milleruntime commented on pull request #140:
URL: https://github.com/apache/accumulo/pull/140#issuecomment-1018552764


   After some research into recent Hadoop improvements and since production 
hasn't encountered memory issues with compressors recently, I think this can be 
closed. Hadoop has made changes in version 2.9.0 to `CodecPool` that 
essentially does no pooling, one improvement this PR was making. Here is the 
code from `CodecPool` that checks for the `DoNotPool` annotation:
   
https://github.com/apache/hadoop/blob/rel/release-2.9.0/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/compress/CodecPool.java#L160-L165


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