Package org.apache.sysds.runtime.matrix.data

Interface MatrixBlockDataOutput

All Known Implementing Classes:
CacheDataOutput, FastBufferedDataOutputStream
public interface MatrixBlockDataOutput
Any data output that is intended to support fast serialization / write of entire blocks should implement this interface. On write of a matrix block we check if the output stream is an implementation of this interface, if yes we directly pass the entire block instead of value-by-value. Known implementation classes: - CacheDataOutput (cache serialization into in-memory write buffer) - FastBufferedDataOutputStream (cache eviction to local file system)

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    writeDoubleArray(int len, double[] varr)
    Writes the double array of a dense block to the data output.
    void
    writeSparseRows(int rlen, SparseBlock rows)
    Writes the sparse rows array of a sparse block to the data output.

  • Method Details

    • writeDoubleArray

      void writeDoubleArray(int len, double[] varr) throws IOException
      Writes the double array of a dense block to the data output.
      Parameters:
      len - ?
      varr - ?
      Throws:
      IOException - if IOException occurs

    • writeSparseRows

      void writeSparseRows(int rlen, SparseBlock rows) throws IOException
      Writes the sparse rows array of a sparse block to the data output.
      Parameters:
      rlen - ?
      rows - sparse block
      Throws:
      IOException - if IOException occurs