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| <h2 title="Class ReaderTextCSVParallel" class="title">Class ReaderTextCSVParallel</h2> |
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| <li><a href="../../../../../org/apache/sysds/runtime/io/MatrixReader.html" title="class in org.apache.sysds.runtime.io">org.apache.sysds.runtime.io.MatrixReader</a></li> |
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| <li>org.apache.sysds.runtime.io.ReaderTextCSVParallel</li> |
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| <pre>public class <span class="typeNameLabel">ReaderTextCSVParallel</span> |
| extends <a href="../../../../../org/apache/sysds/runtime/io/MatrixReader.html" title="class in org.apache.sysds.runtime.io">MatrixReader</a></pre> |
| <div class="block">Parallel version of ReaderTextCSV.java. To summarize, we do two passes in order to compute row offsets and the actual |
| read. We accordingly create count and read tasks and use fixed-size thread pools to execute these tasks. If the |
| target matrix is dense, the inserts are done lock-free. In contrast to textcell parallel read, we also do lock-free |
| inserts. If the matrix is sparse, because splits contain row partitioned lines and hence there is no danger of lost |
| updates. Note, there is also no sorting of sparse rows required because data comes in sorted order per row.</div> |
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| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/sysds/runtime/io/ReaderTextCSVParallel.html#ReaderTextCSVParallel-org.apache.sysds.runtime.io.FileFormatPropertiesCSV-">ReaderTextCSVParallel</a></span>(<a href="../../../../../org/apache/sysds/runtime/io/FileFormatPropertiesCSV.html" title="class in org.apache.sysds.runtime.io">FileFormatPropertiesCSV</a> props)</code> </td> |
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| <td class="colFirst"><code><a href="../../../../../org/apache/sysds/runtime/matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/sysds/runtime/io/ReaderTextCSVParallel.html#readMatrixFromHDFS-java.lang.String-long-long-int-long-">readMatrixFromHDFS</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> fname, |
| long rlen, |
| long clen, |
| int blen, |
| long estnnz)</code> </td> |
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| long rlen, |
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| <h4>ReaderTextCSVParallel</h4> |
| <pre>public ReaderTextCSVParallel(<a href="../../../../../org/apache/sysds/runtime/io/FileFormatPropertiesCSV.html" title="class in org.apache.sysds.runtime.io">FileFormatPropertiesCSV</a> props)</pre> |
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| <pre>public <a href="../../../../../org/apache/sysds/runtime/matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a> readMatrixFromHDFS(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> fname, |
| long rlen, |
| long clen, |
| int blen, |
| long estnnz) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a>, |
| <a href="../../../../../org/apache/sysds/runtime/DMLRuntimeException.html" title="class in org.apache.sysds.runtime">DMLRuntimeException</a></pre> |
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| <pre>public <a href="../../../../../org/apache/sysds/runtime/matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a> readMatrixFromInputStream(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/InputStream.html?is-external=true" title="class or interface in java.io">InputStream</a> is, |
| long rlen, |
| long clen, |
| int blen, |
| long estnnz) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a>, |
| <a href="../../../../../org/apache/sysds/runtime/DMLRuntimeException.html" title="class in org.apache.sysds.runtime">DMLRuntimeException</a></pre> |
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