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 <pre><span class="source-line-no">001</span><span id="line-1">/*</span>
 <span class="source-line-no">002</span><span id="line-2"> * Licensed to the Apache Software Foundation (ASF) under one</span>
 <span class="source-line-no">003</span><span id="line-3"> * or more contributor license agreements.  See the NOTICE file</span>
 <span class="source-line-no">004</span><span id="line-4"> * distributed with this work for additional information</span>
 <span class="source-line-no">005</span><span id="line-5"> * regarding copyright ownership.  The ASF licenses this file</span>
 <span class="source-line-no">006</span><span id="line-6"> * to you under the Apache License, Version 2.0 (the</span>
 <span class="source-line-no">007</span><span id="line-7"> * "License"); you may not use this file except in compliance</span>
 <span class="source-line-no">008</span><span id="line-8"> * with the License.  You may obtain a copy of the License at</span>
 <span class="source-line-no">009</span><span id="line-9"> *</span>
 <span class="source-line-no">010</span><span id="line-10"> *     http://www.apache.org/licenses/LICENSE-2.0</span>
 <span class="source-line-no">011</span><span id="line-11"> *</span>
 <span class="source-line-no">012</span><span id="line-12"> * Unless required by applicable law or agreed to in writing, software</span>
 <span class="source-line-no">013</span><span id="line-13"> * distributed under the License is distributed on an "AS IS" BASIS,</span>
 <span class="source-line-no">014</span><span id="line-14"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span>
 <span class="source-line-no">015</span><span id="line-15"> * See the License for the specific language governing permissions and</span>
 <span class="source-line-no">016</span><span id="line-16"> * limitations under the License.</span>
 <span class="source-line-no">017</span><span id="line-17"> */</span>
 <span class="source-line-no">018</span><span id="line-18">package org.apache.hadoop.hbase.zookeeper;</span>
 <span class="source-line-no">019</span><span id="line-19"></span>
 <span class="source-line-no">020</span><span id="line-20">import java.io.IOException;</span>
 <span class="source-line-no">021</span><span id="line-21">import java.io.UnsupportedEncodingException;</span>
 <span class="source-line-no">022</span><span id="line-22">import java.net.URLDecoder;</span>
 <span class="source-line-no">023</span><span id="line-23">import java.net.URLEncoder;</span>
 <span class="source-line-no">024</span><span id="line-24">import org.apache.hadoop.fs.FileSystem;</span>
 <span class="source-line-no">025</span><span id="line-25">import org.apache.hadoop.fs.Path;</span>
 <span class="source-line-no">026</span><span id="line-26">import org.apache.hadoop.hbase.HConstants;</span>
 <span class="source-line-no">027</span><span id="line-27">import org.apache.yetus.audience.InterfaceAudience;</span>
 <span class="source-line-no">028</span><span id="line-28">import org.slf4j.Logger;</span>
 <span class="source-line-no">029</span><span id="line-29">import org.slf4j.LoggerFactory;</span>
 <span class="source-line-no">030</span><span id="line-30"></span>
 <span class="source-line-no">031</span><span id="line-31">/**</span>
 <span class="source-line-no">032</span><span id="line-32"> * Common methods and attributes used by SplitLogManager and SplitLogWorker running distributed</span>
 <span class="source-line-no">033</span><span id="line-33"> * splitting of WAL logs.</span>
 <span class="source-line-no">034</span><span id="line-34"> * @deprecated since 2.4.0 and 3.0.0 replaced by procedure-based WAL splitting; see SplitWALManager.</span>
 <span class="source-line-no">035</span><span id="line-35"> */</span>
 <span class="source-line-no">036</span><span id="line-36">@Deprecated</span>
 <span class="source-line-no">037</span><span id="line-37">@InterfaceAudience.Private</span>
 <span class="source-line-no">038</span><span id="line-38">public final class ZKSplitLog {</span>
 <span class="source-line-no">039</span><span id="line-39">  private static final Logger LOG = LoggerFactory.getLogger(ZKSplitLog.class);</span>
 <span class="source-line-no">040</span><span id="line-40"></span>
