[jira] [Created] (MRESOLVER-123) Concurrency issues

["Michael Osipov (Jira)" <ji...@apache.org>]

Michael Osipov created MRESOLVER-123:
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             Summary: Concurrency issues
                 Key: MRESOLVER-123
                 URL: https://issues.apache.org/jira/browse/MRESOLVER-123
             Project: Maven Resolver
          Issue Type: Bug
          Components: resolver
    Affects Versions: 1.4.2
            Reporter: Michael Osipov


This is an umbrella ticket for a long standing issue with Maven Resolver: Our concurrency support is mediocre in a way that if two or more threads try to download the same file and fail to queue those write actions nicely. The problem is that The {{SyncContext}} and the its factory provided by Maven Resolver does not employ any locking at all. As layed out in detail in MRESOLVER-114 we need striped read write locks on artifacts and its metadata. This issue shall track progress on it. Even Takari Concurrent Repository extension does not help because it is only intended to synchronize concurrent access by multple JVMs and not threads.



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