custom python converter from HBase Result to tuple

[Antony Mayi]

Hi,

can anyone please give me some help how to write custom converter of hbase data 
to (for example) tuples of ((family, qualifier, value), ) for pyspark:

I was trying something like (here trying to tuples of 
("family:qualifier:value", )):


class HBaseResultToTupleConverter extends Converter[Any, List[String]] {
  override def convert(obj: Any): List[String] = {
    val result = obj.asInstanceOf[Result]
    result.rawCells().map(cell => 
List(Bytes.toString(CellUtil.cloneFamily(cell)),
      Bytes.toString(CellUtil.cloneQualifier(cell)),
      Bytes.toString(CellUtil.cloneValue(cell))).mkString(":")
    ).toList
  }
}


but then I get a error:

14/12/22 16:27:40 WARN python.SerDeUtil: 
Failed to pickle Java object as value: $colon$colon, falling back
to 'toString'. Error: couldn't introspect javabean: 
java.lang.IllegalArgumentException: wrong number of arguments


does anyone have a hint?

Thanks,
Antony.

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