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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (KARAF-4773) Leverage smart download retries from pax-url-aether 2.5.0
Date Fri, 18 Nov 2016 18:01:06 GMT

    [ https://issues.apache.org/jira/browse/KARAF-4773?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15677291#comment-15677291
] 

ASF GitHub Bot commented on KARAF-4773:
---------------------------------------

Github user grgrzybek closed the pull request at:

    https://github.com/apache/karaf/pull/251


> Leverage smart download retries from pax-url-aether 2.5.0
> ---------------------------------------------------------
>
>                 Key: KARAF-4773
>                 URL: https://issues.apache.org/jira/browse/KARAF-4773
>             Project: Karaf
>          Issue Type: Improvement
>          Components: karaf-feature
>    Affects Versions: 4.0.7
>            Reporter: Grzegorz Grzybek
>            Assignee: Grzegorz Grzybek
>             Fix For: 4.1.0, 4.0.8
>
>
> https://ops4j1.jira.com/browse/PAXURL-337 adds _smart_ mechanism for consecutive download/resolution
attempts.
> For example, if {{org.ops4j.pax.url.mvn.repositories}} defines 10 repositories and 9
of them return HTTP 404 and 10th repository gives us "socket timeout", additional resolution
attempt doesn't have to check those 9 repositories.
> Also {{AbstractRetryableDownloadTask}} uses (by default) [9 retries|https://github.com/apache/karaf/blob/master/features/core/src/main/java/org/apache/karaf/features/internal/download/impl/AbstractRetryableDownloadTask.java#L32].
Even if this may be configured, retry task was designed for such problems as timeouts, or
temporary unavailability of e.g., {{mvn:}} protocol handler. Using 9 attempts (with exponentially
increasing delay) is not the right way to handle simple ArtifactNotFoundException...



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