[GitHub] [hive] zhangbutao commented on a diff in pull request #3388: HIVE-26045: Detect timed out connections for providers and auto-reconnect

[GitBox <gi...@apache.org>]

zhangbutao commented on code in PR #3388:
URL: https://github.com/apache/hive/pull/3388#discussion_r959254530


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standalone-metastore/metastore-server/src/main/java/org/apache/hadoop/hive/metastore/dataconnector/jdbc/MySQLConnectorProvider.java:
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@@ -27,14 +27,27 @@
 import java.sql.ResultSet;
 import java.sql.SQLException;
 import java.sql.Statement;
+import java.util.Properties;
 
 public class MySQLConnectorProvider extends AbstractJDBCConnectorProvider {
   private static Logger LOG = LoggerFactory.getLogger(MySQLConnectorProvider.class);
 
   private static final String DRIVER_CLASS = "com.mysql.jdbc.Driver";
 
+  public static final String JDBC_MYSQL_CONFIG_PREFIX = "hive.sql.mysql";
+  public static final String JDBC_MYSQL_AUTO_RECONNECT = JDBC_MYSQL_CONFIG_PREFIX + ".auto.reconnect";

Review Comment:
   These parameters are used in MySQL jdbc-url, and can be override by MySQL connector DCPROPERTIES.  You can check the changer in dataconnector_mysql.q.



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