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 <div class="subTitle">org.apache.storm.utils</div>
 <h2 title="Class ServerUtils" class="title">Class ServerUtils</h2>
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 <pre>public class <span class="typeNameLabel">ServerUtils</span>
 extends <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></pre>
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 <caption><span>Fields</span><span class="tabEnd">&nbsp;</span></caption>
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 <th class="colFirst" scope="col">Modifier and Type</th>
 <th class="colLast" scope="col">Field and Description</th>
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 <tr class="altColor">
 <td class="colFirst"><code>static boolean</code></td>
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 <tr class="rowColor">
 <td class="colFirst"><code>static org.slf4j.Logger</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/utils/ServerUtils.html#LOG">LOG</a></span></code>&nbsp;</td>
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 <tr class="altColor">
 <td class="colFirst"><code>static int</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/utils/ServerUtils.html#SIGKILL">SIGKILL</a></span></code>&nbsp;</td>
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 <td class="colFirst"><code>static int</code></td>
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 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/utils/ServerUtils.html#ServerUtils--">ServerUtils</a></span>()</code>&nbsp;</td>
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 <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
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 <td class="colFirst"><code>static boolean</code></td>
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 <td class="colFirst"><code><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></code></td>
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 <td class="colFirst"><code>static void</code></td>
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 <div class="block">Extracts the given file to the given directory.</div>
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 <td class="colFirst"><code>static void</code></td>
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 <td class="colFirst"><code>static <a href="../../../../org/apache/storm/blobstore/ClientBlobStore.html" title="class in org.apache.storm.blobstore">ClientBlobStore</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/utils/ServerUtils.html#getClientBlobStoreForSupervisor-java.util.Map-">getClientBlobStoreForSupervisor</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;<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>,<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>&gt;&nbsp;conf)</code>&nbsp;</td>
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 <td class="colFirst"><code>static int</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/utils/ServerUtils.html#getComponentParallelism-java.util.Map-java.lang.Object-">getComponentParallelism</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;<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>,<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>&gt;&nbsp;topoConf,
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 <tr id="i10" class="altColor">
 <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;<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>,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>&gt;</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/utils/ServerUtils.html#getComponentParallelism-java.util.Map-org.apache.storm.generated.StormTopology-">getComponentParallelism</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;<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>,<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>&gt;&nbsp;topoConf,
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 <td class="colFirst"><code>static long</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/utils/ServerUtils.html#getDiskUsage-java.io.File-">getDiskUsage</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</a>&nbsp;dir)</code>
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 <td class="colFirst"><code>static double</code></td>
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 <td class="colFirst"><code>static int</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/utils/ServerUtils.html#getEstimatedWorkerCountForRasTopo-java.util.Map-org.apache.storm.generated.StormTopology-">getEstimatedWorkerCountForRasTopo</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;<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>,<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>&gt;&nbsp;topoConf,
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 <td class="colFirst"><code>static <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></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/utils/ServerUtils.html#getFileOwner-java.lang.String-">getFileOwner</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>&nbsp;path)</code>&nbsp;</td>
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 <td class="colFirst"><code>static long</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/utils/ServerUtils.html#getMemInfoFreeMb--">getMemInfoFreeMb</a></span>()</code>
 <div class="block">Get system free memory in megabytes.</div>
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 <td class="colFirst"><code>static <a href="../../../../org/apache/storm/blobstore/BlobStore.html" title="class in org.apache.storm.blobstore">BlobStore</a></code></td>
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 <td class="colFirst"><code>static int</code></td>
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 <div class="block">Get the userId of the onwer of the path by running &ldquo;ls -dn path&rdquo; command.</div>
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 <tr id="i19" class="rowColor">
 <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/net/URL.html?is-external=true" title="class or interface in java.net">URL</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/utils/ServerUtils.html#getResourceFromClassloader-java.lang.String-">getResourceFromClassloader</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>&nbsp;name)</code>
 <div class="block">Returns the current thread classloader.</div>
 </td>
 </tr>
 <tr id="i20" class="altColor">
