为提高效率，提问时请提供以下信息，问题描述清晰可优先响应。
- 【TiDB 版本】：3.0.0-rc.1
- 【问题描述】：
tikv日志：
pd日志：
[2020/03/13 03:30:18.741 +08:00] [ERROR] [heartbeat_streams.go:121] [“send keepalive message fail”] [target-store-id=2] [error=EOF] [stack=“github.com/pingcap/log.Error
\t/home/jenkins/workspace/release_tidb_3.0/go/pkg/mod/github.com/pingcap/log@v0.0.0-20190214045112-b37da76f67a7/global.go:42
github.com/pingcap/pd/server.(*heartbeatStreams).run
\t/home/jenkins/workspace/release_tidb_3.0/go/src/github.com/pingcap/pd/server/heartbeat_streams.go:121”]
tidb日志：
[2020/03/13 03:33:58.406 +08:00] [ERROR] [client.go:144] [“batchRecvLoop error when receive”] [target=10.17.64.61:20160] [error=“rpc error: code = Unavailable desc = transport is closing”] [stack=“github.com/pingcap/tidb/store/tikv.(*batchCommandsClient).batchRecvLoop
\t/home/jenkins/workspace/release_tidb_3.0/go/src/github.com/pingcap/tidb/store/tikv/client.go:144”]
[2020/03/13 03:33:58.406 +08:00] [ERROR] [client.go:167] [“batchRecvLoop re-create streaming fail”] [target=10.17.64.61:20160] [error=“rpc error: code = Unavailable desc = all SubConns are in TransientFailure, latest connection error: connection error: desc = "transport: Error while dialing dial tcp 10.17.64.61:20160: connect: connection refused"”] [stack=“github.com/pingcap/tidb/store/tikv.(*batchCommandsClient).batchRecvLoop
\t/home/jenkins/workspace/release_tidb_3.0/go/src/github.com/pingcap/tidb/store/tikv/client.go:167”]
若提问为性能优化、故障排查类问题，请下载脚本运行。终端输出的打印结果，请务必全选并复制粘贴上传。
