Arvind Ranasaria 5f6d500977 This change ensures that we send back only one 'isComplete=true' message for a given result set (#763) ...

Fixes:
The streaming protocol is now tightened to ensure that only the last message for a result set contain isCompleted=true. Now isCompleted=true is never sent in isAvailable message.
Tightened logic in sending messages to make sure that no duplicate messages get sent out due to concurrent processing.
Made a fix to a null reference exception when processing special action which was a pre-existing benign bug.
Testing: Added 1 more new test that runs existing tests concurrently 1000 times to make sure no random timing issues are observed and tightened verifications to existing tests to ensure no duplicate messages and only one isComplete=true message is sent across.

* tightening the protocal to ensure only one message (the last one) with completed=true is sent back for a single result set within a query batch

2019-01-11 10:21:52 -08:00

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