[CHUKWA-328] NPE for empty chukwarecord sequence file

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.2.0
• Fix Version/s: 0.2.0, 0.3.0
• Assignee: Cheng
• Reporter: Cheng
• Created: 23/Jun/09 18:55
• Updated: 23/Jun/09 20:14
• Resolved: 23/Jun/09 20:14

Description

2009-06-23 17:21:44,307 ERROR main MetricDataLoaderPool - java.util.concurrent.ExecutionException: java.lang.NullPointerException
at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:222)
at java.util.concurrent.FutureTask.get(FutureTask.java:83)
at org.apache.hadoop.chukwa.dataloader.MetricDataLoaderPool.load(MetricDataLoaderPool.java:49)
at org.apache.hadoop.chukwa.extraction.demux.PostProcessorManager.processDemuxPigOutput(PostProcessorManager.java:188)
at org.apache.hadoop.chukwa.extraction.demux.PostProcessorManager.start(PostProcessorManager.java:145)
at org.apache.hadoop.chukwa.extraction.demux.PostProcessorManager.main(PostProcessorManager.java:80)
Caused by: java.lang.NullPointerException
at org.apache.hadoop.chukwa.extraction.engine.ChukwaRecord.getValue(ChukwaRecord.java:46)
at org.apache.hadoop.chukwa.extraction.engine.RecordUtil.getClusterName(RecordUtil.java:14)
at org.apache.hadoop.chukwa.dataloader.MetricDataLoader.run(MetricDataLoader.java:518)
at org.apache.hadoop.chukwa.dataloader.MetricDataLoader.call(MetricDataLoader.java:567)
at org.apache.hadoop.chukwa.dataloader.MetricDataLoader.call(MetricDataLoader.java:50)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
at java.lang.Thread.run(Thread.java:619)

The root cause is that we should not use the ChukwaRecord if there is no record in the file.