Seweryn Habdank-Wojewodzki created MASSEMBLY-917:
----------------------------------------------------

             Summary: Maven Assembly plugin produces strange warnings
                 Key: MASSEMBLY-917
                 URL: https://issues.apache.org/jira/browse/MASSEMBLY-917
             Project: Maven Assembly Plugin
          Issue Type: Bug
    Affects Versions: 3.1.1
            Reporter: Seweryn Habdank-Wojewodzki


I am not sure why and what is happening, but in my maven build, which uses 
assembly plugin, I got strange warnings.
They are really unexpected to me, as I am completely not sure what assembly 
plugin is doing or trying to do behind the scene.

Why it is trying to download anything from any fixed maven repo?
Why it is even expecting my libraries are located in: sonatype, apache or 
twitter repo?
Why those and not others?
What means transfer *from/to*? Is assembly plugin trying to send some metadata 
to some repo?

I would expect assembly plugin is going to *the* repository (configured one) 
and there shall be done all libraries resolution. 
Assembly plugin shall not got on its own to any not explicitly configured 
repositories.

{code}
10:14:08 [INFO] Downloading: 
http://maven.twttr.com/com/mycompany/my/my-commons/3.2.3-SNAPSHOT/maven-metadata.xml
10:14:08 [INFO] Downloading: 
http://repository.apache.org/snapshots/com/mycompany/my/my-commons/3.2.3-SNAPSHOT/maven-metadata.xml
10:14:08 [INFO] Downloading: 
https://oss.sonatype.org/content/repositories/snapshots/com/mycompany/my/my-commons/3.2.3-SNAPSHOT/maven-metadata.xml
10:14:08 [WARNING] Could not transfer metadata 
com.mycompany.my:my-commons:3.2.3-SNAPSHOT/maven-metadata.xml from/to Twitter 
(http://maven.twttr.com/): maven.twttr.com: Name or service not known
10:14:08 [WARNING] Could not transfer metadata 
com.mycompany.my:my-commons:3.2.3-SNAPSHOT/maven-metadata.xml from/to 
apache.snapshots (http://repository.apache.org/snapshots): 
repository.apache.org: Name or service not known
10:14:08 [WARNING] Could not transfer metadata 
com.mycompany.my:my-commons:3.2.3-SNAPSHOT/maven-metadata.xml from/to 
sonatype-nexus-snapshots 
(https://oss.sonatype.org/content/repositories/snapshots): oss.sonatype.org: 
Name or service not known
10:14:08 [INFO] Downloading: 
http://repository.apache.org/snapshots/com/mycompany/my/my-parent/3.2.3-SNAPSHOT/maven-metadata.xml
10:14:08 [INFO] Downloading: 
https://oss.sonatype.org/content/repositories/snapshots/com/mycompany/my/my-parent/3.2.3-SNAPSHOT/maven-metadata.xml
10:14:08 [INFO] Downloading: 
http://maven.twttr.com/com/mycompany/my/my-parent/3.2.3-SNAPSHOT/maven-metadata.xml
10:14:08 [WARNING] Could not transfer metadata 
com.mycompany.my:my-parent:3.2.3-SNAPSHOT/maven-metadata.xml from/to Twitter 
(http://maven.twttr.com/): maven.twttr.com
10:14:08 [WARNING] Could not transfer metadata 
com.mycompany.my:my-parent:3.2.3-SNAPSHOT/maven-metadata.xml from/to 
apache.snapshots (http://repository.apache.org/snapshots): repository.apache.org
10:14:08 [WARNING] Could not transfer metadata 
com.mycompany.my:my-parent:3.2.3-SNAPSHOT/maven-metadata.xml from/to 
sonatype-nexus-snapshots 
(https://oss.sonatype.org/content/repositories/snapshots): oss.sonatype.org
10:14:08 [WARNING] Failure to transfer 
com.mycompany.my:my-commons:3.2.3-SNAPSHOT/maven-metadata.xml from 
