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| |
| <h1 id="Apache_Ignite_Core_Compute_ComputeTaskAdapter_3" data-uid="Apache.Ignite.Core.Compute.ComputeTaskAdapter`3" class="text-break">Class ComputeTaskAdapter<TArg, TJobRes, TTaskRes> |
| </h1> |
| <div class="markdown level0 summary"><p>Convenience adapter for <a class="xref" href="Apache.Ignite.Core.Compute.IComputeTask-3.html">IComputeTask<TArg, TJobRes, TRes></a> interface</p> |
| </div> |
| <div class="markdown level0 conceptual"></div> |
| <div class="inheritance"> |
| <h5>Inheritance</h5>
|
| <div class="level0"><span class="xref">System.Object</span></div>
|
| <div class="level1"><span class="xref">ComputeTaskAdapter<TArg, TJobRes, TTaskRes></span></div>
|
| <div class="level2"><a class="xref" href="Apache.Ignite.Core.Compute.ComputeTaskSplitAdapter-3.html">ComputeTaskSplitAdapter<TArg, TJobRes, TTaskRes></a></div>
|
| </div>
|
| <div classs="implements">
|
| <h5>Implements</h5>
|
| <div><a class="xref" href="Apache.Ignite.Core.Compute.IComputeTask-3.html">IComputeTask</a><TArg, TJobRes, TTaskRes></div>
|
| </div>
|
| <div class="inheritedMembers">
|
| <h5>Inherited Members</h5>
|
| <div>
|
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| <span class="xref">System.Object.MemberwiseClone()</span>
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| </div>
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| </div>
|
| <h6><strong>Namespace</strong>: <a class="xref" href="Apache.Ignite.Core.Compute.html">Apache.Ignite.Core.Compute</a></h6>
|
| <h6><strong>Assembly</strong>: Apache.Ignite.Core.dll</h6>
|
| <h5 id="Apache_Ignite_Core_Compute_ComputeTaskAdapter_3_syntax">Syntax</h5>
|
| <div class="codewrapper">
|
| <pre><code class="lang-csharp hljs">public abstract class ComputeTaskAdapter<TArg, TJobRes, TTaskRes> : IComputeTask<TArg, TJobRes, TTaskRes></code></pre>
|
| </div>
|
| <h5 class="typeParameters">Type Parameters</h5>
|
| <table class="table table-bordered table-striped table-condensed">
|
| <thead>
|
| <tr>
|
| <th>Name</th>
|
| <th>Description</th>
|
| </tr>
|
| </thead>
|
| <tbody>
|
| <tr>
|
| <td><span class="parametername">TArg</span></td>
|
| <td></td>
|
| </tr>
|
| <tr>
|
| <td><span class="parametername">TJobRes</span></td>
|
| <td></td>
|
| </tr>
|
| <tr>
|
| <td><span class="parametername">TTaskRes</span></td>
|
| <td></td>
|
| </tr>
|
| </tbody>
|
| </table>
|
| <h3 id="methods">Methods
|
| </h3> |
| <a id="Apache_Ignite_Core_Compute_ComputeTaskAdapter_3_Map_" data-uid="Apache.Ignite.Core.Compute.ComputeTaskAdapter`3.Map*"></a> |
| <h4 id="Apache_Ignite_Core_Compute_ComputeTaskAdapter_3_Map_System_Collections_Generic_IList_Apache_Ignite_Core_Cluster_IClusterNode___0_" data-uid="Apache.Ignite.Core.Compute.ComputeTaskAdapter`3.Map(System.Collections.Generic.IList{Apache.Ignite.Core.Cluster.IClusterNode},`0)">Map(IList<IClusterNode>, TArg)</h4> |
| <div class="markdown level1 summary"><p>This method is called to map or split Ignite task into multiple Ignite jobs. This is the |
| first method that gets called when task execution starts.</p> |
| </div> |
| <div class="markdown level1 conceptual"></div> |
| <h5 class="decalaration">Declaration</h5> |
| <div class="codewrapper">
|
| <pre><code class="lang-csharp hljs">public abstract IDictionary<IComputeJob<TJobRes>, IClusterNode> Map(IList<IClusterNode> subgrid, TArg arg)</code></pre>
|
| </div>
|
| <h5 class="parameters">Parameters</h5>
|
| <table class="table table-bordered table-striped table-condensed">
|
| <thead>
|
| <tr>
|
| <th>Type</th>
|
| <th>Name</th>
|
| <th>Description</th>
|
| </tr>
|
| </thead>
|
| <tbody>
|
| <tr> |
| <td><span class="xref">System.Collections.Generic.IList</span><<a class="xref" href="Apache.Ignite.Core.Cluster.IClusterNode.html">IClusterNode</a>></td> |
