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From "Brahma Reddy Battula (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-12319) DirectoryScanner will throw IllegalStateException when Multiple BP's are present
Date Fri, 18 Aug 2017 11:23:00 GMT
Brahma Reddy Battula created HDFS-12319:
-------------------------------------------

             Summary: DirectoryScanner will throw IllegalStateException when Multiple BP's
are present
                 Key: HDFS-12319
                 URL: https://issues.apache.org/jira/browse/HDFS-12319
             Project: Hadoop HDFS
          Issue Type: Bug
            Reporter: Brahma Reddy Battula
            Assignee: Brahma Reddy Battula


*Scenario:*
Configure "dfs.datanode.directoryscan.interval" as 60 and start federated cluster atleast
with teo nameservices.

{noformat}
2017-08-18 19:06:37,150 [java.util.concurrent.ThreadPoolExecutor$Worker@37d68b4e[State = -1,
empty queue]] ERROR datanode.DirectoryScanner (DirectoryScanner.java:getDiskReport(551)) -
Error compiling report for the volume, StorageId: DS-258b5e16-caa3-48c8-a0c8-b16934eb8a0c
java.util.concurrent.ExecutionException: java.lang.IllegalStateException: StopWatch is already
running
	at java.util.concurrent.FutureTask.report(FutureTask.java:122)
	at java.util.concurrent.FutureTask.get(FutureTask.java:192)
	at org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.getDiskReport(DirectoryScanner.java:542)
	at org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.scan(DirectoryScanner.java:392)
	at org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.reconcile(DirectoryScanner.java:373)
	at org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.run(DirectoryScanner.java:318)
	at java.util.concurrent.Executors$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$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.IllegalStateException: StopWatch is already running
	at org.apache.hadoop.util.StopWatch.start(StopWatch.java:49)
	at org.apache.hadoop.hdfs.server.datanode.DirectoryScanner$ReportCompiler.call(DirectoryScanner.java:612)
	at org.apache.hadoop.hdfs.server.datanode.DirectoryScanner$ReportCompiler.call(DirectoryScanner.java:579)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	... 3 more
{noformat}



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