HIVE无法正常启动，报找不到jdbc的驱动类

通过启动脚本：

cd $HIVE_HOME

./bin/hive  --hiveconf hive.root.logger=DEBUG,console

启动报如下错误：

16/08/25 19:06:18 [main]: DEBUG bonecp.BoneCPDataSource: JDBC URL = 

        jdbc:mysql://slave1:3306/hive?createDatabaseIfNotExist=true

, Username = hive, partitions = 1, max (per partition) = 10, min (per partition) = 0, idle max age = 60 min, idle test period = 240 min, strategy = DEFAULT

16/08/25 19:06:19 [BoneCP-pool-watch-thread]: ERROR bonecp.BoneCP: Failed to acquire connection to 

        jdbc:mysql://slave1:3306/hive?createDatabaseIfNotExist=true

. Sleeping for 7000 ms. Attempts left: 5

java.sql.SQLException: No suitable driver found for 

        jdbc:mysql://slave1:3306/hive?createDatabaseIfNotExist=true

        at java.sql.DriverManager.getConnection(DriverManager.java:689)

        at java.sql.DriverManager.getConnection(DriverManager.java:208)

        at com.jolbox.bonecp.BoneCP.obtainRawInternalConnection(BoneCP.java:361)

        at com.jolbox.bonecp.BoneCP.obtainInternalConnection(BoneCP.java:269)

        at com.jolbox.bonecp.ConnectionHandle.(ConnectionHandle.java:242)

        at com.jolbox.bonecp.PoolWatchThread.fillConnections(PoolWatchThread.java:115)

        at com.jolbox.bonecp.PoolWatchThread.run(PoolWatchThread.java:82)

        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

        at java.lang.Thread.run(Thread.java:745)

这是报没有找到连接mysql的jdbc驱动，但是实际上$HIVE_HOME/lib下已经有mysql的驱动包了

[hadoop@master lib]$ ll mysql-connector-java-5.1.33.jar

-rw-rw-r--. 1 hadoop hadoop 959984 Apr 21  2015 mysql-connector-java-5.1.33.jar

说明驱动包没有问题，经过百度后发现是配置文件$HIVE_HOME/conf/hive-site.xml内配置有问题：

   javax.jdo.option.ConnectionURL

   

        jdbc:mysql://slave1:3306/hive?createDatabaseIfNotExist=true

   JDBC connect string for a JDBC metastore

上面是原来的配置，下面是修改后的配置：

   javax.jdo.option.ConnectionURL

   jdbc:mysql://slave1:3306/hive?createDatabaseIfNotExist=true

   JDBC connect string for a JDBC metastore

原因是配置文件中的中的内容必须在同一行上且不能有空格，即不能包含换行符和空格，否则就会出错，请检查其它的配置是否还在存在这类问题。

修改完成后，再次启动就成功了。

[hadoop@master bin]$ ./hive

Logging initialized using configuration in file:/home/hadoop/bigdataspace/hive-1.1.0-cdh5.5.0/conf/hive-log4j.properties

WARNING: Hive CLI is deprecated and migration to Beeline is recommended.

hive (default)> show tables ;

OK

tab_name

Time taken: 0.64 seconds

hive (default)>