Lettuce has bugs and can't connect to Redis (UnresolvedAddressException)

[lovebing]

application.yml

spring:
  redis:
    host: 127.0.0.1
    port: 6379

Got errors:

org.springframework.data.redis.RedisConnectionFailureException: Unable to connect to Redis; nested exception is io.lettuce.core.RedisConnectionException: Unable to connect to 127.0.0.1:6379

  at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory$SharedConnection.getNativeConnection(LettuceConnectionFactory.java:966)
  at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory$SharedConnection.getConnection(LettuceConnectionFactory.java:934)
  at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory.getSharedConnection(LettuceConnectionFactory.java:786)
  at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory.getConnection(LettuceConnectionFactory.java:300)
  at org.springframework.data.redis.core.RedisConnectionUtils.doGetConnection(RedisConnectionUtils.java:132)
  at org.springframework.data.redis.core.RedisConnectionUtils.getConnection(RedisConnectionUtils.java:95)
  at org.springframework.data.redis.core.RedisConnectionUtils.getConnection(RedisConnectionUtils.java:82)
  at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:211)
  at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:184)
  at org.springframework.data.redis.core.AbstractOperations.execute(AbstractOperations.java:95)
  at org.springframework.data.redis.core.DefaultValueOperations.get(DefaultValueOperations.java:48)
  at cn.xiaoman.recommendation.admin.test.HdfsTest.redisTest(HdfsTest.java:38)
  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  at java.lang.reflect.Method.invoke(Method.java:498)
  at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
  at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
  at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
  at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
  at org.springframework.test.context.junit4.statements.RunBeforeTestExecutionCallbacks.evaluate(RunBeforeTestExecutionCallbacks.java:73)
  at org.springframework.test.context.junit4.statements.RunAfterTestExecutionCallbacks.evaluate(RunAfterTestExecutionCallbacks.java:83)
  at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75)
  at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86)
  at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84)
  at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
  at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:251)
  at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:97)
  at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
  at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
  at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
  at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
  at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
  at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
  at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
  at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
  at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:190)
  at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
  at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
  at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
  at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
  at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
Caused by: io.lettuce.core.RedisConnectionException: Unable to connect to 127.0.0.1:6379
  at io.lettuce.core.RedisConnectionException.create(RedisConnectionException.java:56)
  at io.lettuce.core.AbstractRedisClient.getConnection(AbstractRedisClient.java:233)
  at io.lettuce.core.RedisClient.connectStandalone(RedisClient.java:253)
  at io.lettuce.core.RedisClient.connect(RedisClient.java:202)
  at org.springframework.data.redis.connection.lettuce.StandaloneConnectionProvider.getConnection(StandaloneConnectionProvider.java:56)
  at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory$SharedConnection.getNativeConnection(LettuceConnectionFactory.java:959)
  ... 41 more
Caused by: java.nio.channels.UnresolvedAddressException
  at sun.nio.ch.Net.checkAddress(Net.java:101)
  at sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:622)
  at io.netty.channel.socket.nio.NioSocketChannel.doConnect(NioSocketChannel.java:242)
  at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.connect(AbstractNioChannel.java:205)
  at io.netty.channel.DefaultChannelPipeline$HeadContext.connect(DefaultChannelPipeline.java:1226)
  at io.netty.channel.AbstractChannelHandlerContext.invokeConnect(AbstractChannelHandlerContext.java:550)
  at io.netty.channel.AbstractChannelHandlerContext.connect(AbstractChannelHandlerContext.java:535)
  at io.netty.channel.ChannelDuplexHandler.connect(ChannelDuplexHandler.java:50)
  at io.netty.channel.AbstractChannelHandlerContext.invokeConnect(AbstractChannelHandlerContext.java:550)
  at io.netty.channel.AbstractChannelHandlerContext.connect(AbstractChannelHandlerContext.java:535)
  at io.netty.channel.ChannelOutboundHandlerAdapter.connect(ChannelOutboundHandlerAdapter.java:47)
  at io.netty.channel.AbstractChannelHandlerContext.invokeConnect(AbstractChannelHandlerContext.java:550)
  at io.netty.channel.AbstractChannelHandlerContext.connect(AbstractChannelHandlerContext.java:535)
  at io.netty.channel.ChannelDuplexHandler.connect(ChannelDuplexHandler.java:50)
  at io.netty.channel.AbstractChannelHandlerContext.invokeConnect(AbstractChannelHandlerContext.java:550)
  at io.netty.channel.AbstractChannelHandlerContext.connect(AbstractChannelHandlerContext.java:535)
  at io.netty.channel.AbstractChannelHandlerContext.connect(AbstractChannelHandlerContext.java:517)
  at io.netty.channel.DefaultChannelPipeline.connect(DefaultChannelPipeline.java:970)
  at io.netty.channel.AbstractChannel.connect(AbstractChannel.java:215)
  at io.netty.bootstrap.Bootstrap$2.run(Bootstrap.java:166)
  at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:408)
  at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:455)
  at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:140)
  at io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:144)
  at java.lang.Thread.run(Thread.java:745)

If I use Jedis instead, anything is OK.

[wilkinsona]

Thanks for the report, but this is the issue tracker for Spring Boot and Lettuce is managed as a separate project. Its issue tracker is here. If I have misunderstood, and you have already determined that the problem is in Spring Boot rather than Lettuce, please share your findings with us and we can re-open this issue if necessary.

