NullPointerException in
DistributedFileSystem$RawDistributedFileSystem.reportChecksumFailure
--------------------------------------------------------------------------------------------
Key: HADOOP-1118
URL: https://issues.apache.org/jira/browse/HADOOP-1118
Project: Hadoop
Issue Type: Bug
Components: mapred
Affects Versions: 0.12.0
Reporter: Nigel Daley
I saw one NullPointerException in the JT log during a large sort run:
2007-03-14 08:36:10,210 INFO org.apache.hadoop.mapred.TaskInProgress: Error
from task_0002_m_037315_1: java.lang.NullPointerException
at
org.apache.hadoop.dfs.DistributedFileSystem$RawDistributedFileSystem.reportChecksumFailure(DistributedFileSystem.java:326)
at
org.apache.hadoop.dfs.DistributedFileSystem.reportChecksumFailure(DistributedFileSystem.java:405)
at
org.apache.hadoop.fs.ChecksumFileSystem$FSInputChecker.verifySum(ChecksumFileSystem.java:253)
at
org.apache.hadoop.fs.ChecksumFileSystem$FSInputChecker.readBuffer(ChecksumFileSystem.java:211)
at
org.apache.hadoop.fs.ChecksumFileSystem$FSInputChecker.read(ChecksumFileSystem.java:167)
at
org.apache.hadoop.fs.FSDataInputStream$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.io.SequenceFile$Reader.sync(SequenceFile.java:1712)
at
org.apache.hadoop.mapred.SequenceFileRecordReader.<init>(SequenceFileRecordReader.java:45)
at
org.apache.hadoop.mapred.SequenceFileInputFormat.getRecordReader(SequenceFileInputFormat.java:55)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:139)
at
org.apache.hadoop.mapred.TaskTracker$Child.main(TaskTracker.java:1445)
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