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                            :-: ![](https://img.kancloud.cn/94/b3/94b3dcb41a0a173c4dc9c44ba9b0b0e4_1150x538.png)
文件存儲格式比較

**存儲格式選擇：**
寫：一般寫入時間并不是最重要
讀：
1、Avro——查詢隨時間變化的數據集
2、Parquet ——適合在寬表上查詢少數列
3、Parquet & ORC以犧牲寫性能為代價優化讀取性能
4、TextFile讀起來很慢
<br/>

**Hive 查詢（快->慢）：**
```

ORC -> Parquet -> Text -> Avro -> SequenceFile
```
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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