[mp911de]

Looks like you have netty 4.0 and 4.1 on the classpath. Please remove netty 4.0. This is, in any case, not a Spring Boot or Spring Data Redis issue.

[bethunebtj]

Agree with @mp911de .
This is not a Spring issue, cause I've been using Lettuce separately and I got this too. It's just you have netty 4.0( or lower ) and 4.1 on your classpath. Maybe lettuce should mention it in the documentation.

[mambaJun]

me too?Then how to do?If I use Jedis instead, anything is OK. I don't understand @mp911de's means.

[wilkinsona]

@xajhwj Lettuce depends on Netty for its network IO. If you have the same problem as @lovebing, then you have two different versions of Netty on the classpath; 4.0 and 4.1. You can use mvn dependency:tree or ./gradlew dependencies to check your project's dependencies and identify why that's happening and then update your pom.xml or build.gradle to exclude Netty 4.0. If you need any more help with this, please follow up on Gitter or Stack Overflow. As mentioned in the guidelines for contributing, we prefer to use GitHub issues only for bugs and enhancements.

[angkar]

Hi

I am facing the same error (intermittently) - and I see I've only one netty in my classpath - what else I might be missing?

Thanks

compile - Dependencies for source set 'main' (deprecated, use 'implementation' instead).

+--- com.univocity:univocity-parsers:2.7.6
+--- javax.annotation:javax.annotation-api:1.3.2
+--- org.apache.httpcomponents:httpclient:4.5 -> 4.5.5
|    +--- org.apache.httpcomponents:httpcore:4.4.9
|    +--- commons-logging:commons-logging:1.2
|    \--- commons-codec:commons-codec:1.10
+--- com.amazonaws:aws-lambda-java-core:1.2.0
+--- com.fasterxml.jackson.core:jackson-databind:2.8.3
|    +--- com.fasterxml.jackson.core:jackson-annotations:2.8.0
|    \--- com.fasterxml.jackson.core:jackson-core:2.8.3 -> 2.9.8
+--- biz.paluch.redis:lettuce:4.2.2.Final
|    +--- io.reactivex:rxjava:1.1.9
|    +--- io.netty:netty-common:4.0.40.Final
|    +--- io.netty:netty-transport:4.0.40.Final
|    |    \--- io.netty:netty-buffer:4.0.40.Final
|    |         \--- io.netty:netty-common:4.0.40.Final
|    +--- io.netty:netty-handler:4.0.40.Final
|    |    +--- io.netty:netty-buffer:4.0.40.Final (*)
|    |    +--- io.netty:netty-transport:4.0.40.Final (*)
|    |    \--- io.netty:netty-codec:4.0.40.Final
|    |         \--- io.netty:netty-transport:4.0.40.Final (*)
|    \--- com.google.guava:guava:18.0
+--- org.slf4j:slf4j-api:1.7.25
+--- org.apache.logging.log4j:log4j-core:2.11.2
|    \--- org.apache.logging.log4j:log4j-api:2.11.2
+--- org.apache.logging.log4j:log4j-slf4j-impl:2.11.2
|    +--- org.slf4j:slf4j-api:1.7.25
|    +--- org.apache.logging.log4j:log4j-api:2.11.2
|    \--- org.apache.logging.log4j:log4j-core:2.11.2 (*)
+--- com.splunk.logging:splunk-library-javalogging:1.7.3
|    +--- org.apache.httpcomponents:httpclient:4.5.5 (*)
|    +--- org.apache.httpcomponents:httpasyncclient:4.1.3
|    |    +--- org.apache.httpcomponents:httpcore:4.4.6 -> 4.4.9
|    |    +--- org.apache.httpcomponents:httpcore-nio:4.4.6
|    |    |    \--- org.apache.httpcomponents:httpcore:4.4.6 -> 4.4.9
|    |    +--- org.apache.httpcomponents:httpclient:4.5.3 -> 4.5.5 (*)
|    |    \--- commons-logging:commons-logging:1.2
|    +--- org.apache.logging.log4j:log4j-api:2.10.0 -> 2.11.2
|    +--- org.apache.logging.log4j:log4j-core:2.10.0 -> 2.11.2 (*)
|    +--- com.googlecode.json-simple:json-simple:1.1.1
|    |    \--- junit:junit:4.10
|    |         \--- org.hamcrest:hamcrest-core:1.1
|    \--- com.google.code.gson:gson:2.2.4
\--- com.fasterxml.jackson.dataformat:jackson-dataformat-yaml:2.9.8
    +--- org.yaml:snakeyaml:1.23
    \--- com.fasterxml.jackson.core:jackson-core:2.9.8

