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Posted to commits@hbase.apache.org by gi...@apache.org on 2018/02/06 15:14:09 UTC
[19/26] hbase-site git commit: Published site at .
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/ac54a6a8/devapidocs/src-html/org/apache/hadoop/hbase/master/snapshot/EnabledTableSnapshotHandler.html
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diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/master/snapshot/EnabledTableSnapshotHandler.html b/devapidocs/src-html/org/apache/hadoop/hbase/master/snapshot/EnabledTableSnapshotHandler.html
index 2fdd064..1e51d8f 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/master/snapshot/EnabledTableSnapshotHandler.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/master/snapshot/EnabledTableSnapshotHandler.html
@@ -32,113 +32,115 @@
<span class="sourceLineNo">024</span><a name="line.24"></a>
<span class="sourceLineNo">025</span>import org.apache.hadoop.hbase.ServerName;<a name="line.25"></a>
<span class="sourceLineNo">026</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.26"></a>
-<span class="sourceLineNo">027</span>import org.apache.hadoop.hbase.errorhandling.ForeignException;<a name="line.27"></a>
-<span class="sourceLineNo">028</span>import org.apache.hadoop.hbase.master.MasterServices;<a name="line.28"></a>
-<span class="sourceLineNo">029</span>import org.apache.hadoop.hbase.mob.MobUtils;<a name="line.29"></a>
-<span class="sourceLineNo">030</span>import org.apache.hadoop.hbase.procedure.Procedure;<a name="line.30"></a>
-<span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.procedure.ProcedureCoordinator;<a name="line.31"></a>
-<span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.snapshot.HBaseSnapshotException;<a name="line.32"></a>
-<span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.33"></a>
-<span class="sourceLineNo">034</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.34"></a>
-<span class="sourceLineNo">035</span>import org.slf4j.Logger;<a name="line.35"></a>
-<span class="sourceLineNo">036</span>import org.slf4j.LoggerFactory;<a name="line.36"></a>
-<span class="sourceLineNo">037</span>import org.apache.hbase.thirdparty.com.google.common.collect.Lists;<a name="line.37"></a>
-<span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.SnapshotProtos.SnapshotDescription;<a name="line.38"></a>
-<span class="sourceLineNo">039</span><a name="line.39"></a>
-<span class="sourceLineNo">040</span>/**<a name="line.40"></a>
-<span class="sourceLineNo">041</span> * Handle the master side of taking a snapshot of an online table, regardless of snapshot type.<a name="line.41"></a>
-<span class="sourceLineNo">042</span> * Uses a {@link Procedure} to run the snapshot across all the involved region servers.<a name="line.42"></a>
-<span class="sourceLineNo">043</span> * @see ProcedureCoordinator<a name="line.43"></a>
-<span class="sourceLineNo">044</span> */<a name="line.44"></a>
-<span class="sourceLineNo">045</span>@InterfaceAudience.Private<a name="line.45"></a>
-<span class="sourceLineNo">046</span>public class EnabledTableSnapshotHandler extends TakeSnapshotHandler {<a name="line.46"></a>
-<span class="sourceLineNo">047</span><a name="line.47"></a>
-<span class="sourceLineNo">048</span> private static final Logger LOG = LoggerFactory.getLogger(EnabledTableSnapshotHandler.class);<a name="line.48"></a>
-<span class="sourceLineNo">049</span> private final ProcedureCoordinator coordinator;<a name="line.49"></a>
-<span class="sourceLineNo">050</span><a name="line.50"></a>
-<span class="sourceLineNo">051</span> public EnabledTableSnapshotHandler(SnapshotDescription snapshot, MasterServices master,<a name="line.51"></a>
-<span class="sourceLineNo">052</span> final SnapshotManager manager) {<a name="line.52"></a>
