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<div class="subTitle">org.apache.spark.sql.hive</div>
<h2 title="Class HiveContext" class="title">Class HiveContext</h2>
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<pre>public class <span class="strong">HiveContext</span>
extends <a href="../../../../../org/apache/spark/sql/SQLContext.html" title="class in org.apache.spark.sql">SQLContext</a>
implements <a href="../../../../../org/apache/spark/Logging.html" title="interface in org.apache.spark">Logging</a></pre>
<div class="block">An instance of the Spark SQL execution engine that integrates with data stored in Hive.
Configuration for Hive is read from hive-site.xml on the classpath.
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<dl><dt><span class="strong">Since:</span></dt>
<dd>1.0.0</dd>
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<td class="colFirst"><code>protected class </code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/sql/hive/HiveContext.QueryExecution.html" title="class in org.apache.spark.sql.hive">HiveContext.QueryExecution</a></strong></code>
<div class="block">Extends QueryExecution with hive specific features.</div>
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<td class="colFirst"><code>protected class </code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/sql/hive/HiveContext.SQLSession.html" title="class in org.apache.spark.sql.hive">HiveContext.SQLSession</a></strong></code> </td>
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<code><a href="../../../../../org/apache/spark/sql/SQLContext.implicits$.html" title="class in org.apache.spark.sql">SQLContext.implicits$</a>, <a href="../../../../../org/apache/spark/sql/SQLContext.SparkPlanner.html" title="class in org.apache.spark.sql">SQLContext.SparkPlanner</a></code></li>
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<td class="colOne"><code><strong><a href="../../../../../org/apache/spark/sql/hive/HiveContext.html#HiveContext(org.apache.spark.SparkContext)">HiveContext</a></strong>(<a href="../../../../../org/apache/spark/SparkContext.html" title="class in org.apache.spark">SparkContext</a> sc)</code> </td>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/sql/hive/HiveContext.html#analyze(java.lang.String)">analyze</a></strong>(java.lang.String tableName)</code>
<div class="block">Analyzes the given table in the current database to generate statistics, which will be
used in query optimizations.</div>
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<td class="colFirst"><code>protected org.apache.spark.sql.catalyst.analysis.Analyzer</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/sql/hive/HiveContext.html#analyzer()">analyzer</a></strong>()</code> </td>
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<td class="colFirst"><code>protected org.apache.spark.sql.hive.HiveMetastoreCatalog</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/sql/hive/HiveContext.html#catalog()">catalog</a></strong>()</code> </td>
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<td class="colFirst"><code>protected scala.collection.immutable.Map<java.lang.String,java.lang.String></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/sql/hive/HiveContext.html#configure()">configure</a></strong>()</code>
<div class="block">Overridden by child classes that need to set configuration before the client init.</div>
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<td class="colFirst"><code>static <any></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/sql/hive/HiveContext.html#CONVERT_CTAS()">CONVERT_CTAS</a></strong>()</code> </td>
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<td class="colFirst"><code>static <any></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/sql/hive/HiveContext.html#CONVERT_METASTORE_PARQUET_WITH_SCHEMA_MERGING()">CONVERT_METASTORE_PARQUET_WITH_SCHEMA_MERGING</a></strong>()</code> </td>
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<tr class="altColor">
<td class="colFirst"><code>static <any></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/sql/hive/HiveContext.html#CONVERT_METASTORE_PARQUET()">CONVERT_METASTORE_PARQUET</a></strong>()</code> </td>
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<td class="colFirst"><code>protected boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/sql/hive/HiveContext.html#convertCTAS()">convertCTAS</a></strong>()</code>
<div class="block">When true, a table created by a Hive CTAS statement (no USING clause) will be
converted to a data source table, using the data source set by spark.sql.sources.default.</div>
</td>
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<td class="colFirst"><code>protected boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/sql/hive/HiveContext.html#convertMetastoreParquet()">convertMetastoreParquet</a></strong>()</code>
<div class="block">When true, enables an experimental feature where metastore tables that use the parquet SerDe
are automatically converted to use the Spark SQL parquet table scan, instead of the Hive
SerDe.</div>
</td>
