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| <div class="subTitle">org.apache.hawq.pxf.plugins.hive</div> |
| <h2 title="Class HiveInputFormatFragmenter" class="title">Class HiveInputFormatFragmenter</h2> |
| </div> |
| <div class="contentContainer"> |
| <ul class="inheritance"> |
| <li>java.lang.Object</li> |
| <li> |
| <ul class="inheritance"> |
| <li><a href="../../../../../../org/apache/hawq/pxf/api/utilities/Plugin.html" title="class in org.apache.hawq.pxf.api.utilities">org.apache.hawq.pxf.api.utilities.Plugin</a></li> |
| <li> |
| <ul class="inheritance"> |
| <li><a href="../../../../../../org/apache/hawq/pxf/api/Fragmenter.html" title="class in org.apache.hawq.pxf.api">org.apache.hawq.pxf.api.Fragmenter</a></li> |
| <li> |
| <ul class="inheritance"> |
| <li><a href="../../../../../../org/apache/hawq/pxf/plugins/hive/HiveDataFragmenter.html" title="class in org.apache.hawq.pxf.plugins.hive">org.apache.hawq.pxf.plugins.hive.HiveDataFragmenter</a></li> |
| <li> |
| <ul class="inheritance"> |
| <li>org.apache.hawq.pxf.plugins.hive.HiveInputFormatFragmenter</li> |
| </ul> |
| </li> |
| </ul> |
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| <div class="description"> |
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| <br> |
| <pre>public class <span class="typeNameLabel">HiveInputFormatFragmenter</span> |
| extends <a href="../../../../../../org/apache/hawq/pxf/plugins/hive/HiveDataFragmenter.html" title="class in org.apache.hawq.pxf.plugins.hive">HiveDataFragmenter</a></pre> |
| <div class="block">Specialized Hive fragmenter for RC and Text files tables. Unlike the |
| <a href="../../../../../../org/apache/hawq/pxf/plugins/hive/HiveDataFragmenter.html" title="class in org.apache.hawq.pxf.plugins.hive"><code>HiveDataFragmenter</code></a>, this class does not send the serde properties to |
| the accessor/resolvers. This is done to avoid memory explosion in Hawq. For |
| RC use together with <a href="../../../../../../org/apache/hawq/pxf/plugins/hive/HiveRCFileAccessor.html" title="class in org.apache.hawq.pxf.plugins.hive"><code>HiveRCFileAccessor</code></a>/ |
| <a href="../../../../../../org/apache/hawq/pxf/plugins/hive/HiveColumnarSerdeResolver.html" title="class in org.apache.hawq.pxf.plugins.hive"><code>HiveColumnarSerdeResolver</code></a>. For Text use together with |
| <a href="../../../../../../org/apache/hawq/pxf/plugins/hive/HiveLineBreakAccessor.html" title="class in org.apache.hawq.pxf.plugins.hive"><code>HiveLineBreakAccessor</code></a>/<a href="../../../../../../org/apache/hawq/pxf/plugins/hive/HiveStringPassResolver.html" title="class in org.apache.hawq.pxf.plugins.hive"><code>HiveStringPassResolver</code></a>. <br> |
| Given a Hive table and its partitions, divide the data into fragments (here a |
| data fragment is actually a HDFS file block) and return a list of them. Each |
| data fragment will contain the following information: |
| <ol> |
| <li>sourceName: full HDFS path to the data file that this data fragment is |
| part of</li> |
| <li>hosts: a list of the datanode machines that hold a replica of this block</li> |
| <li>userData: inputformat name, serde names and partition keys</li> |
| </ol></div> |
| </li> |
| </ul> |
| </div> |
| <div class="summary"> |
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| <!-- ======== NESTED CLASS SUMMARY ======== --> |
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| <h3>Nested Class Summary</h3> |
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| <caption><span>Nested Classes</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Class and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hawq/pxf/plugins/hive/HiveInputFormatFragmenter.PXF_HIVE_INPUT_FORMATS.html" title="enum in org.apache.hawq.pxf.plugins.hive">HiveInputFormatFragmenter.PXF_HIVE_INPUT_FORMATS</a></span></code> |
| <div class="block">Defines the Hive input formats currently supported in pxf</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hawq/pxf/plugins/hive/HiveInputFormatFragmenter.PXF_HIVE_SERDES.html" title="enum in org.apache.hawq.pxf.plugins.hive">HiveInputFormatFragmenter.PXF_HIVE_SERDES</a></span></code> |
