* try to trigger mock transfer tests ci
* execute transfer tests
* show all logs when bazel test streaming
* temporary repeated ci runs
* Revert "temporary repeated ci runs"
This reverts commit dc77d2f9f79b5fa7b490221a8e9089e6349e067d.
* streaming writer use event driven model.
* minor changes according reviewer comments
* Fix according to reviewer's comments
* fix bazel lint
* code polished
* Add more comments
* rename Stop & Start of EventQueue to Freeze and Unfreeze.