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Subject [GitHub] [hadoop] sunchao commented on pull request #2611: HADOOP-17464. Create hadoop-compression module
Date Fri, 02 Apr 2021 21:53:04 GMT

sunchao commented on pull request #2611:
URL: https://github.com/apache/hadoop/pull/2611#issuecomment-812730610


   > I think so. Previously people may include hadoop-common and expect snappy/lz4 codec
there. Where should we notify the people? release-note?
   
   Perhaps we should create a page for compression codecs, under "Tools" category of https://hadoop.apache.org/docs/current/index.html.
This can be done separately though after this is merged. We also need release notes I assume.
   
   > You mean to let codec loader to report what codecs there are?
   
   I think maybe some informative error message that users should have `hadoop-compression`
jar in their classpath or project dependencies, when the class loader fail to find the codec
class.
   
   @steveloughran do you still think this is a worthwhile thing to do? and I assume this targets
Hadoop 3.4.x, not 3.3.x, is that correct?
   


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