JAVA高级面试进阶训练营视频教程

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一、异常现象

hive初始化数据库时，在执行了

schematool  -initSchema -dbType mysql 

这个命令时，终端抛出如下异常：

[ray@rayner bin]$ schematool  -initSchema -dbType mysql 
Metastore connection URL:        jdbc:derby:;databaseName=metastore_db;create=true
Metastore Connection Driver :    org.apache.derby.jdbc.EmbeddedDriver
Metastore connection User:       APP
Starting metastore schema initialization to 1.1.0
Initialization script hive-schema-1.1.0.mysql.sql
[ERROR] Terminal initialization failed; falling back to unsupported java.lang.IncompatibleClassChangeError: Found class jline.Terminal, but interface was expected
        at jline.TerminalFactory.create(TerminalFactory.java:101)
        at jline.TerminalFactory.get(TerminalFactory.java:158)
        at org.apache.hive.beeline.BeeLineOpts.<init>(BeeLineOpts.java:73)
        at org.apache.hive.beeline.BeeLine.<init>(BeeLine.java:117)
        at org.apache.hive.beeline.HiveSchemaTool.runBeeLine(HiveSchemaTool.java:346)
        at org.apache.hive.beeline.HiveSchemaTool.runBeeLine(HiveSchemaTool.java:326)
        at org.apache.hive.beeline.HiveSchemaTool.doInit(HiveSchemaTool.java:266)
        at org.apache.hive.beeline.HiveSchemaTool.doInit(HiveSchemaTool.java:243)
        at org.apache.hive.beeline.HiveSchemaTool.main(HiveSchemaTool.java:470)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at org.apache.hadoop.util.RunJar.run(RunJar.java:221)
        at org.apache.hadoop.util.RunJar.main(RunJar.java:136)

Exception in thread "main" java.lang.IncompatibleClassChangeError: Found class jline.Terminal, but interface was expected
        at org.apache.hive.beeline.BeeLineOpts.<init>(BeeLineOpts.java:101)
        at org.apache.hive.beeline.BeeLine.<init>(BeeLine.java:117)
        at org.apache.hive.beeline.HiveSchemaTool.runBeeLine(HiveSchemaTool.java:346)
        at org.apache.hive.beeline.HiveSchemaTool.runBeeLine(HiveSchemaTool.java:326)
        at org.apache.hive.beeline.HiveSchemaTool.doInit(HiveSchemaTool.java:266)
        at org.apache.hive.beeline.HiveSchemaTool.doInit(HiveSchemaTool.java:243)
        at org.apache.hive.beeline.HiveSchemaTool.main(HiveSchemaTool.java:470)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at org.apache.hadoop.util.RunJar.run(RunJar.java:221)
        at org.apache.hadoop.util.RunJar.main(RunJar.java:136)

 

二、异常原因

 jar版本包冲突

Hadoop lib 下已经存在了 jline 0.9x ，但是在hive中将Jline升级到了Jline2。

启动hive的时候，由于hive依赖hadoop，启动hive，会将hadoop的配置以及jar包等等导入到hive中，导致jar包版本冲突。

 

三、异常解决

 

 

如上图：将hive的新版jline，替换hadoop的老版本即可。

 

注：hadoop中的jline所在目录为：

/developer/hadoop-2.6.0/share/hadoop/yarn/lib

 

 

四、参考资料

1.Hive startup -[ERROR] Terminal initialization failed; falling back to unsupported

2.[ERROR] Terminal initialization failed; falling back to unsupported java.lang.IncompatibleClassChangeError: Found class jline.Terminal, but interface was expected

4.Hive on Spark: Getting Started--常见异常