compileClasspath - Compile classpath for source set 'main'.
+--- com.univocity:univocity-parsers:2.7.6
+--- javax.annotation:javax.annotation-api:1.3.2
+--- org.apache.httpcomponents:httpclient:4.5 -> 4.5.5
|    +--- org.apache.httpcomponents:httpcore:4.4.9
|    +--- commons-logging:commons-logging:1.2
|    \--- commons-codec:commons-codec:1.10
+--- com.amazonaws:aws-lambda-java-core:1.2.0
+--- com.fasterxml.jackson.core:jackson-databind:2.8.3
|    +--- com.fasterxml.jackson.core:jackson-annotations:2.8.0
|    \--- com.fasterxml.jackson.core:jackson-core:2.8.3 -> 2.9.8
+--- biz.paluch.redis:lettuce:4.2.2.Final
|    +--- io.reactivex:rxjava:1.1.9
|    +--- io.netty:netty-common:4.0.40.Final
|    +--- io.netty:netty-transport:4.0.40.Final
|    |    \--- io.netty:netty-buffer:4.0.40.Final
|    |         \--- io.netty:netty-common:4.0.40.Final
|    +--- io.netty:netty-handler:4.0.40.Final
|    |    +--- io.netty:netty-buffer:4.0.40.Final (*)
|    |    +--- io.netty:netty-transport:4.0.40.Final (*)
|    |    \--- io.netty:netty-codec:4.0.40.Final
|    |         \--- io.netty:netty-transport:4.0.40.Final (*)
|    \--- com.google.guava:guava:18.0
+--- org.slf4j:slf4j-api:1.7.25
+--- org.apache.logging.log4j:log4j-core:2.11.2
|    \--- org.apache.logging.log4j:log4j-api:2.11.2
+--- org.apache.logging.log4j:log4j-slf4j-impl:2.11.2
|    +--- org.slf4j:slf4j-api:1.7.25
|    \--- org.apache.logging.log4j:log4j-api:2.11.2
+--- com.splunk.logging:splunk-library-javalogging:1.7.3
|    +--- org.apache.httpcomponents:httpclient:4.5.5 (*)
|    +--- org.apache.httpcomponents:httpasyncclient:4.1.3
|    |    +--- org.apache.httpcomponents:httpcore:4.4.6 -> 4.4.9
|    |    +--- org.apache.httpcomponents:httpcore-nio:4.4.6
|    |    |    \--- org.apache.httpcomponents:httpcore:4.4.6 -> 4.4.9
|    |    +--- org.apache.httpcomponents:httpclient:4.5.3 -> 4.5.5 (*)
|    |    \--- commons-logging:commons-logging:1.2
|    +--- org.apache.logging.log4j:log4j-api:2.10.0 -> 2.11.2
|    +--- org.apache.logging.log4j:log4j-core:2.10.0 -> 2.11.2 (*)
|    +--- com.googlecode.json-simple:json-simple:1.1.1
|    |    \--- junit:junit:4.10
|    |         \--- org.hamcrest:hamcrest-core:1.1
|    \--- com.google.code.gson:gson:2.2.4
\--- com.fasterxml.jackson.dataformat:jackson-dataformat-yaml:2.9.8
    +--- org.yaml:snakeyaml:1.23
    \--- com.fasterxml.jackson.core:jackson-core:2.9.8

compileOnly - Compile only dependencies for source set 'main'.
No dependencies

default - Configuration for default artifacts.
+--- com.univocity:univocity-parsers:2.7.6
+--- javax.annotation:javax.annotation-api:1.3.2
+--- org.apache.httpcomponents:httpclient:4.5 -> 4.5.5
|    +--- org.apache.httpcomponents:httpcore:4.4.9
|    +--- commons-logging:commons-logging:1.2
|    \--- commons-codec:commons-codec:1.10
+--- com.amazonaws:aws-lambda-java-core:1.2.0
+--- com.fasterxml.jackson.core:jackson-databind:2.8.3
|    +--- com.fasterxml.jackson.core:jackson-annotations:2.8.0
|    \--- com.fasterxml.jackson.core:jackson-core:2.8.3 -> 2.9.8
+--- biz.paluch.redis:lettuce:4.2.2.Final
|    +--- io.reactivex:rxjava:1.1.9
|    +--- io.netty:netty-common:4.0.40.Final
|    +--- io.netty:netty-transport:4.0.40.Final
|    |    \--- io.netty:netty-buffer:4.0.40.Final
|    |         \--- io.netty:netty-common:4.0.40.Final
|    +--- io.netty:netty-handler:4.0.40.Final
|    |    +--- io.netty:netty-buffer:4.0.40.Final (*)
|    |    +--- io.netty:netty-transport:4.0.40.Final (*)
|    |    \--- io.netty:netty-codec:4.0.40.Final
|    |         \--- io.netty:netty-transport:4.0.40.Final (*)
|    \--- com.google.guava:guava:18.0
+--- org.slf4j:slf4j-api:1.7.25
+--- org.apache.logging.log4j:log4j-core:2.11.2
|    \--- org.apache.logging.log4j:log4j-api:2.11.2
+--- org.apache.logging.log4j:log4j-slf4j-impl:2.11.2
|    +--- org.slf4j:slf4j-api:1.7.25
|    +--- org.apache.logging.log4j:log4j-api:2.11.2
|    \--- org.apache.logging.log4j:log4j-core:2.11.2 (*)
+--- com.splunk.logging:splunk-library-javalogging:1.7.3
|    +--- org.apache.httpcomponents:httpclient:4.5.5 (*)
|    +--- org.apache.httpcomponents:httpasyncclient:4.1.3
|    |    +--- org.apache.httpcomponents:httpcore:4.4.6 -> 4.4.9
|    |    +--- org.apache.httpcomponents:httpcore-nio:4.4.6
|    |    |    \--- org.apache.httpcomponents:httpcore:4.4.6 -> 4.4.9
|    |    +--- org.apache.httpcomponents:httpclient:4.5.3 -> 4.5.5 (*)
|    |    \--- commons-logging:commons-logging:1.2
|    +--- org.apache.logging.log4j:log4j-api:2.10.0 -> 2.11.2
|    +--- org.apache.logging.log4j:log4j-core:2.10.0 -> 2.11.2 (*)
|    +--- com.googlecode.json-simple:json-simple:1.1.1
|    |    \--- junit:junit:4.10
|    |         \--- org.hamcrest:hamcrest-core:1.1
|    \--- com.google.code.gson:gson:2.2.4
\--- com.fasterxml.jackson.dataformat:jackson-dataformat-yaml:2.9.8
    +--- org.yaml:snakeyaml:1.23
    \--- com.fasterxml.jackson.core:jackson-core:2.9.8

