[jira] [Updated] (MNG-7144) Spurious "Read timed out" errors during Maven dependency resolution

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

     [ https://issues.apache.org/jira/browse/MNG-7144?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michael Osipov updated MNG-7144:
--------------------------------
    Fix Version/s: waiting-for-feedback

> Spurious "Read timed out" errors during Maven dependency resolution
> -------------------------------------------------------------------
>
>                 Key: MNG-7144
>                 URL: https://issues.apache.org/jira/browse/MNG-7144
>             Project: Maven
>          Issue Type: Bug
>    Affects Versions: 3.6.0
>            Reporter: Dominik Kaspar
>            Priority: Major
>             Fix For: waiting-for-feedback
>
>
> Hello
> We have hundreds of Maven builds each day, accessing a Nexus instance for dependency resolution. While this works very well, we rarely observe spurious download failures like this:
> {noformat}
> 03:23:41 Downloading: https://company/nexus/content/groups/nexus-repo/org/elasticsearch/elasticsearch/7.8.0/elasticsearch-7.8.0.jar
> [... some more successful dependency downloads and 30 minutes idle waiting ...]
> 03:53:42 [ERROR] Failed to execute goal on project SomeProj: Could not resolve dependencies for project
> somegroup:someproj:jar:1.0.0-SNAPSHOT: Could not transfer artifact org.elasticsearch:elasticsearch:jar:7.8.0
> from/to nexus-repo (https://company/nexus/content/groups/nexus-repo): GET request of:
> org/elasticsearch/elasticsearch/7.8.0/elasticsearch-7.8.0.jar from nexus-repo failed: Read timed out -> [Help 1]
> {noformat}
> Observations:
>  * The "missing" artifact always exists in the Nexus repository, sometimes it has been there for years
>  * The read timeout always lasts exactly 30 minutes, which corresponds to the default '{{maven.wagon.rto}}'
>  * Entries in the Nexus request.log suggest a successful transfer of the file, with a 200 status code and a typically short elapsedTime (the 30156 ms in this example were rather slow):
> {noformat}
> 10.0.29.133 - jenkins [20/Feb/2021:03:24:11 +0100] "GET /nexus/content/groups/nexus-repo/org/elasticsearch/elasticsearch/7.8.0/elasticsearch-7.8.0.jar
> HTTP/1.1" 200 - 2916352 30156 "Apache-Maven/3.6.0 (Java 11.0.9.1; Linux 3.10.0-1160.11.1.el7.x86_64)"
> {noformat}
>  * While in the above example, Maven 3.6.0 was used, we've observed the same problem with other versions, including 3.0.4 and 3.5.4
> While network problems cannot be ruled out, it seems odd that this happens so rarely. What other causes could there be for such read timeouts? I'm out of ideas of how to tackle this issue...
> Regards,
>  Dominik



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