 <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/net/URL.html?is-external=true" title="class or interface in java.net">URL</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/utils/ServerUtils.html#getResourceFromClassloaderImpl-java.lang.String-">getResourceFromClassloaderImpl</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>&nbsp;name)</code>&nbsp;</td>
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 <tr id="i21" class="rowColor">
 <td class="colFirst"><code>static int</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/utils/ServerUtils.html#getUserId-java.lang.String-">getUserId</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>&nbsp;user)</code>
 <div class="block">Get the userId for a user name.</div>
 </td>
 </tr>
 <tr id="i22" class="altColor">
 <td class="colFirst"><code>static &lt;T&gt;&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;T&gt;</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/utils/ServerUtils.html#interleaveAll-java.util.List-">interleaveAll</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;T&gt;&gt;&nbsp;nodeList)</code>&nbsp;</td>
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 <tr id="i23" class="rowColor">
 <td class="colFirst"><code>static boolean</code></td>
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 <tr id="i24" class="altColor">
 <td class="colFirst"><code>static boolean</code></td>
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                             <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>&nbsp;user)</code>
 <div class="block">Find if the process is alive using the existence of /proc/&lt;pid&gt; directory owned by the supplied user.</div>
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 <tr id="i25" class="rowColor">
 <td class="colFirst"><code>static boolean</code></td>
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                             <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>&nbsp;expectedUser,
                             boolean&nbsp;mockFileOwnerToUid)</code>
 <div class="block">Find if the process is alive using the existence of /proc/&lt;pid&gt; directory owned by the supplied expectedUser.</div>
 </td>
 </tr>
 <tr id="i26" class="altColor">
 <td class="colFirst"><code>static boolean</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/utils/ServerUtils.html#isAnyProcessAlive-java.util.Collection-int-">isAnyProcessAlive</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Long.html?is-external=true" title="class or interface in java.lang">Long</a>&gt;&nbsp;pids,
                  int&nbsp;uid)</code>
 <div class="block">Are any of the processes alive and running for the specified userId.</div>
 </td>
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 <tr id="i27" class="rowColor">
 <td class="colFirst"><code>static boolean</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/utils/ServerUtils.html#isAnyProcessAlive-java.util.Collection-java.lang.String-">isAnyProcessAlive</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Long.html?is-external=true" title="class or interface in java.lang">Long</a>&gt;&nbsp;pids,
                  <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>&nbsp;user)</code>
 <div class="block">Are any of the processes alive and running for the specified user.</div>
 </td>
 </tr>
 <tr id="i28" class="altColor">
 <td class="colFirst"><code>static boolean</code></td>
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               <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>&nbsp;user)</code>
 <div class="block">Is a process alive and running?.</div>
 </td>
 </tr>
 <tr id="i29" class="rowColor">
 <td class="colFirst"><code>static boolean</code></td>
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 <div class="block">Check if the scheduler is resource aware or not.</div>
 </td>
 </tr>
 <tr id="i30" class="altColor">
 <td class="colFirst"><code>static void</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/utils/ServerUtils.html#killProcessWithSigTerm-java.lang.String-">killProcessWithSigTerm</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>&nbsp;pid)</code>&nbsp;</td>
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 <tr id="i31" class="rowColor">
 <td class="colFirst"><code>static long</code></td>
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                    <a href="../../../../org/apache/storm/blobstore/ClientBlobStore.html" title="class in org.apache.storm.blobstore">ClientBlobStore</a>&nbsp;cb)</code>&nbsp;</td>
 </tr>
 <tr id="i32" class="altColor">
 <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/javax/security/auth/Subject.html?is-external=true" title="class or interface in javax.security.auth">Subject</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/utils/ServerUtils.html#principalNameToSubject-java.lang.String-">principalNameToSubject</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>&nbsp;name)</code>&nbsp;</td>
 </tr>
 <tr id="i33" class="rowColor">
 <td class="colFirst"><code>static <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></code></td>
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 <tr id="i34" class="altColor">
 <td class="colFirst"><code>static void</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/utils/ServerUtils.html#sendSignalToProcess-long-int-">sendSignalToProcess</a></span>(long&nbsp;lpid,
                    int&nbsp;signum)</code>&nbsp;</td>
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 <tr id="i35" class="rowColor">
 <td class="colFirst"><code>static <a href="../../../../org/apache/storm/utils/ServerUtils.html" title="class in org.apache.storm.utils">ServerUtils</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/utils/ServerUtils.html#setInstance-org.apache.storm.utils.ServerUtils-">setInstance</a></span>(<a href="../../../../org/apache/storm/utils/ServerUtils.html" title="class in org.apache.storm.utils">ServerUtils</a>&nbsp;u)</code>
 <div class="block">Provide an instance of this class for delegates to use.</div>
 </td>
 </tr>
 <tr id="i36" class="altColor">
 <td class="colFirst"><code>static <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></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/utils/ServerUtils.html#shellCmd-java.util.List-">shellCmd</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<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>&gt;&nbsp;command)</code>
 <div class="block">Returns the combined string, escaped for posix shell.</div>
 </td>
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 <tr id="i37" class="rowColor">
 <td class="colFirst"><code>static void</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/utils/ServerUtils.html#unJar-java.io.File-java.io.File-">unJar</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</a>&nbsp;jarFile,