implementation - Implementation only dependencies for source set 'main'. (n)
No dependencies

runtime - Runtime dependencies for source set 'main' (deprecated, use 'runtimeOnly' instead).
+--- com.univocity:univocity-parsers:2.7.6
+--- javax.annotation:javax.annotation-api:1.3.2
+--- org.apache.httpcomponents:httpclient:4.5 -> 4.5.5
|    +--- org.apache.httpcomponents:httpcore:4.4.9
|    +--- commons-logging:commons-logging:1.2
|    \--- commons-codec:commons-codec:1.10
+--- com.amazonaws:aws-lambda-java-core:1.2.0
+--- com.fasterxml.jackson.core:jackson-databind:2.8.3
|    +--- com.fasterxml.jackson.core:jackson-annotations:2.8.0
|    \--- com.fasterxml.jackson.core:jackson-core:2.8.3 -> 2.9.8
+--- biz.paluch.redis:lettuce:4.2.2.Final
|    +--- io.reactivex:rxjava:1.1.9
|    +--- io.netty:netty-common:4.0.40.Final
|    +--- io.netty:netty-transport:4.0.40.Final
|    |    \--- io.netty:netty-buffer:4.0.40.Final
|    |         \--- io.netty:netty-common:4.0.40.Final
|    +--- io.netty:netty-handler:4.0.40.Final
|    |    +--- io.netty:netty-buffer:4.0.40.Final (*)
|    |    +--- io.netty:netty-transport:4.0.40.Final (*)
|    |    \--- io.netty:netty-codec:4.0.40.Final
|    |         \--- io.netty:netty-transport:4.0.40.Final (*)
|    \--- com.google.guava:guava:18.0
+--- org.slf4j:slf4j-api:1.7.25
+--- org.apache.logging.log4j:log4j-core:2.11.2
|    \--- org.apache.logging.log4j:log4j-api:2.11.2
+--- org.apache.logging.log4j:log4j-slf4j-impl:2.11.2
|    +--- org.slf4j:slf4j-api:1.7.25
|    +--- org.apache.logging.log4j:log4j-api:2.11.2
|    \--- org.apache.logging.log4j:log4j-core:2.11.2 (*)
+--- com.splunk.logging:splunk-library-javalogging:1.7.3
|    +--- org.apache.httpcomponents:httpclient:4.5.5 (*)
|    +--- org.apache.httpcomponents:httpasyncclient:4.1.3
|    |    +--- org.apache.httpcomponents:httpcore:4.4.6 -> 4.4.9
|    |    +--- org.apache.httpcomponents:httpcore-nio:4.4.6
|    |    |    \--- org.apache.httpcomponents:httpcore:4.4.6 -> 4.4.9
|    |    +--- org.apache.httpcomponents:httpclient:4.5.3 -> 4.5.5 (*)
|    |    \--- commons-logging:commons-logging:1.2
|    +--- org.apache.logging.log4j:log4j-api:2.10.0 -> 2.11.2
|    +--- org.apache.logging.log4j:log4j-core:2.10.0 -> 2.11.2 (*)
|    +--- com.googlecode.json-simple:json-simple:1.1.1
|    |    \--- junit:junit:4.10
|    |         \--- org.hamcrest:hamcrest-core:1.1
|    \--- com.google.code.gson:gson:2.2.4
\--- com.fasterxml.jackson.dataformat:jackson-dataformat-yaml:2.9.8
    +--- org.yaml:snakeyaml:1.23
    \--- com.fasterxml.jackson.core:jackson-core:2.9.8

