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| <div class="subTitle">org.apache.drill.exec.store.hive.readers</div> |
| <h2 title="Class HiveTextRecordReader" class="title">Class HiveTextRecordReader</h2> |
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| <ul class="inheritance"> |
| <li><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</a></li> |
| <li> |
| <ul class="inheritance"> |
| <li><a href="../../../../../../../org/apache/drill/exec/store/AbstractRecordReader.html" title="class in org.apache.drill.exec.store">org.apache.drill.exec.store.AbstractRecordReader</a></li> |
| <li> |
| <ul class="inheritance"> |
| <li><a href="../../../../../../../org/apache/drill/exec/store/hive/readers/HiveDefaultRecordReader.html" title="class in org.apache.drill.exec.store.hive.readers">org.apache.drill.exec.store.hive.readers.HiveDefaultRecordReader</a></li> |
| <li> |
| <ul class="inheritance"> |
| <li>org.apache.drill.exec.store.hive.readers.HiveTextRecordReader</li> |
| </ul> |
| </li> |
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| <br> |
| <pre>public class <span class="typeNameLabel">HiveTextRecordReader</span> |
| extends <a href="../../../../../../../org/apache/drill/exec/store/hive/readers/HiveDefaultRecordReader.html" title="class in org.apache.drill.exec.store.hive.readers">HiveDefaultRecordReader</a></pre> |
| <div class="block">Reading of Hive table stored in text format may require to skip few header/footer records. |
| This class extends default reader to add the functionality.</div> |
| </li> |
| </ul> |
| </div> |
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| <li class="blockList"><a name="fields.inherited.from.class.org.apache.drill.exec.store.hive.readers.HiveDefaultRecordReader"> |
| <!-- --> |
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| <h3>Fields inherited from class org.apache.drill.exec.store.hive.readers.<a href="../../../../../../../org/apache/drill/exec/store/hive/readers/HiveDefaultRecordReader.html" title="class in org.apache.drill.exec.store.hive.readers">HiveDefaultRecordReader</a></h3> |
| <code><a href="../../../../../../../org/apache/drill/exec/store/hive/readers/HiveDefaultRecordReader.html#empty">empty</a>, <a href="../../../../../../../org/apache/drill/exec/store/hive/readers/HiveDefaultRecordReader.html#logger">logger</a>, <a href="../../../../../../../org/apache/drill/exec/store/hive/readers/HiveDefaultRecordReader.html#mapredReader">mapredReader</a>, <a href="../../../../../../../org/apache/drill/exec/store/hive/readers/HiveDefaultRecordReader.html#outputWriter">outputWriter</a>, <a href="../../../../../../../org/apache/drill/exec/store/hive/readers/HiveDefaultRecordReader.html#partitionDeserializer">partitionDeserializer</a>, <a href="../../../../../../../org/apache/drill/exec/store/hive/readers/HiveDefaultRecordReader.html#partitionToTableSchemaConverter">partitionToTableSchemaConverter</a>, <a href="../../../../../../../org/apache/drill/exec/store/hive/readers/HiveDefaultRecordReader.html#TARGET_RECORD_COUNT">TARGET_RECORD_COUNT</a>, <a href="../../../../../../../org/apache/drill/exec/store/hive/readers/HiveDefaultRecordReader.html#valueHolder">valueHolder</a></code></li> |
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| <h3>Fields inherited from class org.apache.drill.exec.store.<a href="../../../../../../../org/apache/drill/exec/store/AbstractRecordReader.html" title="class in org.apache.drill.exec.store">AbstractRecordReader</a></h3> |
| <code><a href="../../../../../../../org/apache/drill/exec/store/AbstractRecordReader.html#DEFAULT_TEXT_COLS_TO_READ">DEFAULT_TEXT_COLS_TO_READ</a></code></li> |
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| <h3>Fields inherited from interface org.apache.drill.exec.store.<a href="../../../../../../../org/apache/drill/exec/store/RecordReader.html" title="interface in org.apache.drill.exec.store">RecordReader</a></h3> |
| <code><a href="../../../../../../../org/apache/drill/exec/store/RecordReader.html#ALLOCATOR_INITIAL_RESERVATION">ALLOCATOR_INITIAL_RESERVATION</a>, <a href="../../../../../../../org/apache/drill/exec/store/RecordReader.html#ALLOCATOR_MAX_RESERVATION">ALLOCATOR_MAX_RESERVATION</a></code></li> |
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| <tr> |
| <th class="colOne" scope="col">Constructor and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/store/hive/readers/HiveTextRecordReader.html#HiveTextRecordReader-org.apache.drill.exec.store.hive.HiveTableWithColumnCache-org.apache.drill.exec.store.hive.HivePartition-java.util.Collection-java.util.List-org.apache.drill.exec.ops.FragmentContext-org.apache.hadoop.hive.conf.HiveConf-org.apache.hadoop.security.UserGroupInformation-">HiveTextRecordReader</a></span>(<a href="../../../../../../../org/apache/drill/exec/store/hive/HiveTableWithColumnCache.html" title="class in org.apache.drill.exec.store.hive">HiveTableWithColumnCache</a> table, |
