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| <table class="typeSummary" border="0" cellpadding="3" cellspacing="0" summary="Interface Summary table, listing interfaces, and an explanation"> |
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| <tr> |
| <th class="colFirst" scope="col">Interface</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tbody> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/drill/exec/ops/BufferManager.html" title="interface in org.apache.drill.exec.ops">BufferManager</a></td> |
| <td class="colLast"> |
| <div class="block">Manages a list of <a href="../../../../../io/netty/buffer/DrillBuf.html" title="class in io.netty.buffer"><code>DrillBuf</code></a>s that can be reallocated as needed.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/drill/exec/ops/Consumer.html" title="interface in org.apache.drill.exec.ops">Consumer</a><T></td> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/drill/exec/ops/ExchangeFragmentContext.html" title="interface in org.apache.drill.exec.ops">ExchangeFragmentContext</a></td> |
| <td class="colLast"> |
| <div class="block">This provides the resources required by an exchange operator.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/drill/exec/ops/ExecutorFragmentContext.html" title="interface in org.apache.drill.exec.ops">ExecutorFragmentContext</a></td> |
| <td class="colLast"> |
| <div class="block">The context that is used by a Drillbit in classes like the |
| <a href="../../../../../org/apache/drill/exec/work/fragment/FragmentExecutor.html" title="class in org.apache.drill.exec.work.fragment"><code>FragmentExecutor</code></a>.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/drill/exec/ops/FragmentContext.html" title="interface in org.apache.drill.exec.ops">FragmentContext</a></td> |
| <td class="colLast"> |
| <div class="block">Provides the resources required by a non-exchange operator to execute.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/drill/exec/ops/FragmentContext.ExecutorState.html" title="interface in org.apache.drill.exec.ops">FragmentContext.ExecutorState</a></td> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/drill/exec/ops/FragmentContextInterface.html" title="interface in org.apache.drill.exec.ops">FragmentContextInterface</a></td> |
| <td class="colLast"> |
| <div class="block">Fragment context interface: separates implementation from definition.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/drill/exec/ops/MetricDef.html" title="interface in org.apache.drill.exec.ops">MetricDef</a></td> |
| <td class="colLast"> |
| <div class="block">Interface that defines a metric.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/drill/exec/ops/OperatorContext.html" title="interface in org.apache.drill.exec.ops">OperatorContext</a></td> |
| <td class="colLast"> |
| <div class="block">Per-operator services available for operator implementations.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/drill/exec/ops/OperatorStatReceiver.html" title="interface in org.apache.drill.exec.ops">OperatorStatReceiver</a></td> |
| <td class="colLast"> |
| <div class="block">Interface for updating a statistic.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/drill/exec/ops/OptimizerRulesContext.html" title="interface in org.apache.drill.exec.ops">OptimizerRulesContext</a></td> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/drill/exec/ops/RootFragmentContext.html" title="interface in org.apache.drill.exec.ops">RootFragmentContext</a></td> |
| <td class="colLast"> |
| <div class="block">Provides services needed by the <a href="../../../../../org/apache/drill/exec/work/fragment/FragmentExecutor.html" title="class in org.apache.drill.exec.work.fragment"><code>FragmentExecutor</code></a>.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/drill/exec/ops/UdfUtilities.html" title="interface in org.apache.drill.exec.ops">UdfUtilities</a></td> |
| <td class="colLast"> |
| <div class="block">Defines the query state and shared resources available to UDFs through |
| injectables.</div> |
| </td> |
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| <caption><span>Class Summary</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Class</th> |
| <th class="colLast" scope="col">Description</th> |
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| <td class="colFirst"><a href="../../../../../org/apache/drill/exec/ops/AccountingDataTunnel.html" title="class in org.apache.drill.exec.ops">AccountingDataTunnel</a></td> |
| <td class="colLast"> |
| <div class="block">Wrapper around a <a href="../../../../../org/apache/drill/exec/rpc/data/DataTunnel.html" title="class in org.apache.drill.exec.rpc.data"><code>DataTunnel</code></a> that tracks the status of batches sent to |
| to other Drillbits.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/drill/exec/ops/AccountingUserConnection.html" title="class in org.apache.drill.exec.ops">AccountingUserConnection</a></td> |
| <td class="colLast"> |
| <div class="block">Wrapper around a <a href="../../../../../org/apache/drill/exec/rpc/UserClientConnection.html" title="interface in org.apache.drill.exec.rpc"><code>UserClientConnection</code></a> that tracks the status of batches |
| sent to User.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/drill/exec/ops/BaseFragmentContext.html" title="class in org.apache.drill.exec.ops">BaseFragmentContext</a></td> |
| <td class="colLast"> |
| <div class="block">Common implementation for both the test and production versions |
| of the fragment context.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/drill/exec/ops/BaseOperatorContext.html" title="class in org.apache.drill.exec.ops">BaseOperatorContext</a></td> |
