InnoDB: Assertion failure in thread <nr> in file row0upd.c line 2023

[George Ormond Lorch III]

This may have the same cause as:
https://bugs.launchpad.net/percona-server/+bug/1086227 and
https://bugs.launchpad.net/percona-server/+bug/1122462

in that is around lazy_drop_table which is in the process of being removed.

Version: '5.5.30' socket: '/data/dev/PS-81.2/1/mysql.sock' port: 10000 MySQL Community Server (GPL)
InnoDB: Warning: hash index ref_count (1) is not zero after fil_discard_tablespace().
index: "PRIMARY" table: "rqg1/table100_innodb_dynamic_int"
130405 12:30:35 InnoDB: Assertion failure in thread 139990104405760 in file row0upd.c line 2023
InnoDB: Failing assertion: btr_pcur_restore_position(thr_get_trx(thr)->fake_changes ? BTR_SEARCH_TREE : BTR_MODIFY_TREE, pcur, mtr)

Running two instances of RQG against one server.

my.cnf:
[client]
port=10000
socket=/data/dev/PS-81.2/1/mysql.sock
[mysqld]
basedir=/data/bin/ps-5.5-PS-81
datadir=/data/dev/PS-81.2/1/data
tmpdir=/data/dev/PS-81.2/1/tmp
port=10000
socket=/data/dev/PS-81.2/1/mysql.sock
pid-file=/data/dev/PS-81.2/1/mysql.pid
console
user=root
server-id=1
innodb_buffer_pool_size=512M
innodb_lazy_drop_table=1
innodb_file_per_table=1
innodb_file_format=barracuda

[Laurynas Biveinis (laurynas-biveinis)]

There is another bug reported for the assert at the same location: bug 1086269, thus marking this one as its duplicate.