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<td class="colFirst"><code>protected boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/sql/hive/HiveContext.html#convertMetastoreParquetWithSchemaMerging()">convertMetastoreParquetWithSchemaMerging</a></strong>()</code>
<div class="block">When true, also tries to merge possibly different but compatible Parquet schemas in different
Parquet data files.</div>
</td>
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<td class="colFirst"><code>protected <a href="../../../../../org/apache/spark/sql/hive/HiveContext.SQLSession.html" title="class in org.apache.spark.sql.hive">HiveContext.SQLSession</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/sql/hive/HiveContext.html#createSession()">createSession</a></strong>()</code> </td>
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<tr class="rowColor">
<td class="colFirst"><code>protected java.lang.String</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/sql/hive/HiveContext.html#dialectClassName()">dialectClassName</a></strong>()</code> </td>
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<tr class="altColor">
<td class="colFirst"><code>protected <a href="../../../../../org/apache/spark/sql/hive/HiveContext.QueryExecution.html" title="class in org.apache.spark.sql.hive">HiveContext.QueryExecution</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/sql/hive/HiveContext.html#executePlan(org.apache.spark.sql.catalyst.plans.logical.LogicalPlan)">executePlan</a></strong>(org.apache.spark.sql.catalyst.plans.logical.LogicalPlan plan)</code> </td>
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<tr class="rowColor">
<td class="colFirst"><code>protected org.apache.spark.sql.hive.client.ClientWrapper</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/sql/hive/HiveContext.html#executionHive()">executionHive</a></strong>()</code>
<div class="block">The copy of the hive client that is used for execution.</div>
</td>
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<td class="colFirst"><code>protected org.apache.spark.sql.catalyst.analysis.FunctionRegistry</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/sql/hive/HiveContext.html#functionRegistry()">functionRegistry</a></strong>()</code> </td>
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<td class="colFirst"><code>static <any></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/sql/hive/HiveContext.html#HIVE_METASTORE_BARRIER_PREFIXES()">HIVE_METASTORE_BARRIER_PREFIXES</a></strong>()</code> </td>
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<tr class="altColor">
<td class="colFirst"><code>static <any></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/sql/hive/HiveContext.html#HIVE_METASTORE_JARS()">HIVE_METASTORE_JARS</a></strong>()</code> </td>
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<tr class="rowColor">
<td class="colFirst"><code>static <any></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/sql/hive/HiveContext.html#HIVE_METASTORE_SHARED_PREFIXES()">HIVE_METASTORE_SHARED_PREFIXES</a></strong>()</code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <any></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/sql/hive/HiveContext.html#HIVE_METASTORE_VERSION()">HIVE_METASTORE_VERSION</a></strong>()</code> </td>
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<tr class="rowColor">
<td class="colFirst"><code>static <any></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/sql/hive/HiveContext.html#HIVE_THRIFT_SERVER_ASYNC()">HIVE_THRIFT_SERVER_ASYNC</a></strong>()</code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected org.apache.hadoop.hive.conf.HiveConf</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/sql/hive/HiveContext.html#hiveconf()">hiveconf</a></strong>()</code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/sql/hive/HiveContext.html#hiveExecutionVersion()">hiveExecutionVersion</a></strong>()</code>
<div class="block">The version of hive used internally by Spark SQL.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected scala.collection.Seq<java.lang.String></code></td>
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<div class="block">A comma separated list of class prefixes that should explicitly be reloaded for each version
of Hive that Spark SQL is communicating with.</div>
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<tr class="rowColor">
<td class="colFirst"><code>protected java.lang.String</code></td>
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<div class="block">The location of the jars that should be used to instantiate the HiveMetastoreClient.</div>
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<tr class="altColor">
<td class="colFirst"><code>protected scala.collection.Seq<java.lang.String></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/sql/hive/HiveContext.html#hiveMetastoreSharedPrefixes()">hiveMetastoreSharedPrefixes</a></strong>()</code>
<div class="block">A comma separated list of class prefixes that should be loaded using the classloader that
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<tr class="rowColor">
