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Posted to mapreduce-issues@hadoop.apache.org by "Jonathan Matthew (Created) (JIRA)" <ji...@apache.org> on 2012/01/12 03:01:41 UTC
[jira] [Created] (MAPREDUCE-3661) JvmManager dies on windows
because it doesn't have process IDs
JvmManager dies on windows because it doesn't have process IDs
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Key: MAPREDUCE-3661
URL: https://issues.apache.org/jira/browse/MAPREDUCE-3661
Project: Hadoop Map/Reduce
Issue Type: Bug
Components: task-controller
Affects Versions: 1.0.0
Environment: Windows+cygwin
Reporter: Jonathan Matthew
JvmManager.kill() throws a NumberFormatException on Windows because it doesn't have process IDs, so it passes the default empty string (set in Child.main apparently) to Integer.parseInt(). This causes the task tracker to shut down.
I'm guessing the child can't send null (rather than "") as its pid to the parent, so the parent should treat the empty string the same as null when processing the pid string.
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[jira] [Updated] (MAPREDUCE-3661) JvmManager dies on windows
because it doesn't have process IDs
Posted by "Jonathan Matthew (Updated) (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/MAPREDUCE-3661?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jonathan Matthew updated MAPREDUCE-3661:
----------------------------------------
Attachment: mapreduce-3661-fix.diff
> JvmManager dies on windows because it doesn't have process IDs
> --------------------------------------------------------------
>
> Key: MAPREDUCE-3661
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3661
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: task-controller
> Affects Versions: 1.0.0
> Environment: Windows+cygwin
> Reporter: Jonathan Matthew
> Attachments: mapreduce-3661-fix.diff
>
>
> JvmManager.kill() throws a NumberFormatException on Windows because it doesn't have process IDs, so it passes the default empty string (set in Child.main apparently) to Integer.parseInt(). This causes the task tracker to shut down.
> I'm guessing the child can't send null (rather than "") as its pid to the parent, so the parent should treat the empty string the same as null when processing the pid string.
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