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rpednekar
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rpednekar
Silver ⭐️⭐️
April 1, 2017

NullPointerException from SimpleRegionNormalizer

  • October 5, 2026 at 9:25 AM
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PROBLEM: HBase Master failing due to following exception.

2017-03-30 20:51:13,130 ERROR [<HOST NAME>,33733,1490218864063_ChoreService_3] normalizer.RegionNormalizerChore: Caught error
java.lang.NullPointerException
at org.apache.hadoop.hbase.master.normalizer.SimpleRegionNormalizer.getRegionSize(SimpleRegionNormalizer.java:172)
at org.apache.hadoop.hbase.master.normalizer.SimpleRegionNormalizer.computePlanForTable(SimpleRegionNormalizer.java:99)
at org.apache.hadoop.hbase.master.HMaster.normalizeRegions(HMaster.java:1417)
at org.apache.hadoop.hbase.master.normalizer.RegionNormalizerChore.chore(RegionNormalizerChore.java:49)
at org.apache.hadoop.hbase.ScheduledChore.run(ScheduledChore.java:185)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745)

ROOT CASUE:

https://issues.apache.org/jira/browse/HBASE-15933

WORKAROUND:

Move Splitting WAL files from hbase.root.dir (by default it set to /apps/hbase/data/WALs) to some tmp directory.

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