| <a href="../../../../../../../org/apache/drill/exec/store/hive/HivePartition.html" title="class in org.apache.drill.exec.store.hive">HivePartition</a> partition, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a><org.apache.hadoop.mapred.InputSplit> inputSplits, |
| <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/common/expression/SchemaPath.html" title="class in org.apache.drill.common.expression">SchemaPath</a>> projectedColumns, |
| <a href="../../../../../../../org/apache/drill/exec/ops/FragmentContext.html" title="interface in org.apache.drill.exec.ops">FragmentContext</a> context, |
| org.apache.hadoop.hive.conf.HiveConf hiveConf, |
| org.apache.hadoop.security.UserGroupInformation proxyUgi)</code> |
| <div class="block">Constructor matching super.</div> |
| </td> |
| </tr> |
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| </li> |
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| <h3>Method Summary</h3> |
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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="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
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| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>protected void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/store/hive/readers/HiveTextRecordReader.html#internalInit-java.util.Properties-">internalInit</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Properties.html?is-external=true" title="class or interface in java.util">Properties</a> hiveTableProperties)</code> |
| <div class="block">Default implementation does nothing, used to apply skip header/footer functionality</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/store/hive/readers/HiveTextRecordReader.html#next--">next</a></span>()</code> |
| <div class="block">Reads batch of records skipping footer rows when necessary.</div> |
| </td> |
| </tr> |
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| </a> |
| <h3>Methods inherited from class org.apache.drill.exec.store.hive.readers.<a href="../../../../../../../org/apache/drill/exec/store/hive/readers/HiveDefaultRecordReader.html" title="class in org.apache.drill.exec.store.hive.readers">HiveDefaultRecordReader</a></h3> |
| <code><a href="../../../../../../../org/apache/drill/exec/store/hive/readers/HiveDefaultRecordReader.html#close--">close</a>, <a href="../../../../../../../org/apache/drill/exec/store/hive/readers/HiveDefaultRecordReader.html#hasNextValue-java.lang.Object-">hasNextValue</a>, <a href="../../../../../../../org/apache/drill/exec/store/hive/readers/HiveDefaultRecordReader.html#readHiveRecordAndInsertIntoRecordBatch-java.lang.Object-">readHiveRecordAndInsertIntoRecordBatch</a>, <a href="../../../../../../../org/apache/drill/exec/store/hive/readers/HiveDefaultRecordReader.html#setup-org.apache.drill.exec.ops.OperatorContext-org.apache.drill.exec.physical.impl.OutputMutator-">setup</a></code></li> |
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| <h3>Methods inherited from class org.apache.drill.exec.store.<a href="../../../../../../../org/apache/drill/exec/store/AbstractRecordReader.html" title="class in org.apache.drill.exec.store">AbstractRecordReader</a></h3> |
| <code><a href="../../../../../../../org/apache/drill/exec/store/AbstractRecordReader.html#allocate-java.util.Map-">allocate</a>, <a href="../../../../../../../org/apache/drill/exec/store/AbstractRecordReader.html#getColumns--">getColumns</a>, <a href="../../../../../../../org/apache/drill/exec/store/AbstractRecordReader.html#getDefaultColumnsToRead--">getDefaultColumnsToRead</a>, <a href="../../../../../../../org/apache/drill/exec/store/AbstractRecordReader.html#hasNext--">hasNext</a>, <a href="../../../../../../../org/apache/drill/exec/store/AbstractRecordReader.html#isSkipQuery--">isSkipQuery</a>, <a href="../../../../../../../org/apache/drill/exec/store/AbstractRecordReader.html#isStarQuery--">isStarQuery</a>, <a href="../../../../../../../org/apache/drill/exec/store/AbstractRecordReader.html#setColumns-java.util.Collection-">setColumns</a>, <a href="../../../../../../../org/apache/drill/exec/store/AbstractRecordReader.html#toString--">toString</a>, <a href="../../../../../../../org/apache/drill/exec/store/AbstractRecordReader.html#transformColumns-java.util.Collection-">transformColumns</a></code></li> |
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| <h3>Methods inherited from class java.lang.<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3> |
| <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li> |
| </ul> |
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| <div class="details"> |
