[HDDS-2370] Support Ozone HddsDatanodeService run as plugin with HDFS Datanode

• Type: Task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.5.0
• Component/s: documentation
• Labels: pull-request-available
• Target Version/s: 0.5.0
• Assignee: luhuachao
• Reporter: luhuachao
• Created: 28/Oct/19 02:49
• Updated: 24/Feb/20 20:52
• Resolved: 07/Nov/19 09:22

Description

In RunningWithHDFS.md 

export HADOOP_CLASSPATH=/opt/ozone/share/hadoop/ozoneplugin/hadoop-ozone-datanode-plugin.jar

ozone-hdfs/docker-compose.yaml

 

      environment:
         HADOOP_CLASSPATH: /opt/ozone/share/hadoop/ozoneplugin/*.jar

when i run hddsdatanodeservice as pulgin in hdfs datanode, it comes out with the error below , there is no constructor without parameter.

 

 

2019-10-21 21:38:56,391 ERROR datanode.DataNode (DataNode.java:startPlugins(972)) - Unable to load DataNode plugins. Specified list of plugins: org.apache.hadoop.ozone.HddsDatanodeService
java.lang.RuntimeException: java.lang.NoSuchMethodException: org.apache.hadoop.ozone.HddsDatanodeService.<init>()

what i doubt is that, ozone-0.5 not support running as a plugin in hdfs datanode now ? if so, 

why donnot  we remove doc RunningWithHDFS.md ? 

Issue Links

• links to: GitHub Pull Request #105

Sub-Tasks

• Add robot test file for ozone-hdfs: Open