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Posted to mapreduce-user@hadoop.apache.org by Mike Spreitzer <ms...@us.ibm.com> on 2011/05/01 19:43:34 UTC
Writable#write given null DataOutput
I am running Hadoop core 0.20.2, with no additions or modifications. I
ran a series of 30 similar jobs, each with about 3/4 of a billion
(key,value) pairs written by the mapper. In the midst of the 29th job, I
got one NullPointerException, from the first line of my value's write
method. That line reads
out.writeDouble(x);
where "void write(DataOutput out)" is the signature of the write method
and "double x" is a field of the value object whose write method is being
invoked. Is this a known bug?
Thanks,
Mike Spreitzer
SMTP: mspreitz@us.ibm.com, Lotus Notes: Mike Spreitzer/Watson/IBM
Office phone: +1-914-784-6424 (IBM T/L 863-)
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