Question

场景

我正在尝试通过zookeepers集群将本地笔记本电脑中的Hive表连接到远程开发服务器，并尝试更新表列值。 Hadoop集群和Hive表也位于开发环境的远程位置。我正在使用hive-jdbc.jar版本2.1.0和hadoop通用版本2.7.1

问题

面对的问题是表记录已更新，但stmt.getUpdateCount（）和stmt.executeUpdate分别返回-1和0。码：有什么遗漏吗？或在蜂巢表getUpdateCount（）表现不同？感谢任何快速帮助。

代码：

private static String driverName = "org.apache.hive.jdbc.HiveDriver"; 
public static void main(String[] args) throws SQLException, 
ClassNotFoundException {   
Class.forName(driverName);
Connection con = 
DriverManager.getConnection("jdbc:hive2://XXXX:XXXX/tibco,
XXXX:XXXX/tibco,XXXX:XXXX/tibco;
serviceDiscoveryMode=zooKeeper;zooKeeperNamespace=hiveserver2;
"hive.execution.engine=tez", "hive", "");
Statement stmt = con.createStatement();
con.setAutoCommit(true);
System.out.println("created");
ResultSet rs = stmt.executeQuery("select * from tibco.log_events_poc");
ResultSet db1=stmt.executeQuery("desc tibco.log_events_poc");
System.out.println("tibco.log_events_poc table -->"+db1);
int rowsupdated = stmt.executeUpdate("update tibco.log_events_poc set 
name='sample1'");            
System.out.println("Number of Rows updated"+stmt.getUpdateCount());
System.out.println("Number of Rows updated"+rowsupdated);
stmt.close();           
con.close();
  }

Answer 1

You can check out the sources of version 2.1.0。驱动程序完全忽略任何更新计数，并始终返回'Find out number of sheets in Master Set MasterWB = ActiveWorkbook MScnt = MasterWB.Sheets.Count 'Switch to folder containing data workbooks 'Use path from master for now ChDir ("\\C:Test") 'Find al xlsx workbooks in folder File = Dir("*.xlsx") While File <> "" Debug.Print "Processing file " & File 'Do not process yourself If InStr(File, MasterWB.Name) = 0 Then 'Open data workbook Set DataWB = Workbooks.Open(File, xlUpdateLinksNever, True) DataWB.Activate 'Catch missing input sheet On Error Resume Next Snr = 0 Snr = Sheets("2. Hours Reconciliation").Index On Error GoTo 0 If Snr > 0 Then Sheets(Snr).Copy After:=MasterWB.Sheets(1) MasterWB.Activate 'Rename added sheet; use data wb name for now End If MasterWB.Activate DataWB.Close False End If 'Next file File = Dir() Wend：

相关功能请求在这里：https://issues.apache.org/jira/browse/HIVE-12382

Java Hive连接executeUpdate（）始终返回计数为零

场景

问题

1 个答案: