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From "Aaron Kimball (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-4141) ScriptBasedMapping has infinite loop with invalid jobconf parameter
Date Wed, 10 Sep 2008 00:39:44 GMT
ScriptBasedMapping has infinite loop with invalid jobconf parameter
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                 Key: HADOOP-4141
                 URL: https://issues.apache.org/jira/browse/HADOOP-4141
             Project: Hadoop Core
          Issue Type: Bug
    Affects Versions: 0.18.0
            Reporter: Aaron Kimball
            Priority: Minor
         Attachments: scriptMap.patch

A few bugs in ScriptBasedTopology:

1) topology.script.number.args is not validated; if this is <= 0, the runResolveCommand()
method will run its outer loop an infinite number of times. 

2) CachedDNSToSwitchMapping assumes that if a List is returned, it has the same cardinality
as the number of names. ScriptBasedMapping should return 'null' instead of a mis-sized list
on error

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