Unknown redis exception; nested exception is java.lang.IllegalStateException: Connection has no active transaction

- [ ] I have searched the [issues](https://github.com/codingapi/tx-lcn/issues) of this repository and believe that this is not a duplicate.

### 1. Bug Description

2020-03-24 09:33:27.373 INFO 18496 --- [trap-executor-0] c.n.d.s.r.aws.ConfigClusterResolver : Resolving eureka endpoints via configuration
org.springframework.data.redis.RedisSystemException: Unknown redis exception; nested exception is java.lang.IllegalStateException: Connection has no active transaction
at org.springframework.data.redis.FallbackExceptionTranslationStrategy.getFallback(FallbackExceptionTranslationStrategy.java:53)
at org.springframework.data.redis.FallbackExceptionTranslationStrategy.translate(FallbackExceptionTranslationStrategy.java:43)
at org.springframework.data.redis.connection.jedis.JedisConnection.convertJedisAccessException(JedisConnection.java:181)
at org.springframework.data.redis.connection.jedis.JedisConnection.discard(JedisConnection.java:534)
at org.springframework.data.redis.connection.DefaultStringRedisConnection.discard(DefaultStringRedisConnection.java:262)
at org.springframework.data.redis.core.RedisTemplate.lambda$discard$19(RedisTemplate.java:974)
at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:224)
at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:184)
at org.springframework.data.redis.core.RedisTemplate.discard(RedisTemplate.java:973)
at com.codingapi.txlcn.tm.core.storage.redis.RedisStorage.refreshMachines(RedisStorage.java:269)
at com.codingapi.txlcn.tm.support.service.impl.ManagerServiceImpl.refreshMachines(ManagerServiceImpl.java:86)
at com.codingapi.txlcn.tm.txmsg.EnsureIdGenEngine.onTmReceivedHeart(EnsureIdGenEngine.java:61)
at com.codingapi.txlcn.txmsg.netty.handler.RpcCmdDecoder.channelRead0(RpcCmdDecoder.java:61)
at com.codingapi.txlcn.txmsg.netty.handler.RpcCmdDecoder.channelRead0(RpcCmdDecoder.java:40)
at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340)
at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:102)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340)
at io.netty.handler.timeout.IdleStateHandler.channelRead(IdleStateHandler.java:286)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340)
at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:310)
at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:284)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340)
at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1434)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:965)
at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:163)
at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:647)
at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:582)
at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:499)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:461)
at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884)
at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.IllegalStateException: Connection has no active transaction
at org.springframework.data.redis.connection.jedis.JedisConnection.getRequiredTransaction(JedisConnection.java:597)
at org.springframework.data.redis.connection.jedis.JedisConnection.discard(JedisConnection.java:532)
... 39 more

### 2. Environment:
- JDK version: 1.8
- OS: windows10
- TX-LCN version: 5.0.2.RELEASE
- Others: IDEA

还请各位大神帮忙解决

Bắt đầu từ RedisStorage.refreshMachines(RedisStorage.java:269), sau đó truy vết lệnh gọi RedisTemplate.discard và vòng đời giao dịch liên quan được hiển thị trong stack trace. Tái hiện lỗi bằng môi trường được báo cáo gồm JDK 8, Windows 10 và TX-LCN 5.0.2.RELEASE. Hoàn tất khi thao tác làm mới máy không còn phát sinh ngoại lệ giao dịch không hoạt động.

Do mô hình lập chỉ mục viết ra từ nội dung của issue.