[jira] [Updated] (PARQUET-1872) Add TransCompression command

["Xinli Shang (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/PARQUET-1872?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Xinli Shang updated PARQUET-1872:
---------------------------------
    Description: 
When ZSTD becomes more popular, there is a need to translate existing data to ZSTD compressed which can achieve a higher compression ratio. It would be useful if we can have a tool to convert a Parquet file directly by just decompressing/compressing each page without decoding/encoding or assembling the record because it is much faster. The initial result shows it is ~5 times faster. 



  was:
When ZSTD becomes more popular, there is a need to translate existing data ZSTD compressed which can achieve a higher compression ratio. It would be useful if we can have a tool to convert a Parquet file directly by just decompressing/compressing each page without decoding/encoding or assembling the record because it is much faster. The initial result shows it is ~5 times faster. 




> Add TransCompression command 
> -----------------------------
>
>                 Key: PARQUET-1872
>                 URL: https://issues.apache.org/jira/browse/PARQUET-1872
>             Project: Parquet
>          Issue Type: Improvement
>          Components: parquet-mr
>    Affects Versions: 1.12.0
>            Reporter: Xinli Shang
>            Assignee: Xinli Shang
>            Priority: Major
>
> When ZSTD becomes more popular, there is a need to translate existing data to ZSTD compressed which can achieve a higher compression ratio. It would be useful if we can have a tool to convert a Parquet file directly by just decompressing/compressing each page without decoding/encoding or assembling the record because it is much faster. The initial result shows it is ~5 times faster. 



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