启动hive时：Hive Failed to connect to the MetaStore Server

启动hive时：Hive Failed to connect to the MetaStore Server

标签（空格分隔）： 大数据问题

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问题描述

Exception in thread "main" java.lang.RuntimeException: java.lang.RuntimeException: Unable to instantiate org.apache.hadoop.hive.metastore.HiveMetaStoreClient
        at org.apache.hadoop.hive.ql.session.SessionState.start(SessionState.java:371)
        at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:689)
        at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:633)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at org.apache.hadoop.util.RunJar.main(RunJar.java:212)
Caused by: java.lang.RuntimeException: Unable to instantiate org.apache.hadoop.hive.metastore.HiveMetaStoreClient
        at org.apache.hadoop.hive.metastore.MetaStoreUtils.newInstance(MetaStoreUtils.java:1426)
        at org.apache.hadoop.hive.metastore.RetryingMetaStoreClient.(RetryingMetaStoreClient.java:63)
        at org.apache.hadoop.hive.metastore.RetryingMetaStoreClient.getProxy(RetryingMetaStoreClient.java:73)
        at org.apache.hadoop.hive.ql.metadata.Hive.createMetaStoreClient(Hive.java:2625)
        at org.apache.hadoop.hive.ql.metadata.Hive.getMSC(Hive.java:2644)
        at org.apache.hadoop.hive.ql.session.SessionState.start(SessionState.java:365)
        ... 7 more
Caused by: java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
        at org.apache.hadoop.hive.metastore.MetaStoreUtils.newInstance(MetaStoreUtils.java:1424)
        ... 12 more
Caused by: MetaException(message:Could not connect to meta store using any of the URIs provided. Most recent failure: org.apache.thrift.transport.TTransportException: java.net.ConnectException: Connection refused
        at org.apache.thrift.transport.TSocket.open(TSocket.java:185)
        at org.apache.hadoop.hive.metastore.HiveMetaStoreClient.open(HiveMetaStoreClient.java:351)
        at org.apache.hadoop.hive.metastore.HiveMetaStoreClient.(HiveMetaStoreClient.java:219)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
        at org.apache.hadoop.hive.metastore.MetaStoreUtils.newInstance(MetaStoreUtils.java:1424)
        at org.apache.hadoop.hive.metastore.RetryingMetaStoreClient.(RetryingMetaStoreClient.java:63)
        at org.apache.hadoop.hive.metastore.RetryingMetaStoreClient.getProxy(RetryingMetaStoreClient.java:73)
        at org.apache.hadoop.hive.ql.metadata.Hive.createMetaStoreClient(Hive.java:2625)
        at org.apache.hadoop.hive.ql.metadata.Hive.getMSC(Hive.java:2644)
        at org.apache.hadoop.hive.ql.session.SessionState.start(SessionState.java:365)
        at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:689)
        at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:633)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at org.apache.hadoop.util.RunJar.main(RunJar.java:212)
Caused by: java.net.ConnectException: Connection refused
        at java.net.PlainSocketImpl.socketConnect(Native Method)
        at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339)
        at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200)
        at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)
        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
        at java.net.Socket.connect(Socket.java:579)
        at org.apache.thrift.transport.TSocket.open(TSocket.java:180)
        ... 19 more
)
        at org.apache.hadoop.hive.metastore.HiveMetaStoreClient.open(HiveMetaStoreClient.java:398)
        at org.apache.hadoop.hive.metastore.HiveMetaStoreClient.(HiveMetaStoreClient.java:219)
        ... 17 more

解决方案：
我的解决方案是：
1）先检查mysql 链接jdbc使用到的启动 JAR是否放到 hive/lib 下面。
2）在hive运行的服务器，使得mysql命令行，看能否成功链接到mysql服务器。我的hive有mysql运行在同一台机器上，使用root用户登陆mysql，创建帐户（hive），赋予权限后，hive 还是不能登录，根据错误信息，在网上找到的问题原因是：mysql库中的user表中存在user 为空的记录，解决方案是：删除user表中user字段为空的记录。最后不能要忘了运行：flush privileges 命令。确认hive账户可以在运行hive服务的机器上登录mysql服务器；
3）正确配置hive-site.xml。
4）我遇到的问题是：配置完 hive-site.xml后，运行 show tables ，同样报上述错误。再次检查hive-site.xml 配置，发现：
Xml代码

<property>  
  <name>hive.metastore.urisname>  
  <value>thrift://xxxxxxxxvalue>  
  <description>Thrift uri for the remote metastore. Used by metastore client to connect to remote metastore.description>  
property>

我不知道这个配置是干什么用的。果断清空value的值。再次运行show databases命令。成功！！！！
5）再次提醒读者朋友们：当你们的错误信息与上述错误相似时，请认真检查 hive.metastore.uris 的value 配置是否正确。建义新手不要配置。
最后与大家分享我的hive-site.xml配置：
Xml代码

<property>  
  <name>javax.jdo.option.ConnectionURLname>  
  <value>jdbc:mysql://127.0.0.1:3306/metastore_db?createDatabaseIfNotExist=truevalue>  
  <description>JDBC connect string for a JDBC metastoredescription>  
property>  

<property>  
  <name>javax.jdo.option.ConnectionDriverNamename>  
  <value>com.mysql.jdbc.Drivervalue>  
  <description>Driver class name for a JDBC metastoredescription>  
property>  

<property>  
  <name>javax.jdo.option.ConnectionUserNamename>  
  <value>hivevalue>  
  <description>username to use against metastore databasedescription>  
property>  

<property>  
  <name>javax.jdo.option.ConnectionPasswordname>  
  <value>a123value>  
  <description>password to use against metastore databasedescription>  
property>  

新手只需要配置上述四处及可。