將Parquet文件格式轉換爲序列文件格式

Question

我將我的配置單元表以HDFS格式存儲爲Parquet格式。我可以將此位置的鑲木地板文件轉換爲序列文件格式並在其上構建配置表格嗎？ 是否有任何程序可以執行此轉換？

Answer 1

創建新的序列文件表，並使用插入選擇重新加載數據：

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; 

---

對於@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 
;