368048
] 

Varun Saxena commented on YARN-5297:
------------------------------------

[~djp], should we be removing the audit log ? Typically in production, audit logs will go
into a separate log file. And some people may use it as an input in some of their tools as
well. We in our company do not use it but are we sure this audit log wont be useful to any
of the users ?

Moreover, ApplicationMasterNotRegisteredException is thrown from ApplicationMasterService#finishApplicationMaster
as well. We will have 3 logs in this flow as well.



> Avoid printing a stack trace when recovering an app after the RM restarts
> -------------------------------------------------------------------------
>
>                 Key: YARN-5297
>                 URL: https://issues.apache.org/jira/browse/YARN-5297
>             Project: Hadoop YARN
>          Issue Type: Task
>            Reporter: Siddharth Seth
>            Assignee: Junping Du
>         Attachments: YARN-5297-v2.patch, YARN-5297.patch
>
>
> The exception trace is unnecessary, and can cause confusion.
> {code}
> 2016-06-16 22:02:54,262 INFO  ipc.Server (Server.java:logException(2401)) - IPC Server
handler 0 on 8030, call org.apache.hadoop.yarn.api.ApplicationMasterProtocolPB.allocate from
172.22.79.149:42698 Call#2241 Retry#0
> org.apache.hadoop.yarn.exceptions.ApplicationMasterNotRegisteredException: AM is not
registered for known application attempt: appattempt_1466112179488_0001_000001 or RM had restarted
after AM registered . AM should re-register.
>   at org.apache.hadoop.yarn.server.resourcemanager.ApplicationMasterService.allocate(ApplicationMasterService.java:454)
>   at org.apache.hadoop.yarn.api.impl.pb.service.ApplicationMasterProtocolPBServiceImpl.allocate(ApplicationMasterProtocolPBServiceImpl.java:60)
>   at org.apache.hadoop.yarn.proto.ApplicationMasterProtocol$ApplicationMasterProtocolService$2.callBlockingMethod(ApplicationMasterProtocol.java:99)
>   at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:640)
>   at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:969)
>   at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2313)
>   at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2309)
>   at java.security.AccessController.doPrivileged(Native Method)
>   at javax.security.auth.Subject.doAs(Subject.java:422)
>   at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1724)
>   at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2307)
> {code}
> cc [~djp]



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