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From "David Medinets (JIRA)" <j...@apache.org>
Subject [jira] [Created] (ACCUMULO-2911) setscaniter and setshelliter unable to load class.
Date Sun, 15 Jun 2014 15:33:01 GMT
David Medinets created ACCUMULO-2911:
----------------------------------------

             Summary: setscaniter and setshelliter unable to load class.
                 Key: ACCUMULO-2911
                 URL: https://issues.apache.org/jira/browse/ACCUMULO-2911
             Project: Accumulo
          Issue Type: Bug
    Affects Versions: 1.5.0
            Reporter: David Medinets
            Priority: Trivial


Problem:

I can use a custom iterator using the setiter command but the same iterator does not work
using the setscaniter or setshelliter commands.

References:
  https://blogs.apache.org/accumulo/entry/the_accumulo_classloader
  http://accumulo.apache.org/1.5/examples/classpath.html

Description:

I am using my https://github.com/medined/D4M_Schema project to start Accumulo. So the environment
that I am using can be duplicated exactly if needed. I am using

Accumulo: 1.5.0
Hadoop: 1.2.1

The classpath settings in accumulo-site.xml are the following (which I think are the default):

    <property>
      <name>general.classpaths</name>
      <value>
    $ACCUMULO_HOME/server/target/classes/,
    $ACCUMULO_HOME/core/target/classes/,
    $ACCUMULO_HOME/start/target/classes/,
    $ACCUMULO_HOME/examples/target/classes/,
        $ACCUMULO_HOME/lib/[^.].$ACCUMULO_VERSION.jar,
        $ACCUMULO_HOME/lib/[^.].*.jar,
        $ZOOKEEPER_HOME/zookeeper[^.].*.jar,
        $HADOOP_HOME/conf,
        $HADOOP_HOME/[^.].*.jar,
        $HADOOP_HOME/lib/[^.].*.jar,
      </value>
      <description>Classpaths that accumulo checks for updates and class files.
      When using the Security Manager, please remove the ".../target/classes/" values.
      </description>
    </property>

I can load my iterator using setiter but not with setscaniter or setshelliter.

Here is my do-nothing iterator:

public class MyIterator extends WrappingIterator implements OptionDescriber {

    @Override
    public IteratorOptions describeOptions() {
        String name = "dummy";
        String description = "Dummy Description";
        Map<String, String> namedOptions = new HashMap<String, String>();
        List<String> unnamedOptionDescriptions = null;
        return new IteratorOptions(name, description, namedOptions, unnamedOptionDescriptions);
    }

    @Override
    public boolean validateOptions(Map<String, String> options) {
        return true;
    }
    
}

I copy the jar file out to HDFS:

hadoop fs -mkdir /user/vagrant/d4m/classpath
hadoop fs -put /vagrant/schema/target/d4m_schema-0.0.1-SNAPSHOT.jar /user/vagrant/classpath

I set the table-specific classpath context:

createtable atest
table atest
insert row cf cq value
config -s general.vfs.context.classpath.d4m=hdfs://affy-master:9000/user/vagrant/classpath
config -t atest -s table.classpath.context=d4m

Now I can configure the iterator and scan over the single row without a problem:

setiter -n MyIterator -p 10 -scan -minc -majc -class com.codebits.d4m.iterator.MyIterator
scan
deleteiter -n MyIterator -scan -minc -majc 

However, the setscaniter commands fails:

root@instance atest> setscaniter -n MyIterator -p 10 -class com.codebits.d4m.iterator.MyIterator
2014-06-15 02:54:14,098 [shell.Shell] WARN : Deprecated, use setshelliter
Dummy Description
2014-06-15 02:54:14,126 [shell.Shell] ERROR: org.apache.accumulo.core.util.shell.ShellCommandException:
Command could not be initialized (Unable to load com.codebits.d4m.iterator.MyIterator)

As does the setshelliter:

root@instance atest> setshelliter -pn d4m -n MyIterator -p 10 -class com.codebits.d4m.iterator.MyIterator
Dummy Description
2014-06-15 02:55:07,025 [shell.Shell] ERROR: org.apache.accumulo.core.util.shell.ShellCommandException:
Command could not be initialized (Unable to load com.codebits.d4m.iterator.MyIterator)

I don't see any messages in the log files. 



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