      <a href="https://docs.oracle.com/javase/8/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</a>&nbsp;toDir)</code>
 <div class="block">Unpack matching files from a jar.</div>
 </td>
 </tr>
 <tr id="i38" class="altColor">
 <td class="colFirst"><code>static void</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/utils/ServerUtils.html#unpack-java.io.File-java.io.File-boolean-">unpack</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</a>&nbsp;localrsrc,
       <a href="https://docs.oracle.com/javase/8/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</a>&nbsp;dst,
       boolean&nbsp;symLinksDisabled)</code>&nbsp;</td>
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 <tr id="i39" class="rowColor">
 <td class="colFirst"><code>static void</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/utils/ServerUtils.html#unTar-java.io.File-java.io.File-boolean-">unTar</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</a>&nbsp;inFile,
      <a href="https://docs.oracle.com/javase/8/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</a>&nbsp;untarDir,
      boolean&nbsp;symlinksDisabled)</code>
 <div class="block">Given a Tar File as input it will untar the file in a the untar directory passed as the second parameter <p/> This utility will untar &ldquo;.tar&rdquo; files and &ldquo;.tar.gz&rdquo;,&ldquo;tgz&rdquo; files.</div>
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 <tr id="i40" class="altColor">
 <td class="colFirst"><code>static void</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/utils/ServerUtils.html#unZip-java.io.File-java.io.File-">unZip</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</a>&nbsp;inFile,
      <a href="https://docs.oracle.com/javase/8/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</a>&nbsp;toDir)</code>
 <div class="block">Given a File input it will unzip the file in a the unzip directory passed as the second parameter.</div>
 </td>
 </tr>
 <tr id="i41" class="rowColor">
 <td class="colFirst"><code>static void</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/utils/ServerUtils.html#validateTopologyAckerBundleResource-java.util.Map-org.apache.storm.generated.StormTopology-java.lang.String-">validateTopologyAckerBundleResource</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;<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>,<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>&gt;&nbsp;topoConf,
                                    <a href="../../../../org/apache/storm/generated/StormTopology.html" title="class in org.apache.storm.generated">StormTopology</a>&nbsp;topology,
                                    <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>&nbsp;topoName)</code>
 <div class="block">RAS scheduler will try to distribute ackers evenly over workers by adding some ackers to each newly launched worker.</div>
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 <tr id="i42" class="altColor">
 <td class="colFirst"><code>static void</code></td>
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                                         <a href="../../../../org/apache/storm/generated/StormTopology.html" title="class in org.apache.storm.generated">StormTopology</a>&nbsp;topology,
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 <tr id="i43" class="rowColor">
 <td class="colFirst"><code>static <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></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/utils/ServerUtils.html#writeScript-java.lang.String-java.util.List-java.util.Map-">writeScript</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>&nbsp;dir,
            <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<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>&gt;&nbsp;command,
            <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;<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>,<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>&gt;&nbsp;environment)</code>
 <div class="block">Writes a posix shell script file to be executed in its own process.</div>
 </td>
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 <tr id="i44" class="altColor">
 <td class="colFirst"><code>static <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></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/utils/ServerUtils.html#writeScript-java.lang.String-java.util.List-java.util.Map-java.lang.String-">writeScript</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>&nbsp;dir,
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            <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>&nbsp;umask)</code>
 <div class="block">Writes a posix shell script file to be executed in its own process.</div>
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 <tr id="i45" class="rowColor">
 <td class="colFirst"><code>static boolean</code></td>
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                  <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>&nbsp;target)</code>
 <div class="block">Determines if a zip archive contains a particular directory.</div>
 </td>
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 <tr id="i46" class="altColor">
 <td class="colFirst"><code>static long</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/utils/ServerUtils.html#zipFileSize-java.io.File-">zipFileSize</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</a>&nbsp;myFile)</code>
 <div class="block">Given a zip File input it will return its size Only works for zip files whose uncompressed size is less than 4 GB, otherwise returns the size module 2^32, per gzip specifications.</div>
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 <dd><code>dir</code> - The input dir to get the disk space of this local dir</dd>
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 <dd><code>zipfile</code> - path to the zipped file</dd>
 <dd><code>target</code> - directory being looked for in the zip.</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>boolean whether or not the directory exists in the zip.</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
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 <div class="block"><p>Writes a posix shell script file to be executed in its own process.</p></div>
 <dl>
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 <dd><code>dir</code> - the directory under which the script is to be written</dd>
 <dd><code>command</code> - the command the script is to execute</dd>
