scala - Compress Output Scalding / Cascading TsvCompressed -

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so people have been having problems compressing output of scalding jobs including myself. after googling odd hiff of answer in obscure forum somewhere nothing suitable peoples copy , paste needs.

i output tsv, writes compressed output.

anyway after faffification managed write tsvcompressed output seems job (you still need set hadoop job system configuration properties, i.e. set compress true, , set codec sensible or defaults crappy deflate)

import com.twitter.scalding._ import cascading.tuple.fields import cascading.scheme.local import cascading.scheme.hadoop.{textline, textdelimited} import cascading.scheme.scheme import org.apache.hadoop.mapred.{outputcollector, recordreader, jobconf}  case class tsvcompressed(p: string) extends fixedpathsource(p) delimitedschemecompressed  trait delimitedschemecompressed extends source {   val types: array[class[_]] = null    override def localscheme = new local.textdelimited(fields.all, false, false, "\t", types)    override def hdfsscheme = {     val temp = new textdelimited(fields.all, false, false, "\t", types)     temp.setsinkcompression(textline.compress.enable)     temp.asinstanceof[scheme[jobconf,recordreader[_,_],outputcollector[_,_],_,_]]   } }

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