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| <h2 title="Class DFSTopologyNodeImpl" class="title">Class DFSTopologyNodeImpl</h2> |
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| <li> |
| <ul class="inheritance"> |
| <li>org.apache.hadoop.net.NodeBase</li> |
| <li> |
| <ul class="inheritance"> |
| <li>org.apache.hadoop.net.InnerNodeImpl</li> |
| <li> |
| <ul class="inheritance"> |
| <li>org.apache.hadoop.hdfs.net.DFSTopologyNodeImpl</li> |
| </ul> |
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| <dd>org.apache.hadoop.net.InnerNode, org.apache.hadoop.net.Node</dd> |
| </dl> |
| <hr> |
| <br> |
| <pre>public class <span class="typeNameLabel">DFSTopologyNodeImpl</span> |
| extends org.apache.hadoop.net.InnerNodeImpl</pre> |
| <div class="block">The HDFS-specific representation of a network topology inner node. The |
| difference is this class includes the information about the storage type |
| info of this subtree. This info will be used when selecting subtrees |
| in block placement.</div> |
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| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Field and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static org.slf4j.Logger</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hdfs/net/DFSTopologyNodeImpl.html#LOG">LOG</a></span></code> </td> |
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| <h3>Fields inherited from class org.apache.hadoop.net.InnerNodeImpl</h3> |
| <code>children, childrenMap, numOfLeaves</code></li> |
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| <code>level, location, name, parent, PATH_SEPARATOR, PATH_SEPARATOR_STR, ROOT</code></li> |
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| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Method and Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hdfs/net/DFSTopologyNodeImpl.html#add-org.apache.hadoop.net.Node-">add</a></span>(org.apache.hadoop.net.Node n)</code> </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hdfs/net/DFSTopologyNodeImpl.html#childAddStorage-java.lang.String-org.apache.hadoop.fs.StorageType-">childAddStorage</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> childName, |
| org.apache.hadoop.fs.StorageType type)</code> |
| <div class="block">Called by a child node of the current node to increment a storage count.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hdfs/net/DFSTopologyNodeImpl.html#childRemoveStorage-java.lang.String-org.apache.hadoop.fs.StorageType-">childRemoveStorage</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> childName, |
| org.apache.hadoop.fs.StorageType type)</code> |
| <div class="block">Called by a child node of the current node to decrement a storage count.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hdfs/net/DFSTopologyNodeImpl.html#equals-java.lang.Object-">equals</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> o)</code> </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hdfs/net/DFSTopologyNodeImpl.html#getSubtreeStorageCount-org.apache.hadoop.fs.StorageType-">getSubtreeStorageCount</a></span>(org.apache.hadoop.fs.StorageType type)</code> </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hdfs/net/DFSTopologyNodeImpl.html#hashCode--">hashCode</a></span>()</code> </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hdfs/net/DFSTopologyNodeImpl.html#remove-org.apache.hadoop.net.Node-">remove</a></span>(org.apache.hadoop.net.Node n)</code> </td> |
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| <!-- --> |
| </a> |
| <h3>Methods inherited from class org.apache.hadoop.net.InnerNodeImpl</h3> |
| <code>getChildren, getLeaf, getLoc, getNextAncestorName, getNumOfChildren, getNumOfLeaves, isAncestor, isParent, isRack</code></li> |
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| <h3>Methods inherited from class org.apache.hadoop.net.NodeBase</h3> |
| <code>getLevel, getName, getNetworkLocation, getParent, getPath, getPathComponents, locationToDepth, normalize, setLevel, setNetworkLocation, setParent, toString</code></li> |
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| <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/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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| <!-- --> |
| </a> |
| <h3>Methods inherited from interface org.apache.hadoop.net.Node</h3> |
| <code>getLevel, getName, getNetworkLocation, getParent, setLevel, setNetworkLocation, setParent</code></li> |
| </ul> |
| </li> |
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| <div class="details"> |
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| <!-- ============ FIELD DETAIL =========== --> |
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| <h3>Field Detail</h3> |
| <a name="LOG"> |
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| <h4>LOG</h4> |
| <pre>public static final org.slf4j.Logger LOG</pre> |
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| <h4>getSubtreeStorageCount</h4> |
| <pre>public int getSubtreeStorageCount(org.apache.hadoop.fs.StorageType type)</pre> |
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| <a name="add-org.apache.hadoop.net.Node-"> |
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| <h4>add</h4> |
| <pre>public boolean add(org.apache.hadoop.net.Node n)</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code>add</code> in interface <code>org.apache.hadoop.net.InnerNode</code></dd> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code>add</code> in class <code>org.apache.hadoop.net.InnerNodeImpl</code></dd> |
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| <h4>equals</h4> |
| <pre>public boolean equals(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> o)</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code>equals</code> in class <code>org.apache.hadoop.net.InnerNodeImpl</code></dd> |
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| <pre>public int hashCode()</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code>hashCode</code> in class <code>org.apache.hadoop.net.InnerNodeImpl</code></dd> |
| </dl> |
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| <a name="remove-org.apache.hadoop.net.Node-"> |
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| <h4>remove</h4> |
| <pre>public boolean remove(org.apache.hadoop.net.Node n)</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code>remove</code> in interface <code>org.apache.hadoop.net.InnerNode</code></dd> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code>remove</code> in class <code>org.apache.hadoop.net.InnerNodeImpl</code></dd> |
| </dl> |
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| <h4>childAddStorage</h4> |
| <pre>public void childAddStorage(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> childName, |
| org.apache.hadoop.fs.StorageType type)</pre> |
| <div class="block">Called by a child node of the current node to increment a storage count. |
| |
| lock is needed as different datanodes may call recursively to modify |
| the same parent. |
| TODO : this may not happen at all, depending on how heartheat is processed</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>childName</code> - the name of the child that tries to add the storage type</dd> |
| <dd><code>type</code> - the type being incremented.</dd> |
| </dl> |
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| <h4>childRemoveStorage</h4> |
| <pre>public void childRemoveStorage(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> childName, |
| org.apache.hadoop.fs.StorageType type)</pre> |
| <div class="block">Called by a child node of the current node to decrement a storage count.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>childName</code> - the name of the child removing a storage type.</dd> |
| <dd><code>type</code> - the type being removed.</dd> |
| </dl> |
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