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https://issues.apache.org/jira/browse/HADOOP-1619?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12514349
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Raghu Angadi commented on HADOOP-1619:
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+1.
For some reason I did not make skip() in DFSClient.cc synchronized. Could you
add this in this patch? Thanks.
> FSInputChecker attempts to seek past EOF
> ----------------------------------------
>
> Key: HADOOP-1619
> URL: https://issues.apache.org/jira/browse/HADOOP-1619
> Project: Hadoop
> Issue Type: Bug
> Components: fs
> Affects Versions: 0.14.0
> Reporter: Nigel Daley
> Assignee: Hairong Kuang
> Priority: Blocker
> Fix For: 0.14.0
>
> Attachments: skip.patch
>
>
> I'm not sure which class in the stack trace below is responsible for
> attempting to seek past the end of file.
> 2007-07-16 20:31:40,598 INFO org.apache.hadoop.mapred.TaskInProgress: Error
> from task_200707162028_0014_m_000000_0: java.io.IOException: Cannot seek
> after EOF
> at
> org.apache.hadoop.dfs.DFSClient$DFSInputStream.seek(DFSClient.java:1040)
> at
> org.apache.hadoop.fs.FSDataInputStream.seek(FSDataInputStream.java:37)
> at
> org.apache.hadoop.fs.ChecksumFileSystem$ChecksumFSInputChecker.readChunk(ChecksumFileSystem.java:188)
> at
> org.apache.hadoop.fs.FSInputChecker.readChecksumChunk(FSInputChecker.java:234)
> at org.apache.hadoop.fs.FSInputChecker.fill(FSInputChecker.java:176)
> at org.apache.hadoop.fs.FSInputChecker.read1(FSInputChecker.java:193)
> at org.apache.hadoop.fs.FSInputChecker.read(FSInputChecker.java:157)
> at
> org.apache.hadoop.fs.FSInputChecker.readFully(FSInputChecker.java:353)
> at org.apache.hadoop.fs.FSInputChecker.seek(FSInputChecker.java:331)
> at org.apache.hadoop.fs.FSInputChecker.skip(FSInputChecker.java:306)
> at java.io.FilterInputStream.skip(FilterInputStream.java:125)
> at java.io.FilterInputStream.skip(FilterInputStream.java:125)
> at
> com.yahoo.pig.impl.io.InputStreamPosition.skip(InputStreamPosition.java:55)
> at java.io.BufferedInputStream.skip(BufferedInputStream.java:349)
> at java.io.FilterInputStream.skip(FilterInputStream.java:125)
> at
> com.yahoo.pig.impl.builtin.RandomSampleLoader.getNext(RandomSampleLoader.java:34)
> at
> com.yahoo.pig.impl.mapreduceExec.PigInputFormat$PigRecordReader.next(PigInputFormat.java:169)
> at org.apache.hadoop.mapred.MapTask$1.next(MapTask.java:171)
> at
> com.yahoo.pig.impl.mapreduceExec.PigMapReduce.run(PigMapReduce.java:98)
> at org.apache.hadoop.mapred.MapTask.run(MapTask.java:189)
> at
> org.apache.hadoop.mapred.TaskTracker$Child.main(TaskTracker.java:1771)
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