runtimeClasspath - Runtime classpath of source set 'main'.
+--- com.univocity:univocity-parsers:2.7.6
+--- javax.annotation:javax.annotation-api:1.3.2
+--- org.apache.httpcomponents:httpclient:4.5 -> 4.5.5
|    +--- org.apache.httpcomponents:httpcore:4.4.9
|    +--- commons-logging:commons-logging:1.2
|    \--- commons-codec:commons-codec:1.10
+--- com.amazonaws:aws-lambda-java-core:1.2.0
+--- com.fasterxml.jackson.core:jackson-databind:2.8.3
|    +--- com.fasterxml.jackson.core:jackson-annotations:2.8.0
|    \--- com.fasterxml.jackson.core:jackson-core:2.8.3 -> 2.9.8
+--- biz.paluch.redis:lettuce:4.2.2.Final
|    +--- io.reactivex:rxjava:1.1.9
|    +--- io.netty:netty-common:4.0.40.Final
|    +--- io.netty:netty-transport:4.0.40.Final
|    |    \--- io.netty:netty-buffer:4.0.40.Final
|    |         \--- io.netty:netty-common:4.0.40.Final
|    +--- io.netty:netty-handler:4.0.40.Final
|    |    +--- io.netty:netty-buffer:4.0.40.Final (*)
|    |    +--- io.netty:netty-transport:4.0.40.Final (*)
|    |    \--- io.netty:netty-codec:4.0.40.Final
|    |         \--- io.netty:netty-transport:4.0.40.Final (*)
|    \--- com.google.guava:guava:18.0
+--- org.slf4j:slf4j-api:1.7.25
+--- org.apache.logging.log4j:log4j-core:2.11.2
|    \--- org.apache.logging.log4j:log4j-api:2.11.2
+--- org.apache.logging.log4j:log4j-slf4j-impl:2.11.2
|    +--- org.slf4j:slf4j-api:1.7.25
|    +--- org.apache.logging.log4j:log4j-api:2.11.2
|    \--- org.apache.logging.log4j:log4j-core:2.11.2 (*)
+--- com.splunk.logging:splunk-library-javalogging:1.7.3
|    +--- org.apache.httpcomponents:httpclient:4.5.5 (*)
|    +--- org.apache.httpcomponents:httpasyncclient:4.1.3
|    |    +--- org.apache.httpcomponents:httpcore:4.4.6 -> 4.4.9
|    |    +--- org.apache.httpcomponents:httpcore-nio:4.4.6
|    |    |    \--- org.apache.httpcomponents:httpcore:4.4.6 -> 4.4.9
|    |    +--- org.apache.httpcomponents:httpclient:4.5.3 -> 4.5.5 (*)
|    |    \--- commons-logging:commons-logging:1.2
|    +--- org.apache.logging.log4j:log4j-api:2.10.0 -> 2.11.2
|    +--- org.apache.logging.log4j:log4j-core:2.10.0 -> 2.11.2 (*)
|    +--- com.googlecode.json-simple:json-simple:1.1.1
|    |    \--- junit:junit:4.10
|    |         \--- org.hamcrest:hamcrest-core:1.1
|    \--- com.google.code.gson:gson:2.2.4
\--- com.fasterxml.jackson.dataformat:jackson-dataformat-yaml:2.9.8
    +--- org.yaml:snakeyaml:1.23
    \--- com.fasterxml.jackson.core:jackson-core:2.9.8

runtimeElements - Elements of runtime for main. (n)
No dependencies

runtimeOnly - Runtime only dependencies for source set 'main'. (n)
No dependencies

shadow
No dependencies

testAnnotationProcessor - Annotation processors and their dependencies for source set 'test'.
No dependencies

testCompile - Dependencies for source set 'test' (deprecated, use 'testImplementation' instead).
+--- com.univocity:univocity-parsers:2.7.6
+--- javax.annotation:javax.annotation-api:1.3.2
+--- org.apache.httpcomponents:httpclient:4.5 -> 4.5.5
|    +--- org.apache.httpcomponents:httpcore:4.4.9
|    +--- commons-logging:commons-logging:1.2
|    \--- commons-codec:commons-codec:1.10
+--- com.amazonaws:aws-lambda-java-core:1.2.0
+--- com.fasterxml.jackson.core:jackson-databind:2.8.3
|    +--- com.fasterxml.jackson.core:jackson-annotations:2.8.0
|    \--- com.fasterxml.jackson.core:jackson-core:2.8.3 -> 2.9.8
+--- biz.paluch.redis:lettuce:4.2.2.Final
|    +--- io.reactivex:rxjava:1.1.9
|    +--- io.netty:netty-common:4.0.40.Final
|    +--- io.netty:netty-transport:4.0.40.Final
|    |    \--- io.netty:netty-buffer:4.0.40.Final
|    |         \--- io.netty:netty-common:4.0.40.Final
|    +--- io.netty:netty-handler:4.0.40.Final
|    |    +--- io.netty:netty-buffer:4.0.40.Final (*)
|    |    +--- io.netty:netty-transport:4.0.40.Final (*)
|    |    \--- io.netty:netty-codec:4.0.40.Final
|    |         \--- io.netty:netty-transport:4.0.40.Final (*)
|    \--- com.google.guava:guava:18.0
+--- org.slf4j:slf4j-api:1.7.25
+--- org.apache.logging.log4j:log4j-core:2.11.2
|    \--- org.apache.logging.log4j:log4j-api:2.11.2
+--- org.apache.logging.log4j:log4j-slf4j-impl:2.11.2
|    +--- org.slf4j:slf4j-api:1.7.25
|    +--- org.apache.logging.log4j:log4j-api:2.11.2
|    \--- org.apache.logging.log4j:log4j-core:2.11.2 (*)
+--- com.splunk.logging:splunk-library-javalogging:1.7.3
|    +--- org.apache.httpcomponents:httpclient:4.5.5 (*)
|    +--- org.apache.httpcomponents:httpasyncclient:4.1.3
|    |    +--- org.apache.httpcomponents:httpcore:4.4.6 -> 4.4.9
|    |    +--- org.apache.httpcomponents:httpcore-nio:4.4.6
|    |    |    \--- org.apache.httpcomponents:httpcore:4.4.6 -> 4.4.9
|    |    +--- org.apache.httpcomponents:httpclient:4.5.3 -> 4.5.5 (*)
|    |    \--- commons-logging:commons-logging:1.2
|    +--- org.apache.logging.log4j:log4j-api:2.10.0 -> 2.11.2
|    +--- org.apache.logging.log4j:log4j-core:2.10.0 -> 2.11.2 (*)
|    +--- com.googlecode.json-simple:json-simple:1.1.1
|    |    \--- junit:junit:4.10
|    |         \--- org.hamcrest:hamcrest-core:1.1
|    \--- com.google.code.gson:gson:2.2.4
+--- com.fasterxml.jackson.dataformat:jackson-dataformat-yaml:2.9.8
|    +--- org.yaml:snakeyaml:1.23
|    \--- com.fasterxml.jackson.core:jackson-core:2.9.8
\--- org.mockito:mockito-core:2.1.0+ -> 2.1.0
    +--- net.bytebuddy:byte-buddy:1.4.26
    +--- net.bytebuddy:byte-buddy-agent:1.4.26
    \--- org.objenesis:objenesis:2.4

