[jira] [Created] (MSOURCES-119) Archiving to jar is very slow

["Claes Nordmark (JIRA)" <ji...@apache.org>]

Claes Nordmark created MSOURCES-119:
---------------------------------------

             Summary: Archiving to jar is very slow
                 Key: MSOURCES-119
                 URL: https://issues.apache.org/jira/browse/MSOURCES-119
             Project: Maven Source Plugin
          Issue Type: Bug
    Affects Versions: 3.0.0
         Environment: RedHat 7
            Reporter: Claes Nordmark


Doing a stackdump while "maven-source-plugin:3.0.0:jar-no-fork (attach-sources)" shows thread spending a lot of time in UnixNativeDispatcher.getgrgid.

This was not visible in java 8 and source plugin version 2.4.

Our previous build time has been increased from 5min to 3h 30min.

Tested version Java 11 and 3.0.0 of maven-source-plugin

maven config:
{code:java}
 <plugin>
 <groupId>org.apache.maven.plugins</groupId>
 <artifactId>maven-source-plugin</artifactId>
 <version>3.0.0</version>
 <executions>
   <execution>
     <id>attach-sources</id>
     <goals>
       <goal>jar-no-fork</goal>
     </goals>
   </execution>
 </executions>
 </plugin>{code}
{{java.lang.Thread.State: RUNNABLE}}
{{ at sun.nio.fs.UnixNativeDispatcher.getgrgid(java.base@11/Native Method)}}
{{ at sun.nio.fs.UnixUserPrincipals.fromGid(java.base@11/UnixUserPrincipals.java:129)}}
{{ at sun.nio.fs.UnixFileAttributes.group(java.base@11/UnixFileAttributes.java:208)}}
{{ - locked <0x00000006b0773fd8> (a sun.nio.fs.UnixFileAttributes)}}
{{ at sun.nio.fs.UnixFileAttributeViews$Posix.addRequestedPosixAttributes(java.base@11/UnixFileAttributeViews.java:214)}}
{{ at sun.nio.fs.UnixFileAttributeViews$Unix.readAttributes(java.base@11/UnixFileAttributeViews.java:362)}}
{{ at sun.nio.fs.AbstractFileSystemProvider.readAttributes(java.base@11/AbstractFileSystemProvider.java:94)}}
{{ at java.nio.file.Files.readAttributes(java.base@11/Files.java:1996)}}
{{ at org.codehaus.plexus.components.io.attributes.Java7FileAttributes.<init>(Java7FileAttributes.java:65)}}
{{ at org.codehaus.plexus.components.io.resources.PlexusIoFileResourceCollection.addResourcesJava7(PlexusIoFileResourceCollection.java:192)}}
{{ at org.codehaus.plexus.components.io.resources.PlexusIoFileResourceCollection.getResources(PlexusIoFileResourceCollection.java:287)}}
{{ at org.codehaus.plexus.archiver.AbstractArchiver$1.hasNext(AbstractArchiver.java:504)}}
{{ at org.apache.maven.plugins.source.AbstractSourceJarMojo.packageSources(AbstractSourceJarMojo.java:287)}}



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