| <div class="block">Defines the Hive serializers (serde classes) currently supported in pxf</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| <!-- =========== FIELD SUMMARY =========== --> |
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| <h3>Field Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Field Summary table, listing fields, and an explanation"> |
| <caption><span>Fields</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <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/hawq/pxf/plugins/hive/HiveInputFormatFragmenter.html#TOK_FILTER_DONE">TOK_FILTER_DONE</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hawq/pxf/plugins/hive/HiveInputFormatFragmenter.html#TOK_KEYS">TOK_KEYS</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hawq/pxf/plugins/hive/HiveInputFormatFragmenter.html#TOK_SERDE">TOK_SERDE</a></span></code> </td> |
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| <h3>Fields inherited from class org.apache.hawq.pxf.plugins.hive.<a href="../../../../../../org/apache/hawq/pxf/plugins/hive/HiveDataFragmenter.html" title="class in org.apache.hawq.pxf.plugins.hive">HiveDataFragmenter</a></h3> |
| <code><a href="../../../../../../org/apache/hawq/pxf/plugins/hive/HiveDataFragmenter.html#filterInFragmenter">filterInFragmenter</a></code></li> |
| </ul> |
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| <li class="blockList"><a name="fields.inherited.from.class.org.apache.hawq.pxf.api.Fragmenter"> |
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| </a> |
| <h3>Fields inherited from class org.apache.hawq.pxf.api.<a href="../../../../../../org/apache/hawq/pxf/api/Fragmenter.html" title="class in org.apache.hawq.pxf.api">Fragmenter</a></h3> |
| <code><a href="../../../../../../org/apache/hawq/pxf/api/Fragmenter.html#fragments">fragments</a></code></li> |
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| <h3>Fields inherited from class org.apache.hawq.pxf.api.utilities.<a href="../../../../../../org/apache/hawq/pxf/api/utilities/Plugin.html" title="class in org.apache.hawq.pxf.api.utilities">Plugin</a></h3> |
| <code><a href="../../../../../../org/apache/hawq/pxf/api/utilities/Plugin.html#inputData">inputData</a></code></li> |
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| </li> |
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| <!-- ======== CONSTRUCTOR SUMMARY ======== --> |
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| </a> |
| <h3>Constructor Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Constructor Summary table, listing constructors, and an explanation"> |
| <caption><span>Constructors</span><span class="tabEnd"> </span></caption> |
| <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/hawq/pxf/plugins/hive/HiveInputFormatFragmenter.html#HiveInputFormatFragmenter-org.apache.hawq.pxf.api.utilities.InputData-">HiveInputFormatFragmenter</a></span>(<a href="../../../../../../org/apache/hawq/pxf/api/utilities/InputData.html" title="class in org.apache.hawq.pxf.api.utilities">InputData</a> inputData)</code> |
| <div class="block">Constructs a HiveInputFormatFragmenter.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| <!-- ========== METHOD SUMMARY =========== --> |
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| <h3>Method Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> |
| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></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> |
| <th class="colLast" scope="col">Method and Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../../org/apache/hawq/pxf/api/FragmentsStats.html" title="class in org.apache.hawq.pxf.api">FragmentsStats</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hawq/pxf/plugins/hive/HiveInputFormatFragmenter.html#getFragmentsStats--">getFragmentsStats</a></span>()</code> |
| <div class="block">Returns statistics for Hive table.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>static java.lang.String[]</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hawq/pxf/plugins/hive/HiveInputFormatFragmenter.html#parseToks-org.apache.hawq.pxf.api.utilities.InputData-java.lang.String...-">parseToks</a></span>(<a href="../../../../../../org/apache/hawq/pxf/api/utilities/InputData.html" title="class in org.apache.hawq.pxf.api.utilities">InputData</a> input, |