testCompileClasspath - Compile classpath for source set 'test'.
+--- com.univocity:univocity-parsers:2.7.6
+--- javax.annotation:javax.annotation-api:1.3.2
+--- org.apache.httpcomponents:httpclient:4.5 -> 4.5.5
|    +--- org.apache.httpcomponents:httpcore:4.4.9
|    +--- commons-logging:commons-logging:1.2
|    \--- commons-codec:commons-codec:1.10
+--- com.amazonaws:aws-lambda-java-core:1.2.0
+--- com.fasterxml.jackson.core:jackson-databind:2.8.3
|    +--- com.fasterxml.jackson.core:jackson-annotations:2.8.0
|    \--- com.fasterxml.jackson.core:jackson-core:2.8.3 -> 2.9.8
+--- biz.paluch.redis:lettuce:4.2.2.Final
|    +--- io.reactivex:rxjava:1.1.9
|    +--- io.netty:netty-common:4.0.40.Final
|    +--- io.netty:netty-transport:4.0.40.Final
|    |    \--- io.netty:netty-buffer:4.0.40.Final
|    |         \--- io.netty:netty-common:4.0.40.Final
|    +--- io.netty:netty-handler:4.0.40.Final
|    |    +--- io.netty:netty-buffer:4.0.40.Final (*)
|    |    +--- io.netty:netty-transport:4.0.40.Final (*)
|    |    \--- io.netty:netty-codec:4.0.40.Final
|    |         \--- io.netty:netty-transport:4.0.40.Final (*)
|    \--- com.google.guava:guava:18.0
+--- org.slf4j:slf4j-api:1.7.25
+--- org.apache.logging.log4j:log4j-core:2.11.2
|    \--- org.apache.logging.log4j:log4j-api:2.11.2
+--- org.apache.logging.log4j:log4j-slf4j-impl:2.11.2
|    +--- org.slf4j:slf4j-api:1.7.25
|    \--- org.apache.logging.log4j:log4j-api:2.11.2
+--- com.splunk.logging:splunk-library-javalogging:1.7.3
|    +--- org.apache.httpcomponents:httpclient:4.5.5 (*)
|    +--- org.apache.httpcomponents:httpasyncclient:4.1.3
|    |    +--- org.apache.httpcomponents:httpcore:4.4.6 -> 4.4.9
|    |    +--- org.apache.httpcomponents:httpcore-nio:4.4.6
|    |    |    \--- org.apache.httpcomponents:httpcore:4.4.6 -> 4.4.9
|    |    +--- org.apache.httpcomponents:httpclient:4.5.3 -> 4.5.5 (*)
|    |    \--- commons-logging:commons-logging:1.2
|    +--- org.apache.logging.log4j:log4j-api:2.10.0 -> 2.11.2
|    +--- org.apache.logging.log4j:log4j-core:2.10.0 -> 2.11.2 (*)
|    +--- com.googlecode.json-simple:json-simple:1.1.1
|    |    \--- junit:junit:4.10 -> 4.12
|    |         \--- org.hamcrest:hamcrest-core:1.3
|    \--- com.google.code.gson:gson:2.2.4
+--- com.fasterxml.jackson.dataformat:jackson-dataformat-yaml:2.9.8
|    +--- org.yaml:snakeyaml:1.23
|    \--- com.fasterxml.jackson.core:jackson-core:2.9.8
+--- org.mockito:mockito-core:2.1.0+ -> 2.1.0
+--- junit:junit:4.12 (*)
\--- org.junit.jupiter:junit-jupiter-api:5.1.0
    +--- org.apiguardian:apiguardian-api:1.0.0
    +--- org.opentest4j:opentest4j:1.0.0
    \--- org.junit.platform:junit-platform-commons:1.1.0
         \--- org.apiguardian:apiguardian-api:1.0.0

testCompileOnly - Compile only dependencies for source set 'test'.
\--- junit:junit:4.12
    \--- org.hamcrest:hamcrest-core:1.3

