Merge pull request #950 from drmingdrmer/31-refactor #2777

Job	Run time
stores (memstore)	42s
openraft-test (stable, 0)	2m 54s
openraft-test-bench (nightly)	55s
stores (rocksstore)	6m 3s
openraft-test (nightly, 30)	3m 12s
stores (rocksstore-compat07)	6m 8s
openraft-test (nightly, 0, single-term-leader)	2m 58s
stores (sledstore)	55s
cluster-benchmark (cluster_benchmark)	43s
examples (stable, raft-kv-memstore)	2m 16s
examples (stable, raft-kv-rocksdb)	8m 0s
external-stores (stores/rocksstore-v2)	5m 55s
examples (nightly, raft-kv-memstore)	2m 7s
examples (nightly, raft-kv-rocksdb)	11m 58s
lint	6m 30s
openraft-feature-test (nightly)	46s
Build (nightly, bench,serde,bt,singlethreaded)	49s
openraft-feature-test (nightly, serde)	50s
openraft-feature-test (nightly, single-term-leader)	50s
openraft-feature-test (nightly, single-term-leader,serde,singlethreaded)	52s
tests-feature-test (nightly)	2m 44s
tests-feature-test (nightly, single-term-leader)	2m 38s
tests-feature-test (nightly, loosen-follower-log-revert)	2m 44s
	1h 13m 29s

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