[mythtv-commits] Ticket #8606: Backend deadlocked after database error when updating program listings from EIT

[MythTV]

#8606: Backend deadlocked after database error when updating program listings from
EIT
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 Reporter:  malcolm.parsons@…          |          Owner:  ijr
     Type:  defect                     |         Status:  closed
 Priority:  minor                      |      Milestone:  unknown
Component:  MythTV - General           |        Version:  0.23-fixes
 Severity:  high                       |     Resolution:  invalid
 Keywords:                             |  Ticket locked:  0
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Comment (by spidersddd@…):

 I am having very similar problems as this my mythweb stops responding and
 I have had several hard locks on my frontend that require a reboot.  If
 there is anything I can do to help get this resolved  am more then happy
 to do it.

 Troy K.
 email: spidersddd at gmail.com

 Replying to [ticket:8606 malcolm.parsons@…]:
 > I'm using MythTV 0.23.0+fixes25119-0ubuntu0+mythbuntu2
 >
 > I've been seeing random backend deadlocks, where the frontend lists no
 recorded programmes, the backend doesn't record anything, and the
 "Upcoming Recordings" and "Backend Status" pages in MythWeb don't load.
 >
 > Looking at the logs, there is a database error in the hour before the
 deadlock is noticed:
 >
 > 2010-06-25 12:55:04.036 DB Error (change_program):
 > Query was:
 > UPDATE program SET starttime = ?,     endtime   = ? WHERE chanid    =
 > ? AND       starttime = ?
 > Bindings were:
 > :CHANID=3003, :NEWEND=2010-06-29T02:45:00,
 :NEWSTART=2010-06-29T01:08:00,
 > :OLDSTART=2010-06-29T00:35:00
 > Driver error was [2/1062]:
 > QMYSQL3: Unable to execute statement
 > Database error was:
 > Duplicate entry '3003-2010-06-29 01:08:00-0' for key 'PRIMARY'
 >
 > Is the EIT collection thread leaving a mutex locked when this error
 happens?

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Ticket URL: <http://code.mythtv.org/trac/ticket/8606#comment:6>
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