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| <div class="subTitle">org.apache.sysds.runtime.controlprogram.parfor</div> |
| <h2 title="Class DataPartitionerLocal" class="title">Class DataPartitionerLocal</h2> |
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| <li><a href="../../../../../../org/apache/sysds/runtime/controlprogram/parfor/DataPartitioner.html" title="class in org.apache.sysds.runtime.controlprogram.parfor">org.apache.sysds.runtime.controlprogram.parfor.DataPartitioner</a></li> |
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| <li>org.apache.sysds.runtime.controlprogram.parfor.DataPartitionerLocal</li> |
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| <pre>public class <span class="typeNameLabel">DataPartitionerLocal</span> |
| extends <a href="../../../../../../org/apache/sysds/runtime/controlprogram/parfor/DataPartitioner.html" title="class in org.apache.sysds.runtime.controlprogram.parfor">DataPartitioner</a></pre> |
| <div class="block">Partitions a given matrix into row or column partitions with a two pass-approach. |
| In the first phase the input matrix is read from HDFS and sorted into block partitions |
| in a staging area in the local file system according to the partition format. |
| In order to allow for scalable partitioning, we process one block at a time. |
| Furthermore, in the second phase, all blocks of a partition are append to a sequence file |
| on HDFS. Block-wise partitioning and write-once semantics of sequence files require the |
| indirection over the local staging area. For scalable computation, we process one |
| sequence file at a time. |
| |
| NOTE: For the resulting partitioned matrix, we store block and cell indexes wrt partition boundaries. |
| This means that the partitioned matrix CANNOT be read as a traditional matrix because there are |
| for example multiple blocks with same index (while the actual index is encoded in the path). |
| In order to enable full read of partition matrices, data converter would need to handle negative |
| row/col offsets for partitioned read. Currently not done in order to avoid overhead from normal read |
| and since partitioning only applied if exclusively indexed access.</div> |
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| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../org/apache/sysds/runtime/controlprogram/parfor/DataPartitionerLocal.html#DataPartitionerLocal-org.apache.sysds.runtime.controlprogram.ParForProgramBlock.PartitionFormat-int-">DataPartitionerLocal</a></span>(<a href="../../../../../../org/apache/sysds/runtime/controlprogram/ParForProgramBlock.PartitionFormat.html" title="class in org.apache.sysds.runtime.controlprogram">ParForProgramBlock.PartitionFormat</a> dpf, |
| int par)</code> |
| <div class="block">DataPartitionerLocal constructor.</div> |
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| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/sysds/runtime/controlprogram/parfor/DataPartitionerLocal.html#writeBinaryBlockSequenceFileToHDFS-org.apache.hadoop.mapred.JobConf-java.lang.String-java.lang.String-boolean-">writeBinaryBlockSequenceFileToHDFS</a></span>(org.apache.hadoop.mapred.JobConf job, |
| <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> dir, |
| <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> lpdir, |
| boolean threadsafe)</code> </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/sysds/runtime/controlprogram/parfor/DataPartitionerLocal.html#writeBinaryCellSequenceFileToHDFS-org.apache.hadoop.mapred.JobConf-java.lang.String-java.lang.String-">writeBinaryCellSequenceFileToHDFS</a></span>(org.apache.hadoop.mapred.JobConf job, |
| <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> dir, |
| <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> lpdir)</code> </td> |
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| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/sysds/runtime/controlprogram/parfor/DataPartitionerLocal.html#writeTextCellFileToHDFS-org.apache.hadoop.mapred.JobConf-java.lang.String-java.lang.String-">writeTextCellFileToHDFS</a></span>(org.apache.hadoop.mapred.JobConf job, |
| <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> dir, |
| <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> lpdir)</code> </td> |
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| <h3>Methods inherited from class org.apache.sysds.runtime.controlprogram.parfor.<a href="../../../../../../org/apache/sysds/runtime/controlprogram/parfor/DataPartitioner.html" title="class in org.apache.sysds.runtime.controlprogram.parfor">DataPartitioner</a></h3> |
| <code><a href="../../../../../../org/apache/sysds/runtime/controlprogram/parfor/DataPartitioner.html#createPartitionedMatrixObject-org.apache.sysds.runtime.controlprogram.caching.MatrixObject-org.apache.sysds.runtime.controlprogram.caching.MatrixObject-boolean-">createPartitionedMatrixObject</a>, <a href="../../../../../../org/apache/sysds/runtime/controlprogram/parfor/DataPartitioner.html#createPartitionedMatrixObject-org.apache.sysds.runtime.controlprogram.caching.MatrixObject-java.lang.String-">createPartitionedMatrixObject</a>, <a href="../../../../../../org/apache/sysds/runtime/controlprogram/parfor/DataPartitioner.html#createPartitionedMatrixObject-org.apache.sysds.runtime.controlprogram.caching.MatrixObject-java.lang.String-boolean-">createPartitionedMatrixObject</a>, <a href="../../../../../../org/apache/sysds/runtime/controlprogram/parfor/DataPartitioner.html#createReuseMatrixBlock-org.apache.sysds.runtime.controlprogram.ParForProgramBlock.PDataPartitionFormat-int-int-">createReuseMatrixBlock</a>, <a href="../../../../../../org/apache/sysds/runtime/controlprogram/parfor/DataPartitioner.html#disableBinaryCell--">disableBinaryCell</a></code></li> |
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| <h4>DataPartitionerLocal</h4> |
| <pre>public DataPartitionerLocal(<a href="../../../../../../org/apache/sysds/runtime/controlprogram/ParForProgramBlock.PartitionFormat.html" title="class in org.apache.sysds.runtime.controlprogram">ParForProgramBlock.PartitionFormat</a> dpf, |
| int par)</pre> |
| <div class="block">DataPartitionerLocal constructor.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>dpf</code> - data partitionformat</dd> |
| <dd><code>par</code> - -1 for serial otherwise number of threads, can be ignored by implementation</dd> |
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| <h4>writeBinaryBlockSequenceFileToHDFS</h4> |
| <pre>public void writeBinaryBlockSequenceFileToHDFS(org.apache.hadoop.mapred.JobConf job, |
| <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> dir, |
| <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> lpdir, |
| boolean threadsafe) |
| 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></pre> |
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| <h4>writeBinaryCellSequenceFileToHDFS</h4> |
| <pre>public void writeBinaryCellSequenceFileToHDFS(org.apache.hadoop.mapred.JobConf job, |
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| <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> lpdir) |
| 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></pre> |
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| <pre>public void writeTextCellFileToHDFS(org.apache.hadoop.mapred.JobConf job, |
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| <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> lpdir) |
| 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></pre> |
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