http://maven.twttr.com/ was cached in the local repository, resolution will not 
be reattempted until the update interval of Twitter has elapsed or updates are 
forced. Original error: Could not transfer metadata 
com.mycompany.my:my-commons:3.2.3-SNAPSHOT/maven-metadata.xml from/to Twitter 
(http://maven.twttr.com/): maven.twttr.com: Name or service not known
10:14:08 [WARNING] Failure to transfer 
com.mycompany.my:my-commons:3.2.3-SNAPSHOT/maven-metadata.xml from 
http://repository.apache.org/snapshots was cached in the local repository, 
resolution will not be reattempted until the update interval of 
apache.snapshots has elapsed or updates are forced. Original error: Could not 
transfer metadata com.mycompany.my:my-commons:3.2.3-SNAPSHOT/maven-metadata.xml 
from/to apache.snapshots (http://repository.apache.org/snapshots): 
repository.apache.org: Name or service not known
10:14:08 [WARNING] Failure to transfer 
com.mycompany.my:my-commons:3.2.3-SNAPSHOT/maven-metadata.xml from 
https://oss.sonatype.org/content/repositories/snapshots was cached in the local 
repository, resolution will not be reattempted until the update interval of 
sonatype-nexus-snapshots has elapsed or updates are forced. Original error: 
Could not transfer metadata 
com.mycompany.my:my-commons:3.2.3-SNAPSHOT/maven-metadata.xml from/to 
sonatype-nexus-snapshots 
(https://oss.sonatype.org/content/repositories/snapshots): oss.sonatype.org: 
Name or service not known
10:14:08 [WARNING] Failure to transfer 
com.mycompany.my:my-parent:3.2.3-SNAPSHOT/maven-metadata.xml from 
http://maven.twttr.com/ was cached in the local repository, resolution will not 
be reattempted until the update interval of Twitter has elapsed or updates are 
forced. Original error: Could not transfer metadata 
com.mycompany.my:my-parent:3.2.3-SNAPSHOT/maven-metadata.xml from/to Twitter 
(http://maven.twttr.com/): maven.twttr.com
10:14:08 [WARNING] Failure to transfer 
com.mycompany.my:my-parent:3.2.3-SNAPSHOT/maven-metadata.xml from 
http://repository.apache.org/snapshots was cached in the local repository, 
resolution will not be reattempted until the update interval of 
apache.snapshots has elapsed or updates are forced. Original error: Could not 
transfer metadata com.mycompany.my:my-parent:3.2.3-SNAPSHOT/maven-metadata.xml 
from/to apache.snapshots (http://repository.apache.org/snapshots): 
repository.apache.org
10:14:08 [WARNING] Failure to transfer 
com.mycompany.my:my-parent:3.2.3-SNAPSHOT/maven-metadata.xml from 
https://oss.sonatype.org/content/repositories/snapshots was cached in the local 
repository, resolution will not be reattempted until the update interval of 
sonatype-nexus-snapshots has elapsed or updates are forced. Original error: 
Could not transfer metadata 
com.mycompany.my:my-parent:3.2.3-SNAPSHOT/maven-metadata.xml from/to 
sonatype-nexus-snapshots 
(https://oss.sonatype.org/content/repositories/snapshots): oss.sonatype.org
10:14:08 [INFO] Downloading: 
https://repository.apache.org/snapshots/com/mycompany/my/my-otherfunctions-commons/2019.5.3-SNAPSHOT/maven-metadata.xml
10:14:08 [INFO] Downloading: 
http://maven.twttr.com/com/mycompany/my/my-otherfunctions-commons/2019.5.3-SNAPSHOT/maven-metadata.xml
10:14:08 [INFO] Downloading: 
https://oss.sonatype.org/content/repositories/snapshots/com/mycompany/my/my-otherfunctions-commons/2019.5.3-SNAPSHOT/maven-metadata.xml
10:14:08 [WARNING] Could not transfer metadata 
com.mycompany.my:my-otherfunctions-commons:2019.5.3-SNAPSHOT/maven-metadata.xml 
from/to sonatype-nexus-snapshots 
(https://oss.sonatype.org/content/repositories/snapshots): oss.sonatype.org
10:14:08 [WARNING] Could not transfer metadata 
com.mycompany.my:my-otherfunctions-commons:2019.5.3-SNAPSHOT/maven-metadata.xml 
from/to apache.snapshots (https://repository.apache.org/snapshots): 
repository.apache.org
10:14:08 [WARNING] Could not transfer metadata 
com.mycompany.my:my-otherfunctions-commons:2019.5.3-SNAPSHOT/maven-metadata.xml 
from/to Twitter (http://maven.twttr.com/): maven.twttr.com
10:14:08 [INFO] Downloading: 
https://oss.sonatype.org/content/repositories/snapshots/com/mycompany/my/my-otherfunctions-parent/2019.5.3-SNAPSHOT/maven-metadata.xml
10:14:08 [INFO] Downloading: 
http://maven.twttr.com/com/mycompany/my/my-otherfunctions-parent/2019.5.3-SNAPSHOT/maven-metadata.xml
10:14:08 [INFO] Downloading: 
https://repository.apache.org/snapshots/com/mycompany/my/my-otherfunctions-parent/2019.5.3-SNAPSHOT/maven-metadata.xml
10:14:08 [WARNING] Could not transfer metadata 
com.mycompany.my:my-otherfunctions-parent:2019.5.3-SNAPSHOT/maven-metadata.xml 
from/to sonatype-nexus-snapshots 
(https://oss.sonatype.org/content/repositories/snapshots): oss.sonatype.org
10:14:08 [WARNING] Could not transfer metadata 
com.mycompany.my:my-otherfunctions-parent:2019.5.3-SNAPSHOT/maven-metadata.xml 
from/to apache.snapshots (https://repository.apache.org/snapshots): 
repository.apache.org
10:14:08 [WARNING] Could not transfer metadata 
com.mycompany.my:my-otherfunctions-parent:2019.5.3-SNAPSHOT/maven-metadata.xml 
from/to Twitter (http://maven.twttr.com/): maven.twttr.com
10:14:08 [WARNING] Failure to transfer 
com.mycompany.my:my-parent:3.2.3-SNAPSHOT/maven-metadata.xml from 
https://oss.sonatype.org/content/repositories/snapshots was cached in the local 
repository, resolution will not be reattempted until the update interval of 
sonatype-nexus-snapshots has elapsed or updates are forced. Original error: 
Could not transfer metadata 
com.mycompany.my:my-parent:3.2.3-SNAPSHOT/maven-metadata.xml from/to 
sonatype-nexus-snapshots 
(https://oss.sonatype.org/content/repositories/snapshots): oss.sonatype.org
10:14:08 [WARNING] Failure to transfer 
com.mycompany.my:my-parent:3.2.3-SNAPSHOT/maven-metadata.xml from 
http://maven.twttr.com/ was cached in the local repository, resolution will not 
be reattempted until the update interval of Twitter has elapsed or updates are 
forced. Original error: Could not transfer metadata 
com.mycompany.my:my-parent:3.2.3-SNAPSHOT/maven-metadata.xml from/to Twitter 
(http://maven.twttr.com/): maven.twttr.com
10:14:08 [INFO] Downloading: 
https://repository.apache.org/snapshots/com/mycompany/my/my-parent/3.2.3-SNAPSHOT/maven-metadata.xml
10:14:08 [WARNING] Could not transfer metadata 
com.mycompany.my:my-parent:3.2.3-SNAPSHOT/maven-metadata.xml from/to 
apache.snapshots (https://repository.apache.org/snapshots): 
repository.apache.org
10:14:08 [WARNING] Failure to transfer 
com.mycompany.my:my-otherfunctions-parent:2019.5.3-SNAPSHOT/maven-metadata.xml 
from https://oss.sonatype.org/content/repositories/snapshots was cached in the 
local repository, resolution will not be reattempted until the update interval 
