Merge pull request #969 from drmingdrmer/59-faq #2853

Job	Run time
cluster-benchmark (cluster_benchmark)	49s
examples (stable, raft-kv-memstore)	2m 43s
examples (stable, raft-kv-rocksdb)	7m 53s
examples (nightly, raft-kv-memstore)	2m 7s
examples (nightly, raft-kv-rocksdb)	12m 15s
external-stores (stores/rocksstore-v2)	5m 55s
lint	6m 39s
openraft-feature-test (nightly)	53s
openraft-feature-test (nightly, serde)	49s
openraft-test (stable, 0)	3m 1s
openraft-feature-test (nightly, single-term-leader)	48s
openraft-test (nightly, 30)	3m 12s
openraft-feature-test (nightly, single-term-leader,serde,singlethreaded)	1m 15s
openraft-test (nightly, 0, single-term-leader)	2m 56s
openraft-test-bench (nightly)	1m 1s
stores (memstore)	43s
stores (rocksstore)	5m 48s
Build (nightly, bench,serde,bt,singlethreaded)	53s
stores (rocksstore-compat07)	6m 22s
stores (sledstore)	55s
tests-feature-test (nightly)	2m 39s
tests-feature-test (nightly, single-term-leader)	2m 40s
tests-feature-test (nightly, loosen-follower-log-revert)	2m 41s
	1h 14m 57s

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