<td class="colFirst"><code>protected java.lang.String</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/spark/sql/hive/HiveContext.html#hiveMetastoreVersion()">hiveMetastoreVersion</a></strong>()</code>
<div class="block">The version of the hive client that will be used to communicate with the metastore.</div>
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<tr class="altColor">
<td class="colFirst"><code>protected boolean</code></td>
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<tr class="rowColor">
<td class="colFirst"><code>protected void</code></td>
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<tr class="altColor">
<td class="colFirst"><code>protected org.apache.spark.sql.hive.client.ClientInterface</code></td>
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<div class="block">The copy of the Hive client that is used to retrieve metadata from the Hive MetaStore.</div>
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<tr class="rowColor">
<td class="colFirst"><code>static scala.collection.immutable.Map<java.lang.String,java.lang.String></code></td>
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<td class="colFirst"><code>protected org.apache.spark.sql.catalyst.plans.logical.LogicalPlan</code></td>
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<td class="colFirst"><code>protected <a href="../../../../../org/apache/spark/sql/SQLContext.SparkPlanner.html" title="class in org.apache.spark.sql">SQLContext.SparkPlanner</a></code></td>
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<td class="colFirst"><code>protected static scala.collection.Seq<org.apache.spark.sql.types.AtomicType></code></td>
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<td class="colFirst"><code>void</code></td>
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<td class="colFirst"><code>protected scala.collection.Seq<java.lang.String></code></td>
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<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
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java.lang.String value)</code>
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<td class="colFirst"><code>protected org.apache.hadoop.hive.ql.parse.VariableSubstitution</code></td>
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<td class="colFirst"><code>protected static java.lang.String</code></td>
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<code><a href="../../../../../org/apache/spark/Logging.html#initializeIfNecessary()">initializeIfNecessary</a>, <a href="../../../../../org/apache/spark/Logging.html#initializeLogging()">initializeLogging</a>, <a href="../../../../../org/apache/spark/Logging.html#isTraceEnabled()">isTraceEnabled</a>, <a href="../../../../../org/apache/spark/Logging.html#log_()">log_</a>, <a href="../../../../../org/apache/spark/Logging.html#log()">log</a>, <a href="../../../../../org/apache/spark/Logging.html#logDebug(scala.Function0)">logDebug</a>, <a href="../../../../../org/apache/spark/Logging.html#logDebug(scala.Function0, java.lang.Throwable)">logDebug</a>, <a href="../../../../../org/apache/spark/Logging.html#logError(scala.Function0)">logError</a>, <a href="../../../../../org/apache/spark/Logging.html#logError(scala.Function0, java.lang.Throwable)">logError</a>, <a href="../../../../../org/apache/spark/Logging.html#logInfo(scala.Function0)">logInfo</a>, <a href="../../../../../org/apache/spark/Logging.html#logInfo(scala.Function0, java.lang.Throwable)">logInfo</a>, <a href="../../../../../org/apache/spark/Logging.html#logName()">logName</a>, <a href="../../../../../org/apache/spark/Logging.html#logTrace(scala.Function0)">logTrace</a>, <a href="../../../../../org/apache/spark/Logging.html#logTrace(scala.Function0, java.lang.Throwable)">logTrace</a>, <a href="../../../../../org/apache/spark/Logging.html#logWarning(scala.Function0)">logWarning</a>, <a href="../../../../../org/apache/spark/Logging.html#logWarning(scala.Function0, java.lang.Throwable)">logWarning</a></code></li>
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<pre>public static java.lang.String hiveExecutionVersion()</pre>
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is specified (no ROW FORMAT SERDE clause).
- The CTAS statement specifies SequenceFile (STORED AS SEQUENCEFILE) as the file format
and no SerDe is specified (no ROW FORMAT SERDE clause).</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>(undocumented)</dd></dl>
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<pre>protected java.lang.String hiveMetastoreVersion()</pre>
<div class="block">The version of the hive client that will be used to communicate with the metastore. Note that
this does not necessarily need to be the same version of Hive that is used internally by
Spark SQL for execution.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>(undocumented)</dd></dl>
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<pre>protected java.lang.String hiveMetastoreJars()</pre>
<div class="block">The location of the jars that should be used to instantiate the HiveMetastoreClient. This
property can be one of three options:
- a classpath in the standard format for both hive and hadoop.
