hive問題： For direct MetaStore DB connections, we don't support retries at the client level

已經配置好hive，mysql作為元數據的數據庫。在hive中執行drop語句出錯：

drop table mytest;

錯誤提示如下：

FAILED: SemanticException Unable to fetch table ljz. For direct MetaStore DB connections, we don't support retries at the client level.

 我用的mysql-connctor版本是mysql-connector-java-5.1.17.jar

后來找到一個mysql-connector-java-5.1.34-bin.jar版本的， 將前者替換，重啟hive后執行drop語句，竟然可以了。

神奇了。