|| at Aug 5, 2011 at 3:14 pm
I can envision an M/R job for the purpose of manipulating hdfs, such as (de)compressing files and resaving them back to HDFS. I just didn't think it should be necessary to *write a program* to do something so seemingly minimal. This (tarring/compressing/etc.) seems like an obvious method for moving data back and forth; I would expect the tools to support it.
I'll read up on "-text". Maybe that really is what I wanted, although I'm dubious since this has nothing to do with textual data at all. Anyway, I'll see what I can find on that.
On Aug 4, 2011, at 9:04 PM, Harsh J wrote:
The 'hadoop fs -text' tool does decompress a file given to it if
needed/able, but what you could also do is run a distributed mapreduce
job that converts from compressed to decompressed, that'd be much
On Fri, Aug 5, 2011 at 4:58 AM, Keith Wiley wrote:
Instead of "hd fs -put" hundreds of files of X megs, I want to do it once on a gzipped (or zipped) archive, one file, much smaller total megs. Then I want to decompress the archive on HDFS? I can't figure out what "hd fs" type command would do such a thing.
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