http://lists.mysql.com/commits/64967
Description:
Bug #32838 "Falcon; error 1296 : Got error 305 'record memory is exhausted'"
Several factors contribute to the out of memory error. Many have
been resolved
in other bugs (see Bug#42424, Bug#42505, Bug#42510 for details).
Record scavenger efficiency can be further improved by reducing
record
cache fragmentation.
The size of Record and RecordVersion objects is always the same,
but the
size of record data can vary considerably. The record cache
becomes more
fragmented over time because it is interspersed with fixed-size
Record and
RecordVersion objects.
Record and RecordVersion objects are now allocated from a memory pool
separate from the record data. Both memory pools will be more
homogeneous,
less fragmented and easier to scavenge.