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| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
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| <li class="blockList"><a name="constructor.detail"> |
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| </a> |
| <h3>Constructor Detail</h3> |
| <a name="HiveTextRecordReader-org.apache.drill.exec.store.hive.HiveTableWithColumnCache-org.apache.drill.exec.store.hive.HivePartition-java.util.Collection-java.util.List-org.apache.drill.exec.ops.FragmentContext-org.apache.hadoop.hive.conf.HiveConf-org.apache.hadoop.security.UserGroupInformation-"> |
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| <h4>HiveTextRecordReader</h4> |
| <pre>public HiveTextRecordReader(<a href="../../../../../../../org/apache/drill/exec/store/hive/HiveTableWithColumnCache.html" title="class in org.apache.drill.exec.store.hive">HiveTableWithColumnCache</a> table, |
| <a href="../../../../../../../org/apache/drill/exec/store/hive/HivePartition.html" title="class in org.apache.drill.exec.store.hive">HivePartition</a> partition, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a><org.apache.hadoop.mapred.InputSplit> inputSplits, |
| <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/common/expression/SchemaPath.html" title="class in org.apache.drill.common.expression">SchemaPath</a>> projectedColumns, |
| <a href="../../../../../../../org/apache/drill/exec/ops/FragmentContext.html" title="interface in org.apache.drill.exec.ops">FragmentContext</a> context, |
| org.apache.hadoop.hive.conf.HiveConf hiveConf, |
| org.apache.hadoop.security.UserGroupInformation proxyUgi)</pre> |
| <div class="block">Constructor matching super.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>table</code> - metadata about Hive table being read</dd> |
| <dd><code>partition</code> - holder of metadata about table partitioning</dd> |
| <dd><code>inputSplits</code> - input splits for reading data from distributed storage</dd> |
| <dd><code>projectedColumns</code> - target columns for scan</dd> |
| <dd><code>context</code> - fragmentContext of fragment</dd> |
| <dd><code>hiveConf</code> - Hive configuration</dd> |
| <dd><code>proxyUgi</code> - user/group info to be used for initialization</dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
| </ul> |
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| <h3>Method Detail</h3> |
| <a name="internalInit-java.util.Properties-"> |
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| <h4>internalInit</h4> |
| <pre>protected void internalInit(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Properties.html?is-external=true" title="class or interface in java.util">Properties</a> hiveTableProperties)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../../../../../../../org/apache/drill/exec/store/hive/readers/HiveDefaultRecordReader.html#internalInit-java.util.Properties-">HiveDefaultRecordReader</a></code></span></div> |
| <div class="block">Default implementation does nothing, used to apply skip header/footer functionality</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="../../../../../../../org/apache/drill/exec/store/hive/readers/HiveDefaultRecordReader.html#internalInit-java.util.Properties-">internalInit</a></code> in class <code><a href="../../../../../../../org/apache/drill/exec/store/hive/readers/HiveDefaultRecordReader.html" title="class in org.apache.drill.exec.store.hive.readers">HiveDefaultRecordReader</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>hiveTableProperties</code> - hive table properties</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="next--"> |
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| </a> |
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| <h4>next</h4> |
| <pre>public int next()</pre> |
| <div class="block">Reads batch of records skipping footer rows when necessary.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../../org/apache/drill/exec/store/RecordReader.html#next--">next</a></code> in interface <code><a href="../../../../../../../org/apache/drill/exec/store/RecordReader.html" title="interface in org.apache.drill.exec.store">RecordReader</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="../../../../../../../org/apache/drill/exec/store/hive/readers/HiveDefaultRecordReader.html#next--">next</a></code> in class <code><a href="../../../../../../../org/apache/drill/exec/store/hive/readers/HiveDefaultRecordReader.html" title="class in org.apache.drill.exec.store.hive.readers">HiveDefaultRecordReader</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>count of read records</dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
| </div> |
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