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| <div class="subTitle">org.apache.ignite.configuration</div> |
| <h2 title="Enum DeploymentMode" class="title">Enum DeploymentMode</h2> |
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| <li><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Enum.html?is-external=true" title="class or interface in java.lang">java.lang.Enum</a><span class='angle_bracket'><</span><a href="../../../../org/apache/ignite/configuration/DeploymentMode.html" title="enum in org.apache.ignite.configuration">DeploymentMode</a><span class='angle_bracket'>></span></li> |
| <li> |
| <ul class="inheritance"> |
| <li>org.apache.ignite.configuration.DeploymentMode</li> |
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| <hr> |
| <br> |
| <pre>public enum <span class="strong">DeploymentMode</span> |
| extends <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Enum.html?is-external=true" title="class or interface in java.lang">Enum</a><span class='angle_bracket'><</span><a href="../../../../org/apache/ignite/configuration/DeploymentMode.html" title="enum in org.apache.ignite.configuration">DeploymentMode</a><span class='angle_bracket'>></span></pre> |
| <div class="block">Grid deployment mode. Deployment mode is specified at grid startup via |
| <a href="../../../../org/apache/ignite/configuration/IgniteConfiguration.html#getDeploymentMode()"><code>IgniteConfiguration.getDeploymentMode()</code></a> configuration property |
| (it can also be specified in Spring XML configuration file). The main |
| difference between all deployment modes is how classes are loaded on remote nodes via peer-class-loading mechanism. |
| <p> |
| The following deployment modes are supported: |
| <ul> |
| <li><a href="../../../../org/apache/ignite/configuration/DeploymentMode.html#PRIVATE"><code>PRIVATE</code></a></li> |
| <li><a href="../../../../org/apache/ignite/configuration/DeploymentMode.html#ISOLATED"><code>ISOLATED</code></a></li> |
| <li><a href="../../../../org/apache/ignite/configuration/DeploymentMode.html#SHARED"><code>SHARED</code></a></li> |
| <li><a href="../../../../org/apache/ignite/configuration/DeploymentMode.html#CONTINUOUS"><code>CONTINUOUS</code></a></li> |
| </ul> |
| <h1 class="header">User Version</h1> |
| User version comes into play whenever you would like to redeploy tasks deployed |
| in <a href="../../../../org/apache/ignite/configuration/DeploymentMode.html#SHARED"><code>SHARED</code></a> or <a href="../../../../org/apache/ignite/configuration/DeploymentMode.html#CONTINUOUS"><code>CONTINUOUS</code></a> modes. By default, Ignite will |
| automatically detect if class-loader changed or a node is restarted. However, |
| if you would like to change and redeploy code on a subset of nodes, or in |
| case of <a href="../../../../org/apache/ignite/configuration/DeploymentMode.html#CONTINUOUS"><code>CONTINUOUS</code></a> mode to kill the ever living deployment, you should |
| change the user version. |
| <p> |
| User version is specified in <code>META-INF/ignite.xml</code> file as follows: |
| <pre name="code" class="xml"> |
| <!-- User version. --> |
| <bean id="userVersion" class="java.lang.String"> |
| <constructor-arg value="0"/> |
| </bean> |
| </pre> |
| By default, all ignite startup scripts (<code>ignite.sh</code> or <code>ignite.bat</code>) |
| pick up user version from <code>IGNITE_HOME/config/userversion</code> folder. Usually, it |
| is just enough to update user version under that folder, however, in case of <code>GAR</code> |
| or <code>JAR</code> deployment, you should remember to provide <code>META-INF/ignite.xml</code> |
| file with desired user version in it. |
| <p> |
| <h1 class="header">Always-Local Development</h1> |
| Ignite deployment (regardless of mode) allows you to develop everything as you would |
| locally. You never need to specifically write any kind of code for remote nodes. For |
| example, if you need to use a distributed cache from your <a href="../../../../org/apache/ignite/compute/ComputeJob.html" title="interface in org.apache.ignite.compute"><code>ComputeJob</code></a>, then you can |
| the following: |
| <ol> |
| <li> |
| Simply startup stand-alone Ignite nodes by executing |
| <code>IGNITE_HOME/ignite.{sh|bat}</code> scripts. |
| </li> |
| <li> |
| Now, all jobs executing locally or remotely can have a single instance of cache |
| on every node, and all jobs can access instances stored by any other job without |
| any need for explicit deployment. |
| </li> |
| </ol></div> |
| </li> |
| </ul> |
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| <!-- =========== ENUM CONSTANT SUMMARY =========== --> |
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| </a> |
| <h3>Enum Constant Summary</h3> |
| <table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Enum Constant Summary table, listing enum constants, and an explanation"> |
| <caption><span>Enum Constants</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colOne" scope="col">Enum Constant and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><code><strong><a href="../../../../org/apache/ignite/configuration/DeploymentMode.html#CONTINUOUS">CONTINUOUS</a></strong></code> |
