?????? how to save Matrix type result to hdfs file using java

[zhangjp]

Hi  Yanbo,
      I'm using java language and the environment is spark 1.4.1.  
  
      Can u tell me how to do it more detail , the follows is my code, how can 
i save the cov to hdfs file ?
 "
     RowMatrix mat = new RowMatrix(rows.rdd());
      Matrix cov = mat.computeCovariance();   "
       The cov is  localMatrix, if the Matrix is much more than 5G , is there 
any better way to do it.
  
        THX.
 
 
 ------------------ ???????? ------------------
  ??????: "Yanbo Liang";<yblia...@gmail.com>;
 ????????: 2016??1??25??(??????) ????1:31
 ??????: "zhangjp"<592426...@qq.com>; 
 ????: "user"<user@spark.apache.org>; 
 ????: Re: how to save Matrix type result to hdfs file using java

 

 Matrix can be save as column of type MatrixUDT.