 <dd><code>environment</code> - optional environment variables to set before running the script&rsquo;s command. May be null.</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the path to the script that has been written</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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 <div class="block"><p>Writes a posix shell script file to be executed in its own process.</p></div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>dir</code> - the directory under which the script is to be written</dd>
 <dd><code>command</code> - the command the script is to execute</dd>
 <dd><code>environment</code> - optional environment variables to set before running the script&rsquo;s command. May be null.</dd>
 <dd><code>umask</code> - umask to be set. It can be null.</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the path to the script that has been written</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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                          <a href="https://docs.oracle.com/javase/8/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</a>&nbsp;toDir)
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 <div class="block"><p>Unpack matching files from a jar. Entries inside the jar that do not match the given pattern will be skipped.</p></div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>jarFile</code> - the .jar file to unpack</dd>
 <dd><code>toDir</code> - the destination directory into which to unpack the jar</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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                          <a href="https://docs.oracle.com/javase/8/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</a>&nbsp;untarDir,
                          boolean&nbsp;symlinksDisabled)
                   throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
 <div class="block"><p>Given a Tar File as input it will untar the file in a the untar directory passed as the second parameter <p/> This utility will untar &ldquo;.tar&rdquo; files and &ldquo;.tar.gz&rdquo;,&ldquo;tgz&rdquo; files.</p></div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>inFile</code> - The tar file as input</dd>
 <dd><code>untarDir</code> - The untar directory where to untar the tar file</dd>
 <dd><code>symlinksDisabled</code> - true if symlinks should be disabled, else false</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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                           <a href="https://docs.oracle.com/javase/8/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</a>&nbsp;dst,
                           boolean&nbsp;symLinksDisabled)
                    throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
 <dl>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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                                   <a href="https://docs.oracle.com/javase/8/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</a>&nbsp;toDir,
                                   <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>&nbsp;prefix)
                            throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
 <div class="block"><p>Extracts the given file to the given directory. Only zip entries starting with the given prefix are extracted. The prefix is stripped off entry names before extraction.</p></div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>zipFile</code> - The zip file to extract</dd>
 <dd><code>toDir</code> - The directory to extract to</dd>
 <dd><code>prefix</code> - The prefix to look for in the zip file. If not null only paths starting with the prefix will be  extracted</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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 <pre>public static&nbsp;void&nbsp;unZip(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</a>&nbsp;inFile,
                          <a href="https://docs.oracle.com/javase/8/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</a>&nbsp;toDir)
                   throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
 <div class="block"><p>Given a File input it will unzip the file in a the unzip directory passed as the second parameter.</p></div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>inFile</code> - The zip file as input</dd>
 <dd><code>toDir</code> - The unzip directory where to unzip the zip file</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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                         throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
 <div class="block"><p>Given a zip File input it will return its size Only works for zip files whose uncompressed size is less than 4 GB, otherwise returns the size module 2^32, per gzip specifications.</p></div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>myFile</code> - The zip file as input</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>zip file size as a long</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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 <div class="block"><p>Check if the scheduler is resource aware or not.</p></div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>conf</code> - The configuration</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>True if it&rsquo;s resource aware; false otherwise</dd>
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                                                     <a href="../../../../org/apache/storm/generated/StormTopology.html" title="class in org.apache.storm.generated">StormTopology</a>&nbsp;topology)
                                              throws <a href="../../../../org/apache/storm/generated/InvalidTopologyException.html" title="class in org.apache.storm.generated">InvalidTopologyException</a></pre>
 <dl>
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                                                                <a href="../../../../org/apache/storm/generated/StormTopology.html" title="class in org.apache.storm.generated">StormTopology</a>&nbsp;topology)
                                                         throws <a href="../../../../org/apache/storm/generated/InvalidTopologyException.html" title="class in org.apache.storm.generated">InvalidTopologyException</a></pre>
 <dl>
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                                                           <a href="../../../../org/apache/storm/generated/StormTopology.html" title="class in org.apache.storm.generated">StormTopology</a>&nbsp;topology)
