realm/realm-java — pull request #455 by kneth (2014-10-06 08:35:13+00:00)
Title: Nested write transactions are not supported.

Before this change, the following code snippet would wait for ever:

Realm realm = Realm.getInstance();
realm.beginTransaction();
realm.beginTransaction();

When applying this PR, the third line will throw an exception.

@bmunkholm @benjaminprakash88 @emanuelez