testImplementation - Implementation only dependencies for source set 'test'. (n)
\--- org.junit.jupiter:junit-jupiter-api:5.1.0 (n)

testRuntime - Runtime dependencies for source set 'test' (deprecated, use 'testRuntimeOnly' instead).
+--- com.univocity:univocity-parsers:2.7.6
+--- javax.annotation:javax.annotation-api:1.3.2
+--- org.apache.httpcomponents:httpclient:4.5 -> 4.5.5
|    +--- org.apache.httpcomponents:httpcore:4.4.9
|    +--- commons-logging:commons-logging:1.2
|    \--- commons-codec:commons-codec:1.10
+--- com.amazonaws:aws-lambda-java-core:1.2.0
+--- com.fasterxml.jackson.core:jackson-databind:2.8.3
|    +--- com.fasterxml.jackson.core:jackson-annotations:2.8.0
|    \--- com.fasterxml.jackson.core:jackson-core:2.8.3 -> 2.9.8
+--- biz.paluch.redis:lettuce:4.2.2.Final
|    +--- io.reactivex:rxjava:1.1.9
|    +--- io.netty:netty-common:4.0.40.Final
|    +--- io.netty:netty-transport:4.0.40.Final
|    |    \--- io.netty:netty-buffer:4.0.40.Final
|    |         \--- io.netty:netty-common:4.0.40.Final
|    +--- io.netty:netty-handler:4.0.40.Final
|    |    +--- io.netty:netty-buffer:4.0.40.Final (*)
|    |    +--- io.netty:netty-transport:4.0.40.Final (*)
|    |    \--- io.netty:netty-codec:4.0.40.Final
|    |         \--- io.netty:netty-transport:4.0.40.Final (*)
|    \--- com.google.guava:guava:18.0
+--- org.slf4j:slf4j-api:1.7.25
+--- org.apache.logging.log4j:log4j-core:2.11.2
|    \--- org.apache.logging.log4j:log4j-api:2.11.2
+--- org.apache.logging.log4j:log4j-slf4j-impl:2.11.2
|    +--- org.slf4j:slf4j-api:1.7.25
|    +--- org.apache.logging.log4j:log4j-api:2.11.2
|    \--- org.apache.logging.log4j:log4j-core:2.11.2 (*)
+--- com.splunk.logging:splunk-library-javalogging:1.7.3
|    +--- org.apache.httpcomponents:httpclient:4.5.5 (*)
|    +--- org.apache.httpcomponents:httpasyncclient:4.1.3
|    |    +--- org.apache.httpcomponents:httpcore:4.4.6 -> 4.4.9
|    |    +--- org.apache.httpcomponents:httpcore-nio:4.4.6
|    |    |    \--- org.apache.httpcomponents:httpcore:4.4.6 -> 4.4.9
|    |    +--- org.apache.httpcomponents:httpclient:4.5.3 -> 4.5.5 (*)
|    |    \--- commons-logging:commons-logging:1.2
|    +--- org.apache.logging.log4j:log4j-api:2.10.0 -> 2.11.2
|    +--- org.apache.logging.log4j:log4j-core:2.10.0 -> 2.11.2 (*)
|    +--- com.googlecode.json-simple:json-simple:1.1.1
|    |    \--- junit:junit:4.10
|    |         \--- org.hamcrest:hamcrest-core:1.1
|    \--- com.google.code.gson:gson:2.2.4
+--- com.fasterxml.jackson.dataformat:jackson-dataformat-yaml:2.9.8
|    +--- org.yaml:snakeyaml:1.23
|    \--- com.fasterxml.jackson.core:jackson-core:2.9.8
\--- org.mockito:mockito-core:2.1.0+ -> 2.1.0
    +--- net.bytebuddy:byte-buddy:1.4.26
    +--- net.bytebuddy:byte-buddy-agent:1.4.26
    \--- org.objenesis:objenesis:2.4

