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Posted to hdfs-dev@hadoop.apache.org by "Ewan Higgs (JIRA)" <ji...@apache.org> on 2017/10/19 08:14:01 UTC

[jira] [Created] (HDFS-12685) FsVolumeImpl exception when scanning Provided storage volume

Ewan Higgs created HDFS-12685:
---------------------------------

             Summary: FsVolumeImpl exception when scanning Provided storage volume
                 Key: HDFS-12685
                 URL: https://issues.apache.org/jira/browse/HDFS-12685
             Project: Hadoop HDFS
          Issue Type: Sub-task
            Reporter: Ewan Higgs


I left a Datanode running overnight and found this in the logs in the morning:

{code}
2017-10-18 23:51:54,391 ERROR datanode.DirectoryScanner: Error compiling report for the volume, StorageId: DS-e75ebc3c-6b12-424e-875a-a4ae1a4dcc29                                                                                            
java.util.concurrent.ExecutionException: java.lang.IllegalArgumentException: URI scheme is not "file"                                                                                                                                         
        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:544)                                                                                                                                   
        at org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.scan(DirectoryScanner.java:393)                                                                                                                                            
        at org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.reconcile(DirectoryScanner.java:375)                                                                                                                                       
        at org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.run(DirectoryScanner.java:320)                                                                                                                                             
        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:1149)                                                                                                                                                    
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)                                                                                                                                                    
        at java.lang.Thread.run(Thread.java:748)                                                                                                                                                                                              
Caused by: java.lang.IllegalArgumentException: URI scheme is not "file"                                                                                                                                                                       
        at java.io.File.<init>(File.java:421)                                                                                                                                                                                                 
        at org.apache.hadoop.hdfs.server.datanode.fsdataset.FsVolumeSpi$ScanInfo.<init>(FsVolumeSpi.java:319)                                                                                                                                 
        at org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.ProvidedVolumeImpl$ProvidedBlockPoolSlice.compileReport(ProvidedVolumeImpl.java:155)                                                                                         
        at org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.ProvidedVolumeImpl.compileReport(ProvidedVolumeImpl.java:493)                                                                                                                
        at org.apache.hadoop.hdfs.server.datanode.DirectoryScanner$ReportCompiler.call(DirectoryScanner.java:620)                                                                                                                             
        at org.apache.hadoop.hdfs.server.datanode.DirectoryScanner$ReportCompiler.call(DirectoryScanner.java:581)                                                                                                                             
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)                                                                                                                                                                           
        ... 3 more 
{code}

The code in question tries to make a File from the URI:

{code}
    public ScanInfo(long blockId, File blockFile, File metaFile,
        FsVolumeSpi vol, FileRegion fileRegion, long length) {
      this.blockId = blockId;
      String condensedVolPath =
          (vol == null || vol.getBaseURI() == null) ? null :
            getCondensedPath(new File(vol.getBaseURI()).getAbsolutePath()); // <-------
      this.blockSuffix = blockFile == null ? null :
        getSuffix(blockFile, condensedVolPath);
      this.blockLength = length;
      if (metaFile == null) {
        this.metaSuffix = null;
      } else if (blockFile == null) {
        this.metaSuffix = getSuffix(metaFile, condensedVolPath);
      } else {
        this.metaSuffix = getSuffix(metaFile,
            condensedVolPath + blockSuffix);
      }
      this.volume = vol;
      this.fileRegion = fileRegion;
    }
{code}



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