 <span class="source-line-no">041</span><span id="line-41">  private ZKSplitLog() {</span>
 <span class="source-line-no">042</span><span id="line-42">  }</span>
 <span class="source-line-no">043</span><span id="line-43"></span>
 <span class="source-line-no">044</span><span id="line-44">  /**</span>
 <span class="source-line-no">045</span><span id="line-45">   * Gets the full path node name for the log file being split. This method will url encode the</span>
 <span class="source-line-no">046</span><span id="line-46">   * filename.</span>
 <span class="source-line-no">047</span><span id="line-47">   * @param zkw      zk reference</span>
 <span class="source-line-no">048</span><span id="line-48">   * @param filename log file name (only the basename)</span>
 <span class="source-line-no">049</span><span id="line-49">   */</span>
 <span class="source-line-no">050</span><span id="line-50">  public static String getEncodedNodeName(ZKWatcher zkw, String filename) {</span>
 <span class="source-line-no">051</span><span id="line-51">    return ZNodePaths.joinZNode(zkw.getZNodePaths().splitLogZNode, encode(filename));</span>
 <span class="source-line-no">052</span><span id="line-52">  }</span>
 <span class="source-line-no">053</span><span id="line-53"></span>
 <span class="source-line-no">054</span><span id="line-54">  public static String getFileName(String node) {</span>
 <span class="source-line-no">055</span><span id="line-55">    String basename = node.substring(node.lastIndexOf('/') + 1);</span>
 <span class="source-line-no">056</span><span id="line-56">    return decode(basename);</span>
 <span class="source-line-no">057</span><span id="line-57">  }</span>
 <span class="source-line-no">058</span><span id="line-58"></span>
 <span class="source-line-no">059</span><span id="line-59">  static String encode(String s) {</span>
 <span class="source-line-no">060</span><span id="line-60">    try {</span>
 <span class="source-line-no">061</span><span id="line-61">      return URLEncoder.encode(s, "UTF-8");</span>
 <span class="source-line-no">062</span><span id="line-62">    } catch (UnsupportedEncodingException e) {</span>
 <span class="source-line-no">063</span><span id="line-63">      throw new RuntimeException("URLENCODER doesn't support UTF-8");</span>
 <span class="source-line-no">064</span><span id="line-64">    }</span>
 <span class="source-line-no">065</span><span id="line-65">  }</span>
 <span class="source-line-no">066</span><span id="line-66"></span>
 <span class="source-line-no">067</span><span id="line-67">  static String decode(String s) {</span>
 <span class="source-line-no">068</span><span id="line-68">    try {</span>
 <span class="source-line-no">069</span><span id="line-69">      return URLDecoder.decode(s, "UTF-8");</span>
 <span class="source-line-no">070</span><span id="line-70">    } catch (UnsupportedEncodingException e) {</span>
 <span class="source-line-no">071</span><span id="line-71">      throw new RuntimeException("URLDecoder doesn't support UTF-8");</span>
 <span class="source-line-no">072</span><span id="line-72">    }</span>
 <span class="source-line-no">073</span><span id="line-73">  }</span>
 <span class="source-line-no">074</span><span id="line-74"></span>
 <span class="source-line-no">075</span><span id="line-75">  public static String getRescanNode(ZKWatcher zkw) {</span>
 <span class="source-line-no">076</span><span id="line-76">    return ZNodePaths.joinZNode(zkw.getZNodePaths().splitLogZNode, "RESCAN");</span>
 <span class="source-line-no">077</span><span id="line-77">  }</span>
 <span class="source-line-no">078</span><span id="line-78"></span>
 <span class="source-line-no">079</span><span id="line-79">  /**</span>
 <span class="source-line-no">080</span><span id="line-80">   * @param name the last part in path</span>
 <span class="source-line-no">081</span><span id="line-81">   * @return whether the node name represents a rescan node</span>
 <span class="source-line-no">082</span><span id="line-82">   */</span>
 <span class="source-line-no">083</span><span id="line-83">  public static boolean isRescanNode(String name) {</span>
 <span class="source-line-no">084</span><span id="line-84">    return name.startsWith("RESCAN");</span>
 <span class="source-line-no">085</span><span id="line-85">  }</span>
 <span class="source-line-no">086</span><span id="line-86"></span>
 <span class="source-line-no">087</span><span id="line-87">  /**</span>
 <span class="source-line-no">088</span><span id="line-88">   * Checks if the given path represents a rescan node.</span>
 <span class="source-line-no">089</span><span id="line-89">   * @param zkw  reference to the {@link ZKWatcher} which also contains configuration and constants</span>
 <span class="source-line-no">090</span><span id="line-90">   * @param path the absolute path, starts with '/'</span>
 <span class="source-line-no">091</span><span id="line-91">   * @return whether the path represents a rescan node</span>
 <span class="source-line-no">092</span><span id="line-92">   */</span>
 <span class="source-line-no">093</span><span id="line-93">  public static boolean isRescanNode(ZKWatcher zkw, String path) {</span>
 <span class="source-line-no">094</span><span id="line-94">    String prefix = getRescanNode(zkw);</span>
 <span class="source-line-no">095</span><span id="line-95">    if (path.length() &lt;= prefix.length()) {</span>
 <span class="source-line-no">096</span><span id="line-96">      return false;</span>
 <span class="source-line-no">097</span><span id="line-97">    }</span>
 <span class="source-line-no">098</span><span id="line-98">    for (int i = 0; i &lt; prefix.length(); i++) {</span>
 <span class="source-line-no">099</span><span id="line-99">      if (prefix.charAt(i) != path.charAt(i)) {</span>
 <span class="source-line-no">100</span><span id="line-100">        return false;</span>
 <span class="source-line-no">101</span><span id="line-101">      }</span>
 <span class="source-line-no">102</span><span id="line-102">    }</span>
 <span class="source-line-no">103</span><span id="line-103">    return true;</span>
 <span class="source-line-no">104</span><span id="line-104">  }</span>
 <span class="source-line-no">105</span><span id="line-105"></span>
 <span class="source-line-no">106</span><span id="line-106">  public static Path getSplitLogDir(Path rootdir, String tmpname) {</span>
 <span class="source-line-no">107</span><span id="line-107">    return new Path(new Path(rootdir, HConstants.SPLIT_LOGDIR_NAME), tmpname);</span>
 <span class="source-line-no">108</span><span id="line-108">  }</span>
 <span class="source-line-no">109</span><span id="line-109"></span>
 <span class="source-line-no">110</span><span id="line-110">  public static void markCorrupted(Path rootdir, String logFileName, FileSystem fs) {</span>
 <span class="source-line-no">111</span><span id="line-111">    Path file = new Path(getSplitLogDir(rootdir, logFileName), "corrupt");</span>
 <span class="source-line-no">112</span><span id="line-112">    try {</span>
 <span class="source-line-no">113</span><span id="line-113">      fs.createNewFile(file);</span>
 <span class="source-line-no">114</span><span id="line-114">    } catch (IOException e) {</span>
 <span class="source-line-no">115</span><span id="line-115">      LOG.warn("Could not flag a log file as corrupted. Failed to create " + file, e);</span>
 <span class="source-line-no">116</span><span id="line-116">    }</span>
 <span class="source-line-no">117</span><span id="line-117">  }</span>
 <span class="source-line-no">118</span><span id="line-118"></span>
 <span class="source-line-no">119</span><span id="line-119">  public static boolean isCorrupted(Path rootdir, String logFileName, FileSystem fs)</span>
 <span class="source-line-no">120</span><span id="line-120">    throws IOException {</span>
 <span class="source-line-no">121</span><span id="line-121">    Path file = new Path(getSplitLogDir(rootdir, logFileName), "corrupt");</span>
 <span class="source-line-no">122</span><span id="line-122">    boolean isCorrupt;</span>
 <span class="source-line-no">123</span><span id="line-123">    isCorrupt = fs.exists(file);</span>
 <span class="source-line-no">124</span><span id="line-124">    return isCorrupt;</span>
 <span class="source-line-no">125</span><span id="line-125">  }</span>
 <span class="source-line-no">126</span><span id="line-126">}</span>


 </pre>
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	<meta name="viewport" content="width=device-width, initial-scale=1">
	<meta name="description" content="source: package: org.apache.hadoop.hbase.zookeeper, class: ZKSplitLog">
	<meta name="generator" content="javadoc/SourceToHTMLConverter">
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	<pre><span class="source-line-no">001</span><span id="line-1">/*</span>
	<span class="source-line-no">002</span><span id="line-2"> * Licensed to the Apache Software Foundation (ASF) under one</span>
	<span class="source-line-no">003</span><span id="line-3"> * or more contributor license agreements. See the NOTICE file</span>
	<span class="source-line-no">004</span><span id="line-4"> * distributed with this work for additional information</span>
	<span class="source-line-no">005</span><span id="line-5"> * regarding copyright ownership. The ASF licenses this file</span>
	<span class="source-line-no">006</span><span id="line-6"> * to you under the Apache License, Version 2.0 (the</span>
	<span class="source-line-no">007</span><span id="line-7"> * "License"); you may not use this file except in compliance</span>
	<span class="source-line-no">008</span><span id="line-8"> * with the License. You may obtain a copy of the License at</span>
	<span class="source-line-no">009</span><span id="line-9"> *</span>
	<span class="source-line-no">010</span><span id="line-10"> * http://www.apache.org/licenses/LICENSE-2.0</span>
	<span class="source-line-no">011</span><span id="line-11"> *</span>
	<span class="source-line-no">012</span><span id="line-12"> * Unless required by applicable law or agreed to in writing, software</span>
	<span class="source-line-no">013</span><span id="line-13"> * distributed under the License is distributed on an "AS IS" BASIS,</span>
	<span class="source-line-no">014</span><span id="line-14"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span>
	<span class="source-line-no">015</span><span id="line-15"> * See the License for the specific language governing permissions and</span>
	<span class="source-line-no">016</span><span id="line-16"> * limitations under the License.</span>
	<span class="source-line-no">017</span><span id="line-17"> */</span>
	<span class="source-line-no">018</span><span id="line-18">package org.apache.hadoop.hbase.zookeeper;</span>
	<span class="source-line-no">019</span><span id="line-19"></span>
	<span class="source-line-no">020</span><span id="line-20">import java.io.IOException;</span>
	<span class="source-line-no">021</span><span id="line-21">import java.io.UnsupportedEncodingException;</span>
	<span class="source-line-no">022</span><span id="line-22">import java.net.URLDecoder;</span>
	<span class="source-line-no">023</span><span id="line-23">import java.net.URLEncoder;</span>
	<span class="source-line-no">024</span><span id="line-24">import org.apache.hadoop.fs.FileSystem;</span>
	<span class="source-line-no">025</span><span id="line-25">import org.apache.hadoop.fs.Path;</span>
	<span class="source-line-no">026</span><span id="line-26">import org.apache.hadoop.hbase.HConstants;</span>
	<span class="source-line-no">027</span><span id="line-27">import org.apache.yetus.audience.InterfaceAudience;</span>
	<span class="source-line-no">028</span><span id="line-28">import org.slf4j.Logger;</span>
	<span class="source-line-no">029</span><span id="line-29">import org.slf4j.LoggerFactory;</span>
	<span class="source-line-no">030</span><span id="line-30"></span>
	<span class="source-line-no">031</span><span id="line-31">/**</span>
	<span class="source-line-no">032</span><span id="line-32"> * Common methods and attributes used by SplitLogManager and SplitLogWorker running distributed</span>
	<span class="source-line-no">033</span><span id="line-33"> * splitting of WAL logs.</span>
	<span class="source-line-no">034</span><span id="line-34"> * @deprecated since 2.4.0 and 3.0.0 replaced by procedure-based WAL splitting; see SplitWALManager.</span>
	<span class="source-line-no">035</span><span id="line-35"> */</span>
	<span class="source-line-no">036</span><span id="line-36">@Deprecated</span>
	<span class="source-line-no">037</span><span id="line-37">@InterfaceAudience.Private</span>
	<span class="source-line-no">038</span><span id="line-38">public final class ZKSplitLog {</span>
	<span class="source-line-no">039</span><span id="line-39"> private static final Logger LOG = LoggerFactory.getLogger(ZKSplitLog.class);</span>
	<span class="source-line-no">040</span><span id="line-40"></span>
	<span class="source-line-no">041</span><span id="line-41"> private ZKSplitLog() {</span>
	<span class="source-line-no">042</span><span id="line-42"> }</span>
	<span class="source-line-no">043</span><span id="line-43"></span>
	<span class="source-line-no">044</span><span id="line-44"> /**</span>
	<span class="source-line-no">045</span><span id="line-45"> * Gets the full path node name for the log file being split. This method will url encode the</span>
	<span class="source-line-no">046</span><span id="line-46"> * filename.</span>
	<span class="source-line-no">047</span><span id="line-47"> * @param zkw zk reference</span>
	<span class="source-line-no">048</span><span id="line-48"> * @param filename log file name (only the basename)</span>
	<span class="source-line-no">049</span><span id="line-49"> */</span>
	<span class="source-line-no">050</span><span id="line-50"> public static String getEncodedNodeName(ZKWatcher zkw, String filename) {</span>
	<span class="source-line-no">051</span><span id="line-51"> return ZNodePaths.joinZNode(zkw.getZNodePaths().splitLogZNode, encode(filename));</span>
	<span class="source-line-no">052</span><span id="line-52"> }</span>
	<span class="source-line-no">053</span><span id="line-53"></span>
	<span class="source-line-no">054</span><span id="line-54"> public static String getFileName(String node) {</span>
	<span class="source-line-no">055</span><span id="line-55"> String basename = node.substring(node.lastIndexOf('/') + 1);</span>
	<span class="source-line-no">056</span><span id="line-56"> return decode(basename);</span>
	<span class="source-line-no">057</span><span id="line-57"> }</span>
	<span class="source-line-no">058</span><span id="line-58"></span>
	<span class="source-line-no">059</span><span id="line-59"> static String encode(String s) {</span>
	<span class="source-line-no">060</span><span id="line-60"> try {</span>
	<span class="source-line-no">061</span><span id="line-61"> return URLEncoder.encode(s, "UTF-8");</span>
	<span class="source-line-no">062</span><span id="line-62"> } catch (UnsupportedEncodingException e) {</span>
	<span class="source-line-no">063</span><span id="line-63"> throw new RuntimeException("URLENCODER doesn't support UTF-8");</span>
	<span class="source-line-no">064</span><span id="line-64"> }</span>
	<span class="source-line-no">065</span><span id="line-65"> }</span>
	<span class="source-line-no">066</span><span id="line-66"></span>
	<span class="source-line-no">067</span><span id="line-67"> static String decode(String s) {</span>
	<span class="source-line-no">068</span><span id="line-68"> try {</span>
	<span class="source-line-no">069</span><span id="line-69"> return URLDecoder.decode(s, "UTF-8");</span>
	<span class="source-line-no">070</span><span id="line-70"> } catch (UnsupportedEncodingException e) {</span>
	<span class="source-line-no">071</span><span id="line-71"> throw new RuntimeException("URLDecoder doesn't support UTF-8");</span>
	<span class="source-line-no">072</span><span id="line-72"> }</span>
	<span class="source-line-no">073</span><span id="line-73"> }</span>
	<span class="source-line-no">074</span><span id="line-74"></span>
	<span class="source-line-no">075</span><span id="line-75"> public static String getRescanNode(ZKWatcher zkw) {</span>
	<span class="source-line-no">076</span><span id="line-76"> return ZNodePaths.joinZNode(zkw.getZNodePaths().splitLogZNode, "RESCAN");</span>
	<span class="source-line-no">077</span><span id="line-77"> }</span>
	<span class="source-line-no">078</span><span id="line-78"></span>
	<span class="source-line-no">079</span><span id="line-79"> /**</span>
	<span class="source-line-no">080</span><span id="line-80"> * @param name the last part in path</span>
	<span class="source-line-no">081</span><span id="line-81"> * @return whether the node name represents a rescan node</span>
	<span class="source-line-no">082</span><span id="line-82"> */</span>
	<span class="source-line-no">083</span><span id="line-83"> public static boolean isRescanNode(String name) {</span>
	<span class="source-line-no">084</span><span id="line-84"> return name.startsWith("RESCAN");</span>
	<span class="source-line-no">085</span><span id="line-85"> }</span>
	<span class="source-line-no">086</span><span id="line-86"></span>
	<span class="source-line-no">087</span><span id="line-87"> /**</span>
	<span class="source-line-no">088</span><span id="line-88"> * Checks if the given path represents a rescan node.</span>
	<span class="source-line-no">089</span><span id="line-89"> * @param zkw reference to the {@link ZKWatcher} which also contains configuration and constants</span>
	<span class="source-line-no">090</span><span id="line-90"> * @param path the absolute path, starts with '/'</span>
	<span class="source-line-no">091</span><span id="line-91"> * @return whether the path represents a rescan node</span>
	<span class="source-line-no">092</span><span id="line-92"> */</span>
	<span class="source-line-no">093</span><span id="line-93"> public static boolean isRescanNode(ZKWatcher zkw, String path) {</span>
	<span class="source-line-no">094</span><span id="line-94"> String prefix = getRescanNode(zkw);</span>
	<span class="source-line-no">095</span><span id="line-95"> if (path.length() <= prefix.length()) {</span>
	<span class="source-line-no">096</span><span id="line-96"> return false;</span>
	<span class="source-line-no">097</span><span id="line-97"> }</span>
	<span class="source-line-no">098</span><span id="line-98"> for (int i = 0; i < prefix.length(); i++) {</span>
	<span class="source-line-no">099</span><span id="line-99"> if (prefix.charAt(i) != path.charAt(i)) {</span>
	<span class="source-line-no">100</span><span id="line-100"> return false;</span>
	<span class="source-line-no">101</span><span id="line-101"> }</span>
	<span class="source-line-no">102</span><span id="line-102"> }</span>
	<span class="source-line-no">103</span><span id="line-103"> return true;</span>
	<span class="source-line-no">104</span><span id="line-104"> }</span>
	<span class="source-line-no">105</span><span id="line-105"></span>
	<span class="source-line-no">106</span><span id="line-106"> public static Path getSplitLogDir(Path rootdir, String tmpname) {</span>
	<span class="source-line-no">107</span><span id="line-107"> return new Path(new Path(rootdir, HConstants.SPLIT_LOGDIR_NAME), tmpname);</span>
	<span class="source-line-no">108</span><span id="line-108"> }</span>
	<span class="source-line-no">109</span><span id="line-109"></span>
	<span class="source-line-no">110</span><span id="line-110"> public static void markCorrupted(Path rootdir, String logFileName, FileSystem fs) {</span>
	<span class="source-line-no">111</span><span id="line-111"> Path file = new Path(getSplitLogDir(rootdir, logFileName), "corrupt");</span>
	<span class="source-line-no">112</span><span id="line-112"> try {</span>
	<span class="source-line-no">113</span><span id="line-113"> fs.createNewFile(file);</span>
	<span class="source-line-no">114</span><span id="line-114"> } catch (IOException e) {</span>
	<span class="source-line-no">115</span><span id="line-115"> LOG.warn("Could not flag a log file as corrupted. Failed to create " + file, e);</span>
	<span class="source-line-no">116</span><span id="line-116"> }</span>
	<span class="source-line-no">117</span><span id="line-117"> }</span>
	<span class="source-line-no">118</span><span id="line-118"></span>
	<span class="source-line-no">119</span><span id="line-119"> public static boolean isCorrupted(Path rootdir, String logFileName, FileSystem fs)</span>
	<span class="source-line-no">120</span><span id="line-120"> throws IOException {</span>
	<span class="source-line-no">121</span><span id="line-121"> Path file = new Path(getSplitLogDir(rootdir, logFileName), "corrupt");</span>
	<span class="source-line-no">122</span><span id="line-122"> boolean isCorrupt;</span>
	<span class="source-line-no">123</span><span id="line-123"> isCorrupt = fs.exists(file);</span>
	<span class="source-line-no">124</span><span id="line-124"> return isCorrupt;</span>
	<span class="source-line-no">125</span><span id="line-125"> }</span>
	<span class="source-line-no">126</span><span id="line-126">}</span>




























































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