| java.lang.String... supportedSerdes)</code> |
| <div class="block">Extracts the user data: |
| serde, partition keys and whether filter was included in fragmenter</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>static java.lang.String</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hawq/pxf/plugins/hive/HiveInputFormatFragmenter.html#toHiveType-org.apache.hawq.pxf.api.io.DataType-java.lang.String-">toHiveType</a></span>(<a href="../../../../../../org/apache/hawq/pxf/api/io/DataType.html" title="enum in org.apache.hawq.pxf.api.io">DataType</a> type, |
| java.lang.String name)</code> |
| <div class="block">Converts HAWQ type to hive type.</div> |
| </td> |
| </tr> |
| </table> |
| <ul class="blockList"> |
| <li class="blockList"><a name="methods.inherited.from.class.org.apache.hawq.pxf.plugins.hive.HiveDataFragmenter"> |
| <!-- --> |
| </a> |
| <h3>Methods inherited from class org.apache.hawq.pxf.plugins.hive.<a href="../../../../../../org/apache/hawq/pxf/plugins/hive/HiveDataFragmenter.html" title="class in org.apache.hawq.pxf.plugins.hive">HiveDataFragmenter</a></h3> |
| <code><a href="../../../../../../org/apache/hawq/pxf/plugins/hive/HiveDataFragmenter.html#getFragments--">getFragments</a>, <a href="../../../../../../org/apache/hawq/pxf/plugins/hive/HiveDataFragmenter.html#makeInputFormat-java.lang.String-org.apache.hadoop.mapred.JobConf-">makeInputFormat</a></code></li> |
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| <ul class="blockList"> |
| <li class="blockList"><a name="methods.inherited.from.class.org.apache.hawq.pxf.api.utilities.Plugin"> |
| <!-- --> |
| </a> |
| <h3>Methods inherited from class org.apache.hawq.pxf.api.utilities.<a href="../../../../../../org/apache/hawq/pxf/api/utilities/Plugin.html" title="class in org.apache.hawq.pxf.api.utilities">Plugin</a></h3> |
| <code><a href="../../../../../../org/apache/hawq/pxf/api/utilities/Plugin.html#isThreadSafe--">isThreadSafe</a></code></li> |
| </ul> |
| <ul class="blockList"> |
| <li class="blockList"><a name="methods.inherited.from.class.java.lang.Object"> |
| <!-- --> |
| </a> |
| <h3>Methods inherited from class java.lang.Object</h3> |
| <code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
| <div class="details"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <!-- ============ FIELD DETAIL =========== --> |
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| </a> |
| <h3>Field Detail</h3> |
| <a name="TOK_SERDE"> |
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| </a> |
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| <li class="blockList"> |
| <h4>TOK_SERDE</h4> |
| <pre>public static final int TOK_SERDE</pre> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../../constant-values.html#org.apache.hawq.pxf.plugins.hive.HiveInputFormatFragmenter.TOK_SERDE">Constant Field Values</a></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="TOK_KEYS"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>TOK_KEYS</h4> |
| <pre>public static final int TOK_KEYS</pre> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../../constant-values.html#org.apache.hawq.pxf.plugins.hive.HiveInputFormatFragmenter.TOK_KEYS">Constant Field Values</a></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="TOK_FILTER_DONE"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>TOK_FILTER_DONE</h4> |
| <pre>public static final int TOK_FILTER_DONE</pre> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../../constant-values.html#org.apache.hawq.pxf.plugins.hive.HiveInputFormatFragmenter.TOK_FILTER_DONE">Constant Field Values</a></dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="constructor.detail"> |
| <!-- --> |
| </a> |
| <h3>Constructor Detail</h3> |
| <a name="HiveInputFormatFragmenter-org.apache.hawq.pxf.api.utilities.InputData-"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>HiveInputFormatFragmenter</h4> |