of sonatype-nexus-snapshots has elapsed or updates are forced. Original error: 
Could not transfer metadata 
com.mycompany.my:my-otherfunctions-parent:2019.5.3-SNAPSHOT/maven-metadata.xml 
from/to sonatype-nexus-snapshots 
(https://oss.sonatype.org/content/repositories/snapshots): oss.sonatype.org
10:14:08 [WARNING] Failure to transfer 
com.mycompany.my:my-otherfunctions-parent:2019.5.3-SNAPSHOT/maven-metadata.xml 
from https://repository.apache.org/snapshots was cached in the local 
repository, resolution will not be reattempted until the update interval of 
apache.snapshots has elapsed or updates are forced. Original error: Could not 
transfer metadata 
com.mycompany.my:my-otherfunctions-parent:2019.5.3-SNAPSHOT/maven-metadata.xml 
from/to apache.snapshots (https://repository.apache.org/snapshots): 
repository.apache.org
10:14:08 [WARNING] Failure to transfer 
com.mycompany.my:my-otherfunctions-parent:2019.5.3-SNAPSHOT/maven-metadata.xml 
from http://maven.twttr.com/ was cached in the local repository, resolution 
will not be reattempted until the update interval of Twitter has elapsed or 
updates are forced. Original error: Could not transfer metadata 
com.mycompany.my:my-otherfunctions-parent:2019.5.3-SNAPSHOT/maven-metadata.xml 
from/to Twitter (http://maven.twttr.com/): maven.twttr.com
10:14:08 [WARNING] Failure to transfer 
com.mycompany.my:my-parent:3.2.3-SNAPSHOT/maven-metadata.xml from 
https://oss.sonatype.org/content/repositories/snapshots was cached in the local 
repository, resolution will not be reattempted until the update interval of 
sonatype-nexus-snapshots has elapsed or updates are forced. Original error: 
Could not transfer metadata 
com.mycompany.my:my-parent:3.2.3-SNAPSHOT/maven-metadata.xml from/to 
sonatype-nexus-snapshots 
(https://oss.sonatype.org/content/repositories/snapshots): oss.sonatype.org
10:14:08 [WARNING] Failure to transfer 
com.mycompany.my:my-parent:3.2.3-SNAPSHOT/maven-metadata.xml from 
https://repository.apache.org/snapshots was cached in the local repository, 
resolution will not be reattempted until the update interval of 
apache.snapshots has elapsed or updates are forced. Original error: Could not 
transfer metadata com.mycompany.my:my-parent:3.2.3-SNAPSHOT/maven-metadata.xml 
from/to apache.snapshots (https://repository.apache.org/snapshots): 
repository.apache.org
10:14:08 [WARNING] Failure to transfer 
com.mycompany.my:my-parent:3.2.3-SNAPSHOT/maven-metadata.xml from 
http://maven.twttr.com/ was cached in the local repository, resolution will not 
be reattempted until the update interval of Twitter has elapsed or updates are 
forced. Original error: Could not transfer metadata 
com.mycompany.my:my-parent:3.2.3-SNAPSHOT/maven-metadata.xml from/to Twitter 
(http://maven.twttr.com/): maven.twttr.com
10:14:09 [WARNING] Failure to transfer 
com.mycompany.my:my-otherfunctions-parent:2019.5.3-SNAPSHOT/maven-metadata.xml 
from https://oss.sonatype.org/content/repositories/snapshots was cached in the 
local repository, resolution will not be reattempted until the update interval 
of sonatype-nexus-snapshots has elapsed or updates are forced. Original error: 
Could not transfer metadata 
com.mycompany.my:my-otherfunctions-parent:2019.5.3-SNAPSHOT/maven-metadata.xml 
from/to sonatype-nexus-snapshots 