-<span class="sourceLineNo">053</span> super(snapshot, master, manager);<a name="line.53"></a>
-<span class="sourceLineNo">054</span> this.coordinator = manager.getCoordinator();<a name="line.54"></a>
-<span class="sourceLineNo">055</span> }<a name="line.55"></a>
-<span class="sourceLineNo">056</span><a name="line.56"></a>
-<span class="sourceLineNo">057</span> @Override<a name="line.57"></a>
-<span class="sourceLineNo">058</span> public EnabledTableSnapshotHandler prepare() throws Exception {<a name="line.58"></a>
-<span class="sourceLineNo">059</span> return (EnabledTableSnapshotHandler) super.prepare();<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> // TODO consider switching over to using regionnames, rather than server names. This would allow<a name="line.62"></a>
-<span class="sourceLineNo">063</span> // regions to migrate during a snapshot, and then be involved when they are ready. Still want to<a name="line.63"></a>
-<span class="sourceLineNo">064</span> // enforce a snapshot time constraints, but lets us be potentially a bit more robust.<a name="line.64"></a>
-<span class="sourceLineNo">065</span><a name="line.65"></a>
-<span class="sourceLineNo">066</span> /**<a name="line.66"></a>
-<span class="sourceLineNo">067</span> * This method kicks off a snapshot procedure. Other than that it hangs around for various<a name="line.67"></a>
-<span class="sourceLineNo">068</span> * phases to complete.<a name="line.68"></a>
-<span class="sourceLineNo">069</span> */<a name="line.69"></a>
-<span class="sourceLineNo">070</span> @Override<a name="line.70"></a>
-<span class="sourceLineNo">071</span> protected void snapshotRegions(List<Pair<RegionInfo, ServerName>> regions)<a name="line.71"></a>
-<span class="sourceLineNo">072</span> throws HBaseSnapshotException, IOException {<a name="line.72"></a>
-<span class="sourceLineNo">073</span> Set<String> regionServers = new HashSet<>(regions.size());<a name="line.73"></a>
-<span class="sourceLineNo">074</span> for (Pair<RegionInfo, ServerName> region : regions) {<a name="line.74"></a>
-<span class="sourceLineNo">075</span> if (region != null && region.getFirst() != null && region.getSecond() != null) {<a name="line.75"></a>
-<span class="sourceLineNo">076</span> RegionInfo hri = region.getFirst();<a name="line.76"></a>
-<span class="sourceLineNo">077</span> if (hri.isOffline() && (hri.isSplit() || hri.isSplitParent())) continue;<a name="line.77"></a>
-<span class="sourceLineNo">078</span> regionServers.add(region.getSecond().toString());<a name="line.78"></a>
-<span class="sourceLineNo">079</span> }<a name="line.79"></a>
-<span class="sourceLineNo">080</span> }<a name="line.80"></a>
-<span class="sourceLineNo">081</span><a name="line.81"></a>
-<span class="sourceLineNo">082</span> // start the snapshot on the RS<a name="line.82"></a>
-<span class="sourceLineNo">083</span> Procedure proc = coordinator.startProcedure(this.monitor, this.snapshot.getName(),<a name="line.83"></a>
-<span class="sourceLineNo">084</span> this.snapshot.toByteArray(), Lists.newArrayList(regionServers));<a name="line.84"></a>
-<span class="sourceLineNo">085</span> if (proc == null) {<a name="line.85"></a>
-<span class="sourceLineNo">086</span> String msg = "Failed to submit distributed procedure for snapshot '"<a name="line.86"></a>
-<span class="sourceLineNo">087</span> + snapshot.getName() + "'";<a name="line.87"></a>
-<span class="sourceLineNo">088</span> LOG.error(msg);<a name="line.88"></a>
-<span class="sourceLineNo">089</span> throw new HBaseSnapshotException(msg);<a name="line.89"></a>
-<span class="sourceLineNo">090</span> }<a name="line.90"></a>
-<span class="sourceLineNo">091</span><a name="line.91"></a>
-<span class="sourceLineNo">092</span> try {<a name="line.92"></a>