- builtin - attempt to discover the jars that were used to load Spark SQL and use those. This
option is only valid when using the execution version of Hive.
- maven - download the correct version of hive on demand from maven.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>(undocumented)</dd></dl>
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<pre>protected scala.collection.Seq<java.lang.String> hiveMetastoreSharedPrefixes()</pre>
<div class="block">A comma separated list of class prefixes that should be loaded using the classloader that
is shared between Spark SQL and a specific version of Hive. An example of classes that should
be shared is JDBC drivers that are needed to talk to the metastore. Other classes that need
to be shared are those that interact with classes that are already shared. For example,
custom appenders that are used by log4j.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>(undocumented)</dd></dl>
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<pre>protected scala.collection.Seq<java.lang.String> hiveMetastoreBarrierPrefixes()</pre>
<div class="block">A comma separated list of class prefixes that should explicitly be reloaded for each version
of Hive that Spark SQL is communicating with. For example, Hive UDFs that are declared in a
prefix that typically would be shared (i.e. org.apache.spark.*)</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>(undocumented)</dd></dl>
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<pre>protected boolean hiveThriftServerAsync()</pre>
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<pre>protected org.apache.hadoop.hive.ql.parse.VariableSubstitution substitutor()</pre>
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<pre>protected org.apache.spark.sql.hive.client.ClientWrapper executionHive()</pre>
<div class="block">The copy of the hive client that is used for execution. Currently this must always be
Hive 13 as this is the version of Hive that is packaged with Spark SQL. This copy of the
client is used for execution related tasks like registering temporary functions or ensuring
that the ThreadLocal SessionState is correctly populated. This copy of Hive is *not* used
for storing persistent metadata, and only point to a dummy metastore in a temporary directory.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>(undocumented)</dd></dl>
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<pre>protected org.apache.spark.sql.hive.client.ClientInterface metadataHive()</pre>
<div class="block">The copy of the Hive client that is used to retrieve metadata from the Hive MetaStore.
The version of the Hive client that is used here must match the metastore that is configured
in the hive-site.xml file.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>(undocumented)</dd></dl>
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<pre>protected org.apache.spark.sql.catalyst.plans.logical.LogicalPlan parseSql(java.lang.String sql)</pre>
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<dt><strong>Overrides:</strong></dt>
<dd><code><a href="../../../../../org/apache/spark/sql/SQLContext.html#parseSql(java.lang.String)">parseSql</a></code> in class <code><a href="../../../../../org/apache/spark/sql/SQLContext.html" title="class in org.apache.spark.sql">SQLContext</a></code></dd>
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<pre>protected <a href="../../../../../org/apache/spark/sql/hive/HiveContext.QueryExecution.html" title="class in org.apache.spark.sql.hive">HiveContext.QueryExecution</a> executePlan(org.apache.spark.sql.catalyst.plans.logical.LogicalPlan plan)</pre>
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<dt><strong>Overrides:</strong></dt>
<dd><code><a href="../../../../../org/apache/spark/sql/SQLContext.html#executePlan(org.apache.spark.sql.catalyst.plans.logical.LogicalPlan)">executePlan</a></code> in class <code><a href="../../../../../org/apache/spark/sql/SQLContext.html" title="class in org.apache.spark.sql">SQLContext</a></code></dd>
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<pre>public void refreshTable(java.lang.String tableName)</pre>
<div class="block">Invalidate and refresh all the cached the metadata of the given table. For performance reasons,
Spark SQL or the external data source library it uses might cache certain metadata about a
table, such as the location of blocks. When those change outside of Spark SQL, users should
call this function to invalidate the cache.
<p></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>tableName</code> - (undocumented)</dd><dt><span class="strong">Since:</span></dt>
<dd>1.3.0</dd></dl>
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<pre>protected void invalidateTable(java.lang.String tableName)</pre>
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<pre>public void analyze(java.lang.String tableName)</pre>
<div class="block">Analyzes the given table in the current database to generate statistics, which will be
used in query optimizations.
<p>
Right now, it only supports Hive tables and it only updates the size of a Hive table
in the Hive metastore.