| <div class="block">Same as <a href="../../../../org/apache/ignite/configuration/DeploymentMode.html#SHARED"><code>SHARED</code></a> deployment mode, but resources will not be undeployed even after all master |
| nodes left grid.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><code><strong><a href="../../../../org/apache/ignite/configuration/DeploymentMode.html#ISOLATED">ISOLATED</a></strong></code> |
| <div class="block">Unlike <a href="../../../../org/apache/ignite/configuration/DeploymentMode.html#PRIVATE"><code>PRIVATE</code></a> mode, where different deployed tasks will |
| never use the same instance of resources, in <code>ISOLATED</code> |
| mode, tasks or classes deployed within the same class loader |
| will share the same instances of resources.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><code><strong><a href="../../../../org/apache/ignite/configuration/DeploymentMode.html#PRIVATE">PRIVATE</a></strong></code> |
| <div class="block">In this mode deployed classes do not share resources.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><code><strong><a href="../../../../org/apache/ignite/configuration/DeploymentMode.html#SHARED">SHARED</a></strong></code> |
| <div class="block">Same as <a href="../../../../org/apache/ignite/configuration/DeploymentMode.html#ISOLATED"><code>ISOLATED</code></a>, but now tasks from |
| different master nodes with the same user version and same |
| class loader will share the same class loader on remote |
| nodes.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| <!-- ========== METHOD SUMMARY =========== --> |
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| <h3>Method Summary</h3> |
| <table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> |
| <caption><span>Methods</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Method and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static <a href="../../../../org/apache/ignite/configuration/DeploymentMode.html" title="enum in org.apache.ignite.configuration">DeploymentMode</a></code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/ignite/configuration/DeploymentMode.html#fromOrdinal(int)">fromOrdinal</a></strong>(int ord)</code> |
| <div class="block">Efficiently gets enumerated value from its ordinal.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static <a href="../../../../org/apache/ignite/configuration/DeploymentMode.html" title="enum in org.apache.ignite.configuration">DeploymentMode</a></code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/ignite/configuration/DeploymentMode.html#valueOf(java.lang.String)">valueOf</a></strong>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> name)</code> |
| <div class="block">Returns the enum constant of this type with the specified name.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static <a href="../../../../org/apache/ignite/configuration/DeploymentMode.html" title="enum in org.apache.ignite.configuration">DeploymentMode</a>[]</code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/ignite/configuration/DeploymentMode.html#values()">values</a></strong>()</code> |
| <div class="block">Returns an array containing the constants of this enum type, in |
| the order they are declared.</div> |
| </td> |
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| <h3>Methods inherited from class java.lang.<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Enum.html?is-external=true" title="class or interface in java.lang">Enum</a></h3> |
| <code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Enum.html?is-external=true#clone()" title="class or interface in java.lang">clone</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Enum.html?is-external=true#compareTo(E)" title="class or interface in java.lang">compareTo</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Enum.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang">equals</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Enum.html?is-external=true#finalize()" title="class or interface in java.lang">finalize</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Enum.html?is-external=true#getDeclaringClass()" title="class or interface in java.lang">getDeclaringClass</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Enum.html?is-external=true#hashCode()" title="class or interface in java.lang">hashCode</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Enum.html?is-external=true#name()" title="class or interface in java.lang">name</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Enum.html?is-external=true#ordinal()" title="class or interface in java.lang">ordinal</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Enum.html?is-external=true#toString()" title="class or interface in java.lang">toString</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Enum.html?is-external=true#valueOf(java.lang.Class, java.lang.String)" title="class or interface in java.lang">valueOf</a></code></li> |
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| <h3>Methods inherited from class java.lang.<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3> |
| <code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang">getClass</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang">notify</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang">notifyAll</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait(long, int)" title="class or interface in java.lang">wait</a></code></li> |
