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From "Rainer Reich (Jira)" <>
Subject [jira] [Updated] (MRESOLVER-123) Concurrency issues
Date Tue, 30 Jun 2020 11:26:00 GMT


Rainer Reich updated MRESOLVER-123:
    Attachment:     (was: checksum-error-debug.log)

> Concurrency issues
> ------------------
>                 Key: MRESOLVER-123
>                 URL:
>             Project: Maven Resolver
>          Issue Type: Bug
>          Components: resolver
>    Affects Versions: 1.4.2
>            Reporter: Michael Osipov
>            Priority: Critical
>         Attachments: checksum-error-debug.log
> 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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