使用Hive-JDBC遇到的一些问题解决

1.java.lang.NoClassDefFoundError: org/apache/hive/service/cli/thrift/TCLIService$Iface

使用JDBC驱动连接到hive的时候，出现了NoClassDefFoundError的错误，提示找不到Iface接口这个类。

Hive版本1.1

java.lang.NoClassDefFoundError: org/apache/hive/service/cli/thrift/TCLIService$Iface
at org.apache.hive.jdbc.HiveDriver.connect(HiveDriver.java:105)
at java.sql.DriverManager.getConnection(DriverManager.java:664)
at java.sql.DriverManager.getConnection(DriverManager.java:208)
at com.bonc.vbap.data.query.jdbc.spring.datasource.DriverManagerDataSource.getConnectionFromDriverManager(DriverManagerDataSource.java:116)
at com.bonc.vbap.data.query.jdbc.spring.datasource.DriverManagerDataSource.getConnectionFromDriver(DriverManagerDataSource.java:107)
at com.bonc.vbap.data.query.jdbc.spring.datasource.DriverManagerDataSource.getConnectionFromDriver(DriverManagerDataSource.java:191)
at com.bonc.vbap.data.query.jdbc.spring.datasource.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:161)
at com.bonc.vbap.data.query.jdbc.ConnectionManager.getConnection(ConnectionManager.java:63)
at com.bonc.vbap.data.schema.jdbc.JdbcSchemaContext$SchemaHelper.getConnection(JdbcSchemaContext.java:308)
at com.bonc.vbap.data.schema.jdbc.JdbcSchemaContext$SchemaHelper.<init>(JdbcSchemaContext.java:112)
at com.bonc.vbap.data.schema.jdbc.JdbcSchemaContext.getSchemaHelper(JdbcSchemaContext.java:68)
at com.bonc.vbap.data.schema.jdbc.JdbcSchemaContext.getSchemaNames(JdbcSchemaContext.java:43)
at com.bonc.vbap.data.service.impl.SchemaServiceImpl.getSchemaNames(SchemaServiceImpl.java:34)
at com.bonc.vbap.data.schema.jdbc.TestJdbcColumn.testHiveDataQuery(TestJdbcColumn.java:252)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:52)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86)
at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:252)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:94)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:191)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:678)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
Caused by: java.lang.ClassNotFoundException: org.apache.hive.service.cli.thrift.TCLIService$Iface
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 44 more

根据错误定位到..HiveDriver类105行的位置

public Connection connect(String url, Properties info) throws SQLException {
return acceptsURL(url) ? new HiveConnection(url, info) : null;
}

发现在HiveConnection中有调用TCLIService.Iface接口

...
TCLIService.Iface client = new TCLIService.Client(new TBinaryProtocol(transport));
TOpenSessionResp openResp = client.OpenSession(new TOpenSessionReq());
if (openResp != null) {
client.CloseSession(new TCloseSessionReq(openResp.getSessionHandle()));
}
...

在这里抛了找不到Iface的异常，但是点进去TCLIService类中，确是存在Iface接口，所以说找不到不是因为不存在，而是出现重复的类。

@SuppressWarnings({"cast", "rawtypes", "serial", "unchecked"})
@Generated(value = "Autogenerated by Thrift Compiler (0.9.3)")
public class TCLIService {

public interface Iface {

public TOpenSessionResp OpenSession(TOpenSessionReq req) throws org.apache.thrift.TException;

public TCloseSessionResp CloseSession(TCloseSessionReq req) throws org.apache.thrift.TException;
.....

