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            <article class="content wrap" id="_content" data-uid="Apache.Ignite.Core.Cluster">
  
  <h1 id="Apache_Ignite_Core_Cluster" data-uid="Apache.Ignite.Core.Cluster" class="text-break">Namespace Apache.Ignite.Core.Cluster
  </h1>
  <div class="markdown level0 summary"></div>
  <div class="markdown level0 conceptual"></div>
  <div class="markdown level0 remarks"></div>
    <h3 id="classes">Classes
  </h3>
      <h4><a class="xref" href="Apache.Ignite.Core.Cluster.AttributeNodeFilter.html">AttributeNodeFilter</a></h4>
      <section><p>Attribute node filter.
<p>
The filter will evaluate to true if a node has all specified attributes with corresponding values.
<p>
You can set node attributes using <a class="xref" href="Apache.Ignite.Core.IgniteConfiguration.html#Apache_Ignite_Core_IgniteConfiguration_UserAttributes">UserAttributes</a> property. </p>
</section>
      <h4><a class="xref" href="Apache.Ignite.Core.Cluster.ClusterGroupEmptyException.html">ClusterGroupEmptyException</a></h4>
      <section><p>Indicates an illegal call on empty projection. Thrown by projection when operation
that requires at least one node is called on empty projection.</p>
</section>
      <h4><a class="xref" href="Apache.Ignite.Core.Cluster.ClusterTopologyException.html">ClusterTopologyException</a></h4>
      <section><p>Indicates an error with grid topology (e.g., crashed node, etc.)</p>
</section>
    <h3 id="interfaces">Interfaces
  </h3>
      <h4><a class="xref" href="Apache.Ignite.Core.Cluster.IBaselineNode.html">IBaselineNode</a></h4>
      <section><p>Baseline topology node (see <a class="xref" href="Apache.Ignite.Core.Cluster.ICluster.html#Apache_Ignite_Core_Cluster_ICluster_GetBaselineTopology">GetBaselineTopology()</a>).</p>
</section>
      <h4><a class="xref" href="Apache.Ignite.Core.Cluster.ICluster.html">ICluster</a></h4>
      <section><p>Represents whole cluster (group of all nodes in a cluster).
<p>
All members are thread-safe and may be used concurrently from multiple threads.</p>
</section>
      <h4><a class="xref" href="Apache.Ignite.Core.Cluster.IClusterGroup.html">IClusterGroup</a></h4>
      <section><p>Defines grid projection which represents a common functionality over a group of nodes.
Grid projection allows to group Ignite nodes into various subgroups to perform distributed
operations on them. All ForXXX(...)&apos; methods will create a child grid projection
from existing projection. If you create a new projection from current one, then the resulting
projection will include a subset of nodes from current projection. The following code snippet
shows how to create grid projections:</p>
<pre><code>var g = Ignition.GetIgnite();

// Projection over remote nodes.
var remoteNodes = g.ForRemotes();

// Projection over random remote node.
var randomNode = g.ForRandom();

// Projection over all nodes with cache named &quot;myCache&quot; enabled.
var cacheNodes = g.ForCacheNodes(&quot;myCache&quot;);

// Projection over all nodes that have user attribute &quot;group&quot; set to value &quot;worker&quot;.
var workerNodes = g.ForAttribute(&quot;group&quot;, &quot;worker&quot;);</code></pre>
<p>Grid projection provides functionality for executing tasks and closures over 
nodes in this projection using <a class="xref" href="Apache.Ignite.Core.Cluster.IClusterGroup.html#Apache_Ignite_Core_Cluster_IClusterGroup_GetCompute">GetCompute()</a>.
<p>
All members are thread-safe and may be used concurrently from multiple threads.</p>
</section>
      <h4><a class="xref" href="Apache.Ignite.Core.Cluster.IClusterMetrics.html">IClusterMetrics</a></h4>
      <section><p>Represents runtime information of a cluster. Apart from obvious
statistical value, this information is used for implementation of
load balancing, failover, and collision SPIs. For example, collision SPI
in combination with fail-over SPI could check if other nodes don&apos;t have
any active or waiting jobs and fail-over some jobs to those nodes.
<p>
Node metrics for any node can be accessed via <a class="xref" href="Apache.Ignite.Core.Cluster.IClusterNode.html#Apache_Ignite_Core_Cluster_IClusterNode_GetMetrics">GetMetrics()</a> 
method. Keep in mind that there will be a certain network delay (usually
equal to heartbeat delay) for the accuracy of node metrics. However, when accessing
metrics on local node the metrics are always accurate and up to date.</p>
</section>
      <h4><a class="xref" href="Apache.Ignite.Core.Cluster.IClusterNode.html">IClusterNode</a></h4>
      <section><p>Interface representing a single cluster node. Use <a class="xref" href="Apache.Ignite.Core.Cluster.IClusterNode.html#Apache_Ignite_Core_Cluster_IClusterNode_GetAttribute__1_System_String_">GetAttribute&lt;T&gt;(String)</a> or
<a class="xref" href="Apache.Ignite.Core.Cluster.IClusterNode.html#Apache_Ignite_Core_Cluster_IClusterNode_GetMetrics">GetMetrics()</a> to get static and dynamic information about remote nodes.
You can get a list of all nodes in grid by calling <a class="xref" href="Apache.Ignite.Core.Cluster.IClusterGroup.html#Apache_Ignite_Core_Cluster_IClusterGroup_GetNodes">GetNodes()</a> 
on <a class="xref" href="Apache.Ignite.Core.IIgnite.html">IIgnite</a> instance.
<p>
You can use Ignite node attributes to provide static information about a node.
This information is initialized once within grid, during node startup, and
remains the same throughout the lifetime of a node. 
<p>
All members are thread-safe and may be used concurrently from multiple threads.</p>
</section>
      <h4><a class="xref" href="Apache.Ignite.Core.Cluster.IClusterNodeFilter.html">IClusterNodeFilter</a></h4>
      <section><p>Represents cluster node filter.</p>
</section>
</article>
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