(https://oss.sonatype.org/content/repositories/snapshots): oss.sonatype.org
10:14:09 [WARNING] Failure to transfer 
com.mycompany.my:my-otherfunctions-parent:2019.5.3-SNAPSHOT/maven-metadata.xml 
from https://repository.apache.org/snapshots was cached in the local 
repository, resolution will not be reattempted until the update interval of 
apache.snapshots has elapsed or updates are forced. Original error: Could not 
transfer metadata 
com.mycompany.my:my-otherfunctions-parent:2019.5.3-SNAPSHOT/maven-metadata.xml 
from/to apache.snapshots (https://repository.apache.org/snapshots): 
repository.apache.org
10:14:09 [WARNING] Failure to transfer 
com.mycompany.my:my-otherfunctions-parent:2019.5.3-SNAPSHOT/maven-metadata.xml 
from http://maven.twttr.com/ was cached in the local repository, resolution 
will not be reattempted until the update interval of Twitter has elapsed or 
updates are forced. Original error: Could not transfer metadata 
com.mycompany.my:my-otherfunctions-parent:2019.5.3-SNAPSHOT/maven-metadata.xml 
from/to Twitter (http://maven.twttr.com/): maven.twttr.com
10:14:09 [INFO] Downloading: 
http://nexus.codehaus.org/snapshots/com/mycompany/my/my-otherfunctions-parent/2019.5.3-SNAPSHOT/maven-metadata.xml
10:14:09 [WARNING] Could not transfer metadata 
com.mycompany.my:my-otherfunctions-parent:2019.5.3-SNAPSHOT/maven-metadata.xml 
from/to codehaus-snapshots (http://nexus.codehaus.org/snapshots/): 
nexus.codehaus.org: Name or service not known
10:14:09 [WARNING] Failure to transfer 
com.mycompany.my:my-parent:3.2.3-SNAPSHOT/maven-metadata.xml from 
https://oss.sonatype.org/content/repositories/snapshots was cached in the local 
repository, resolution will not be reattempted until the update interval of 
sonatype-nexus-snapshots has elapsed or updates are forced. Original error: 
Could not transfer metadata 
com.mycompany.my:my-parent:3.2.3-SNAPSHOT/maven-metadata.xml from/to 
sonatype-nexus-snapshots 
(https://oss.sonatype.org/content/repositories/snapshots): oss.sonatype.org
10:14:09 [WARNING] Failure to transfer 
com.mycompany.my:my-parent:3.2.3-SNAPSHOT/maven-metadata.xml from 
https://repository.apache.org/snapshots was cached in the local repository, 
resolution will not be reattempted until the update interval of 
apache.snapshots has elapsed or updates are forced. Original error: Could not 
transfer metadata com.mycompany.my:my-parent:3.2.3-SNAPSHOT/maven-metadata.xml 
from/to apache.snapshots (https://repository.apache.org/snapshots): 
repository.apache.org
10:14:09 [WARNING] Failure to transfer 
com.mycompany.my:my-parent:3.2.3-SNAPSHOT/maven-metadata.xml from 
http://maven.twttr.com/ was cached in the local repository, resolution will not 
be reattempted until the update interval of Twitter has elapsed or updates are 
forced. Original error: Could not transfer metadata 
com.mycompany.my:my-parent:3.2.3-SNAPSHOT/maven-metadata.xml from/to Twitter 
(http://maven.twttr.com/): maven.twttr.com
10:14:09 [INFO] Downloading: 
http://nexus.codehaus.org/snapshots/com/mycompany/my/my-parent/3.2.3-SNAPSHOT/maven-metadata.xml
10:14:09 [WARNING] Could not transfer metadata 
com.mycompany.my:my-parent:3.2.3-SNAPSHOT/maven-metadata.xml from/to 
codehaus-snapshots (http://nexus.codehaus.org/snapshots/): nexus.codehaus.org
{code}



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