<p></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>tableName</code> - (undocumented)</dd><dt><span class="strong">Since:</span></dt>
<dd>1.2.0</dd></dl>
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<h4>hiveconf</h4>
<pre>protected org.apache.hadoop.hive.conf.HiveConf hiveconf()</pre>
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<pre>public void setConf(java.lang.String key,
java.lang.String value)</pre>
<div class="block"><strong>Description copied from class: <code><a href="../../../../../org/apache/spark/sql/SQLContext.html#setConf(java.lang.String, java.lang.String)">SQLContext</a></code></strong></div>
<div class="block">Set the given Spark SQL configuration property.
<p></div>
<dl>
<dt><strong>Overrides:</strong></dt>
<dd><code><a href="../../../../../org/apache/spark/sql/SQLContext.html#setConf(java.lang.String, java.lang.String)">setConf</a></code> in class <code><a href="../../../../../org/apache/spark/sql/SQLContext.html" title="class in org.apache.spark.sql">SQLContext</a></code></dd>
<dt><span class="strong">Parameters:</span></dt><dd><code>key</code> - (undocumented)</dd><dd><code>value</code> - (undocumented)</dd></dl>
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<pre>protected org.apache.spark.sql.hive.HiveMetastoreCatalog catalog()</pre>
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<dt><strong>Overrides:</strong></dt>
<dd><code><a href="../../../../../org/apache/spark/sql/SQLContext.html#catalog()">catalog</a></code> in class <code><a href="../../../../../org/apache/spark/sql/SQLContext.html" title="class in org.apache.spark.sql">SQLContext</a></code></dd>
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<pre>protected org.apache.spark.sql.catalyst.analysis.FunctionRegistry functionRegistry()</pre>
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<dd><code><a href="../../../../../org/apache/spark/sql/SQLContext.html#functionRegistry()">functionRegistry</a></code> in class <code><a href="../../../../../org/apache/spark/sql/SQLContext.html" title="class in org.apache.spark.sql">SQLContext</a></code></dd>
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<pre>protected org.apache.spark.sql.catalyst.analysis.Analyzer analyzer()</pre>
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<dd><code><a href="../../../../../org/apache/spark/sql/SQLContext.html#analyzer()">analyzer</a></code> in class <code><a href="../../../../../org/apache/spark/sql/SQLContext.html" title="class in org.apache.spark.sql">SQLContext</a></code></dd>
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<pre>protected <a href="../../../../../org/apache/spark/sql/hive/HiveContext.SQLSession.html" title="class in org.apache.spark.sql.hive">HiveContext.SQLSession</a> createSession()</pre>
<dl>
<dt><strong>Overrides:</strong></dt>
<dd><code><a href="../../../../../org/apache/spark/sql/SQLContext.html#createSession()">createSession</a></code> in class <code><a href="../../../../../org/apache/spark/sql/SQLContext.html" title="class in org.apache.spark.sql">SQLContext</a></code></dd>
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<pre>protected scala.collection.immutable.Map<java.lang.String,java.lang.String> configure()</pre>
<div class="block">Overridden by child classes that need to set configuration before the client init.</div>
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<pre>protected java.lang.String dialectClassName()</pre>
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<dd><code><a href="../../../../../org/apache/spark/sql/SQLContext.html#dialectClassName()">dialectClassName</a></code> in class <code><a href="../../../../../org/apache/spark/sql/SQLContext.html" title="class in org.apache.spark.sql">SQLContext</a></code></dd>
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<pre>protected scala.collection.Seq<java.lang.String> runSqlHive(java.lang.String sql)</pre>
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<pre>protected <a href="../../../../../org/apache/spark/sql/SQLContext.SparkPlanner.html" title="class in org.apache.spark.sql">SQLContext.SparkPlanner</a> planner()</pre>
<dl>
<dt><strong>Overrides:</strong></dt>
<dd><code><a href="../../../../../org/apache/spark/sql/SQLContext.html#planner()">planner</a></code> in class <code><a href="../../../../../org/apache/spark/sql/SQLContext.html" title="class in org.apache.spark.sql">SQLContext</a></code></dd>
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