Bug #38519 Falcon causes massive test failures in embedded mode

• Submitted: 1 Aug 2008 15:17
• Modified: 4 Oct 2008 16:28
• Reporter: Alexander Nozdrin
• Status: Closed
• Category: Server: Falcon
• Severity: S1 (Critical)
• Version: 6.0-BK
• OS: Any
• Assigned to: Vladislav Vaintroub
• Target Version: 6.0-beta
• Tags: sporadic, test failure, pushbuild, widespread
• Triage: D2 (Serious)

[1 Aug 2008 15:17] Alexander Nozdrin

Description:
We have massive test failures in embedded mode from time to time
(like in this push:
https://intranet.mysql.com/secure/pushbuild/showpush.pl?dir=bzr_mysql-6.0-runtime&order=41
).

The reason seems to be a failed assertion in Falcon code:
[Falcon] Error: assertion (key - (UCHAR*) indexNode < 14) failed at line 109 in file
IndexNode.h

How to repeat:
PushBuild.

[2 Aug 2008 0:41] Vladislav Vaintroub

Kevin , I attach log ile with stacktraces. Interesting thing is, it crashes while trying
to recover on start (checksum error).
As I understand it, test restart should be always done on a clean databasem, i.e no falcon
files at all. Can you confirm it? If it is like this, then mysql-test-run behaves strange
and we should assign this bug to server-test cathegory or so.

[2 Aug 2008 0:45] Vladislav Vaintroub

log with stack traces

Attachment: elog_embedded.zip (application/x-zip-compressed, text), 19.35 KiB.

[2 Aug 2008 3:47] Vladislav Vaintroub

2 patches commited.

http://lists.mysql.com/commits/50837
Removes falcon files before each run of mysql_test_embedded. Otherwise error in Falcon
recovery will prevent any subsequent test to run.

http://lists.mysql.com/commits/50824
Prevents crash in destructor of static Falcon objects (that is static objects should avoid
doing delete operator in destructor, as Falcon memory manager can already be destroyed)

[15 Aug 2008 8:02] Alexander Nozdrin

This particular patch was merged to 6.0 (6.0.7),
but it didn't solve all the problem. Sometimes tests still
fail massively in embedded mode. See Bug#38770.

[13 Sep 2008 23:46] Bugs System

Pushed into 6.0.6-alpha  (revid:[e-mail]-20080801175628-4ehwma07vurfewym)
(version source revid:[e-mail]-20080716105246-eg0utbybp122n2w9) (pib:3)

[4 Oct 2008 16:28] Jon Stephens

Documented in the 6.0.6 changelog as follows:

        The Falcon memory manager did not always perform initializations of
        internal objects correctly.