Reducer doesn't have the ((FileSplit) context.getInputSplit()). Just the
mapper.
I would like to know from java which files a reducer is reading, and to
where it is writing. Can I do this?
Thanks,
On 09-03-2015 15:44, Kai Voigt wrote:
Hi,
the context object (passed to map(), reduce() and setup()) contains
information about the input split, such as the file name.
From the top of my head: String fileName = ((FileSplit)
context.getInputSplit()).getPath().getName();
Kai
Am 09.03.2015 um 16:39 schrieb xeonmailinglist-gmail
<[email protected] <mailto:[email protected]>>:
Hi,
I am looking to YARN MapReduce internals, and I would like know if it
possible to know which file a map/reduce function is reading or
writing from inside a map or reduce function defined by the user, or
simply by the client?
Thanks,
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