[jira] [Created] (HBASE-23147) Branches-1 shaded artifact for mapreduce integration misses MainClass

["Sean Busbey (Jira)" <ji...@apache.org>]

Sean Busbey created HBASE-23147:
-----------------------------------

             Summary: Branches-1 shaded artifact for mapreduce integration misses MainClass
                 Key: HBASE-23147
                 URL: https://issues.apache.org/jira/browse/HBASE-23147
             Project: HBase
          Issue Type: Bug
          Components: Client, mapreduce
    Affects Versions: 1.5.0, 1.3.6, 1.4.11
            Reporter: Sean Busbey
             Fix For: 1.6.0, 1.5.1


the shaded artifact we intend for folks to use when doing mapreduce stuff in branches-1 is {{hbase-shaded-server}}, but it fails to define the same {{MainClass}} for the jar as the {{hbase-server}} artifact. This prevents commands like this from working:

{code}
$ hadoop  jar some/path/to/hbase-shaded-server-1.4.11-SNAPSHOT.jar importtsv -Dimporttsv.columns=HBASE_ROW_KEY,family1:column1,family1:column4,family1:column3 test:example example/ -libjars $(hbase mapredcp)

Exception in thread "main" java.lang.ClassNotFoundException: importtsv
        at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:348)
        at org.apache.hadoop.util.RunJar.run(RunJar.java:232)
        at org.apache.hadoop.util.RunJar.main(RunJar.java:153)
{code}

The {{hbase-shaded-server}} module pom should have the same maven-jar-plugin config for setting the main class as the {{hbase-server}} module.

This is not an issue in branches-2+ because as a part of moving this stuff into a {{hbase-mapreduce}} and {{hbase-shaded-mapreduce}} (HBASE-18697) we corrected this gap on the shaded artifact.

Work around by specifying the class manually
{code}
hadoop jar some/path/to/hbase-shaded-server-1.4.11-SNAPSHOT.jar org.apache.hadoop.hbase.mapreduce.Driver importtsv -Dimporttsv.columns=HBASE_ROW_KEY,family1:column1,family1:column4,family1:column3 test:example example/ -libjars $(hbase mapredcp)
{code}



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