[AMBARI-25808] Metrics data simulator throws NPE

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.7.8, metrics-3.0.0
• Component/s: metrics
• Labels: pull-request-available
• Epic Link: Ambari Metrics GA
• Assignee: Mohammad Arshad
• Reporter: Mohammad Arshad
• Created: 12/Dec/22 17:12
• Updated: 01/Mar/23 07:37
• Resolved: 13/Dec/22 17:40

Description

user@host1 bin % ./start.sh  localhost:6188 2

2022-12-10 00:00:15,245 INFO  [main] loadsimulator.MetricsLoadSimulator (MetricsLoadSimulator.java:parseArgs(110)) - Recognized options: baseHostName=host1 hosts#=2 trafficMode=burst metricsHostName=localhost:6188 collectIntervalMillis=15000 sendIntervalMillis=60000 simulateMaster=false
2022-12-10 00:00:15,250 INFO  [main] data.MetricsGeneratorConfigurer (MetricsGeneratorConfigurer.java:readMetrics(67)) - Loading metrics_def/HOST.dat
2022-12-10 00:00:15,269 INFO  [main] data.MetricsGeneratorConfigurer (MetricsGeneratorConfigurer.java:readMetrics(67)) - Loading metrics_def/DATANODE.dat
2022-12-10 00:00:15,270 INFO  [main] data.MetricsGeneratorConfigurer (MetricsGeneratorConfigurer.java:readMetrics(67)) - Loading metrics_def/NODEMANAGER.dat
2022-12-10 00:00:15,272 INFO  [main] data.MetricsGeneratorConfigurer (MetricsGeneratorConfigurer.java:readMetrics(67)) - Loading metrics_def/SLAVE_HBASE.dat
Exception in thread "main" java.lang.NullPointerException
	at java.io.Reader.<init>(Reader.java:78)
	at java.io.InputStreamReader.<init>(InputStreamReader.java:72)
	at org.apache.ambari.metrics.core.loadsimulator.data.MetricsGeneratorConfigurer.readMetrics(MetricsGeneratorConfigurer.java:72)
	at org.apache.ambari.metrics.core.loadsimulator.data.MetricsGeneratorConfigurer.createMetricsForHost(MetricsGeneratorConfigurer.java:57)
	at org.apache.ambari.metrics.core.loadsimulator.LoadRunner.createApplicationMetrics(LoadRunner.java:112)
	at org.apache.ambari.metrics.core.loadsimulator.LoadRunner.addMetricsWorkers(LoadRunner.java:100)
	at org.apache.ambari.metrics.core.loadsimulator.LoadRunner.prepareWorkers(LoadRunner.java:88)
	at org.apache.ambari.metrics.core.loadsimulator.LoadRunner.<init>(LoadRunner.java:69)
	at org.apache.ambari.metrics.core.loadsimulator.MetricsLoadSimulator.main(MetricsLoadSimulator.java:48)

Issue Links

• links to: GitHub PR#3608
• links to: GitHub Pull Request #81