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Posted to issues@maven.apache.org by "Alexey Venderov (Jira)" <ji...@apache.org> on 2023/04/21 13:16:00 UTC

[jira] [Created] (MRESOLVER-352) Duplicate METADATA_DOWNLOADING event is being sent

Alexey Venderov created MRESOLVER-352:
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             Summary: Duplicate METADATA_DOWNLOADING event is being sent
                 Key: MRESOLVER-352
                 URL: https://issues.apache.org/jira/browse/MRESOLVER-352
             Project: Maven Resolver
          Issue Type: Bug
          Components: Resolver
    Affects Versions: 1.9.8
         Environment: Maven 3.9.2-SANPSHOT, Maven 4.0.0-SNAPSHOT, linux, windows, macos
            Reporter: Alexey Venderov


When using Maven 3.9.2-SNAPSHOT and Maven 4.0.0-SNAPSHOT we've noticed that the METADATA_DOWNLOADING event is being sent twice for the same metadata file + repository pair. And there is only one METADATA_DOWNLOADED event that corresponds to the second METADATA_DOWNLOADING event. The duplicated event might break event consumers that try to track downloads using METADATA_DOWNLOADING/METADATA_DOWNLOADED event pairs.

The regression was introduced in this PR https://github.com/apache/maven-resolver/commit/4c5e9ea98f8815c6df8bf26baa9032c8d9cd5f2d. When the lock "upgrade" is happening there is a second pass through the resolution logic that leads to the duplicate event. 



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