                                                    throws <a href="../../../../org/apache/storm/generated/InvalidTopologyException.html" title="class in org.apache.storm.generated">InvalidTopologyException</a></pre>
 <dl>
 <dt><span class="throwsLabel">Throws:</span></dt>
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                                           <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>&nbsp;component)
                                    throws <a href="../../../../org/apache/storm/generated/InvalidTopologyException.html" title="class in org.apache.storm.generated">InvalidTopologyException</a></pre>
 <dl>
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 <div class="block"><p>Get system free memory in megabytes.</p></div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>system free memory in megabytes</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - on I/O exception</dd>
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 <pre>public static&nbsp;boolean&nbsp;isProcessAlive(long&nbsp;pid,
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                               throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
 <div class="block"><p>Is a process alive and running?.</p></div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>pid</code> - the PID of the running process</dd>
 <dd><code>user</code> - the user that is expected to own that process</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>true if it is, else false</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - on any error</dd>
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 <pre>public static&nbsp;boolean&nbsp;isAnyProcessAlive(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Long.html?is-external=true" title="class or interface in java.lang">Long</a>&gt;&nbsp;pids,
                                         <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>&nbsp;user)
                                  throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
 <div class="block"><p>Are any of the processes alive and running for the specified user. If collection is empty or null then the return value is trivially false.</p></div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>pids</code> - the PIDs of the running processes</dd>
 <dd><code>user</code> - the user that is expected to own that process</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>true if any one of the processes is owned by user and alive, else false</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - on I/O exception</dd>
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                                         int&nbsp;uid)
                                  throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
 <div class="block"><p>Are any of the processes alive and running for the specified userId. If collection is empty or null then the return value is trivially false.</p></div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>pids</code> - the PIDs of the running processes</dd>
 <dd><code>uid</code> - the user that is expected to own that process</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>true if any one of the processes is owned by user and alive, else false</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - on I/O exception</dd>
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 <pre>public static&nbsp;int&nbsp;getUserId(<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>&nbsp;user)</pre>
 <div class="block"><p>Get the userId for a user name. This works on Posix systems by using &ldquo;id -u&rdquo; command. Throw IllegalArgumentException on Windows.</p></div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>user</code> - username to be converted to UID. This is optional, in which case current user is returned.</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>UID for the specified user (if supplied), else UID of current user, -1 upon Exception.</dd>
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 <div class="block"><p>Get the userId of the onwer of the path by running &ldquo;ls -dn path&rdquo; command. This command works on Posix systems only.</p></div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>fpath</code> - full path to the file or directory.</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>UID for the specified if successful, -1 upon failure.</dd>
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                                           <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>&nbsp;user,
                                           <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>&nbsp;workerId,
                                           <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Set.html?is-external=true" title="class or interface in java.util">Set</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Long.html?is-external=true" title="class or interface in java.lang">Long</a>&gt;&nbsp;pids)
                                    throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
 <div class="block"><p>Find if all processes for the user on workId are dead. This method attempts to optimize the calls by: <p>  <li>checking a collection of ProcessIds at once</li>  <li>using userId one Posix systems instead of user</li> </p></p></div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>true if all processes for the user are dead on the worker</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - if external commands have exception.</dd>
 </dl>
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 <pre>public static&nbsp;boolean&nbsp;isAnyPosixProcessPidDirAlive(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Long.html?is-external=true" title="class or interface in java.lang">Long</a>&gt;&nbsp;pids,
                                                    <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>&nbsp;user)
                                             throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
 <div class="block"><p>Find if the process is alive using the existence of /proc/&lt;pid&gt; directory owned by the supplied user. This is an alternative to &ldquo;ps -p pid -u uid&rdquo; command used in <a href="../../../../org/apache/storm/utils/ServerUtils.html#isAnyPosixProcessAlive-java.util.Collection-int-"><code>isAnyPosixProcessAlive(Collection, int)</code></a></p>
 <p>
 Processes are tracked using the existence of the directory "/proc/&lt;pid&gt;
 For each of the supplied PIDs, their PID directory is checked for existence and ownership
 by the specified uid.
