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https://issues.apache.org/jira/browse/HBASE-28144?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Viraj Jasani resolved HBASE-28144.
----------------------------------
Hadoop Flags: Reviewed
Resolution: Fixed
> Canary publish read failure fails with NPE if region location is null
> ---------------------------------------------------------------------
>
> Key: HBASE-28144
> URL: https://issues.apache.org/jira/browse/HBASE-28144
> Project: HBase
> Issue Type: Bug
> Affects Versions: 2.5.5
> Reporter: Viraj Jasani
> Assignee: Viraj Jasani
> Priority: Major
> Fix For: 2.6.0, 2.4.18, 2.5.6, 3.0.0-beta-1
>
>
> Region with null server name causes canary failures while publishing read
> failure i.e. while updating perServerFailuresCount map:
> {code:java}
> 2023-10-09 15:24:11 [CanaryMonitor-1696864805801] ERROR tool.Canary(1480):
> Sniff region failed!
> java.util.concurrent.ExecutionException: java.lang.NullPointerException
> at java.util.concurrent.FutureTask.report(FutureTask.java:122)
> at java.util.concurrent.FutureTask.get(FutureTask.java:192)
> at
> org.apache.hadoop.hbase.tool.CanaryTool$RegionMonitor.run(CanaryTool.java:1478)
> at java.lang.Thread.run(Thread.java:750)
> Caused by: java.lang.NullPointerException
> at
> java.util.concurrent.ConcurrentHashMap.compute(ConcurrentHashMap.java:1837)
> at
> org.apache.hadoop.hbase.tool.CanaryTool$RegionStdOutSink.incFailuresCountDetails(CanaryTool.java:327)
> at
> org.apache.hadoop.hbase.tool.CanaryTool$RegionStdOutSink.publishReadFailure(CanaryTool.java:353)
> at
> org.apache.hadoop.hbase.tool.CanaryTool$RegionTask.readColumnFamily(CanaryTool.java:548)
> at
> org.apache.hadoop.hbase.tool.CanaryTool$RegionTask.read(CanaryTool.java:587)
> at
> org.apache.hadoop.hbase.tool.CanaryTool$RegionTask.call(CanaryTool.java:502)
> at
> org.apache.hadoop.hbase.tool.CanaryTool$RegionTask.call(CanaryTool.java:470)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> ... 1 more {code}
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