Spring Boot 3.4 fails to connect to Redis executing CLIENT SETINFO results in the error: ERR unknown command.

[Zhangyh0514]

Issue

When the "spring.data.redis.database" parameter is set to a non-zero value, Spring Boot 3.4 fails to connect due to an error in executing CLIENT SETINFO, resulting in the error message: ERR unknown command.

• Setting spring.data.redis.database=0 results in a successful connection.
• Setting spring.data.redis.database=1 causes the connection to fail with the error: ERR unknown command.

Additionally, this issue does not occur in Spring Data Redis 3.2.

Stack trace

Error log

Caused by: org.springframework.data.redis.RedisConnectionFailureException: Unable to connect to Redis
	at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory$ExceptionTranslatingConnectionProvider.translateException(LettuceConnectionFactory.java:1858)
	at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory$ExceptionTranslatingConnectionProvider.getConnection(LettuceConnectionFactory.java:1789)
	at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory$SharedConnection.getNativeConnection(LettuceConnectionFactory.java:1586)
	at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory$SharedConnection.lambda$getConnection$0(LettuceConnectionFactory.java:1566)
	at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory.doInLock(LettuceConnectionFactory.java:1527)
	at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory$SharedConnection.getConnection(LettuceConnectionFactory.java:1563)
	at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory.getSharedConnection(LettuceConnectionFactory.java:1249)
	at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory.getConnection(LettuceConnectionFactory.java:1055)
	at org.springframework.data.redis.core.RedisConnectionUtils.fetchConnection(RedisConnectionUtils.java:195)
	at org.springframework.data.redis.core.RedisConnectionUtils.doGetConnection(RedisConnectionUtils.java:144)
	at org.springframework.data.redis.core.RedisConnectionUtils.getConnection(RedisConnectionUtils.java:105)
	at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:398)
	at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:378)
	at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:365)
	at com.mp.common.starter.db.configuration.MybatisPlusIdentifierConfiguration.checkMachine(MybatisPlusIdentifierConfiguration.java:96)
	at com.mp.common.starter.db.configuration.MybatisPlusIdentifierConfiguration.registerMachine(MybatisPlusIdentifierConfiguration.java:117)
	at com.mp.common.starter.db.configuration.MybatisPlusIdentifierConfiguration.idGenerator(MybatisPlusIdentifierConfiguration.java:85)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:569)
	at org.springframework.beans.factory.support.SimpleInstantiationStrategy.lambda$instantiate$0(SimpleInstantiationStrategy.java:171)
	... 88 common frames omitted
Caused by: org.springframework.data.redis.connection.PoolException: Could not get a resource from the pool
	at org.springframework.data.redis.connection.lettuce.LettucePoolingConnectionProvider.getConnection(LettucePoolingConnectionProvider.java:104)
	at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory$ExceptionTranslatingConnectionProvider.getConnection(LettuceConnectionFactory.java:1787)
	... 108 common frames omitted
Caused by: io.lettuce.core.RedisConnectionException: Unable to connect to IP_ADDRESS/<unresolved>:6379
	at io.lettuce.core.RedisConnectionException.create(RedisConnectionException.java:63)
	at io.lettuce.core.RedisConnectionException.create(RedisConnectionException.java:41)
	at io.lettuce.core.AbstractRedisClient.getConnection(AbstractRedisClient.java:354)
	at io.lettuce.core.RedisClient.connect(RedisClient.java:219)
	at org.springframework.data.redis.connection.lettuce.StandaloneConnectionProvider.lambda$getConnection$1(StandaloneConnectionProvider.java:112)
	at java.base/java.util.Optional.orElseGet(Optional.java:364)
	at org.springframework.data.redis.connection.lettuce.StandaloneConnectionProvider.getConnection(StandaloneConnectionProvider.java:112)
	at org.springframework.data.redis.connection.lettuce.LettucePoolingConnectionProvider.lambda$getConnection$0(LettucePoolingConnectionProvider.java:93)
	at io.lettuce.core.support.ConnectionPoolSupport$RedisPooledObjectFactory.create(ConnectionPoolSupport.java:196)
	at io.lettuce.core.support.ConnectionPoolSupport$RedisPooledObjectFactory.create(ConnectionPoolSupport.java:186)
	at org.apache.commons.pool2.BasePooledObjectFactory.makeObject(BasePooledObjectFactory.java:71)
	at org.apache.commons.pool2.impl.GenericObjectPool.create(GenericObjectPool.java:566)
	at org.apache.commons.pool2.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:306)
	at org.apache.commons.pool2.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:233)
	at io.lettuce.core.support.ConnectionPoolSupport$1.borrowObject(ConnectionPoolSupport.java:107)
	at io.lettuce.core.support.ConnectionPoolSupport$1.borrowObject(ConnectionPoolSupport.java:102)
	at org.springframework.data.redis.connection.lettuce.LettucePoolingConnectionProvider.getConnection(LettucePoolingConnectionProvider.java:99)
	... 109 common frames omitted
Caused by: io.lettuce.core.RedisCommandExecutionException: NOAUTH Authentication required.
	at io.lettuce.core.internal.ExceptionFactory.createExecutionException(ExceptionFactory.java:151)
	at io.lettuce.core.internal.ExceptionFactory.createExecutionException(ExceptionFactory.java:120)
	at io.lettuce.core.protocol.AsyncCommand.completeResult(AsyncCommand.java:124)
	at io.lettuce.core.protocol.AsyncCommand.complete(AsyncCommand.java:115)
	at io.lettuce.core.protocol.CommandHandler.complete(CommandHandler.java:749)
	at io.lettuce.core.protocol.CommandHandler.decode(CommandHandler.java:684)
	at io.lettuce.core.protocol.CommandHandler.channelRead(CommandHandler.java:601)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
	at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1357)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:440)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
	at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:868)
	at io.netty.channel.kqueue.AbstractKQueueStreamChannel$KQueueStreamUnsafe.readReady(AbstractKQueueStreamChannel.java:543)
	at io.netty.channel.kqueue.AbstractKQueueChannel$AbstractKQueueUnsafe.readReady(AbstractKQueueChannel.java:387)
	at io.netty.channel.kqueue.KQueueEventLoop.processReady(KQueueEventLoop.java:218)
	at io.netty.channel.kqueue.KQueueEventLoop.run(KQueueEventLoop.java:296)
	at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997)
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
	at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
	at java.base/java.lang.Thread.run(Thread.java:840)