-<span class="sourceLineNo">093</span> // wait for the snapshot to complete. A timer thread is kicked off that should cancel this<a name="line.93"></a>
-<span class="sourceLineNo">094</span> // if it takes too long.<a name="line.94"></a>
-<span class="sourceLineNo">095</span> proc.waitForCompleted();<a name="line.95"></a>
-<span class="sourceLineNo">096</span> LOG.info("Done waiting - online snapshot for " + this.snapshot.getName());<a name="line.96"></a>
-<span class="sourceLineNo">097</span><a name="line.97"></a>
-<span class="sourceLineNo">098</span> // Take the offline regions as disabled<a name="line.98"></a>
-<span class="sourceLineNo">099</span> for (Pair<RegionInfo, ServerName> region : regions) {<a name="line.99"></a>
-<span class="sourceLineNo">100</span> RegionInfo regionInfo = region.getFirst();<a name="line.100"></a>
-<span class="sourceLineNo">101</span> if (regionInfo.isOffline() && (regionInfo.isSplit() || regionInfo.isSplitParent())) {<a name="line.101"></a>
-<span class="sourceLineNo">102</span> LOG.info("Take disabled snapshot of offline region=" + regionInfo);<a name="line.102"></a>
-<span class="sourceLineNo">103</span> snapshotDisabledRegion(regionInfo);<a name="line.103"></a>
-<span class="sourceLineNo">104</span> }<a name="line.104"></a>
-<span class="sourceLineNo">105</span> }<a name="line.105"></a>
-<span class="sourceLineNo">106</span> // handle the mob files if any.<a name="line.106"></a>
-<span class="sourceLineNo">107</span> boolean mobEnabled = MobUtils.hasMobColumns(htd);<a name="line.107"></a>
-<span class="sourceLineNo">108</span> if (mobEnabled) {<a name="line.108"></a>
-<span class="sourceLineNo">109</span> LOG.info("Taking snapshot for mob files in table " + htd.getTableName());<a name="line.109"></a>
-<span class="sourceLineNo">110</span> // snapshot the mob files as a offline region.<a name="line.110"></a>
-<span class="sourceLineNo">111</span> RegionInfo mobRegionInfo = MobUtils.getMobRegionInfo(htd.getTableName());<a name="line.111"></a>
-<span class="sourceLineNo">112</span> snapshotMobRegion(mobRegionInfo);<a name="line.112"></a>
-<span class="sourceLineNo">113</span> }<a name="line.113"></a>
-<span class="sourceLineNo">114</span> } catch (InterruptedException e) {<a name="line.114"></a>
-<span class="sourceLineNo">115</span> ForeignException ee =<a name="line.115"></a>
-<span class="sourceLineNo">116</span> new ForeignException("Interrupted while waiting for snapshot to finish", e);<a name="line.116"></a>
-<span class="sourceLineNo">117</span> monitor.receive(ee);<a name="line.117"></a>
-<span class="sourceLineNo">118</span> Thread.currentThread().interrupt();<a name="line.118"></a>
-<span class="sourceLineNo">119</span> } catch (ForeignException e) {<a name="line.119"></a>
-<span class="sourceLineNo">120</span> monitor.receive(e);<a name="line.120"></a>
-<span class="sourceLineNo">121</span> }<a name="line.121"></a>
-<span class="sourceLineNo">122</span> }<a name="line.122"></a>
-<span class="sourceLineNo">123</span><a name="line.123"></a>
-<span class="sourceLineNo">124</span> /**<a name="line.124"></a>
-<span class="sourceLineNo">125</span> * Takes a snapshot of the mob region<a name="line.125"></a>
-<span class="sourceLineNo">126</span> */<a name="line.126"></a>
-<span class="sourceLineNo">127</span> private void snapshotMobRegion(final RegionInfo regionInfo)<a name="line.127"></a>
-<span class="sourceLineNo">128</span> throws IOException {<a name="line.128"></a>
-<span class="sourceLineNo">129</span> snapshotManifest.addMobRegion(regionInfo);<a name="line.129"></a>
-<span class="sourceLineNo">130</span> monitor.rethrowException();<a name="line.130"></a>
-<span class="sourceLineNo">131</span> status.setStatus("Completed referencing HFiles for the mob region of table: " + snapshotTable);<a name="line.131"></a>
