static method AttributeTranslator.DicOfTranslators is not thread safe

[proff]

When loading excel files from different threads this method can be executed at same time. On screenshot we got race condition when inserting tblLook in non thread safe class Dictionary

[twsouthwick]

The SDK is not guaranteed to be threadsafe. I've been slowly adding better synchronization/reduction of state to help it work better in a threaded environment, but since it was not designed initially to be threadsafe, it's a slow process. Can you provide a test that shows the exact scenario you are doing?

[twsouthwick]

I took a quick look and can definitely see a possible cause (lots of unsynchronized read/write). A repro would help ensure it's a full fix, but is probably not necessary if it's hard to create (which a lot of multi-threaded issues tend to be)

[twsouthwick]

I've marked this as up-for-grabs - should be a fairly easy fix. The dicOfTranslators can be preinitialized. If @proff or anyone else is interested, let me know and I'll assign you to it.

[twsouthwick]

@proff I've submitted a fix for this. It turned out to be many kinds of wrong with multiple ways of entering race conditions. I completely redesigned this feature and it should work much more reliably. Thanks for notifying us of this issue!