tcpdump analysis

redis 7.2 supports the CLIENT SETINFO command
https://redis.io/docs/latest/commands/client-setinfo/

Environment

• Spring Data Redis 3.4
• Lettuce version(s): 6.4.1.RELEASE
• Redis version: Earlier than redis 7.2 (5.0）

[mp911de]

The Lettuce driver version has changed across Spring Data and Spring Boot versions that have changed handshake behavior. I suggest that you configure LettuceClientConfiguration.clientOptions with ClientOptions.builder().protocolVersion(ProtocolVersion.RESP2).build() to force RESP2 handling so you won't run into the HELLO error and authentication is going to be applied using the AUTH command instead.

It looks like the Lettuce client has fixed the issue with the 6.5 release via redis/lettuce#3035.

In any case, that is a driver issue.

[Zhangyh0514]

The Lettuce driver version has changed across Spring Data and Spring Boot versions that have changed handshake behavior. I suggest that you configure LettuceClientConfiguration.clientOptions with ClientOptions.builder().protocolVersion(ProtocolVersion.RESP2).build() to force RESP2 handling so you won't run into the HELLO error and authentication is going to be applied using the AUTH command instead.

It looks like the Lettuce client has fixed the issue with the 6.5 release via redis/lettuce#3035.

In any case, that is a driver issue.

@mp911de
Thank you for your reply

Spring. Data. Redis. Database = 1 the Settings in redis receives "CLIENT SETINFO" command, this is a problem.

In earlier versions of redis, "ERR unknown command" will be displayed