Yes. Hadoop does do some strange and surprising things with jars when executing them.
On Sun, Aug 5, 2012 at 2:25 AM, Alex Ott <[email protected]> wrote: > At least Hadoop is able to find jars inside jar, if they're placed > inside lib directory in the jar - I use this for packing my code (via > assembly plugin), with following assembly description: > > <assembly > xmlns=" > http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.0"; > xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; > xsi:schemaLocation=" > http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.0 > http://maven.apache.org/xsd/assembly-1.1.0.xsd";> > <id>job</id> > <formats> > <format>jar</format> > </formats> > <includeBaseDirectory>false</includeBaseDirectory> > <dependencySets> > <dependencySet> > <unpack>false</unpack> > <scope>runtime</scope> > <outputDirectory>lib</outputDirectory> > <excludes> > <exclude>${artifact.groupId}:${artifact.artifactId}</exclude> > <exclude>org.apache.hadoop:hadoop-core</exclude> > </excludes> > </dependencySet> > <dependencySet> > <unpack>true</unpack> > <includes> > <include>${artifact.groupId}:${artifact.artifactId}</include> > </includes> > </dependencySet> > </dependencySets> > </assembly> > > > On Sun, Aug 5, 2012 at 1:10 AM, Ted Dunning <[email protected]> wrote: > > I didn't think that Java supports jars inside jars. > > > > On Sat, Aug 4, 2012 at 5:04 PM, Lance Norskog <[email protected]> wrote: > > > >> The Maven build does a grand project unpacking multiple jars into one > >> big one. Java apparently supports packing jars inside other jars- the > >> outer jar needs a classpath property for the inside jars. When someone > >> rearranged the Maven build, did they try this out? Is there a Maven > >> task for jar-of-jars? > >> > >> -- > >> Lance Norskog > >> [email protected] > >> > > > > -- > With best wishes, Alex Ott > http://alexott.net/ > Twitter: alexott_en (English), alexott (Russian) > Skype: alex.ott >
