[FLINK-35924][Connectors / Common] delay the SplitReader closure to u… #4

Job	Run time
Pre-compile Checks / Basic QA	9m 28s
Default (Java 8) / Compile	38m 8s
Default (Java 8) / E2E (group 1)	2h 13m 59s
Default (Java 8) / Test packaging/licensing	34m 23s
Default (Java 8) / Test (module: core)	35m 54s
Default (Java 8) / E2E (group 2)	2h 17m 4s
Default (Java 8) / Test (module: python)	30m 14s
Default (Java 8) / Test (module: table)	35m 4s
Default (Java 8) / Test (module: connect)	21m 19s
Default (Java 8) / Test (module: tests)	47m 17s
Default (Java 8) / Test (module: misc)	1h 25m 0s
	10h 7m 50s

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