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From "Knut Anders Hatlen (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-3503) Change stress.multi to dump thread stacks before killing off testers with jdk 1.5 and higher
Date Sun, 09 Mar 2008 08:05:46 GMT

    [ https://issues.apache.org/jira/browse/DERBY-3503?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12576724#action_12576724
] 

Knut Anders Hatlen commented on DERBY-3503:
-------------------------------------------

The patch basically looks good. Some minor comments:

  - ThreadDump.java lacks ASL header

  - The changes to the signatures of main() and execTesters() seem to be pure white-space
changes (changing tabs to mix of tabs/spaces)

  - The changes to main()'s javadoc look unintended (changes tabs to spaces, and incorrectly
changes FileNotFoundException to ParseException)

  - The indentation for the new code in execTesters() seems to be off. Have you checked that
your IDE has tab stop set to 4?

  - This code could be written as "if (j.atLeast(1, 5))" instead:
+                    if (j.getMajorNumber() == 1 && j.getMinorNumber() >= 5 ||
+                            j.getMajorNumber() > 1)

  - ThreadDump.java is a bit hard to read since it's not properly indented

  - The patch adds some lines with trailing spaces

> Change stress.multi to dump thread stacks before killing off testers with jdk 1.5 and
higher
> --------------------------------------------------------------------------------------------
>
>                 Key: DERBY-3503
>                 URL: https://issues.apache.org/jira/browse/DERBY-3503
>             Project: Derby
>          Issue Type: Improvement
>          Components: Test
>    Affects Versions: 10.4.0.0
>            Reporter: Kathey Marsden
>            Assignee: Kathey Marsden
>            Priority: Minor
>         Attachments: derby-3503_diff.txt
>
>
> Jdk 1.5 introduced Thread.getAllStackTraces() which can be used to print a thread dump
programatically.  The test stress.multi kills off its testers if it reaches a deadlock or
the testers can't complete on their own. It would be helpful in this case to get a thread
dump automatically.  The code could only be enabled for jdk 1.5 and higher.

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