Alessio Soldano created CXF-6739:
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             Summary: Reduce memory pressure in 
org.apache.cxf.attachment.AttachmentDeserializer
                 Key: CXF-6739
                 URL: https://issues.apache.org/jira/browse/CXF-6739
             Project: CXF
          Issue Type: Improvement
          Components: Core
            Reporter: Alessio Soldano
            Assignee: Alessio Soldano
             Fix For: 3.0.0


Back in 2013, the api (now core) went through a major refactoring to remove 
direct dependency to javax.mail: 
https://github.com/apache/cxf/commit/6ae8f4afe219581938c0020612212faa3e770064 
Custom code for attachment deserialization was added, but unfortunately that 
seems to be writing a lot of byte[] to the memory, because of a lot of String 
instances being created for parsing the attachment inputstream into the headers 
TreeMap. The process could be optimized to avoid useless string / byte[] 
copies. It also seems that the special handling of lines starting with spaces 
there is over complicated and covering a condition that can never be true.



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