Check if your datanodes are starting up correctly.
This error occurs when there are file entries in namenode. By it meets
problems to fetch file data from datanodes.
2009/9/15 scott w :
> I am trying to read data placed on hdfs in one EC2 cluster from a different
> EC2 cluster and am getting the errors below. Both EC2 Clusters are running
> v0.19. When I run 'hadoop -get small-page-index small-page-index' on the
> source cluster everything works fine and the data is properly retrieved out
> of hdfs. FWIW, hadoop fs -ls works fine across clusters. Any ideas of what
> might be the problem and how to remedy it?
>
> thanks,
> Scott
>
> Here are the errors I am getting:
>
> [r...@domu-12-31-38-00-4e-32 ~]# hadoop fs -cp
> hdfs://domU-12-31-38-00-1C-B1.compute-1.internal:50001/user/root/small-page-index
> small-page-index
> 09/09/14 21:48:43 INFO hdfs.DFSClient: Could not obtain block
> blk_-4157273618194597760_1160 from any node: java.io.IOException: No live
> nodes contain current block
> 09/09/14 21:51:46 INFO hdfs.DFSClient: Could not obtain block
> blk_-4157273618194597760_1160 from any node: java.io.IOException: No live
> nodes contain current block
> 09/09/14 21:54:49 INFO hdfs.DFSClient: Could not obtain block
> blk_-4157273618194597760_1160 from any node: java.io.IOException: No live
> nodes contain current block
> Exception closing file /user/root/small-page-index/aIndex/_0.cfs
> java.io.IOException: Filesystem closed
> at org.apache.hadoop.hdfs.DFSClient.checkOpen(DFSClient.java:198)
> at org.apache.hadoop.hdfs.DFSClient.access$600(DFSClient.java:65)
> at
> org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.closeInternal(DFSClient.java:3084)
> at
> org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.close(DFSClient.java:3053)
> at
> org.apache.hadoop.hdfs.DFSClient$LeaseChecker.close(DFSClient.java:942)
> at org.apache.hadoop.hdfs.DFSClient.close(DFSClient.java:210)
> at
> org.apache.hadoop.hdfs.DistributedFileSystem.close(DistributedFileSystem.java:243)
> at org.apache.hadoop.fs.FileSystem$Cache.closeAll(FileSystem.java:1413)
> at org.apache.hadoop.fs.FileSystem.closeAll(FileSystem.java:236)
> at
> org.apache.hadoop.fs.FileSystem$ClientFinalizer.run(FileSystem.java:221)
>
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