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From "Aaron Kimball (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-4141) ScriptBasedMapping has infinite loop with invalid jobconf parameter
Date Wed, 10 Sep 2008 00:41:44 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-4141?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Aaron Kimball updated HADOOP-4141:

    Attachment: TestScriptBasedMapping.java

Here's a test case for this ('svn diff' doesn't include this new file so it's posted separately)

> ScriptBasedMapping has infinite loop with invalid jobconf parameter
> -------------------------------------------------------------------
>                 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, TestScriptBasedMapping.java
>   Original Estimate: 0h
>  Remaining Estimate: 0h
> 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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