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Posted to common-user@hadoop.apache.org by maha <ma...@umail.ucsb.edu> on 2011/03/14 18:29:27 UTC

Reading SequenceFileAsBinaryOutputFormat

Hi,

   I'm using SequenceFileAsBinaryOutputFormat to write the job output. Both Reduce key,value are of type BytesWritable.
 But when I try to read the job output file using SequenceFile.Reader, I get the following error:

org.apache.hadoop.fs.ChecksumException: Checksum error: /Users/Hadoop/hadoop-0.20.2/SeqFile at 0


By the way, I "-copyToLocal" the output file then try to read it using the SequenceFile.reader.

Any idea is appreciated. 

Maha

Re: Reading SequenceFileAsBinaryOutputFormat

Posted by maha <ma...@umail.ucsb.edu>.

I'd better restate my problem as it turns out to be my SequenceFile.Writer.
Thanks everyone,

Maha
On Mar 14, 2011, at 10:29 AM, maha wrote:

> Hi,
> 
>   I'm using SequenceFileAsBinaryOutputFormat to write the job output. Both Reduce key,value are of type BytesWritable.
> But when I try to read the job output file using SequenceFile.Reader, I get the following error:
> 
> org.apache.hadoop.fs.ChecksumException: Checksum error: /Users/Hadoop/hadoop-0.20.2/SeqFile at 0
> 
> 
> By the way, I "-copyToLocal" the output file then try to read it using the SequenceFile.reader.
> 
> Any idea is appreciated. 
> 
> Maha
>