因為spark默認的元數據存儲在derby，derby是單session的，啟動多個會報錯，殺掉多余進程解決。
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在hive中執行sql語句：SemanticException org.apache.hadoop.hive.ql.metadata.HiveException:
org.apache.hadoop.hive.ql.metadata.HiveException: java.lang.RuntimeException: native snappy library not available
SemanticException org.apache.hadoop.hive.ql.metadata.HiveException:java.lang.RuntimeExcepti
org.apache.hadoop.hive.ql.metadata.HiveException: Unable to move source錯誤解決辦法
hive報錯 FAILED: HiveException java.lang.RuntimeException: Unable to instantiate org.apache.hadoop.hive.ql.metadata.SessionHiveMetaStoreClient
Hive之FAILED: Unable to instantiate org.apache.hadoop.hive.ql.metadata.SessionHiveMetaStoreClient異常
Hive報錯：FAILED: HiveException java.lang.RuntimeException: Unable to instantiate org.apache.hadoop.hive.ql.me
關於hive異常：Unable to instantiate org.apache.hadoop.hive.ql.metadata.SessionHiveMetaStor
hive創建表失敗：FAILED: Execution Error, return code 1 from org.apache.hadoop.hive.ql.exec.DDLTask. MetaEx
FAILED: NoMatchingMethodException No matching method for class org.apache.hadoop.hive.ql.udf.UDFToString with (struct