Apache Hive 是基于 Hadoop 之上构建的, 所以还需要 Hadoop 的依赖，配置好HADOOP_CLASSPATH即可。这一点非常重要，否则在使用FlinkSQL Cli查询Hive中的表时，会报如下错误：
Exception in thread "main" org.apache.flink.table.client.SqlClientException: Unexpected exception. This is a bug. Please consider filing an issue.
at org.apache.flink.table.client.SqlClient.main(SqlClient.java:215)
Caused by: org.apache.flink.table.client.gateway.SqlExecutionException: Could not create execution context.
at org.apache.flink.table.client.gateway.local.ExecutionContext$Builder.build(ExecutionContext.java:972)
at org.apache.flink.table.client.gateway.local.LocalExecutor.openSession(LocalExecutor.java:225)
at org.apache.flink.table.client.SqlClient.start(SqlClient.java:108)
at org.apache.flink.table.client.SqlClient.main(SqlClient.java:201)
Caused by: java.lang.NoClassDefFoundError: org/apache/hadoop/conf/Configuration
at org.apache.flink.table.catalog.hive.factories.HiveCatalogFactory.createCatalog(HiveCatalogFactory.java:89)
at org.apache.flink.table.client.gateway.local.ExecutionContext.createCatalog(ExecutionContext.java:396)
at org.apache.flink.table.client.gateway.local.ExecutionContext.lambda$null$5(ExecutionContext.java:684)
at java.util.HashMap.forEach(HashMap.java:1288)
at org.apache.flink.table.client.gateway.local.ExecutionContext.lambda$initializeCatalogs$6(ExecutionContext.java:681)
at org.apache.flink.table.client.gateway.local.ExecutionContext.wrapClassLoader(ExecutionContext.java:265)
at org.apache.flink.table.client.gateway.local.ExecutionContext.initializeCatalogs(ExecutionContext.java:677)
at org.apache.flink.table.client.gateway.local.ExecutionContext.initializeTableEnvironment(ExecutionContext.java:565)
at org.apache.flink.table.client.gateway.local.ExecutionContext.(ExecutionContext.java:187)
at org.apache.flink.table.client.gateway.local.ExecutionContext.(ExecutionContext.java:138)
at org.apache.flink.table.client.gateway.local.ExecutionContext$Builder.build(ExecutionContext.java:961)
... 3 more
Caused by: java.lang.ClassNotFoundException: org.apache.hadoop.conf.Configuration
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:335)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
解决办法一：
配置HADOOP_CLASSPATH，需要在/etc/profile文件中配置如下的环境变量：
export HADOOP_CLASSPATH=`hadoop classpath`
配置环境变量 一定要 source
如果上面不生效，解决办法二：
在flink/bin/start-cluster.sh中添加
export HADOOP_CLASSPATH=`hadoop classpath`
重新启动