| <td class="colLast"> |
| <div class="block">Implementation of <a href="../../../../../org/apache/drill/exec/ops/OperatorContext.html" title="interface in org.apache.drill.exec.ops"><code>OperatorContext</code></a> that provides services |
| needed by most run-time operators.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/drill/exec/ops/BufferManagerImpl.html" title="class in org.apache.drill.exec.ops">BufferManagerImpl</a></td> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/drill/exec/ops/ContextInformation.html" title="class in org.apache.drill.exec.ops">ContextInformation</a></td> |
| <td class="colLast"> |
| <div class="block">Provides query context information (such as query start time, query user, default schema etc.) for UDFs.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/drill/exec/ops/DataTunnelStatusHandler.html" title="class in org.apache.drill.exec.ops">DataTunnelStatusHandler</a></td> |
| <td class="colLast"> |
| <div class="block">Listener that keeps track of the status of batches sent, and updates the SendingAccountor when status is received |
| for each batch</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/drill/exec/ops/FragmentContextImpl.html" title="class in org.apache.drill.exec.ops">FragmentContextImpl</a></td> |
| <td class="colLast"> |
| <div class="block">This is the core Context which implements all the Context interfaces: |
| |
| |
| <a href="../../../../../org/apache/drill/exec/ops/FragmentContext.html" title="interface in org.apache.drill.exec.ops"><code>FragmentContext</code></a>: A context provided to non-exchange |
| operators. |
| <a href="../../../../../org/apache/drill/exec/ops/ExchangeFragmentContext.html" title="interface in org.apache.drill.exec.ops"><code>ExchangeFragmentContext</code></a>: A context provided to exchange |
| operators. |
| <a href="../../../../../org/apache/drill/exec/ops/RootFragmentContext.html" title="interface in org.apache.drill.exec.ops"><code>RootFragmentContext</code></a>: A context provided to fragment roots. |
| <a href="../../../../../org/apache/drill/exec/ops/ExecutorFragmentContext.html" title="interface in org.apache.drill.exec.ops"><code>ExecutorFragmentContext</code></a>: A context used by the Drillbit. |
| |
| |
| The interfaces above expose resources to varying degrees.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/drill/exec/ops/FragmentStats.html" title="class in org.apache.drill.exec.ops">FragmentStats</a></td> |
| <td class="colLast"> |
| <div class="block">Holds statistics of a particular (minor) fragment.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/drill/exec/ops/OperatorMetricRegistry.html" title="class in org.apache.drill.exec.ops">OperatorMetricRegistry</a></td> |
| <td class="colLast"> |
| <div class="block">Registry of operator metrics.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/drill/exec/ops/OperatorStats.html" title="class in org.apache.drill.exec.ops">OperatorStats</a></td> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/drill/exec/ops/OperatorUtilities.html" title="class in org.apache.drill.exec.ops">OperatorUtilities</a></td> |
| <td class="colLast"> |
| <div class="block">Utility methods, formerly on the OperatorContext class, that work with |
| operators.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/drill/exec/ops/OpProfileDef.html" title="class in org.apache.drill.exec.ops">OpProfileDef</a></td> |
| <td class="colLast"> </td> |
| </tr> |
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| <td class="colFirst"><a href="../../../../../org/apache/drill/exec/ops/QueryContext.html" title="class in org.apache.drill.exec.ops">QueryContext</a></td> |
| <td class="colLast"> </td> |
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| <td class="colFirst"><a href="../../../../../org/apache/drill/exec/ops/SendingAccountor.html" title="class in org.apache.drill.exec.ops">SendingAccountor</a></td> |
| <td class="colLast"> |
| <div class="block">Account for whether all messages sent have been completed.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/drill/exec/ops/StatusHandler.html" title="class in org.apache.drill.exec.ops">StatusHandler</a></td> |
| <td class="colLast"> |
| <div class="block">Listener that keeps track of the status of batches sent, and updates the SendingAccountor when status is received |
| for each batch</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/drill/exec/ops/ViewExpansionContext.html" title="class in org.apache.drill.exec.ops">ViewExpansionContext</a></td> |
| <td class="colLast"> |
| <div class="block">Contains context information about view expansion(s) in a query.</div> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
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| <th class="colFirst" scope="col">Enum</th> |
| <th class="colLast" scope="col">Description</th> |
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| <td class="colFirst"><a href="../../../../../org/apache/drill/exec/ops/QueryContext.SqlStatementType.html" title="enum in org.apache.drill.exec.ops">QueryContext.SqlStatementType</a></td> |
| <td class="colLast"> </td> |
| </tr> |
| </tbody> |
| </table> |
| </li> |
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| <tr> |
| <th class="colFirst" scope="col">Exception</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
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| <td class="colFirst"><a href="../../../../../org/apache/drill/exec/ops/QueryCancelledException.html" title="class in org.apache.drill.exec.ops">QueryCancelledException</a></td> |
| <td class="colLast"> |
| <div class="block">Indicates that an external source has cancelled the query.</div> |
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