 </p></div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>pids</code> - Process IDs that need to be monitored for liveness</dd>
 <dd><code>user</code> - the userId that is expected to own that process</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>true if any one of the processes is owned by user and alive, else false</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - on I/O exception</dd>
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 <pre>public static&nbsp;boolean&nbsp;isAnyPosixProcessPidDirAlive(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Long.html?is-external=true" title="class or interface in java.lang">Long</a>&gt;&nbsp;pids,
                                                    <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>&nbsp;expectedUser,
                                                    boolean&nbsp;mockFileOwnerToUid)
                                             throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
 <div class="block"><p>Find if the process is alive using the existence of /proc/&lt;pid&gt; directory owned by the supplied expectedUser. This is an alternative to &ldquo;ps -p pid -u uid&rdquo; command used in <a href="../../../../org/apache/storm/utils/ServerUtils.html#isAnyPosixProcessAlive-java.util.Collection-int-"><code>isAnyPosixProcessAlive(Collection, int)</code></a></p>
 <p>
 Processes are tracked using the existence of the directory "/proc/&lt;pid&gt;
 For each of the supplied PIDs, their PID directory is checked for existence and ownership
 by the specified uid.
 </p></div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>pids</code> - Process IDs that need to be monitored for liveness</dd>
 <dd><code>expectedUser</code> - the userId that is expected to own that process</dd>
 <dd><code>mockFileOwnerToUid</code> - if true (used for testing), then convert File.owner to UID</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>true if any one of the processes is owned by expectedUser and alive, else false</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - on I/O exception</dd>
 </dl>
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 <pre>public static&nbsp;void&nbsp;validateTopologyWorkerMaxHeapSizeConfigs(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;<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>,<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>&gt;&nbsp;stormConf,
                                                             <a href="../../../../org/apache/storm/generated/StormTopology.html" title="class in org.apache.storm.generated">StormTopology</a>&nbsp;topology,
                                                             double&nbsp;defaultWorkerMaxHeapSizeMb)
                                                      throws <a href="../../../../org/apache/storm/generated/InvalidTopologyException.html" title="class in org.apache.storm.generated">InvalidTopologyException</a></pre>
 <dl>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="../../../../org/apache/storm/generated/InvalidTopologyException.html" title="class in org.apache.storm.generated">InvalidTopologyException</a></code></dd>
 </dl>
 </li>
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 <pre>public static&nbsp;void&nbsp;validateTopologyAckerBundleResource(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;<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>,<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>&gt;&nbsp;topoConf,
                                                        <a href="../../../../org/apache/storm/generated/StormTopology.html" title="class in org.apache.storm.generated">StormTopology</a>&nbsp;topology,
                                                        <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>&nbsp;topoName)
                                                 throws <a href="../../../../org/apache/storm/generated/InvalidTopologyException.html" title="class in org.apache.storm.generated">InvalidTopologyException</a></pre>
 <div class="block"><p>RAS scheduler will try to distribute ackers evenly over workers by adding some ackers to each newly launched worker. Validations are performed here: (<a href="../../../../org/apache/storm/Config.html#TOPOLOGY_RAS_ACKER_EXECUTORS_PER_WORKER"><code>Config.TOPOLOGY_RAS_ACKER_EXECUTORS_PER_WORKER</code></a> * memory for an acker  + memory for the biggest topo executor) &lt; max worker heap memory.  When RAS tries to schedule an executor to a new worker,  it will put <a href="../../../../org/apache/storm/Config.html#TOPOLOGY_RAS_ACKER_EXECUTORS_PER_WORKER"><code>Config.TOPOLOGY_RAS_ACKER_EXECUTORS_PER_WORKER</code></a> ackers into the worker first.  So <a href="../../../../org/apache/storm/Config.html#TOPOLOGY_WORKER_MAX_HEAP_SIZE_MB"><code>Config.TOPOLOGY_WORKER_MAX_HEAP_SIZE_MB</code></a> need to be able to accommodate this.</p></div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>topoConf</code> - Topology conf</dd>
 <dd><code>topology</code> - Topology (not system topology)</dd>
 <dd><code>topoName</code> - The name of the topology</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="../../../../org/apache/storm/generated/InvalidTopologyException.html" title="class in org.apache.storm.generated">InvalidTopologyException</a></code></dd>
 </dl>
 </li>
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 </li>
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