所以去看下引入的依赖包，发现有hive-service和hive-service-rpc两个包中有相同的源码，所以在这里会抛异常，我就先把这其中一个依赖从hive-jdbc中去除掉，但是发现还是抛异常，我这里用的hive-jdbc1.1版本，发现hive-service是2.1版本，所以立马把两个都去除掉，重新引入一个hive-service进来就好拉

<dependency>
<groupId>org.apache.hive</groupId>
<artifactId>hive-jdbc</artifactId>
<exclusions>
<exclusion>
<groupId>org.apache.hive</groupId>
<artifactId>hive-service-rpc</artifactId>
</exclusion>
<exclusion>
<groupId>org.apache.hive</groupId>
<artifactId>hive-service</artifactId>
</exclusion>
</exclusions>
<version>1.1.0</version>
</dependency>
<dependency>
<groupId>org.apache.hive</groupId>
<artifactId>hive-service</artifactId>
<version>1.1.0</version>
</dependency>

2.上述的问题解决之后，又出现了一个新的问题：java.lang.NoClassDefFoundError: org/apache/hadoop/conf/Configuration

异常详情：

java.lang.NoClassDefFoundError: org/apache/hadoop/conf/Configuration
at org.apache.hive.jdbc.HiveConnection.createBinaryTransport(HiveConnection.java:393)
at org.apache.hive.jdbc.HiveConnection.openTransport(HiveConnection.java:187)
at org.apache.hive.jdbc.HiveConnection.<init>(HiveConnection.java:163)
at org.apache.hive.jdbc.HiveDriver.connect(HiveDriver.java:105)
at java.sql.DriverManager.getConnection(DriverManager.java:664)
at java.sql.DriverManager.getConnection(DriverManager.java:208)
at com.bonc.vbap.data.query.jdbc.spring.datasource.DriverManagerDataSource.getConnectionFromDriverManager(DriverManagerDataSource.java:116)
at com.bonc.vbap.data.query.jdbc.spring.datasource.DriverManagerDataSource.getConnectionFromDriver(DriverManagerDataSource.java:107)
at com.bonc.vbap.data.query.jdbc.spring.datasource.DriverManagerDataSource.getConnectionFromDriver(DriverManagerDataSource.java:191)
at com.bonc.vbap.data.query.jdbc.spring.datasource.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:161)
at com.bonc.vbap.data.query.jdbc.ConnectionManager.getConnection(ConnectionManager.java:63)
at com.bonc.vbap.data.schema.jdbc.JdbcSchemaContext$SchemaHelper.getConnection(JdbcSchemaContext.java:308)
at com.bonc.vbap.data.schema.jdbc.JdbcSchemaContext$SchemaHelper.<init>(JdbcSchemaContext.java:112)
at com.bonc.vbap.data.schema.jdbc.JdbcSchemaContext.getSchemaHelper(JdbcSchemaContext.java:68)
at com.bonc.vbap.data.schema.jdbc.JdbcSchemaContext.getSchemaNames(JdbcSchemaContext.java:43)
at com.bonc.vbap.data.service.impl.SchemaServiceImpl.getSchemaNames(SchemaServiceImpl.java:34)
at com.bonc.vbap.data.schema.jdbc.TestJdbcColumn.testHiveDataQuery(TestJdbcColumn.java:252)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:52)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86)
at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:252)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:94)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:191)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:678)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
Caused by: java.lang.ClassNotFoundException: org.apache.hadoop.conf.Configuration
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 47 more

这是因为要缺少一个hadoop-common包，引入即可：

<dependency>
<groupId>org.apache.hadoop</groupId>
<artifactId>hadoop-common</artifactId>
<version>2.6.5</version>
</dependency>

3. 在使用DatabaseMetaData获取元数据信息时，抛出异常：

"Method
not supported"

这是因为HiveDatabaseMetaData在实现DatabaseMetaData接口时，没有做相应方法的实现，这里我使用到的是一个getUserName接口：

...
public String getUserName() throws SQLException {
throw new SQLException("Method not supported");
}
...

可以看到在HiveDatabaseMetaData中没有对getUserName支持，所以会抛异常，getUserName方法是获取到当前HiveConnection连接的用户名(Schema名称)，但是这里不支持，那就得另外想办法，这里可以调用HiveConnection中的一个getConnParams方法得到连接参数，再调用getSchema方法获取到Schema名称。代码：

...
HiveDatabaseMetaData hiveMetaData = (HiveDatabaseMetaData) metadata;
HiveConnection hiveConn = (HiveConnection) hiveMetaData.getConnection();
String hiveSchema = hiveConn.getSchema();
...