SLF4J: Class path contains multiple SLF4J bindings.——Hive启动输出_启动hive报slf4j: class path contains multiple slf4j b

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项目场景：

系统：Ubuntu20.04
Hadoop版本：Hadoop3.3.1
Hbase版本：Hive3.1.2

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问题描述：

在启动 Hive 时，出现如下输出：

hadoop@fzqs-Laptop:/usr/local/hive/lib$ hive
SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/usr/local/hive/lib/log4j-slf4j-impl-2.10.0.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/usr/local/hadoop/share/hadoop/common/lib/slf4j-log4j12-1.7.25.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
SLF4J: Actual binding is of type [org.apache.logging.slf4j.Log4jLoggerFactory]
SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/usr/local/hive/lib/log4j-slf4j-impl-2.10.0.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/usr/local/hadoop/share/hadoop/common/lib/slf4j-log4j12-1.7.25.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
SLF4J: Actual binding is of type [org.apache.logging.slf4j.Log4jLoggerFactory]
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原因分析：

原因很简单，Hive 是自带有 Hadoop 中的相关依赖文件的，在本地装好 Hive 后，Hadoop 中的文件与 Hive 中的文件都有相关类的定义，从而导致如上输出。

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解决方案：

删除 Hadoop（或 Hive）中相重复定义的文件，如上一条输出如下：

SLF4J: Found binding in [jar:file:/usr/local/hive/lib/log4j-slf4j-impl-2.10.0.jar!
/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/usr/local/hadoop/share/hadoop/common/lib/slf4j-log4j12-1.7.25.jar!
/org/slf4j/impl/StaticLoggerBinder.class]

标红地方即是重复文件的位置，进入该位置：

cd /usr/local/hive/lib
ls slf4j*
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输出如下，

hadoop@fzqs-Laptop:/usr/local/hadoop/share/hadoop/common/lib$ ls slf4j*
log4j-slf4j-impl-2.10.0.jar

删除含有 logs 的文件即可：

sudo rm ./log4j-slf4j-impl-2.10.0.jar
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