| <td><span class="parametername">subgrid</span></td> |
| <td><p>Nodes available for this task execution. Note that order of nodes is |
| guaranteed to be randomized by container. This ensures that every time you simply iterate |
| through Ignite nodes, the order of nodes will be random which over time should result into |
| all nodes being used equally.</p> |
| </td> |
| </tr> |
| <tr> |
| <td><span class="xref">TArg</span></td> |
| <td><span class="parametername">arg</span></td> |
| <td><p>Task execution argument. Can be <code>null</code>. This is the same argument |
| as the one passed into <code>ICompute.Execute()</code> methods.</p> |
| </td> |
| </tr> |
| </tbody> |
| </table>
|
| <h5 class="returns">Returns</h5>
|
| <table class="table table-bordered table-striped table-condensed">
|
| <thead>
|
| <tr>
|
| <th>Type</th>
|
| <th>Description</th>
|
| </tr>
|
| </thead>
|
| <tbody> |
| <tr> |
| <td><span class="xref">System.Collections.Generic.IDictionary</span><<a class="xref" href="Apache.Ignite.Core.Compute.IComputeJob-1.html">IComputeJob</a><TJobRes>, <a class="xref" href="Apache.Ignite.Core.Cluster.IClusterNode.html">IClusterNode</a>></td> |
| <td><p>Map of Ignite jobs assigned to subgrid node. If <code>null</code> or empty map is returned, |
| exception will be thrown.</p> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| <a id="Apache_Ignite_Core_Compute_ComputeTaskAdapter_3_OnResult_" data-uid="Apache.Ignite.Core.Compute.ComputeTaskAdapter`3.OnResult*"></a> |
| <h4 id="Apache_Ignite_Core_Compute_ComputeTaskAdapter_3_OnResult_Apache_Ignite_Core_Compute_IComputeJobResult__1__System_Collections_Generic_IList_Apache_Ignite_Core_Compute_IComputeJobResult__1___" data-uid="Apache.Ignite.Core.Compute.ComputeTaskAdapter`3.OnResult(Apache.Ignite.Core.Compute.IComputeJobResult{`1},System.Collections.Generic.IList{Apache.Ignite.Core.Compute.IComputeJobResult{`1}})">OnResult(IComputeJobResult<TJobRes>, IList<IComputeJobResult<TJobRes>>)</h4> |
| <div class="markdown level1 summary"><p>Default implementation which will wait for all jobs to complete before |
| calling <a class="xref" href="Apache.Ignite.Core.Compute.IComputeTask-3.html#Apache_Ignite_Core_Compute_IComputeTask_3_Reduce_System_Collections_Generic_IList_Apache_Ignite_Core_Compute_IComputeJobResult__1___">Reduce(IList<IComputeJobResult<TJobRes>>)</a> method. |
| <p> |
| If remote job resulted in exception <a class="xref" href="Apache.Ignite.Core.Compute.IComputeJobResult-1.html#Apache_Ignite_Core_Compute_IComputeJobResult_1_Exception">Exception</a> |
| is not <code>null</code>), |
| then <a class="xref" href="Apache.Ignite.Core.Compute.ComputeJobResultPolicy.html#Apache_Ignite_Core_Compute_ComputeJobResultPolicy_Failover">Failover</a> policy will be returned if |
| the exception is instance of <a class="xref" href="Apache.Ignite.Core.Cluster.ClusterTopologyException.html">ClusterTopologyException</a> |
| or <a class="xref" href="Apache.Ignite.Core.Compute.ComputeExecutionRejectedException.html">ComputeExecutionRejectedException</a>, which means that |
| remote node either failed or job execution was rejected before it got a chance to start. In all |
| other cases the exception will be rethrown which will ultimately cause task to fail.</p> |
| </div> |
| <div class="markdown level1 conceptual"></div> |
| <h5 class="decalaration">Declaration</h5> |
| <div class="codewrapper">
|
| <pre><code class="lang-csharp hljs">public virtual ComputeJobResultPolicy OnResult(IComputeJobResult<TJobRes> res, IList<IComputeJobResult<TJobRes>> rcvd)</code></pre>
|
| </div>
|
| <h5 class="parameters">Parameters</h5>
|
| <table class="table table-bordered table-striped table-condensed">
