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https://issues.apache.org/jira/browse/HADOOP-5336?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12676961#action_12676961
]
Vinod K V commented on HADOOP-5336:
-----------------------------------
Here's the trace:
{code}
2009-02-26 10:41:31,975 WARN org.apache.hadoop.net.ScriptBasedMapping:
java.io.IOException: Cannot run program "<myPath>/topologyProgram" (in
directory "<my-hadoop-home>"): java.io.IOException: error=13, Permission denied
at java.lang.ProcessBuilder.start(ProcessBuilder.java:459)
at org.apache.hadoop.util.Shell.runCommand(Shell.java:149)
at org.apache.hadoop.util.Shell.run(Shell.java:134)
at
org.apache.hadoop.util.Shell$ShellCommandExecutor.execute(Shell.java:286)
at
org.apache.hadoop.net.ScriptBasedMapping$RawScriptBasedMapping.runResolveCommand(ScriptBasedMapping.java:148)
at
org.apache.hadoop.net.ScriptBasedMapping$RawScriptBasedMapping.resolve(ScriptBasedMapping.java:94)
at
org.apache.hadoop.net.CachedDNSToSwitchMapping.resolve(CachedDNSToSwitchMapping.java:59)
at
org.apache.hadoop.mapred.JobTracker.resolveAndAddToTopology(JobTracker.java:2120)
at
org.apache.hadoop.mapred.JobTracker.addNewTracker(JobTracker.java:2113)
at
org.apache.hadoop.mapred.JobTracker.processHeartbeat(JobTracker.java:2489)
at org.apache.hadoop.mapred.JobTracker.heartbeat(JobTracker.java:2289)
at sun.reflect.GeneratedMethodAccessor8.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:508)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:959)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:955)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:396)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:953)
Caused by: java.io.IOException: java.io.IOException: error=13, Permission denied
at java.lang.UNIXProcess.<init>(UNIXProcess.java:148)
at java.lang.ProcessImpl.start(ProcessImpl.java:65)
at java.lang.ProcessBuilder.start(ProcessBuilder.java:452)
... 19 more
{code}
{code}
2009-02-26 10:41:31,975 INFO org.apache.hadoop.ipc.Server: IPC Server handler
62 on 52000, call
heartbeat(org.apache.hadoop.mapred.tasktrackersta...@1b79c945, true, true,
true, -1) from
98.137.102.152:47264: error: java.io.IOException: java.lang.NullPointerException
java.io.IOException: java.lang.NullPointerException
at
org.apache.hadoop.mapred.JobTracker.resolveAndAddToTopology(JobTracker.java:2121)
at
org.apache.hadoop.mapred.JobTracker.addNewTracker(JobTracker.java:2113)
at
org.apache.hadoop.mapred.JobTracker.processHeartbeat(JobTracker.java:2489)
at org.apache.hadoop.mapred.JobTracker.heartbeat(JobTracker.java:2289)
at sun.reflect.GeneratedMethodAccessor8.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:508)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:959)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:955)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:396)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:953)
{code}
JT is alive all along, returning NPEs in TTs heartbeats.
> NPE in heartbeat when the configured topology script doesn't exist
> ------------------------------------------------------------------
>
> Key: HADOOP-5336
> URL: https://issues.apache.org/jira/browse/HADOOP-5336
> Project: Hadoop Core
> Issue Type: Bug
> Components: mapred
> Reporter: Vinod K V
>
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