I believe this is one reason why projects sometimes wrap Maven in downloader scripts-- to ensure that they get the right version of Maven, and avoid having to think about the quirks of any other version. For example, OpenZipkin has this: https://github.com/openzipkin/zipkin/blob/master/mvnw
As much as I hate to add any more complexity to the build system, if new contributors keep stumbling on problems like HTRACE-234, we might have to. I really wish someone would figure out a fix for HTRACE-234. Unfortunately, it's pretty darn difficult... On Wed, Sep 14, 2016, at 13:40, Mike Drob wrote: > Thanks, Colin. Switching to maven 3.0.4 solved it for me. > > On Wed, Sep 14, 2016 at 3:02 PM, Colin McCabe <cmcc...@apache.org> wrote: > > > Hi Mike, > > > > I believe this is HTRACE-234. > > > > https://issues.apache.org/jira/browse/HTRACE-234 > > > > The workaround is to use Maven 3.0.4 rather than a later version. :( > > > > Unfortunately, this appears to result from a bug in the maven-shade > > plugin. I wish we had a better workaround, but right now we don't... > > > > best, > > Colin > > > > > > On Wed, Sep 14, 2016, at 12:59, Mike Drob wrote: > > > Hey folks, > > > > > > I've run into an issue where when I am building htrace the process gets > > > stuck creating a dep-reduced pom for htrace-hbase module over and over > > > again. I'm not sure which plugin is even asking for this pom file, or > > > what > > > it gets used for/how it is generated. If anybody has seen anything like > > > this, or has any advice, I'd be very appreciative. > > > > > > I can reproduce it consistently with > > > mvn clean package -pl htrace-hbase -am -DskipTests > > > > > > My default maven/java details are here. Switching to java 7 did not > > > change > > > things. > > > > > > Apache Maven 3.3.9 (bb52d8502b132ec0a5a3f4c09453c07478323dc5; > > > 2015-11-10T10:41:47-06:00) > > > Maven home: /opt/apache-maven-3.3.9 > > > Java version: 1.8.0_101, vendor: Oracle Corporation > > > Java home: /usr/lib/jvm/java-8-oracle/jre > > > Default locale: en_US, platform encoding: UTF-8 > > > OS name: "linux", version: "3.13.0-95-generic", arch: "amd64", family: > > > "unix" > > > > > > When running with debug logging turned on, I see the following set of > > > lines > > > printed: > > > > > > [DEBUG] Extension realms for project > > > org.apache.htrace:htrace-hbase:jar:4.2.0-incubating-SNAPSHOT: (none) > > > [DEBUG] Looking up lifecyle mappings for packaging jar from > > > ClassRealm[plexus.core, parent: null] > > > [DEBUG] Extension realms for project > > > org.apache.htrace:htrace:pom:4.2.0-incubating-SNAPSHOT: (none) > > > [DEBUG] Looking up lifecyle mappings for packaging pom from > > > ClassRealm[plexus.core, parent: null] > > > [DEBUG] Extension realms for project org.apache:apache:pom:17: (none) > > > [DEBUG] Looking up lifecyle mappings for packaging pom from > > > ClassRealm[plexus.core, parent: null] > > > [DEBUG] building maven31 dependency graph for > > > org.apache.htrace:htrace-hbase:jar:4.2.0-incubating-SNAPSHOT > > > [DEBUG] Dependency collection stats: {ConflictMarker.analyzeTime=0, > > > ConflictMarker.markTime=0, ConflictMarker.nodeCount=48, > > > ConflictIdSorter.graphTime=0, ConflictIdSorter.topsortTime=0, > > > ConflictIdSorter.conflictIdCount=28, > > > ConflictIdSorter.conflictIdCycleCount=0, ConflictResolver.totalTime=0, > > > ConflictResolver.conflictItemCount=21, > > > DefaultDependencyCollector.collectTime=1, > > > DefaultDependencyCollector.transformTime=0} > > > [DEBUG] org.apache.htrace:htrace-hbase:jar:4.2.0-incubating-SNAPSHOT > > > [DEBUG] > > > org.apache.htrace:htrace-core4:jar:4.2.0-incubating-SNAPSHOT:provided > > > [DEBUG] commons-logging:commons-logging:jar:1.1.1:provided > > > [DEBUG] > > > org.apache.htrace:htrace-core4:jar:tests:4.2.0-incubating-SNAPSHOT:test > > > [DEBUG] com.fasterxml.jackson.core:jackson-core:jar:2.4.0:test > > > [DEBUG] com.fasterxml.jackson.core:jackson-databind:jar:2.4.0:test > > > [DEBUG] > > > com.fasterxml.jackson.core:jackson-annotations:jar:2.4.0:test > > > [DEBUG] junit:junit:jar:4.11:test > > > [DEBUG] org.apache.hbase:hbase-common:jar:1.1.2:provided > > > [DEBUG] com.google.protobuf:protobuf-java:jar:2.5.0:provided > > > [DEBUG] org.apache.hbase:hbase-client:jar:1.1.2:provided > > > [DEBUG] org.apache.hbase:hbase-testing-util:jar:1.1.2:test > > > [INFO] Dependency-reduced POM written at: > > > /home/mdrob/workspace/htrace/htrace-hbase/dependency-reduced-pom.xml > > > > > > > > > Thanks, > > > Mike > >
