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https://issues.apache.org/jira/browse/APEXCORE-466?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15294352#comment-15294352
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ASF GitHub Bot commented on APEXCORE-466:
-----------------------------------------
GitHub user davidyan74 opened a pull request:
https://github.com/apache/incubator-apex-core/pull/339
APEXCORE-466 #resolve improved logging from the *Agent.java files
@PramodSSImmaneni please merge
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/davidyan74/incubator-apex-core APEXCORE-466
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/incubator-apex-core/pull/339.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #339
----
commit c4497e454c7e96e36dd0db274c16d5717fb03322
Author: David Yan <[email protected]>
Date: 2016-05-20T22:04:56Z
APEXCORE-466 #resolve improved logging from the *Agent.java files
----
> Improve logging from the *Agent.java files
> ------------------------------------------
>
> Key: APEXCORE-466
> URL: https://issues.apache.org/jira/browse/APEXCORE-466
> Project: Apache Apex Core
> Issue Type: Improvement
> Reporter: David Yan
> Assignee: David Yan
>
> Currently we are getting stack traces logging that actually do not
> necessarily indicate an error. For example:
> {code}
> 2016-05-20 11:56:22,859 WARN com.datatorrent.stram.client.EventsAgent: Got
> exception when reading events
> java.io.FileNotFoundException: File does not exist:
> /user/david/datatorrent/apps/application_1462948052533_0204/events/index.txt
> at
> org.apache.hadoop.hdfs.server.namenode.INodeFile.valueOf(INodeFile.java:66)
> at
> org.apache.hadoop.hdfs.server.namenode.INodeFile.valueOf(INodeFile.java:56)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocationsUpdateTimes(FSNamesystem.java:1932)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocationsInt(FSNamesystem.java:1873)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocations(FSNamesystem.java:1853)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocations(FSNamesystem.java:1825)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.getBlockLocations(NameNodeRpcServer.java:559)
> at
> org.apache.hadoop.hdfs.server.namenode.AuthorizationProviderProxyClientProtocol.getBlockLocations(AuthorizationProviderProxyClientProtocol.j
> ava:87)
> at
> org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.getBlockLocations(ClientNamenodeProtocolServerSideTranslatorP
> B.java:363)
> at
> org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.
> java)
> at
> org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:619)
> at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1060)
> at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2044)
> at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2040)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:415)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1671)
> at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2038)
> {code}
> This stack trace only indicates that no events have been logged yet for the
> application.
> We need to reduce this kind of logging to prevent false alarms to the user.
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