testRuntimeClasspath - Runtime classpath of source set 'test'.
+--- com.univocity:univocity-parsers:2.7.6
+--- javax.annotation:javax.annotation-api:1.3.2
+--- org.apache.httpcomponents:httpclient:4.5 -> 4.5.5
|    +--- org.apache.httpcomponents:httpcore:4.4.9
|    +--- commons-logging:commons-logging:1.2
|    \--- commons-codec:commons-codec:1.10
+--- com.amazonaws:aws-lambda-java-core:1.2.0
+--- com.fasterxml.jackson.core:jackson-databind:2.8.3
|    +--- com.fasterxml.jackson.core:jackson-annotations:2.8.0
|    \--- com.fasterxml.jackson.core:jackson-core:2.8.3 -> 2.9.8
+--- biz.paluch.redis:lettuce:4.2.2.Final
|    +--- io.reactivex:rxjava:1.1.9
|    +--- io.netty:netty-common:4.0.40.Final
|    +--- io.netty:netty-transport:4.0.40.Final
|    |    \--- io.netty:netty-buffer:4.0.40.Final
|    |         \--- io.netty:netty-common:4.0.40.Final
|    +--- io.netty:netty-handler:4.0.40.Final
|    |    +--- io.netty:netty-buffer:4.0.40.Final (*)
|    |    +--- io.netty:netty-transport:4.0.40.Final (*)
|    |    \--- io.netty:netty-codec:4.0.40.Final
|    |         \--- io.netty:netty-transport:4.0.40.Final (*)
|    \--- com.google.guava:guava:18.0
+--- org.slf4j:slf4j-api:1.7.25
+--- org.apache.logging.log4j:log4j-core:2.11.2
|    \--- org.apache.logging.log4j:log4j-api:2.11.2
+--- org.apache.logging.log4j:log4j-slf4j-impl:2.11.2
|    +--- org.slf4j:slf4j-api:1.7.25
|    +--- org.apache.logging.log4j:log4j-api:2.11.2
|    \--- org.apache.logging.log4j:log4j-core:2.11.2 (*)
+--- com.splunk.logging:splunk-library-javalogging:1.7.3
|    +--- org.apache.httpcomponents:httpclient:4.5.5 (*)
|    +--- org.apache.httpcomponents:httpasyncclient:4.1.3
|    |    +--- org.apache.httpcomponents:httpcore:4.4.6 -> 4.4.9
|    |    +--- org.apache.httpcomponents:httpcore-nio:4.4.6
|    |    |    \--- org.apache.httpcomponents:httpcore:4.4.6 -> 4.4.9
|    |    +--- org.apache.httpcomponents:httpclient:4.5.3 -> 4.5.5 (*)
|    |    \--- commons-logging:commons-logging:1.2
|    +--- org.apache.logging.log4j:log4j-api:2.10.0 -> 2.11.2
|    +--- org.apache.logging.log4j:log4j-core:2.10.0 -> 2.11.2 (*)
|    +--- com.googlecode.json-simple:json-simple:1.1.1
|    |    \--- junit:junit:4.10 -> 4.12
|    |         \--- org.hamcrest:hamcrest-core:1.3
|    \--- com.google.code.gson:gson:2.2.4
+--- com.fasterxml.jackson.dataformat:jackson-dataformat-yaml:2.9.8
|    +--- org.yaml:snakeyaml:1.23
|    \--- com.fasterxml.jackson.core:jackson-core:2.9.8
+--- org.mockito:mockito-core:2.1.0+ -> 2.1.0
|    +--- net.bytebuddy:byte-buddy:1.4.26
|    +--- net.bytebuddy:byte-buddy-agent:1.4.26
|    \--- org.objenesis:objenesis:2.4
+--- org.junit.jupiter:junit-jupiter-api:5.1.0
|    +--- org.apiguardian:apiguardian-api:1.0.0
|    +--- org.opentest4j:opentest4j:1.0.0
|    \--- org.junit.platform:junit-platform-commons:1.1.0
|         \--- org.apiguardian:apiguardian-api:1.0.0
+--- org.junit.jupiter:junit-jupiter-engine:5.1.0
|    +--- org.apiguardian:apiguardian-api:1.0.0
|    +--- org.junit.platform:junit-platform-engine:1.1.0
|    |    +--- org.apiguardian:apiguardian-api:1.0.0
|    |    +--- org.junit.platform:junit-platform-commons:1.1.0 (*)
|    |    \--- org.opentest4j:opentest4j:1.0.0
|    \--- org.junit.jupiter:junit-jupiter-api:5.1.0 (*)
\--- org.junit.vintage:junit-vintage-engine:5.1.0
    +--- org.apiguardian:apiguardian-api:1.0.0
    +--- org.junit.platform:junit-platform-engine:1.1.0 (*)
    \--- junit:junit:4.12 (*)

testRuntimeOnly - Runtime only dependencies for source set 'test'. (n)
+--- org.junit.jupiter:junit-jupiter-engine:5.1.0 (n)
\--- org.junit.vintage:junit-vintage-engine:5.1.0 (n)

(*) - dependencies omitted (listed previously)

(n) - Not resolved (configuration is not meant to be resolved)

[wilkinsona]

@angkar Please read our guidelines for contributing and the existing comments on the issue before adding one of your own. As already noted above, this is a Lettuce problem and has nothing to do with Spring Boot. Even more so in your case, as Spring Boot is not in your dependencies.

[angkar]

Apologies - will move it to the lettuce issues

[Marviszhao]

Looks like you have netty 4.0 and 4.1 on the classpath. Please remove netty 4.0. This is, in any case, not a Spring Boot or Spring Data Redis issue.

I meet the same problem conflict with hbase-client 1.2.0 thanks！

[Hick-Salmon]

I met the same problem conflict when I use spring-boot-starter-data-redis.

This is my RedisConfig

package org.xtj.question.questionOne.config;

import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Component;
import javax.annotation.Resource;

@Component
public class RedisConfig {
    @Resource
    RedisTemplate<String, String> redisTemplate;


    public String get(String key) {
        if ("".equals(key)) {
            return null;
        }
        return redisTemplate.opsForValue().get(key);
    }

    public void set(String key, String value) {
        if ("".equals(key) || "".equals(value)) {
            return;
        }
        redisTemplate.opsForValue().set(key, value);
    }
}

and this is my application.yml

server:
  port: 80
spring:
  redis:
    host: *.*.*.* #I used my own server
    port: 6377
    database: 0
    timeout: 30000

and in my own server I can get the test value with the right key,when I through progress,It always appear this case.I am a new development，I had build another redis test again，but this case appeared again，please help me，thank you very much.