Question

请任何人帮我用hive 0.14创建hive事务表。另外，举例说明如何在创建的配置单表

的记录中执行更新和删除操作

Answer 1

Need to add additional settings in hive-site.xml and

使用ACID输出格式支持创建表。

New Configuration Parameters for Transactions
 hive.support.concurrency – true
 hive.enforce.bucketing – true
 hive.exec.dynamic.partition.mode – nonstrict
 hive.txn.manager –org.apache.hadoop.hive.ql.lockmgr.DbTxnManager
 hive.compactor.initiator.on – true
 hive.compactor.worker.threads – 1


You can also set the parameters by running above lines on hive terminal for temp.,
then run below queries to perform create, insert, update, delete, select operations on table.

**1.Create HiveTest table with ACID support**

create table HiveTest 
   (EmployeeID Int,FirstName String,Designation String,
     Salary Int,Department String) 
   clustered by (department) into 3 buckets 
   stored as orc TBLPROPERTIES ('transactional'='true');

**2. INSERT**

insert into table HiveTest 
     values(1,'Rohit','MD',88000,'Development');

insert into table HiveTest 
     values(2,'anil','CEO',99999,'IT');

**3. SELECT**

SELECT * FROM hivetest;

**4.UPDATE**

 update HiveTest 
    set salary = 111111 
    where employeeid = 2;

**5. DELETE**

 delete from HiveTest
     where employeeid=1;

**6. SELECT**`enter code here`

SELECT * FROM hivetest;

'Insert into ..' statement cannot be used for complex datatypes.
 Hive does not support literals for complex types, so it is not possible to use them in INSERT...VALUES clauses.

Thanks

使用hive 0.14建议使用示例创建，更新和删除示例配置单元件查询

1 个答案: