[SPARK-23408][SS][BRANCH-2.3] Synchronize successive AddData actions in Streaming*JoinSuite#23757

HeartSaVioR wants to merge 1 commit intoapache:branch-2.3apache/spark:branch-2.3from

HeartSaVioR:fix-streaming-join-test-flakiness-branch-2.3HeartSaVioR/spark:fix-streaming-join-test-flakiness-branch-2.3Copy head branch name to clipboard