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| <div class="subTitle">org.apache.drill.exec.planner</div> |
| <h2 title="Interface PartitionDescriptor" class="title">Interface PartitionDescriptor</h2> |
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| <dt>All Superinterfaces:</dt> |
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| <dl> |
| <dt>All Known Implementing Classes:</dt> |
| <dd><a href="../../../../../org/apache/drill/exec/planner/AbstractPartitionDescriptor.html" title="class in org.apache.drill.exec.planner">AbstractPartitionDescriptor</a>, <a href="../../../../../org/apache/drill/exec/planner/FileSystemPartitionDescriptor.html" title="class in org.apache.drill.exec.planner">FileSystemPartitionDescriptor</a>, <a href="../../../../../org/apache/drill/exec/planner/sql/HivePartitionDescriptor.html" title="class in org.apache.drill.exec.planner.sql">HivePartitionDescriptor</a>, <a href="../../../../../org/apache/drill/exec/planner/ParquetPartitionDescriptor.html" title="class in org.apache.drill.exec.planner">ParquetPartitionDescriptor</a></dd> |
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| <pre>public interface <span class="typeNameLabel">PartitionDescriptor</span> |
| extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang">Iterable</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../org/apache/drill/exec/planner/PartitionLocation.html" title="interface in org.apache.drill.exec.planner">PartitionLocation</a>>></pre> |
| <div class="block">Interface used to describe partitions. Currently used by file system based |
| partitions and hive partitions</div> |
| </li> |
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| <h3>Field Summary</h3> |
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| <caption><span>Fields</span><span class="tabEnd"> </span></caption> |
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| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Field and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/exec/planner/PartitionDescriptor.html#PARTITION_BATCH_SIZE">PARTITION_BATCH_SIZE</a></span></code> </td> |
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| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Method and Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>org.apache.calcite.rel.core.TableScan</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/exec/planner/PartitionDescriptor.html#createTableScan-java.util.List-boolean-">createTableScan</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../org/apache/drill/exec/planner/PartitionLocation.html" title="interface in org.apache.drill.exec.planner">PartitionLocation</a>> newPartitions, |
| boolean wasAllPartitionsPruned)</code> |
| <div class="block">Create a new TableScan rel node, given the lists of new partitions or new files to SCAN.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>org.apache.calcite.rel.core.TableScan</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/exec/planner/PartitionDescriptor.html#createTableScan-java.util.List-org.apache.hadoop.fs.Path-boolean-org.apache.drill.exec.store.dfs.MetadataContext-">createTableScan</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../org/apache/drill/exec/planner/PartitionLocation.html" title="interface in org.apache.drill.exec.planner">PartitionLocation</a>> newPartitions, |
| org.apache.hadoop.fs.Path cacheFileRoot, |
| boolean wasAllPartitionsPruned, |
| <a href="../../../../../org/apache/drill/exec/store/dfs/MetadataContext.html" title="class in org.apache.drill.exec.store.dfs">MetadataContext</a> metaContext)</code> |
| <div class="block">Create a new TableScan rel node, given the lists of new partitions or new files to scan and a path |
| to a metadata cache file</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>org.apache.hadoop.fs.Path</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/exec/planner/PartitionDescriptor.html#getBaseTableLocation--">getBaseTableLocation</a></span>()</code> </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/exec/planner/PartitionDescriptor.html#getIdIfValid-java.lang.String-">getIdIfValid</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> name)</code> |
| <div class="block">Check to see if the name is a partition name.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/exec/planner/PartitionDescriptor.html#getMaxHierarchyLevel--">getMaxHierarchyLevel</a></span>()</code> |
| <div class="block">Maximum level of partition nesting/ hierarchy supported</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/exec/planner/PartitionDescriptor.html#getPartitionHierarchyIndex-java.lang.String-">getPartitionHierarchyIndex</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> partitionName)</code> |
| <div class="block">Get the hierarchy index of the given partition |
| For eg: if we have the partition laid out as follows |
| 1997/q1/jan |
