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
