The MySQL compatibility feature "insert ... on duplicate key update" did not work with a non-default schema.

Avoid "warning: [unchecked] Possible heap pollution from parameterized vararg type" (should use @SafeVarargs, but Java 6 doesn't support that yet)

MVStore: the cache for page references could grow far too big, resulting in out of memory in some cases.

MVStore: orphaned lob objects were not correctly removed in some cases, making the database grow unnecessarily.

MVStore / TransactionStore: concurrent updates could result in a "Too many open transactions" exception.

StringUtils.toUpperEnglish now has a small cache. This should speed up reading from a ResultSet when using the column name.

all of the GROUP BY columns are not mentioned in the select. Patch by Frederico (zepfred).