Hive客户端启动报SLF4J: Class path contains multiple SLF4J bindings.

使用Hive客户端的时候，如果不注意细节，那么会遇到一个问题：重复打印输出SLF4J信息

文章目录

1、出现的问题
2、根本原因
3、解决方法
4、查看最终效果
5、PS：hive日志在哪呐？

1、出现的问题

[root@hadoop11 lib]# hive
SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/datafs/hive/lib/log4j-slf4j-impl-2.10.0.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/datafs/hadoop/hadoop-3.1.1/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]
which: no hbase in (/datafs/zookeeper/bin:/datafs/zookeeper/conf:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.292.b10-1.el7_9.aarch64/bin:/datafs/hadoop/hadoop-3.1.1/bin:/datafs/hadoop/hadoop-3.1.1/sbin:/datafs/hadoop/hadoop-3.1.1/libexec:/datafs/hive/bin:/datafs/sqoop-1.4.7.bin__hadoop-2.6.0/bin:/root/bin)
SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/datafs/hive/lib/log4j-slf4j-impl-2.10.0.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/datafs/hadoop/hadoop-3.1.1/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]
Hive Session ID = cb494b0f-cab0-467b-b217-2388d307df78Logging initialized using configuration in file:/datafs/hive/conf/hive-log4j2.properties Async: true
Hive Session ID = e75c9708-c257-461f-a740-621d0ec15c92
Hive-on-MR is deprecated in Hive 2 and may not be available in the future versions. Consider using a different execution engine (i.e. spark, tez) or using Hive 1.X releases.
hive> [root@hadoop11 lib]#

如果使用过程中没出上述报错，可以把这个问题可以忽略

2、根本原因

log4j-slf4j-impl-2.10.0.jar这个 jar包没有干掉

3、解决方法

干掉 log4j-slf4j-impl-2.10.0.jar

[root@hadoop11 lib]# mv log4j-slf4j-impl-2.10.0.jar log4j-slf4j-impl-2.10.0.jar.bak

4、查看最终效果

[root@hadoop139 lib]# hive
which: no hbase in (/datafs/zookeeper/bin:/datafs/zookeeper/conf:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.292.b10-1.el7_9.aarch64/bin:/datafs/hadoop/hadoop-3.1.1/bin:/datafs/hadoop/hadoop-3.1.1/sbin:/datafs/hadoop/hadoop-3.1.1/libexec:/datafs/hive/bin:/datafs/sqoop-1.4.7.bin__hadoop-2.6.0/bin:/root/bin)
Hive Session ID = 3d4539f8-c091-4d52-935f-af592ece0335Logging initialized using configuration in file:/datafs/hive/conf/hive-log4j2.properties Async: true
Hive-on-MR is deprecated in Hive 2 and may not be available in the future versions. Consider using a different execution engine (i.e. spark, tez) or using Hive 1.X releases.
Hive Session ID = da41b52a-d740-4dc5-bd73-45f696ef7ea2
hive> [root@hadoop139 lib]#

其实还是有点问题，不过这个hive跟hbase没多大关系，暂时忽略就OK了，
主要是把日志那一块去掉了

5、PS：hive日志在哪呐？

/datafs/hive/conf/hive-log4j2.properties

这个文件是配置hive日志存放目录

${sys:java.io.tmpdir}/${sys:user.name}
默认存放目录

可以找到hive日志文件

做技术，一定要严谨！！！

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