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Posted to common-dev@hadoop.apache.org by "Hairong Kuang (JIRA)" <ji...@apache.org> on 2007/03/01 03:05:51 UTC
[jira] Resolved: (HADOOP-1013) ArithmeticException when number of
racks is zero
[ https://issues.apache.org/jira/browse/HADOOP-1013?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Hairong Kuang resolved HADOOP-1013.
-----------------------------------
Resolution: Fixed
Fix Version/s: 0.11.2
fixed as part of HADOOP-972
> ArithmeticException when number of racks is zero
> ------------------------------------------------
>
> Key: HADOOP-1013
> URL: https://issues.apache.org/jira/browse/HADOOP-1013
> Project: Hadoop
> Issue Type: Bug
> Components: dfs
> Affects Versions: 0.11.0
> Environment: EC2
> Reporter: James P. White
> Assigned To: Hairong Kuang
> Fix For: 0.11.2
>
>
> It seems that if something is wrong in the configuration that results in the number of racks being zero, the symptom is a divide-by-zero exception.
> [root@domU-12-31-34-00-03-2F ~]# cd /usr/local/hadoop-0.11.0/
> [root@domU-12-31-34-00-03-2F hadoop-0.11.0]# bin/hadoop jar hadoop-0.11.0-examples.jar pi 10 10000000
> Number of Maps = 10 Samples per Map = 10000000
> org.apache.hadoop.ipc.RemoteException: java.io.IOException: java.lang.ArithmeticException: / by zero
> at org.apache.hadoop.dfs.FSNamesystem$Replicator.chooseTarget(FSNamesystem.java:2593)
> at org.apache.hadoop.dfs.FSNamesystem$Replicator.chooseTarget(FSNamesystem.java:2555)
> at org.apache.hadoop.dfs.FSNamesystem.startFile(FSNamesystem.java:684)
> at org.apache.hadoop.dfs.NameNode.create(NameNode.java:248)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:585)
> at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:337)
> at org.apache.hadoop.ipc.Server$Handler.run(Server.java:538)
> at org.apache.hadoop.ipc.Client.call(Client.java:467)
> at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:164)
> at org.apache.hadoop.dfs.$Proxy0.create(Unknown Source)
> at org.apache.hadoop.dfs.DFSClient$DFSOutputStream.locateNewBlock(DFSClient.java:1091)
> at org.apache.hadoop.dfs.DFSClient$DFSOutputStream.nextBlockOutputStream(DFSClient.java:1031)
> at org.apache.hadoop.dfs.DFSClient$DFSOutputStream.endBlock(DFSClient.java:1255)
> at org.apache.hadoop.dfs.DFSClient$DFSOutputStream.close(DFSClient.java:1345)
> at java.io.FilterOutputStream.close(FilterOutputStream.java:143)
> at java.io.FilterOutputStream.close(FilterOutputStream.java:143)
> at java.io.FilterOutputStream.close(FilterOutputStream.java:143)
> at org.apache.hadoop.fs.FSDataOutputStream$Summer.close(FSDataOutputStream.java:98)
> at java.io.FilterOutputStream.close(FilterOutputStream.java:143)
> at java.io.FilterOutputStream.close(FilterOutputStream.java:143)
> at java.io.FilterOutputStream.close(FilterOutputStream.java:143)
> at org.apache.hadoop.io.SequenceFile$Writer.close(SequenceFile.java:724)
> at org.apache.hadoop.examples.PiEstimator.launch(PiEstimator.java:185)
> at org.apache.hadoop.examples.PiEstimator.main(PiEstimator.java:226)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:585)
> at org.apache.hadoop.util.ProgramDriver$ProgramDescription.invoke(ProgramDriver.java:71)
> at org.apache.hadoop.util.ProgramDriver.driver(ProgramDriver.java:143)
> at org.apache.hadoop.examples.ExampleDriver.main(ExampleDriver.java:40)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:585)
> at org.apache.hadoop.util.RunJar.main(RunJar.java:155)
> [root@domU-12-31-34-00-03-2F hadoop-0.11.0]#
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