Bug #38818 mtr timeouts don't work

• Submitted: 15 Aug 2008 8:52
• Modified: 8 Oct 2008 9:50
• Reporter: Daniel Fischer
• Status: Won't fix
• Category: MySQL Server: Tests
• Severity: S7 (Test Cases)
• Version: 5.0,5.1,6.0
• OS: Windows (WS2008)
• Assigned to: Magnus Blåudd
• CPU Architecture: Any

[15 Aug 2008 8:52] Daniel Fischer

Description:
On Windows, at least when running under ActivePerl, mtr's timeouts don't work. When a test case hangs or mysqld hangs, mtr will hang indefinitely.

This is critical because it makes the test suite unusable.

How to repeat:
Run test suite on a Windows box without cygwin.

Suggested fix:
I haven't looked at mtr's implementation of timeouts, so I don't know if this is helpful at all, but the Win32::Job module has functionality for spawning processes in a job group, which includes being able to kill the whole job including child processes. (This is basically what I do with mtr itself, but outside mtr I can only time out an entire run, not individual test cases.)

[15 Aug 2008 12:15] MySQL Verification Team

Thank you for the bug report.

[25 Aug 2008 9:05] Magnus Blåudd

New mtr.pl uses Job's on windows(altough not the Win32::Job implementation of perl), that will appear in 5.1 and up.

For 5.0, I _think_ I can show how to fix the timeout process.

[8 Oct 2008 9:50] Magnus Blåudd

Will not fix this in old mtr.pl. Should work in new mtr.pl that will be available from 5.1 and up.