将Parquet文件格式转换为序列文件格式

Question

我将我的配置单元表以HDFS格式存储为Parquet格式。我可以将此位置的镶木地板文件转换为序列文件格式并在其上构建配置表格吗？ 是否有任何程序可以执行此转换？

Answer 1

创建新的序列文件表，并使用插入选择重新加载数据：

insert into sequence_table 
select * from parquet_table; 

Answer 2

hive> create table src (i int) stored as parquet; 
OK 
Time taken: 0.427 seconds 
hive> create table trg stored as sequencefile as select * from src; 

---

对于@AndyReddy

create table src (i int) 
partitioned by (year int,month tinyint,day tinyint) 
stored as parquet 
; 

create table trg (i int) 
partitioned by (year int,month tinyint,day tinyint) 
stored as sequencefile 
; 

set hive.exec.dynamic.partition.mode=nonstrict 
; 

insert into trg partition(year,month,day) 
select * from src 
;