[jira] [Created] (MNG-8007) Make Maven transfer listener used with Resolver more concurrent friendly

["Tamas Cservenak (Jira)" <ji...@apache.org>]

Tamas Cservenak created MNG-8007:
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             Summary: Make Maven transfer listener used with Resolver more concurrent friendly
                 Key: MNG-8007
                 URL: https://issues.apache.org/jira/browse/MNG-8007
             Project: Maven
          Issue Type: Improvement
          Components: Artifacts and Repositories
            Reporter: Tamas Cservenak
             Fix For: 4.0.0, 4.0.0-alpha-11


Current console transfer listener used in Maven has all method {{synchronized}}. This becomes a problem as resolver is more and more parallelized, and threads from it sending events are getting in race condition for maven listener monitor.

One possibility would be to implement a "demuxer" listener, that wraps another listener: it receives even from multiple threads events, returns fast, but passes the incoming events on single thread to wrapped listener. This makes resolver relieve a bit, but also keeps actual listener simple, as it can be coded single threaded.



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