So I had a large install with 16 GB of Ram allocated to it. After some time after upgrading to 1.2 we started seeing the following error in the mysql logs
InnoDB: Warning: difficult to find free blocks in
InnoDB: the buffer pool (647699 search iterations)! Consider
InnoDB: increasing the buffer pool size.
InnoDB: It is also possible that in your Unix version
InnoDB: fsync is very slow, or completely frozen inside
InnoDB: the OS kernel. Then upgrading to a newer version
InnoDB: of your operating system may help. Look at the
InnoDB: number of fsyncs in diagnostic info below.
InnoDB: Pending flushes (fsync) log: 0; buffer pool: 0
InnoDB: 162919080 OS file reads, 14798003 OS file writes, 5736793 OS fsyncs
InnoDB: Starting InnoDB Monitor to print further
InnoDB: diagnostics to the standard output.
mysql logs were filling up. I allocated more RAM to the server (28 GB total) and modified my.cnf so innodb_buffer_pool_size = 21504
After about a day top was showing

top - 08:49:52 up 1 day, 30 min,  2 users,  load average: 0.70, 0.66, 0.70
Tasks: 115 total,   1 running, 114 sleeping,   0 stopped,   0 zombie
Cpu(s):  5.0%us,  1.6%sy,  0.0%ni, 91.7%id,  1.0%wa,  0.0%hi,  0.7%si,  0.0%st
Mem:     28201M total,    26987M used,     1213M free,      310M buffers
Swap:     2047M total,        0M used,     2047M free,    21130M cached
and Filr stopped working. I am no longer seeing the errors above in the mysql log but guessing I still have some memory issue going on perhaps? Restarting mysql does work (before it would hang when I had less memory on the server) but the memory used still remains high, and Filr does not work. Rebooting the mysql appliance does work though to free up the memory and get Filr working.

Any thoughts or advice would be appreciated.