Details
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Bug
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Status: Closed
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Blocker
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Resolution: Fixed
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0.13.1, 0.14.3
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None
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None
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Reviewed
Description
[knoguchi]$ hadoop dfs -cat fileA
07/09/13 17:36:02 INFO fs.DFSClient: Could not obtain block 0 from any node:
java.io.IOException: No live nodes contain current block
07/09/13 17:36:20 INFO fs.DFSClient: Could not obtain block 0 from any node:
java.io.IOException: No live nodes contain current block
[repeats forever]
Setting one of the Debug statement to Warn, it kept on showing
WARN org.apache.hadoop.fs.DFSClient: Failed to connect to /99.99.999.9 :11111:java.io.IOException: Recorded block size is 7496, but datanode reports size of 0 at org.apache.hadoop.dfs.DFSClient$DFSInputStream.blockSeekTo(DFSClient.java:690) at org.apache.hadoop.dfs.DFSClient$DFSInputStream.read(DFSClient.java:771) at org.apache.hadoop.fs.FSDataInputStream$PositionCache.read(FSDataInputStream.java:41) at java.io.BufferedInputStream.fill(BufferedInputStream.java:218) at java.io.BufferedInputStream.read1(BufferedInputStream.java:258) at java.io.BufferedInputStream.read(BufferedInputStream.java:317) at java.io.DataInputStream.readFully(DataInputStream.java:178) at java.io.DataInputStream.readFully(DataInputStream.java:152) at org.apache.hadoop.fs.ChecksumFileSystem$FSInputChecker.(ChecksumFileSystem.java:123) at org.apache.hadoop.fs.ChecksumFileSystem.open(ChecksumFileSystem.java:340) at org.apache.hadoop.fs.FileSystem.open(FileSystem.java:259) at org.apache.hadoop.util.CopyFiles$FSCopyFilesMapper.map(CopyFiles.java:466) at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:48) at org.apache.hadoop.mapred.MapTask.run(MapTask.java:186) at org.apache.hadoop.mapred.TaskTracker$Child.main(TaskTracker.java:1707)
Turns out fileA was corrupted. Fsck showed crc file of 7496 bytes, but when I searched for the blocks on each node, 3 replicas were all size 0.
Not sure how it got corrupted, but it would be nice if the dfs command fail instead of getting into an infinite loop.
