Please, help!
According to this: 
http://code.google.com/intl/uk-UA/appengine/articles/life_of_write.html.

Suppose I call low-level put method outside of a transaction and after
an exception throws. If exception occures at the commit phase entity
won't be saved otherwise if exception occures at the applyed phase
entity will be saved.

Is there a way to find out entity is really saved or not after
exception?

If I execute the same operation inside the transaction, for exampe:
Transaction tx = datastore.beginTransaction();
try {

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