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https://issues.apache.org/jira/browse/HADOOP-17464?focusedWorklogId=652670&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-652670
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ASF GitHub Bot logged work on HADOOP-17464:
-------------------------------------------

                Author: ASF GitHub Bot
            Created on: 19/Sep/21 02:55
            Start Date: 19/Sep/21 02:55
    Worklog Time Spent: 10m 
      Work Description: viirya commented on pull request #2611:
URL: https://github.com/apache/hadoop/pull/2611#issuecomment-922407009


   > Just to clarify: in the long term we do still plan to keep the main 
classes such as CompressionCodecFactory inside hadoop-common module? the 
hadoop-compression will just contain extra jars for codecs that are not native?
   
   Except that we plan to move all compression stuffs to `hadoop-compression`  
in the future, otherwise those basic compression related abstractions are still 
needed in `hadoop-common`. It looks weird if we have `CompressionCodecFactory` 
in `hadoop-compression`, but other classes/interfaces such as `Compressor`, 
`Decompressor` are still in `hadoop-common`.
   
   Different than the extra codecs, for these abstractions, I think the ideal 
approach is all or not when considering moving into `hadoop-compression`.
   


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Issue Time Tracking
-------------------

    Worklog Id:     (was: 652670)
    Time Spent: 5h  (was: 4h 50m)

> Create hadoop-compression module
> --------------------------------
>
>                 Key: HADOOP-17464
>                 URL: https://issues.apache.org/jira/browse/HADOOP-17464
>             Project: Hadoop Common
>          Issue Type: Improvement
>            Reporter: L. C. Hsieh
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 5h
>  Remaining Estimate: 0h
>
> We added lz4-java, snappy-java dependencies to replace native libs. As per 
> the suggestion from the review comments, we better add a hadoop module to 
> have these extra dependencies, to avoid messing up the dependencies of user 
> application.



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