I presume that you need to have access to the path of each file you are
reading.
I don't know whether there is a good way to do that for HDFS, I need to
read the files myself, something like:
def openWithPath(inputPath: String, sc:SparkContext) = {
val fs = (new
Path(inputPath)).getFileSystem(sc.hadoopConfiguration)
val filesIt = fs.listFiles(path, false)
val paths = new ListBuffer[URI]
while (filesIt.hasNext) {
paths += filesIt.next.getPath.toUri
}
val withPaths = paths.toList.map{ p =>
sc.newAPIHadoopFile[LongWritable, Text,
TextInputFormat](p.toString).map{ case (_,s) => (p, s.toString) }
}
withPaths.reduce{ _ ++ _ }
}
...
I would be interested if there is a better way to do the same thing ...
Cheers,
a:
On Sun, Jun 1, 2014 at 6:00 PM, Nicholas Chammas <[email protected]
> wrote:
> Could you provide an example of what you mean?
>
> I know it's possible to create an RDD from a path with wildcards, like in
> the subject.
>
> For example, sc.textFile('s3n://bucket/2014-??-??/*.gz'). You can also
> provide a comma delimited list of paths.
>
> Nick
>
> 2014년 6월 1일 일요일, Oleg Proudnikov<[email protected]>님이 작성한 메시지:
>
> Hi All,
>>
>> Is it possible to create an RDD from a directory tree of the following
>> form?
>>
>> RDD[(PATH, Seq[TEXT])]
>>
>> Thank you,
>> Oleg
>>
>>
