ApiProxy.UnknownException (sometimes)
On Nov 6, 5:22 pm, Diana Cruise <[email protected]> wrote:
> There are only 5 exceptions documented for the datastore at the link
> below:
>
> http://code.google.com/appengine/docs/java/javadoc/com/google/appengi...
>
> From the descriptions, it appears only 2 of 5 are conditions where a
> re-try may succeed. They are:
>
> DatastoreFailureException
> DatastoreTimeoutException
>
> Can anyone confirm from their experience that these are the only
> appropriate to re-try a transaction?
>
> For example, when you hit the 30s timeout limit I assume the timeout
> exception above is triggered. Or, what if your transaction fails due
> to another update in-progress on the same entity group...what
> exception gets thrown for that? Clearly, you would want to re-try in
> that case!
>
> Thanks!
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