Merge pull request #998 from getong/fix-example-code #30

Job	Run time
cluster-benchmark (cluster_benchmark)	45s
examples (stable, raft-kv-memstore)	2m 17s
examples (stable, raft-kv-memstore-singlethreaded)	1m 7s
external-stores (stores/rocksstore-v2)	5m 56s
examples (stable, raft-kv-rocksdb)	8m 1s
examples (nightly, raft-kv-memstore)	2m 10s
lint	6m 36s
examples (nightly, raft-kv-memstore-singlethreaded)	1m 18s
examples (nightly, raft-kv-rocksdb)	11m 54s
openraft-feature-test (nightly)	49s
openraft-feature-test (nightly, serde)	51s
openraft-test (stable, 0)	3m 5s
openraft-feature-test (nightly, single-term-leader)	47s
openraft-test (nightly, 30)	3m 19s
openraft-feature-test (nightly, single-term-leader,serde,singlethreaded)	51s
openraft-test (nightly, 0, single-term-leader)	3m 22s
openraft-test-bench (nightly)	54s
stores (memstore)	44s
stores (rocksstore)	6m 3s
stores (rocksstore-compat07)	6m 16s
Build (nightly, bench,serde,bt,singlethreaded)	45s
stores (sledstore)	50s
tests-feature-test (nightly)	2m 41s
tests-feature-test (nightly, single-term-leader)	2m 45s
tests-feature-test (nightly, loosen-follower-log-revert)	2m 49s
	1h 16m 55s

Provide feedback