| <pre>public HiveInputFormatFragmenter(<a href="../../../../../../org/apache/hawq/pxf/api/utilities/InputData.html" title="class in org.apache.hawq.pxf.api.utilities">InputData</a> inputData)</pre> |
| <div class="block">Constructs a HiveInputFormatFragmenter.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>inputData</code> - all input parameters coming from the client</dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| <!-- ============ METHOD DETAIL ========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="method.detail"> |
| <!-- --> |
| </a> |
| <h3>Method Detail</h3> |
| <a name="parseToks-org.apache.hawq.pxf.api.utilities.InputData-java.lang.String...-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>parseToks</h4> |
| <pre>public static java.lang.String[] parseToks(<a href="../../../../../../org/apache/hawq/pxf/api/utilities/InputData.html" title="class in org.apache.hawq.pxf.api.utilities">InputData</a> input, |
| java.lang.String... supportedSerdes) |
| throws <a href="../../../../../../org/apache/hawq/pxf/api/UserDataException.html" title="class in org.apache.hawq.pxf.api">UserDataException</a></pre> |
| <div class="block">Extracts the user data: |
| serde, partition keys and whether filter was included in fragmenter</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>input</code> - input data from client</dd> |
| <dd><code>supportedSerdes</code> - supported serde names</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>parsed tokens</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hawq/pxf/api/UserDataException.html" title="class in org.apache.hawq.pxf.api">UserDataException</a></code> - if user data contains unsupported serde |
| or wrong number of tokens</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="toHiveType-org.apache.hawq.pxf.api.io.DataType-java.lang.String-"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>toHiveType</h4> |
| <pre>public static java.lang.String toHiveType(<a href="../../../../../../org/apache/hawq/pxf/api/io/DataType.html" title="enum in org.apache.hawq.pxf.api.io">DataType</a> type, |
| java.lang.String name)</pre> |
| <div class="block">Converts HAWQ type to hive type. The supported mappings are:<ul> |
| <li><code>BOOLEAN -> boolean</code></li> |
| <li><code>SMALLINT -> smallint (tinyint is converted to smallint)</code></li> |
| <li><code>BIGINT -> bigint</code></li> |
| <li><code>TIMESTAMP, TIME -> timestamp</code></li> |
| <li><code>NUMERIC -> decimal</code></li> |
| <li><code>BYTEA -> binary</code></li> |
| <li><code>INTERGER -> int</code></li> |
| <li><code>TEXT -> string</code></li> |
| <li><code>REAL -> float</code></li> |
| <li><code>FLOAT8 -> double</code></li> |
| </ul> |
| All other types (both in HAWQ and in HIVE) are not supported.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>type</code> - HAWQ data type</dd> |
| <dd><code>name</code> - field name</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Hive type</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hawq/pxf/api/UnsupportedTypeException.html" title="class in org.apache.hawq.pxf.api">UnsupportedTypeException</a></code> - if type is not supported</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getFragmentsStats--"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>getFragmentsStats</h4> |
| <pre>public <a href="../../../../../../org/apache/hawq/pxf/api/FragmentsStats.html" title="class in org.apache.hawq.pxf.api">FragmentsStats</a> getFragmentsStats() |
| throws java.lang.Exception</pre> |
| <div class="block">Returns statistics for Hive table. Currently it's not implemented.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hawq/pxf/plugins/hive/HiveDataFragmenter.html#getFragmentsStats--">getFragmentsStats</a></code> in class <code><a href="../../../../../../org/apache/hawq/pxf/plugins/hive/HiveDataFragmenter.html" title="class in org.apache.hawq.pxf.plugins.hive">HiveDataFragmenter</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>default statistics</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code>java.lang.Exception</code> - if statistics cannot be gathered</dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
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