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From "Lily Wei (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-4856) Add thread dump information when derby crash
Date Fri, 14 Jan 2011 03:46:46 GMT

    [ https://issues.apache.org/jira/browse/DERBY-4856?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12981622#action_12981622
] 

Lily Wei commented on DERBY-4856:
---------------------------------

Thanks Kathey for reviewing. At LockInterruptTest.runWaiter() line 150 with ps.executeUpdate,
the test receive an interrupt and raise an error/exception "ERROR 08000: Connection closed
by unknown interrupt". I think this is a negative test case again. So, I set the flag to turn
off thread dump and diagnostic information.

> 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
>             Fix For: 10.8.0.0
>
>         Attachments: ContextManager.java, corruptdb.zip, derby-4856-1a.diff, DERBY-4856-part_1_1a.diff,
DERBY-4856_part_2_2a.diff, DERBY-4856_part_2_2b.diff, DERBY-4856_part_3_1a.diff, DERBY-4856_part_3_2a.diff,
DERBY-4856_part_3_3a.diff, DERBY-4856_part_3_3b.diff, DERBY-4856_part_3_3c.diff, DERBY-4856_part_3_3d.diff,
DERBY-4856_part_3_3e.diff, DERBY-4856_part_3_3g.diff, DERBY-4856_part_3_3g_1a.diff, DERBY-4856_part_3_3g_2a.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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