因为spark默认的元数据存储在derby，derby是单session的，启动多个会报错，杀掉多余进程解决。
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在hive中执行sql语句：SemanticException org.apache.hadoop.hive.ql.metadata.HiveException:
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Hive之FAILED: Unable to instantiate org.apache.hadoop.hive.ql.metadata.SessionHiveMetaStoreClient异常
Hive报错：FAILED: HiveException java.lang.RuntimeException: Unable to instantiate org.apache.hadoop.hive.ql.me
关于hive异常：Unable to instantiate org.apache.hadoop.hive.ql.metadata.SessionHiveMetaStor
hive创建表失败：FAILED: Execution Error, return code 1 from org.apache.hadoop.hive.ql.exec.DDLTask. MetaEx
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