Bug #41362 LogHandler opens the logfile twice causing resouce leak

Submitted:	10 Dec 2008 16:39	Modified:	10 Dec 2008 23:05
Reporter:	Magnus Blåudd	Email Updates:
Status:	Closed	Impact on me:	None
Category:	MySQL Cluster: Cluster (NDB) storage engine	Severity:	S2 (Serious)
Version:	6.3-.20	OS:	Any
Assigned to:	Magnus Blåudd	CPU Architecture:	Any

Description:
FileLogHandler will open the logfile twice causing leak of one file handle. 

How to repeat:
Found during online config change in 6.4

Suggested fix:
Keep track of the open/closed state of each Logger and don't allow a log file to be reopened.

A patch for this bug has been committed. After review, it may
be pushed to the relevant source trees for release in the next
version. You can access the patch from:

  http://lists.mysql.com/commits/61259

2789 Magnus Svensson	2008-12-10
      BUG#41362 LogHandler opens the logfile twice causing resouce leak

Pushed into 5.1.30-ndb-6.3.20  (revid:msvensson@mysql.com-20081210174607-ex1za51nuhq7eei6) (version source revid:msvensson@mysql.com-20081210174607-ex1za51nuhq7eei6) (pib:5)

Pushed into 5.1.30-ndb-6.4.0  (revid:msvensson@mysql.com-20081210174607-ex1za51nuhq7eei6) (version source revid:msvensson@mysql.com-20081210175510-c1y9fxz3vqluqkv6) (pib:5)

Documented in the NDB-6.3.20 changelog as follows:

        Cluster log files were opened twice by internal log-handling code,
        resulting in a resource leak.

Fix actually went into NDB-6.3.21 - updated changelog entry accordingly.

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