我正在使用Hadoop单节点,稍后可能会转移到多节点。现在,同一个节点既是主节点也是从节点,因此namenode
,datanode
resource manager
和node manager
在同一台PC上运行。Hadoop在运行terasort时崩溃?
每当我对安装在/home/hadoop/hdfs
(这里hadoop
是用户名)单独测试磁盘触发terasort
时,出现以下错误:
INFO mapreduce.Job: Task Id : attempt_1429766544852_0001_m_001255_0, Status : FAILED
Error: org.apache.hadoop.util.DiskChecker$DiskErrorException: Could not find any valid local directory for attempt_1429766544852_0001_m_001255_0_spill_1.out
at org.apache.hadoop.fs.LocalDirAllocator$AllocatorPerContext.getLocalPathForWrite(LocalDirAllocator.java:398)
at org.apache.hadoop.fs.LocalDirAllocator.getLocalPathForWrite(LocalDirAllocator.java:150)
at org.apache.hadoop.fs.LocalDirAllocator.getLocalPathForWrite(LocalDirAllocator.java:131)
at org.apache.hadoop.mapred.YarnOutputFiles.getSpillFileForWrite(YarnOutputFiles.java:159)
at org.apache.hadoop.mapred.MapTask$MapOutputBuffer.sortAndSpill(MapTask.java:1573)
at org.apache.hadoop.mapred.MapTask$MapOutputBuffer.flush(MapTask.java:1467)
at org.apache.hadoop.mapred.MapTask$NewOutputCollector.close(MapTask.java:699)
at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:769)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:339)
at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:162)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:415)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1491)
at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:157)
15/04/23 11:36:07 INFO mapreduce.Job: Task Id : attempt_1429766544852_0001_m_001258_0, Status : FAILED
Error: java.io.IOException: No space left on device
at java.io.FileOutputStream.writeBytes(Native Method)
at java.io.FileOutputStream.write(FileOutputStream.java:345)
at org.apache.hadoop.fs.RawLocalFileSystem$LocalFSFileOutputStream.write(RawLocalFileSystem.java:236)
at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82)
at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140)
at java.io.FilterOutputStream.flush(FilterOutputStream.java:140)
at java.io.DataOutputStream.flush(DataOutputStream.java:123)
at java.io.FilterOutputStream.flush(FilterOutputStream.java:140)
at java.io.FilterOutputStream.flush(FilterOutputStream.java:140)
at java.io.DataOutputStream.flush(DataOutputStream.java:123)
at org.apache.hadoop.mapred.IFile$Writer.close(IFile.java:163)
at org.apache.hadoop.mapred.MapTask$MapOutputBuffer.sortAndSpill(MapTask.java:1633)
at org.apache.hadoop.mapred.MapTask$MapOutputBuffer.access$900(MapTask.java:852)
at org.apache.hadoop.mapred.MapTask$MapOutputBuffer$SpillThread.run(MapTask.java:1510)
Error: java.io.IOException: No space left on device
at java.io.FileOutputStream.writeBytes(Native Method)
at java.io.FileOutputStream.write(FileOutputStream.java:345)
at org.apache.hadoop.fs.RawLocalFileSystem$LocalFSFileOutputStream.write(RawLocalFileSystem.java:236)
at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82)
at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140)
at java.io.FilterOutputStream.flush(FilterOutputStream.java:140)
at java.io.DataOutputStream.flush(DataOutputStream.java:123)
at java.io.FilterOutputStream.flush(FilterOutputStream.java:140)
at java.io.FilterOutputStream.flush(FilterOutputStream.java:140)
at java.io.DataOutputStream.flush(DataOutputStream.java:123)
at org.apache.hadoop.mapred.IFile$Writer.close(IFile.java:163)
at org.apache.hadoop.mapred.MapTask$MapOutputBuffer.sortAndSpill(MapTask.java:1633)
at org.apache.hadoop.mapred.MapTask$MapOutputBuffer.access$900(MapTask.java:852)
at org.apache.hadoop.mapred.MapTask$MapOutputBuffer$SpillThread.run(MapTask.java:1510)
Error: java.io.IOException: Spill failed
at org.apache.hadoop.mapred.MapTask$MapOutputBuffer.checkSpillException(MapTask.java:1540)
at org.apache.hadoop.mapred.MapTask$MapOutputBuffer.access$300(MapTask.java:852)
at org.apache.hadoop.mapred.MapTask$MapOutputBuffer$Buffer.write(MapTask.java:1352)
at org.apache.hadoop.mapred.MapTask$MapOutputBuffer$Buffer.write(MapTask.java:1329)
at java.io.DataOutputStream.writeByte(DataOutputStream.java:153)
at org.apache.hadoop.io.WritableUtils.writeVLong(WritableUtils.java:273)
at org.apache.hadoop.io.WritableUtils.writeVInt(WritableUtils.java:253)
at org.apache.hadoop.io.Text.write(Text.java:323)
at org.apache.hadoop.io.serializer.WritableSerialization$WritableSerializer.serialize(WritableSerialization.java:98)
at org.apache.hadoop.io.serializer.WritableSerialization$WritableSerializer.serialize(WritableSerialization.java:82)
at org.apache.hadoop.mapred.MapTask$MapOutputBuffer.collect(MapTask.java:1127)
at org.apache.hadoop.mapred.MapTask$NewOutputCollector.write(MapTask.java:691)
at org.apache.hadoop.mapreduce.task.TaskInputOutputContextImpl.write(TaskInputOutputContextImpl.java:89)
at org.apache.hadoop.mapreduce.lib.map.WrappedMapper$Context.write(WrappedMapper.java:112)
at org.apache.hadoop.mapreduce.Mapper.map(Mapper.java:124)
at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:145)
at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:763)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:339)
at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:162)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:415)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1491)
基本上spill failed
,Disk checker
,no space left
等
当我研究了这个问题,继续运行df -h
在单独的终端上给出了线索,它正在使用/
目录进行一些内部操作。在/
上没有剩余空间时,作业失败。
我试着将hadoop.tmp.dir
更改为某些其他安装的磁盘。它运行良好,但再次失败,因为该磁盘还没有足够的空间。
我的问题是为什么会发生,我们可以避免这个问题吗?或者,在.xml
配置文件中配置了什么确切的参数,以便将其限制在RAM
之内或使用磁盘空间,但请确保不会使作业失败并使用它拥有的任何空间,但由于我提到的任何错误而不会崩溃?
在此先感谢。 PS:我已经研究过关于所有配置参数的所有配置参数,并且几乎完成了所有类型的尝试,但仍然失败。因此,我想到这里来问,希望你能帮忙。
你可以在这里发布你的配置文件吗? – Ashrith
我在配置文件中有很多更改。我将尝试运行所需的最小更改,并将其放在此处。但事情是,如果你知道任何可以设置的参数以避免泄漏,那么请在这里发帖。 – Omkant
我忘了提及,我正在使用Hadoop 2.2.0 – Omkant