You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@hbase.apache.org by gi...@apache.org on 2018/09/12 14:54:38 UTC
[37/49] hbase-site git commit: Published site at
3810ba2c6edfc531181ffc9e6c68396a0c2d2027.
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/705d69c4/devapidocs/src-html/org/apache/hadoop/hbase/master/snapshot/TakeSnapshotHandler.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/master/snapshot/TakeSnapshotHandler.html b/devapidocs/src-html/org/apache/hadoop/hbase/master/snapshot/TakeSnapshotHandler.html
index d2de64a..4ebdb3f 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/master/snapshot/TakeSnapshotHandler.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/master/snapshot/TakeSnapshotHandler.html
@@ -27,309 +27,338 @@
<span class="sourceLineNo">019</span><a name="line.19"></a>
<span class="sourceLineNo">020</span>import java.io.FileNotFoundException;<a name="line.20"></a>
<span class="sourceLineNo">021</span>import java.io.IOException;<a name="line.21"></a>
-<span class="sourceLineNo">022</span>import java.util.HashSet;<a name="line.22"></a>
-<span class="sourceLineNo">023</span>import java.util.List;<a name="line.23"></a>
-<span class="sourceLineNo">024</span>import java.util.Set;<a name="line.24"></a>
-<span class="sourceLineNo">025</span>import java.util.concurrent.CancellationException;<a name="line.25"></a>
-<span class="sourceLineNo">026</span>import java.util.concurrent.locks.ReentrantLock;<a name="line.26"></a>
-<span class="sourceLineNo">027</span><a name="line.27"></a>
-<span class="sourceLineNo">028</span>import org.apache.hadoop.conf.Configuration;<a name="line.28"></a>
-<span class="sourceLineNo">029</span>import org.apache.hadoop.fs.FileSystem;<a name="line.29"></a>
-<span class="sourceLineNo">030</span>import org.apache.hadoop.fs.Path;<a name="line.30"></a>
-<span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.MetaTableAccessor;<a name="line.31"></a>
-<span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.ServerName;<a name="line.32"></a>
-<span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.TableName;<a name="line.33"></a>
-<span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.34"></a>
-<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.client.TableDescriptor;<a name="line.35"></a>
-<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.errorhandling.ForeignException;<a name="line.36"></a>
-<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.errorhandling.ForeignExceptionDispatcher;<a name="line.37"></a>
-<span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.errorhandling.ForeignExceptionSnare;<a name="line.38"></a>
-<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.executor.EventHandler;<a name="line.39"></a>
-<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.executor.EventType;<a name="line.40"></a>
-<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.master.MasterServices;<a name="line.41"></a>
-<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.master.MetricsSnapshot;<a name="line.42"></a>
-<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.master.SnapshotSentinel;<a name="line.43"></a>
-<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.master.locking.LockManager;<a name="line.44"></a>
-<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.monitoring.MonitoredTask;<a name="line.45"></a>
-<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.monitoring.TaskMonitor;<a name="line.46"></a>
-<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.procedure2.LockType;<a name="line.47"></a>
-<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.snapshot.ClientSnapshotDescriptionUtils;<a name="line.48"></a>
-<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.snapshot.SnapshotCreationException;<a name="line.49"></a>
-<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.snapshot.SnapshotDescriptionUtils;<a name="line.50"></a>
-<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.snapshot.SnapshotManifest;<a name="line.51"></a>
-<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.util.FSUtils;<a name="line.52"></a>
-<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.53"></a>
-<span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.zookeeper.MetaTableLocator;<a name="line.54"></a>
-<span class="sourceLineNo">055</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.55"></a>
-<span class="sourceLineNo">056</span>import org.apache.zookeeper.KeeperException;<a name="line.56"></a>
-<span class="sourceLineNo">057</span>import org.slf4j.Logger;<a name="line.57"></a>
-<span class="sourceLineNo">058</span>import org.slf4j.LoggerFactory;<a name="line.58"></a>
-<span class="sourceLineNo">059</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.SnapshotProtos.SnapshotDescription;<a name="line.59"></a>
-<span class="sourceLineNo">060</span><a name="line.60"></a>
-<span class="sourceLineNo">061</span>/**<a name="line.61"></a>
-<span class="sourceLineNo">062</span> * A handler for taking snapshots from the master.<a name="line.62"></a>
-<span class="sourceLineNo">063</span> *<a name="line.63"></a>
-<span class="sourceLineNo">064</span> * This is not a subclass of TableEventHandler because using that would incur an extra hbase:meta scan.<a name="line.64"></a>
-<span class="sourceLineNo">065</span> *<a name="line.65"></a>
-<span class="sourceLineNo">066</span> * The {@link #snapshotRegions(List)} call should get implemented for each snapshot flavor.<a name="line.66"></a>
-<span class="sourceLineNo">067</span> */<a name="line.67"></a>
-<span class="sourceLineNo">068</span>@InterfaceAudience.Private<a name="line.68"></a>
-<span class="sourceLineNo">069</span>public abstract class TakeSnapshotHandler extends EventHandler implements SnapshotSentinel,<a name="line.69"></a>
-<span class="sourceLineNo">070</span> ForeignExceptionSnare {<a name="line.70"></a>
-<span class="sourceLineNo">071</span> private static final Logger LOG = LoggerFactory.getLogger(TakeSnapshotHandler.class);<a name="line.71"></a>
-<span class="sourceLineNo">072</span><a name="line.72"></a>
-<span class="sourceLineNo">073</span> private volatile boolean finished;<a name="line.73"></a>
-<span class="sourceLineNo">074</span><a name="line.74"></a>
-<span class="sourceLineNo">075</span> // none of these should ever be null<a name="line.75"></a>
-<span class="sourceLineNo">076</span> protected final MasterServices master;<a name="line.76"></a>
-<span class="sourceLineNo">077</span> protected final MetricsSnapshot metricsSnapshot = new MetricsSnapshot();<a name="line.77"></a>
-<span class="sourceLineNo">078</span> protected final SnapshotDescription snapshot;<a name="line.78"></a>
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-<span class="sourceLineNo">081</span> protected final Path rootDir;<a name="line.81"></a>
-<span class="sourceLineNo">082</span> private final Path snapshotDir;<a name="line.82"></a>
-<span class="sourceLineNo">083</span> protected final Path workingDir;<a name="line.83"></a>
-<span class="sourceLineNo">084</span> private final MasterSnapshotVerifier verifier;<a name="line.84"></a>
-<span class="sourceLineNo">085</span> protected final ForeignExceptionDispatcher monitor;<a name="line.85"></a>
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-<span class="sourceLineNo">087</span> protected final MonitoredTask status;<a name="line.87"></a>
-<span class="sourceLineNo">088</span> protected final TableName snapshotTable;<a name="line.88"></a>
-<span class="sourceLineNo">089</span> protected final SnapshotManifest snapshotManifest;<a name="line.89"></a>
-<span class="sourceLineNo">090</span> protected final SnapshotManager snapshotManager;<a name="line.90"></a>
-<span class="sourceLineNo">091</span><a name="line.91"></a>
-<span class="sourceLineNo">092</span> protected TableDescriptor htd;<a name="line.92"></a>
-<span class="sourceLineNo">093</span><a name="line.93"></a>
-<span class="sourceLineNo">094</span> /**<a name="line.94"></a>
-<span class="sourceLineNo">095</span> * @param snapshot descriptor of the snapshot to take<a name="line.95"></a>
-<span class="sourceLineNo">096</span> * @param masterServices master services provider<a name="line.96"></a>
-<span class="sourceLineNo">097</span> */<a name="line.97"></a>
-<span class="sourceLineNo">098</span> public TakeSnapshotHandler(SnapshotDescription snapshot, final MasterServices masterServices,<a name="line.98"></a>
-<span class="sourceLineNo">099</span> final SnapshotManager snapshotManager) {<a name="line.99"></a>
-<span class="sourceLineNo">100</span> super(masterServices, EventType.C_M_SNAPSHOT_TABLE);<a name="line.100"></a>
-<span class="sourceLineNo">101</span> assert snapshot != null : "SnapshotDescription must not be nul1";<a name="line.101"></a>
-<span class="sourceLineNo">102</span> assert masterServices != null : "MasterServices must not be nul1";<a name="line.102"></a>
-<span class="sourceLineNo">103</span><a name="line.103"></a>
-<span class="sourceLineNo">104</span> this.master = masterServices;<a name="line.104"></a>
-<span class="sourceLineNo">105</span> this.snapshot = snapshot;<a name="line.105"></a>
-<span class="sourceLineNo">106</span> this.snapshotManager = snapshotManager;<a name="line.106"></a>
-<span class="sourceLineNo">107</span> this.snapshotTable = TableName.valueOf(snapshot.getTable());<a name="line.107"></a>
-<span class="sourceLineNo">108</span> this.conf = this.master.getConfiguration();<a name="line.108"></a>
-<span class="sourceLineNo">109</span> this.fs = this.master.getMasterFileSystem().getFileSystem();<a name="line.109"></a>
-<span class="sourceLineNo">110</span> this.rootDir = this.master.getMasterFileSystem().getRootDir();<a name="line.110"></a>
-<span class="sourceLineNo">111</span> this.snapshotDir = SnapshotDescriptionUtils.getCompletedSnapshotDir(snapshot, rootDir);<a name="line.111"></a>
-<span class="sourceLineNo">112</span> this.workingDir = SnapshotDescriptionUtils.getWorkingSnapshotDir(snapshot, rootDir);<a name="line.112"></a>
-<span class="sourceLineNo">113</span> this.monitor = new ForeignExceptionDispatcher(snapshot.getName());<a name="line.113"></a>
-<span class="sourceLineNo">114</span> this.snapshotManifest = SnapshotManifest.create(conf, fs, workingDir, snapshot, monitor);<a name="line.114"></a>
-<span class="sourceLineNo">115</span><a name="line.115"></a>
-<span class="sourceLineNo">116</span> this.tableLock = master.getLockManager().createMasterLock(<a name="line.116"></a>
-<span class="sourceLineNo">117</span> snapshotTable, LockType.EXCLUSIVE,<a name="line.117"></a>
-<span class="sourceLineNo">118</span> this.getClass().getName() + ": take snapshot " + snapshot.getName());<a name="line.118"></a>
-<span class="sourceLineNo">119</span><a name="line.119"></a>
-<span class="sourceLineNo">120</span> // prepare the verify<a name="line.120"></a>
-<span class="sourceLineNo">121</span> this.verifier = new MasterSnapshotVerifier(masterServices, snapshot, rootDir);<a name="line.121"></a>
-<span class="sourceLineNo">122</span> // update the running tasks<a name="line.122"></a>
-<span class="sourceLineNo">123</span> this.status = TaskMonitor.get().createStatus(<a name="line.123"></a>
-<span class="sourceLineNo">124</span> "Taking " + snapshot.getType() + " snapshot on table: " + snapshotTable);<a name="line.124"></a>
-<span class="sourceLineNo">125</span> }<a name="line.125"></a>
-<span class="sourceLineNo">126</span><a name="line.126"></a>
-<span class="sourceLineNo">127</span> private TableDescriptor loadTableDescriptor()<a name="line.127"></a>
-<span class="sourceLineNo">128</span> throws FileNotFoundException, IOException {<a name="line.128"></a>
-<span class="sourceLineNo">129</span> TableDescriptor htd =<a name="line.129"></a>
-<span class="sourceLineNo">130</span> this.master.getTableDescriptors().get(snapshotTable);<a name="line.130"></a>
-<span class="sourceLineNo">131</span> if (htd == null) {<a name="line.131"></a>
-<span class="sourceLineNo">132</span> throw new IOException("TableDescriptor missing for " + snapshotTable);<a name="line.132"></a>
-<span class="sourceLineNo">133</span> }<a name="line.133"></a>
-<span class="sourceLineNo">134</span> return htd;<a name="line.134"></a>
-<span class="sourceLineNo">135</span> }<a name="line.135"></a>
-<span class="sourceLineNo">136</span><a name="line.136"></a>
-<span class="sourceLineNo">137</span> @Override<a name="line.137"></a>
-<span class="sourceLineNo">138</span> public TakeSnapshotHandler prepare() throws Exception {<a name="line.138"></a>
-<span class="sourceLineNo">139</span> super.prepare();<a name="line.139"></a>
-<span class="sourceLineNo">140</span> // after this, you should ensure to release this lock in case of exceptions<a name="line.140"></a>
-<span class="sourceLineNo">141</span> this.tableLock.acquire();<a name="line.141"></a>
-<span class="sourceLineNo">142</span> try {<a name="line.142"></a>
-<span class="sourceLineNo">143</span> this.htd = loadTableDescriptor(); // check that .tableinfo is present<a name="line.143"></a>
-<span class="sourceLineNo">144</span> } catch (Exception e) {<a name="line.144"></a>
-<span class="sourceLineNo">145</span> this.tableLock.release();<a name="line.145"></a>
-<span class="sourceLineNo">146</span> throw e;<a name="line.146"></a>
+<span class="sourceLineNo">022</span>import java.net.URI;<a name="line.22"></a>
+<span class="sourceLineNo">023</span>import java.util.HashSet;<a name="line.23"></a>
+<span class="sourceLineNo">024</span>import java.util.List;<a name="line.24"></a>
+<span class="sourceLineNo">025</span>import java.util.Set;<a name="line.25"></a>
+<span class="sourceLineNo">026</span>import java.util.concurrent.CancellationException;<a name="line.26"></a>
+<span class="sourceLineNo">027</span>import java.util.concurrent.locks.ReentrantLock;<a name="line.27"></a>
+<span class="sourceLineNo">028</span><a name="line.28"></a>
+<span class="sourceLineNo">029</span>import org.apache.hadoop.conf.Configuration;<a name="line.29"></a>
+<span class="sourceLineNo">030</span>import org.apache.hadoop.fs.FileSystem;<a name="line.30"></a>
+<span class="sourceLineNo">031</span>import org.apache.hadoop.fs.FileUtil;<a name="line.31"></a>
+<span class="sourceLineNo">032</span>import org.apache.hadoop.fs.Path;<a name="line.32"></a>
+<span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.MetaTableAccessor;<a name="line.33"></a>
+<span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.ServerName;<a name="line.34"></a>
+<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.TableName;<a name="line.35"></a>
+<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.36"></a>
+<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.client.TableDescriptor;<a name="line.37"></a>
+<span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.errorhandling.ForeignException;<a name="line.38"></a>
+<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.errorhandling.ForeignExceptionDispatcher;<a name="line.39"></a>
+<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.errorhandling.ForeignExceptionSnare;<a name="line.40"></a>
+<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.executor.EventHandler;<a name="line.41"></a>
+<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.executor.EventType;<a name="line.42"></a>
+<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.master.MasterServices;<a name="line.43"></a>
+<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.master.MetricsSnapshot;<a name="line.44"></a>
+<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.master.SnapshotSentinel;<a name="line.45"></a>
+<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.master.locking.LockManager;<a name="line.46"></a>
+<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.monitoring.MonitoredTask;<a name="line.47"></a>
+<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.monitoring.TaskMonitor;<a name="line.48"></a>
+<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.procedure2.LockType;<a name="line.49"></a>
+<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.snapshot.ClientSnapshotDescriptionUtils;<a name="line.50"></a>
+<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.snapshot.SnapshotCreationException;<a name="line.51"></a>
+<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.snapshot.SnapshotDescriptionUtils;<a name="line.52"></a>
+<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.snapshot.SnapshotManifest;<a name="line.53"></a>
+<span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.util.FSUtils;<a name="line.54"></a>
+<span class="sourceLineNo">055</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.55"></a>
+<span class="sourceLineNo">056</span>import org.apache.hadoop.hbase.zookeeper.MetaTableLocator;<a name="line.56"></a>
+<span class="sourceLineNo">057</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.57"></a>
+<span class="sourceLineNo">058</span>import org.apache.zookeeper.KeeperException;<a name="line.58"></a>
+<span class="sourceLineNo">059</span>import org.slf4j.Logger;<a name="line.59"></a>
+<span class="sourceLineNo">060</span>import org.slf4j.LoggerFactory;<a name="line.60"></a>
+<span class="sourceLineNo">061</span><a name="line.61"></a>
+<span class="sourceLineNo">062</span>import org.apache.hbase.thirdparty.com.google.common.base.Preconditions;<a name="line.62"></a>
+<span class="sourceLineNo">063</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.SnapshotProtos.SnapshotDescription;<a name="line.63"></a>
+<span class="sourceLineNo">064</span><a name="line.64"></a>
+<span class="sourceLineNo">065</span>/**<a name="line.65"></a>
+<span class="sourceLineNo">066</span> * A handler for taking snapshots from the master.<a name="line.66"></a>
+<span class="sourceLineNo">067</span> *<a name="line.67"></a>
+<span class="sourceLineNo">068</span> * This is not a subclass of TableEventHandler because using that would incur an extra hbase:meta scan.<a name="line.68"></a>
+<span class="sourceLineNo">069</span> *<a name="line.69"></a>
+<span class="sourceLineNo">070</span> * The {@link #snapshotRegions(List)} call should get implemented for each snapshot flavor.<a name="line.70"></a>
+<span class="sourceLineNo">071</span> */<a name="line.71"></a>
+<span class="sourceLineNo">072</span>@InterfaceAudience.Private<a name="line.72"></a>
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+<span class="sourceLineNo">074</span> ForeignExceptionSnare {<a name="line.74"></a>
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+<span class="sourceLineNo">076</span><a name="line.76"></a>
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+<span class="sourceLineNo">086</span> protected final Path rootDir;<a name="line.86"></a>
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+<span class="sourceLineNo">096</span><a name="line.96"></a>
+<span class="sourceLineNo">097</span> protected TableDescriptor htd;<a name="line.97"></a>
+<span class="sourceLineNo">098</span><a name="line.98"></a>
+<span class="sourceLineNo">099</span> /**<a name="line.99"></a>
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+<span class="sourceLineNo">101</span> * @param masterServices master services provider<a name="line.101"></a>
+<span class="sourceLineNo">102</span> * @throws IllegalArgumentException if the working snapshot directory set from the<a name="line.102"></a>
+<span class="sourceLineNo">103</span> * configuration is the same as the completed snapshot directory<a name="line.103"></a>
+<span class="sourceLineNo">104</span> * @throws IOException if the file system of the working snapshot directory cannot be<a name="line.104"></a>
+<span class="sourceLineNo">105</span> * determined<a name="line.105"></a>
+<span class="sourceLineNo">106</span> */<a name="line.106"></a>
+<span class="sourceLineNo">107</span> public TakeSnapshotHandler(SnapshotDescription snapshot, final MasterServices masterServices,<a name="line.107"></a>
+<span class="sourceLineNo">108</span> final SnapshotManager snapshotManager) throws IOException {<a name="line.108"></a>
+<span class="sourceLineNo">109</span> super(masterServices, EventType.C_M_SNAPSHOT_TABLE);<a name="line.109"></a>
+<span class="sourceLineNo">110</span> assert snapshot != null : "SnapshotDescription must not be nul1";<a name="line.110"></a>
+<span class="sourceLineNo">111</span> assert masterServices != null : "MasterServices must not be nul1";<a name="line.111"></a>
+<span class="sourceLineNo">112</span> this.master = masterServices;<a name="line.112"></a>
+<span class="sourceLineNo">113</span> this.conf = this.master.getConfiguration();<a name="line.113"></a>
+<span class="sourceLineNo">114</span> this.rootDir = this.master.getMasterFileSystem().getRootDir();<a name="line.114"></a>
+<span class="sourceLineNo">115</span> this.workingDir = SnapshotDescriptionUtils.getWorkingSnapshotDir(snapshot, rootDir, conf);<a name="line.115"></a>
+<span class="sourceLineNo">116</span> Preconditions.checkArgument(!SnapshotDescriptionUtils.isSubDirectoryOf(workingDir, rootDir) ||<a name="line.116"></a>
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