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From:kk r Date:January 5 2012 5:06am
Subject:InnoDB: Error: unlock row could not find a 4 mode lock on the record
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Hi All,

InnoDB repeatedly prints this message in the error log:

# InnoDB: Error: unlock row could not find a 4 mode lock on the record

Im not sure if the error message is critical or not, but its definitely not
nice to have in the error log.
After some exploration, I found this error is relevant to Bugs*#41756,
#48306, #53674. *

But I couldn't find out, how to resolve this! Kindly help!

Below are some details.

mysql = 5.1.43
Storage engine = innodb;
transaction-isolation = READ-COMMITTED;
binlog_format = mixed;
**
**
Thanks,

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InnoDB: Error: unlock row could not find a 4 mode lock on the recordkk r5 Jan