All child tokens, when they're done, should/could transition to a join. The join will count down the outstanding tokens for the parent token, and allow it to resume when the last child completes.

To avoid other potential problems, I suggest that you make your token-generating node a fork.

I believe that there's a race condition leading to Hibernate StaleObject exceptions in join. Before you go into production, be sure to do some concurrency testing on join.

-Ed Staub

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