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Posted to user@spark.apache.org by zhangjp <59...@qq.com> on 2016/01/25 07:53:37 UTC
回复: how to save Matrix type result to hdfs file using java
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.
------------------ 原始邮件 ------------------
发件人: "Yanbo Liang";<yb...@gmail.com>;
发送时间: 2016年1月25日(星期一) 中午1:31
收件人: "zhangjp"<59...@qq.com>;
抄送: "user"<us...@spark.apache.org>;
主题: Re: how to save Matrix type result to hdfs file using java
Matrix can be save as column of type MatrixUDT.