为提高效率，请提供以下信息，问题描述清晰能够更快得到解决：
【 TiDB 使用环境】
无tidb
【概述】：场景 + 问题概述
[2021/07/31 03:44:54.262 +00:00] [INFO] [peer.rs:606] [“deleting applied snap file”] [snap_file=2_6_7] [peer_id=6] [region_id=2]
[2021/07/31 04:12:55.062 +00:00] [INFO] [raft.rs:1739] [“[term 6] received MsgTimeoutNow from 3 and starts an election to get leadership.”] [from=3] [term=6] [raft_id=6] [region_id=2]
[2021/07/31 04:12:55.062 +00:00] [INFO] [raft.rs:1177] [“starting a new election”] [term=6] [raft_id=6] [region_id=2]
[2021/07/31 04:12:55.062 +00:00] [INFO] [raft.rs:807] [“became candidate at term 7”] [term=7] [raft_id=6] [region_id=2]
[2021/07/31 04:12:55.062 +00:00] [INFO] [raft.rs:902] [“6 received message from 6”] [term=7] [msg=MsgRequestVote] [from=6] [id=6] [raft_id=6] [region_id=2]
[2021/07/31 04:12:55.062 +00:00] [INFO] [raft.rs:923] [“[logterm: 6, index: 76840] sent request to 7”] [msg=MsgRequestVote] [term=7] [id=7] [log_index=76840] [log_term=6] [raft_id=6] [region_id=2]
[2021/07/31 04:12:55.063 +00:00] [INFO] [raft.rs:923] [“[logterm: 6, index: 76840] sent request to 3”] [msg=MsgRequestVote] [term=7] [id=3] [log_index=76840] [log_term=6] [raft_id=6] [region_id=2]
[2021/07/31 04:12:55.064 +00:00] [INFO] [transport.rs:144] [“resolve store address ok”] [addr=basic-tikv-1.basic-tikv-peer.tidb-cluster.svc:20160] [store_id=5]
[2021/07/31 04:12:55.064 +00:00] [INFO] [raft_client.rs:48] [“server: new connection with tikv endpoint”] [addr=basic-tikv-1.basic-tikv-peer.tidb-cluster.svc:20160]
[2021/07/31 04:12:55.064 +00:00] [INFO] [raft.rs:1673] [“received from 3”] [term=7] [“msg type”=MsgRequestVoteResponse] [from=3] [raft_id=6] [region_id=2]
[2021/07/31 04:12:55.065 +00:00] [INFO] [raft.rs:874] [“became leader at term 7”] [term=7] [raft_id=6] [region_id=2]
[2021/07/31 04:12:55.065 +00:00] [INFO] [deadlock.rs:629] [“became the leader of deadlock detector!”] [self_id=4]
[2021/07/31 04:12:55.065 +00:00] [ERROR] [client.rs:350] [“failed to send heartbeat”] [err=“Grpc(RpcFinished(Some(RpcStatus { status: 0-OK, details: None })))”]
[2021/07/31 04:12:55.065 +00:00] [ERROR] [util.rs:286] [“request failed, retry”] [err=“Grpc(RpcFinished(Some(RpcStatus { status: 0-OK, details: None })))”]
[2021/07/31 04:12:55.066 +00:00] [ERROR] [util.rs:286] [“request failed, retry”] [err=“Other(SendError("…"))”]
[2021/07/31 04:12:55.066 +00:00] [ERROR] [util.rs:286] [“request failed, retry”] [err=“Other(SendError("…"))”]
[2021/07/31 04:12:55.066 +00:00] [INFO] [util.rs:398] [“connecting to PD endpoint”] [endpoints=http://basic-pd-0.basic-pd-peer.tidb-cluster.svc:2379]
[2021/07/31 04:12:55.067 +00:00] [INFO] [] [“New connected subchannel at 0x7fb722e80330 for subchannel 0x7fb722ede1c0”]
[2021/07/31 04:12:55.069 +00:00] [INFO] [util.rs:398] [“connecting to PD endpoint”] [endpoints=http://basic-pd-0.basic-pd-peer.tidb-cluster.svc:2379]
[2021/07/31 04:12:55.072 +00:00] [INFO] [util.rs:457] [“connected to PD leader”] [endpoints=http://basic-pd-0.basic-pd-peer.tidb-cluster.svc:2379]
[2021/07/31 04:12:55.072 +00:00] [INFO] [util.rs:175] [“heartbeat sender and receiver are stale, refreshing …”]
[2021/07/31 04:12:55.072 +00:00] [WARN] [util.rs:194] [“updating PD client done”] [spend=6.554492ms]
[2021/07/31 04:12:55.073 +00:00] [INFO] [kv.rs:587] [“batch_raft RPC is called, new gRPC stream established”]
请问tikv出现这种错误有影响吗，这些错误是因为什么
同时导数据的时候出现
【背景】：做过哪些操作
【现象】：业务和数据库现象
【问题】：当前遇到的问题
【业务影响】：
【TiDB 版本】：
【TiDB Operator 版本】：
【K8s 版本】：
【附件】：
- 相关日志、配置文件、Grafana 监控（https://metricstool.pingcap.com/)
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