[AMBARI-20156] HadoopTimelineMetricsSink breaks after Hadoop 3 alpha2

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: metrics
• Assignee: Unassigned
• Reporter: Wei-Chiu Chuang
• Created: 23/Feb/17 22:35
• Updated: 23/Feb/17 22:42

Description

Because of an API change in Hadoop 3 alpha 2, HadoopTimelineMetricsSink will fail to load with the following error:

2017-02-22 15:05:45,577 ERROR namenode.NameNode (NameNode.java:main(1709)) - Failed to start namenode.
java.lang.AbstractMethodError: org.apache.hadoop.metrics2.sink.timeline.HadoopTimelineMetricsSink.init(Lorg/apache/commons/configuration2/SubsetConfiguration;)V
       at org.apache.hadoop.metrics2.impl.MetricsConfig.getPlugin(MetricsConfig.java:208)
       at org.apache.hadoop.metrics2.impl.MetricsSystemImpl.newSink(MetricsSystemImpl.java:531)
       at org.apache.hadoop.metrics2.impl.MetricsSystemImpl.configureSinks(MetricsSystemImpl.java:503)
       at org.apache.hadoop.metrics2.impl.MetricsSystemImpl.configure(MetricsSystemImpl.java:479)
       at org.apache.hadoop.metrics2.impl.MetricsSystemImpl.start(MetricsSystemImpl.java:188)
       at org.apache.hadoop.metrics2.impl.MetricsSystemImpl.init(MetricsSystemImpl.java:163)
       at org.apache.hadoop.metrics2.lib.DefaultMetricsSystem.init(DefaultMetricsSystem.java:62)
       at org.apache.hadoop.metrics2.lib.DefaultMetricsSystem.initialize(DefaultMetricsSystem.java:58)
       at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1635)
       at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1704)
2017-02-22 15:05:45,578 INFO  util.ExitUtil (ExitUtil.java:terminate(124)) - Exiting with status 1

The Hadoop API MetricsPlugin.init() has a parameter that changed from org.apache.commons.configuration.SubsetConfiguration to org.apache.commons.configuration2.SubsetConfiguration.

See HADOOP-13660 for details of the API change.

Credit: the bug was found by Daniel Pol.

Issue Links

• relates to: HADOOP-13660 Upgrade commons-configuration version to 2.1