全局提交中DefaultCore.commit方法中globalSession.closeAndClean();做的事情和这个方法上面的注释不服，里面的代码实现不能实现注释上的功能

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Start by reading DefaultCore.commit and the comment above globalSession.closeAndClean(); then compare that stated behavior with what the method actually does. Trace the surrounding global-session commit flow to determine the mismatch. Done means the implementation fulfills the documented behavior and the observed discrepancy is covered by appropriate verification.

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