Custom Record Reader Example?

[Mark Vigeant <ma...@riskmetrics.com>]

Hey-

I'm trying to update a custom recordreader written for 0.18.3 and was wondering if either

A)     Anyone has any example code for extending RecordReader in 0.20.1 (in the mapreduce package, not the mapred interface)?
or

B)      Anyone can give me tips on how to write getCurrentKey() and getCurrentValue()?


Thank you so much!

Mark Vigeant
RiskMetrics Group, Inc.

RE: Custom Record Reader Example?

[Omer Trajman <om...@vertica.com>]

I found the DBRecordReader a good example - it's in
o.a.h.m.lib.db.DBInputFormat

-----Original Message-----
From: Mark Vigeant [mailto:mark.vigeant@riskmetrics.com] 
Sent: Tuesday, October 06, 2009 5:22 PM
To: common-user@hadoop.apache.org
Subject: Custom Record Reader Example?

Hey-

I'm trying to update a custom recordreader written for 0.18.3 and was
wondering if either

A)     Anyone has any example code for extending RecordReader in 0.20.1
(in the mapreduce package, not the mapred interface)?
or

B)      Anyone can give me tips on how to write getCurrentKey() and
getCurrentValue()?


Thank you so much!

Mark Vigeant
RiskMetrics Group, Inc.