| then getPartitionHierarchyIndex("jan") => 2</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/drill/common/types/TypeProtos.MajorType.html" title="class in org.apache.drill.common.types">TypeProtos.MajorType</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/exec/planner/PartitionDescriptor.html#getVectorType-org.apache.drill.common.expression.SchemaPath-org.apache.drill.exec.planner.physical.PlannerSettings-">getVectorType</a></span>(<a href="../../../../../org/apache/drill/common/expression/SchemaPath.html" title="class in org.apache.drill.common.expression">SchemaPath</a> column, |
| <a href="../../../../../org/apache/drill/exec/planner/physical/PlannerSettings.html" title="class in org.apache.drill.exec.planner.physical">PlannerSettings</a> plannerSettings)</code> |
| <div class="block">Method returns the Major type associated with the given column</div> |
| </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/exec/planner/PartitionDescriptor.html#isPartitionName-java.lang.String-">isPartitionName</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> name)</code> |
| <div class="block">Given a column name return boolean to indicate if its a partition column or not</div> |
| </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/exec/planner/PartitionDescriptor.html#populatePartitionVectors-org.apache.drill.exec.vector.ValueVector:A-java.util.List-java.util.BitSet-java.util.Map-">populatePartitionVectors</a></span>(<a href="../../../../../org/apache/drill/exec/vector/ValueVector.html" title="interface in org.apache.drill.exec.vector">ValueVector</a>[] vectors, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../org/apache/drill/exec/planner/PartitionLocation.html" title="interface in org.apache.drill.exec.planner">PartitionLocation</a>> partitions, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="class or interface in java.util">BitSet</a> partitionColumnBitSet, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>,<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>> fieldNameMap)</code> |
| <div class="block">Creates an in memory representation of all the partitions.</div> |
| </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/exec/planner/PartitionDescriptor.html#supportsMetadataCachePruning--">supportsMetadataCachePruning</a></span>()</code> </td> |
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| <h3>Methods inherited from interface java.lang.<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang">Iterable</a></h3> |
| <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true#forEach-java.util.function.Consumer-" title="class or interface in java.lang">forEach</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true#iterator--" title="class or interface in java.lang">iterator</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true#spliterator--" title="class or interface in java.lang">spliterator</a></code></li> |
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| <h4>PARTITION_BATCH_SIZE</h4> |
| <pre>static final int PARTITION_BATCH_SIZE</pre> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../constant-values.html#org.apache.drill.exec.planner.PartitionDescriptor.PARTITION_BATCH_SIZE">Constant Field Values</a></dd> |
| </dl> |
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| <h4>getPartitionHierarchyIndex</h4> |
| <pre>int getPartitionHierarchyIndex(<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> partitionName)</pre> |
| <div class="block">Get the hierarchy index of the given partition |
| For eg: if we have the partition laid out as follows |
| 1997/q1/jan |
| then getPartitionHierarchyIndex("jan") => 2</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>partitionName</code> - Partition name</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the index of specified partition name in the hierarchy</dd> |
| </dl> |
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| <h4>isPartitionName</h4> |
| <pre>boolean isPartitionName(<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> name)</pre> |
| <div class="block">Given a column name return boolean to indicate if its a partition column or not</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>name</code> - of Partition</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>true, if this is the partition name and vise versa.</dd> |
| </dl> |
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| <pre><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a> getIdIfValid(<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> name)</pre> |
| <div class="block">Check to see if the name is a partition name.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>name</code> - The field name you want to compare to partition names.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Return index if valid, otherwise return null;</dd> |
| </dl> |
| </li> |
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| <h4>getMaxHierarchyLevel</h4> |