-<span class="sourceLineNo">132</span> }<a name="line.132"></a>
-<span class="sourceLineNo">133</span>}<a name="line.133"></a>
+<span class="sourceLineNo">027</span>import org.apache.hadoop.hbase.client.RegionReplicaUtil;<a name="line.27"></a>
+<span class="sourceLineNo">028</span>import org.apache.hadoop.hbase.errorhandling.ForeignException;<a name="line.28"></a>
+<span class="sourceLineNo">029</span>import org.apache.hadoop.hbase.master.MasterServices;<a name="line.29"></a>
+<span class="sourceLineNo">030</span>import org.apache.hadoop.hbase.mob.MobUtils;<a name="line.30"></a>
+<span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.procedure.Procedure;<a name="line.31"></a>
+<span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.procedure.ProcedureCoordinator;<a name="line.32"></a>
+<span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.snapshot.HBaseSnapshotException;<a name="line.33"></a>
+<span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.34"></a>
+<span class="sourceLineNo">035</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.35"></a>
+<span class="sourceLineNo">036</span>import org.slf4j.Logger;<a name="line.36"></a>
+<span class="sourceLineNo">037</span>import org.slf4j.LoggerFactory;<a name="line.37"></a>
+<span class="sourceLineNo">038</span>import org.apache.hbase.thirdparty.com.google.common.collect.Lists;<a name="line.38"></a>
+<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.SnapshotProtos.SnapshotDescription;<a name="line.39"></a>
+<span class="sourceLineNo">040</span><a name="line.40"></a>
+<span class="sourceLineNo">041</span>/**<a name="line.41"></a>
+<span class="sourceLineNo">042</span> * Handle the master side of taking a snapshot of an online table, regardless of snapshot type.<a name="line.42"></a>
+<span class="sourceLineNo">043</span> * Uses a {@link Procedure} to run the snapshot across all the involved region servers.<a name="line.43"></a>
+<span class="sourceLineNo">044</span> * @see ProcedureCoordinator<a name="line.44"></a>
+<span class="sourceLineNo">045</span> */<a name="line.45"></a>
+<span class="sourceLineNo">046</span>@InterfaceAudience.Private<a name="line.46"></a>
+<span class="sourceLineNo">047</span>public class EnabledTableSnapshotHandler extends TakeSnapshotHandler {<a name="line.47"></a>
+<span class="sourceLineNo">048</span><a name="line.48"></a>
+<span class="sourceLineNo">049</span> private static final Logger LOG = LoggerFactory.getLogger(EnabledTableSnapshotHandler.class);<a name="line.49"></a>
+<span class="sourceLineNo">050</span> private final ProcedureCoordinator coordinator;<a name="line.50"></a>
+<span class="sourceLineNo">051</span><a name="line.51"></a>
+<span class="sourceLineNo">052</span> public EnabledTableSnapshotHandler(SnapshotDescription snapshot, MasterServices master,<a name="line.52"></a>
+<span class="sourceLineNo">053</span> final SnapshotManager manager) {<a name="line.53"></a>
+<span class="sourceLineNo">054</span> super(snapshot, master, manager);<a name="line.54"></a>
+<span class="sourceLineNo">055</span> this.coordinator = manager.getCoordinator();<a name="line.55"></a>
+<span class="sourceLineNo">056</span> }<a name="line.56"></a>
+<span class="sourceLineNo">057</span><a name="line.57"></a>
+<span class="sourceLineNo">058</span> @Override<a name="line.58"></a>
+<span class="sourceLineNo">059</span> public EnabledTableSnapshotHandler prepare() throws Exception {<a name="line.59"></a>
+<span class="sourceLineNo">060</span> return (EnabledTableSnapshotHandler) super.prepare();<a name="line.60"></a>
+<span class="sourceLineNo">061</span> }<a name="line.61"></a>
+<span class="sourceLineNo">062</span><a name="line.62"></a>
