[BE] Optimize version retrieval efficiency.#5831

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yangzhg merged 2 commits intoapache:masterfrom

killxdcj:ISSUE_5830

Jun 2, 2021

Commits on May 17, 2021

[FE] Optimize version retrieval efficiency in high-frequency import/compaction scenarios.
killxdcj
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Commits on May 28, 2021

Jump out of the loop when encountering the reverse edge.
killxdcj
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