|
| <thead>
|
| <tr>
|
| <th>Type</th>
|
| <th>Name</th>
|
| <th>Description</th>
|
| </tr>
|
| </thead>
|
| <tbody>
|
| <tr> |
| <td><a class="xref" href="Apache.Ignite.Core.Compute.IComputeJobResult-1.html">IComputeJobResult</a><TJobRes></td> |
| <td><span class="parametername">res</span></td> |
| <td><p>Received remote Ignite executable result.</p> |
| </td> |
| </tr> |
| <tr> |
| <td><span class="xref">System.Collections.Generic.IList</span><<a class="xref" href="Apache.Ignite.Core.Compute.IComputeJobResult-1.html">IComputeJobResult</a><TJobRes>></td> |
| <td><span class="parametername">rcvd</span></td> |
| <td><p>All previously received results.</p> |
| </td> |
| </tr> |
| </tbody> |
| </table>
|
| <h5 class="returns">Returns</h5>
|
| <table class="table table-bordered table-striped table-condensed">
|
| <thead>
|
| <tr>
|
| <th>Type</th>
|
| <th>Description</th>
|
| </tr>
|
| </thead>
|
| <tbody> |
| <tr> |
| <td><a class="xref" href="Apache.Ignite.Core.Compute.ComputeJobResultPolicy.html">ComputeJobResultPolicy</a></td> |
| <td><p>Result policy that dictates how to process further upcoming job results.</p> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| <a id="Apache_Ignite_Core_Compute_ComputeTaskAdapter_3_Reduce_" data-uid="Apache.Ignite.Core.Compute.ComputeTaskAdapter`3.Reduce*"></a> |
| <h4 id="Apache_Ignite_Core_Compute_ComputeTaskAdapter_3_Reduce_System_Collections_Generic_IList_Apache_Ignite_Core_Compute_IComputeJobResult__1___" data-uid="Apache.Ignite.Core.Compute.ComputeTaskAdapter`3.Reduce(System.Collections.Generic.IList{Apache.Ignite.Core.Compute.IComputeJobResult{`1}})">Reduce(IList<IComputeJobResult<TJobRes>>)</h4> |
| <div class="markdown level1 summary"><p>Reduces (or aggregates) results received so far into one compound result to be returned to |
| caller via task. |
| <p> |
| Note, that if some jobs did not succeed and could not be failed over then the list of |
| results passed into this method will include the failed results. Otherwise, failed |
| results will not be in the list.</p> |
| </div> |
| <div class="markdown level1 conceptual"></div> |
| <h5 class="decalaration">Declaration</h5> |
| <div class="codewrapper">
|
| <pre><code class="lang-csharp hljs">public abstract TTaskRes Reduce(IList<IComputeJobResult<TJobRes>> results)</code></pre>
|
| </div>
|
| <h5 class="parameters">Parameters</h5>
|
| <table class="table table-bordered table-striped table-condensed">
|
| <thead>
|
| <tr>
|
| <th>Type</th>
|
| <th>Name</th>
|
| <th>Description</th>
|
| </tr>
|
| </thead>
|
| <tbody>
|
| <tr> |
| <td><span class="xref">System.Collections.Generic.IList</span><<a class="xref" href="Apache.Ignite.Core.Compute.IComputeJobResult-1.html">IComputeJobResult</a><TJobRes>></td> |
| <td><span class="parametername">results</span></td> |
| <td><p>Received job results. Note that if task class has |
| <a class="xref" href="Apache.Ignite.Core.Compute.ComputeTaskNoResultCacheAttribute.html">ComputeTaskNoResultCacheAttribute</a> attribute, then this list will be empty.</p> |
| </td> |
| </tr> |
| </tbody> |
| </table>
|
| <h5 class="returns">Returns</h5>
|
| <table class="table table-bordered table-striped table-condensed">
|
| <thead>
|
| <tr>
|
| <th>Type</th>
|
| <th>Description</th>
|
| </tr>
|
| </thead>
|
| <tbody> |
| <tr> |
| <td><span class="xref">TTaskRes</span></td> |
| <td><p>Task result constructed from results of remote executions.</p> |
| </td> |
| </tr> |
| </tbody> |
| </table>
|
| <h3 id="implements">Implements</h3>
|
| <div>
|
| <a class="xref" href="Apache.Ignite.Core.Compute.IComputeTask-3.html">IComputeTask<TArg, TJobRes, TRes></a>
|
| </div>
|
| </article>
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