| <pre>int getMaxHierarchyLevel()</pre> |
| <div class="block">Maximum level of partition nesting/ hierarchy supported</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>maximum supported level number of partition hierarchy</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="populatePartitionVectors-org.apache.drill.exec.vector.ValueVector:A-java.util.List-java.util.BitSet-java.util.Map-"> |
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| <h4>populatePartitionVectors</h4> |
| <pre>void populatePartitionVectors(<a href="../../../../../org/apache/drill/exec/vector/ValueVector.html" title="interface in org.apache.drill.exec.vector">ValueVector</a>[] vectors, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../org/apache/drill/exec/planner/PartitionLocation.html" title="interface in org.apache.drill.exec.planner">PartitionLocation</a>> partitions, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/BitSet.html?is-external=true" title="class or interface in java.util">BitSet</a> partitionColumnBitSet, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>,<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>> fieldNameMap)</pre> |
| <div class="block">Creates an in memory representation of all the partitions. For each level of partitioning we |
| will create a value vector which this method will populate for all the partitions with the values of the |
| partitioning key</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>vectors</code> - - Array of vectors in the container that need to be populated</dd> |
| <dd><code>partitions</code> - - List of all the partitions that exist in the table</dd> |
| <dd><code>partitionColumnBitSet</code> - - Partition columns selected in the query</dd> |
| <dd><code>fieldNameMap</code> - - Maps field ordinal to the field name</dd> |
| </dl> |
| </li> |
| </ul> |
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| <h4>getVectorType</h4> |
| <pre><a href="../../../../../org/apache/drill/common/types/TypeProtos.MajorType.html" title="class in org.apache.drill.common.types">TypeProtos.MajorType</a> getVectorType(<a href="../../../../../org/apache/drill/common/expression/SchemaPath.html" title="class in org.apache.drill.common.expression">SchemaPath</a> column, |
| <a href="../../../../../org/apache/drill/exec/planner/physical/PlannerSettings.html" title="class in org.apache.drill.exec.planner.physical">PlannerSettings</a> plannerSettings)</pre> |
| <div class="block">Method returns the Major type associated with the given column</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>column</code> - - column whose type should be determined</dd> |
| <dd><code>plannerSettings</code> - </dd> |
| </dl> |
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| <pre>org.apache.calcite.rel.core.TableScan createTableScan(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../org/apache/drill/exec/planner/PartitionLocation.html" title="interface in org.apache.drill.exec.planner">PartitionLocation</a>> newPartitions, |
| boolean wasAllPartitionsPruned) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</a></pre> |
| <div class="block">Create a new TableScan rel node, given the lists of new partitions or new files to SCAN.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>newPartitions</code> - </dd> |
| <dd><code>wasAllPartitionsPruned</code> - </dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</a></code></dd> |
| </dl> |
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| <h4>createTableScan</h4> |
| <pre>org.apache.calcite.rel.core.TableScan createTableScan(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../org/apache/drill/exec/planner/PartitionLocation.html" title="interface in org.apache.drill.exec.planner">PartitionLocation</a>> newPartitions, |
| org.apache.hadoop.fs.Path cacheFileRoot, |
| boolean wasAllPartitionsPruned, |
| <a href="../../../../../org/apache/drill/exec/store/dfs/MetadataContext.html" title="class in org.apache.drill.exec.store.dfs">MetadataContext</a> metaContext) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</a></pre> |
| <div class="block">Create a new TableScan rel node, given the lists of new partitions or new files to scan and a path |
| to a metadata cache file</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>newPartitions</code> - </dd> |
| <dd><code>cacheFileRoot</code> - </dd> |
| <dd><code>wasAllPartitionsPruned</code> - </dd> |
| <dd><code>metaContext</code> - </dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</a></code></dd> |
| </dl> |
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| <h4>supportsMetadataCachePruning</h4> |
| <pre>boolean supportsMetadataCachePruning()</pre> |
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| </a> |
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| <h4>getBaseTableLocation</h4> |
| <pre>org.apache.hadoop.fs.Path getBaseTableLocation()</pre> |
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