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| </div> |
| <div class="details"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <!-- ============ ENUM CONSTANT DETAIL =========== --> |
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| <!-- --> |
| </a> |
| <h3>Enum Constant Detail</h3> |
| <a name="PRIVATE"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>PRIVATE</h4> |
| <pre>public static final <a href="../../../../org/apache/ignite/configuration/DeploymentMode.html" title="enum in org.apache.ignite.configuration">DeploymentMode</a> PRIVATE</pre> |
| <div class="block">In this mode deployed classes do not share resources. Basically, resources are created |
| once per deployed task class and then get reused for all executions. |
| <p> |
| Note that classes deployed within the same class loader on master |
| node, will still share the same class loader remotely on worker nodes. |
| However, tasks deployed from different master nodes will not |
| share the same class loader on worker nodes, which is useful in |
| development when different developers can be working on different |
| versions of the same classes. |
| <p> |
| Also note that resources are associated with task deployment, |
| not task execution. If the same deployed task gets executed multiple |
| times, then it will keep reusing the same user resources |
| every time.</div> |
| </li> |
| </ul> |
| <a name="ISOLATED"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>ISOLATED</h4> |
| <pre>public static final <a href="../../../../org/apache/ignite/configuration/DeploymentMode.html" title="enum in org.apache.ignite.configuration">DeploymentMode</a> ISOLATED</pre> |
| <div class="block">Unlike <a href="../../../../org/apache/ignite/configuration/DeploymentMode.html#PRIVATE"><code>PRIVATE</code></a> mode, where different deployed tasks will |
| never use the same instance of resources, in <code>ISOLATED</code> |
| mode, tasks or classes deployed within the same class loader |
| will share the same instances of resources. |
| This means that if multiple tasks classes are loaded by the same |
| class loader on master node, then they will share instances |
| of resources on worker nodes. In other words, user resources |
| get initialized once per class loader and then get reused for all |
| consecutive executions. |
| <p> |
| Note that classes deployed within the same class loader on master |
| node, will still share the same class loader remotely on worker nodes. |
| However, tasks deployed from different master nodes will not |
| share the same class loader on worker nodes, which is especially |
| useful when different developers can be working on different versions |
| of the same classes.</div> |
| </li> |
| </ul> |
| <a name="SHARED"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>SHARED</h4> |
| <pre>public static final <a href="../../../../org/apache/ignite/configuration/DeploymentMode.html" title="enum in org.apache.ignite.configuration">DeploymentMode</a> SHARED</pre> |
| <div class="block">Same as <a href="../../../../org/apache/ignite/configuration/DeploymentMode.html#ISOLATED"><code>ISOLATED</code></a>, but now tasks from |
| different master nodes with the same user version and same |
| class loader will share the same class loader on remote |
| nodes. Classes will be undeployed whenever all master |
| nodes leave grid or user version changes. |
| <p> |
| The advantage of this approach is that it allows tasks coming from |
| different master nodes share the same instances of resources on worker nodes. This allows for all |
| tasks executing on remote nodes to reuse, for example, the same instances of |
| connection pools or caches. When using this mode, you can |
| startup multiple stand-alone Ignite worker nodes, define resources |
| on master nodes and have them initialize once on worker nodes regardless |
| of which master node they came from. |
| <p> |
| This method is specifically useful in production as, in comparison |
| to <a href="../../../../org/apache/ignite/configuration/DeploymentMode.html#ISOLATED"><code>ISOLATED</code></a> deployment mode, which has a scope of single |
| class loader on a single master node, this mode broadens the |
| deployment scope to all master nodes. |
| <p> |
| Note that classes deployed in this mode will be undeployed if |
| all master nodes left grid or if user version changed. User version can |
| be specified in <code>META-INF/ignite.xml</code> file as a Spring bean |
| property with name <code>userVersion</code>. This file has to be in the class |
| path of the class used for task execution. |
| <p> |
| <code>SHARED</code> deployment mode is default mode used by the grid.</div> |
| </li> |
| </ul> |
| <a name="CONTINUOUS"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>CONTINUOUS</h4> |
| <pre>public static final <a href="../../../../org/apache/ignite/configuration/DeploymentMode.html" title="enum in org.apache.ignite.configuration">DeploymentMode</a> CONTINUOUS</pre> |
| <div class="block">Same as <a href="../../../../org/apache/ignite/configuration/DeploymentMode.html#SHARED"><code>SHARED</code></a> deployment mode, but resources will not be undeployed even after all master |
