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[Usage]: When using MooncakeDistributedStore in Python, after the written client is closed, other clients cannot query the written value

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### Describe your usage question when using at node 1： ```python # node 1 from mooncake.store import MooncakeDistributedStore store = MooncakeDistributedStore() store.setup("10.248.92.175", "http://10.248.253.230:8080/metadata", 3200 * 1024 * 1024, 512 *...