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From "Bryan Pendleton (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-4856) Add thread dump information when derby crash
Date Wed, 01 Dec 2010 14:19:11 GMT

    [ https://issues.apache.org/jira/browse/DERBY-4856?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12965686#action_12965686
] 

Bryan Pendleton commented on DERBY-4856:
----------------------------------------

+1 to the technique of the multi-step approach.

I read through your part-1 patch and it looks fine to me.

Thanks for working on this infrastructure, it will be very helpful!


> Add thread dump information when derby crash
> --------------------------------------------
>
>                 Key: DERBY-4856
>                 URL: https://issues.apache.org/jira/browse/DERBY-4856
>             Project: Derby
>          Issue Type: Bug
>          Components: Services
>            Reporter: Lily Wei
>            Assignee: Lily Wei
>            Priority: Minor
>         Attachments: corruptdb.zip, derby-4856-1a.diff, DERBY-4856-part_1_1a.diff, derby.log
>
>
> On system crash or session ending error, Derby should dump as much information as possible.
Such as: forcing a javacore if possible or at least thread dump and system environment information.
This should only occur if a running session crashes not on boot error due to fail recovery
etc.
> The IBM jvm provides a way to programmatically dump a javacore. i.e. com.ibm.jvm.Dump.JavaDump()
And, the SUN jvm will force a thread dump using the Unsafe class and there may be a better
way. 

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