| nodes left grid. Tasks from different master nodes with the same user |
| version and same class loader will share the same class loader on remote |
| worker nodes. Classes will be undeployed whenever user version changes. |
| <p> |
| The advantage of this approach is that it allows tasks coming from |
| different master nodes share the same instances of resources on worker nodes. This allows for all |
| tasks executing on remote nodes to reuse, for example, the same instances of |
| connection pools or caches. When using this mode, you can |
| startup multiple stand-alone Ignite worker nodes, define resources |
| on master nodes and have them initialize once on worker nodes regardless |
| of which master node they came from. |
| <p> |
| This method is specifically useful in production as, in comparison |
| to <a href="../../../../org/apache/ignite/configuration/DeploymentMode.html#ISOLATED"><code>ISOLATED</code></a> deployment mode, which has a scope of single |
| class loader on a single master node, <tt>CONTINUOUS</tt> mode broadens |
| the deployment scope to all master nodes. |
| <p> |
| Note that classes deployed in <tt>CONTINUOUS</tt> mode will be undeployed |
| only if user version changes. User version can be specified in |
| <code>META-INF/ignite.xml</code> file as a Spring bean property with name |
| <code>userVersion</code>. This file has to be in the class |
| path of the class used for task execution.</div> |
| </li> |
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| <h4>values</h4> |
| <pre>public static <a href="../../../../org/apache/ignite/configuration/DeploymentMode.html" title="enum in org.apache.ignite.configuration">DeploymentMode</a>[] values()</pre> |
| <div class="block">Returns an array containing the constants of this enum type, in |
| the order they are declared. This method may be used to iterate |
| over the constants as follows: |
| <pre> |
| for (DeploymentMode c : DeploymentMode.values()) |
| System.out.println(c); |
| </pre></div> |
| <dl><dt><span class="strong">Returns:</span></dt><dd>an array containing the constants of this enum type, in |
| the order they are declared</dd></dl> |
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| <h4>valueOf</h4> |
| <pre>public static <a href="../../../../org/apache/ignite/configuration/DeploymentMode.html" title="enum in org.apache.ignite.configuration">DeploymentMode</a> valueOf(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> name)</pre> |
| <div class="block">Returns the enum constant of this type with the specified name. |
| The string must match <i>exactly</i> an identifier used to declare an |
| enum constant in this type. (Extraneous whitespace characters are |
| not permitted.)</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>name</code> - the name of the enum constant to be returned.</dd> |
| <dt><span class="strong">Returns:</span></dt><dd>the enum constant with the specified name</dd> |
| <dt><span class="strong">Throws:</span></dt> |
| <dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang">IllegalArgumentException</a></code> - if this enum type has no constant |
| with the specified name</dd> |
| <dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/NullPointerException.html?is-external=true" title="class or interface in java.lang">NullPointerException</a></code> - if the argument is null</dd></dl> |
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| <h4>fromOrdinal</h4> |
| <pre>@Nullable |
| public static <a href="../../../../org/apache/ignite/configuration/DeploymentMode.html" title="enum in org.apache.ignite.configuration">DeploymentMode</a> fromOrdinal(int ord)</pre> |
| <div class="block">Efficiently gets enumerated value from its ordinal.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>ord</code> - Ordinal value.</dd> |
| <dt><span class="strong">Returns:</span></dt><dd>Enumerated value.</dd></dl> |
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| <p class="legalCopy"><small><table width="100%" border="0" cellspacing=0 cellpadding=0 style="padding: 5px"> <tr> <td> <table style="padding-left: 0; margin: 0"> <tbody style="padding: 0; margin: 0"> <tr style="padding: 0; margin: 0"> <td> <a target=_blank href="https://incubator.apache.org/projects/ignite.html"><nobr>2015 Copyright © Apache Software Foundation</nobr></a> </td> </tr> </tbody> </table> </td> <td width="100%" align="right" valign="center"> <a href="https://twitter.com/ApacheIgnite" class="twitter-follow-button" data-show-count="false" data-size="large">Follow @ApacheIgnite</a> <script>!function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0],p=/^http:/.test(d.location)?'http':'https';if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src=p+'://platform.twitter.com/widgets.js';fjs.parentNode.insertBefore(js,fjs);}}(document, 'script', 'twitter-wjs');</script> </td> </tr> <tr> <td colspan="2" valign="top" align="left"> <table style="padding-left: 0; margin: 0"> <tbody style="padding: 0; margin: 0"> <tr style="padding: 0; margin: 0"> <td> <b>Apache Ignite Fabric</b> </td> <td>: ver. <strong>1.0.0-RC3</strong> </td> </tr> <tr style="padding: 0; margin: 0"> <td> <b>Release Date</b> </td> <td>: March 24 2015 </td> </tr> </tbody> </table> </td> </tr> </table></small></p> |
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