[WHIRR-571] HadoopConfigurationBuilder assumes that a Hadoop cluster has both a namenode and a jobtracker

• Type: Bug
• Status: Resolved
• Priority: Trivial
• Resolution: Fixed
• Affects Version/s: 0.7.1
• Fix Version/s: 0.7.2
• Component/s: service/hadoop
• Assignee: Unassigned
• Reporter: Zuocheng Ren
• Created: 26/Mar/12 19:51
• Updated: 28/May/12 19:53
• Resolved: 28/Mar/12 09:53

Description

I removed hadoop-jobtracker and hadoop-tasktracker from whirr.instance-templates in hbase-ec2.properties.
Then I got the following error when trying to start a cluster.

Am I doing anything wrong by removing the tracker from instance templates?
Or is this an issue or not?
If it is not an issue, am I be able to start hbase without starting the jobtracker and tasktracker? What is the right way to do it?

Authorizing firewall ingress to [us-east-1/i-98c4f0fc] on ports [50070] for [128.83.158.52/32]
Authorizing firewall ingress to [us-east-1/i-98c4f0fc] on ports [8020, 8021] for [174.129.136.180/32]
Unable to start the cluster. Terminating all nodes.
java.util.NoSuchElementException
at com.google.common.collect.AbstractIterator.next(AbstractIterator.java:152)
at com.google.common.collect.Iterators.getOnlyElement(Iterators.java:293)
at com.google.common.collect.Iterables.getOnlyElement(Iterables.java:265)
at org.apache.whirr.Cluster.getInstanceMatching(Cluster.java:171)
at org.apache.whirr.service.hadoop.HadoopConfigurationBuilder.buildMapReduceConfiguration(HadoopConfigurationBuilder.java:135)
at org.apache.whirr.service.hadoop.HadoopConfigurationBuilder.buildMapReduce(HadoopConfigurationBuilder.java:71)
at org.apache.whirr.service.hadoop.HadoopClusterActionHandler.createHadoopConfigFiles(HadoopClusterActionHandler.java:104)
at org.apache.whirr.service.hadoop.HadoopClusterActionHandler.beforeConfigure(HadoopClusterActionHandler.java:89)
at org.apache.whirr.service.ClusterActionHandlerSupport.beforeAction(ClusterActionHandlerSupport.java:53)
at org.apache.whirr.actions.ScriptBasedClusterAction.execute(ScriptBasedClusterAction.java:100)
at org.apache.whirr.ClusterController.launchCluster(ClusterController.java:109)
at org.apache.whirr.cli.command.LaunchClusterCommand.run(LaunchClusterCommand.java:63)
at org.apache.whirr.cli.Main.run(Main.java:64)
at org.apache.whirr.cli.Main.main(Main.java:97)
Unable to load cluster state, assuming it has no running nodes.