+<span class="sourceLineNo">063</span> // TODO consider switching over to using regionnames, rather than server names. This would allow<a name="line.63"></a>
+<span class="sourceLineNo">064</span> // regions to migrate during a snapshot, and then be involved when they are ready. Still want to<a name="line.64"></a>
+<span class="sourceLineNo">065</span> // enforce a snapshot time constraints, but lets us be potentially a bit more robust.<a name="line.65"></a>
+<span class="sourceLineNo">066</span><a name="line.66"></a>
+<span class="sourceLineNo">067</span> /**<a name="line.67"></a>
+<span class="sourceLineNo">068</span> * This method kicks off a snapshot procedure. Other than that it hangs around for various<a name="line.68"></a>
+<span class="sourceLineNo">069</span> * phases to complete.<a name="line.69"></a>
+<span class="sourceLineNo">070</span> */<a name="line.70"></a>
+<span class="sourceLineNo">071</span> @Override<a name="line.71"></a>
+<span class="sourceLineNo">072</span> protected void snapshotRegions(List<Pair<RegionInfo, ServerName>> regions)<a name="line.72"></a>
+<span class="sourceLineNo">073</span> throws HBaseSnapshotException, IOException {<a name="line.73"></a>
+<span class="sourceLineNo">074</span> Set<String> regionServers = new HashSet<>(regions.size());<a name="line.74"></a>
+<span class="sourceLineNo">075</span> for (Pair<RegionInfo, ServerName> region : regions) {<a name="line.75"></a>
+<span class="sourceLineNo">076</span> if (region != null && region.getFirst() != null && region.getSecond() != null) {<a name="line.76"></a>
+<span class="sourceLineNo">077</span> RegionInfo hri = region.getFirst();<a name="line.77"></a>
+<span class="sourceLineNo">078</span> if (hri.isOffline() && (hri.isSplit() || hri.isSplitParent())) continue;<a name="line.78"></a>
+<span class="sourceLineNo">079</span> regionServers.add(region.getSecond().toString());<a name="line.79"></a>
+<span class="sourceLineNo">080</span> }<a name="line.80"></a>
+<span class="sourceLineNo">081</span> }<a name="line.81"></a>
+<span class="sourceLineNo">082</span><a name="line.82"></a>
+<span class="sourceLineNo">083</span> // start the snapshot on the RS<a name="line.83"></a>
+<span class="sourceLineNo">084</span> Procedure proc = coordinator.startProcedure(this.monitor, this.snapshot.getName(),<a name="line.84"></a>
+<span class="sourceLineNo">085</span> this.snapshot.toByteArray(), Lists.newArrayList(regionServers));<a name="line.85"></a>
+<span class="sourceLineNo">086</span> if (proc == null) {<a name="line.86"></a>
+<span class="sourceLineNo">087</span> String msg = "Failed to submit distributed procedure for snapshot '"<a name="line.87"></a>
+<span class="sourceLineNo">088</span> + snapshot.getName() + "'";<a name="line.88"></a>
+<span class="sourceLineNo">089</span> LOG.error(msg);<a name="line.89"></a>
+<span class="sourceLineNo">090</span> throw new HBaseSnapshotException(msg);<a name="line.90"></a>
+<span class="sourceLineNo">091</span> }<a name="line.91"></a>
+<span class="sourceLineNo">092</span><a name="line.92"></a>
+<span class="sourceLineNo">093</span> try {<a name="line.93"></a>
+<span class="sourceLineNo">094</span> // wait for the snapshot to complete. A timer thread is kicked off that should cancel this<a name="line.94"></a>
+<span class="sourceLineNo">095</span> // if it takes too long.<a name="line.95"></a>
+<span class="sourceLineNo">096</span> proc.waitForCompleted();<a name="line.96"></a>
+<span class="sourceLineNo">097</span> LOG.info("Done waiting - online snapshot for " + this.snapshot.getName());<a name="line.97"></a>
+<span class="sourceLineNo">098</span><a name="line.98"></a>
+<span class="sourceLineNo">099</span> // Take the offline regions as disabled<a name="line.99"></a>
+<span class="sourceLineNo">100</span> for (Pair<RegionInfo, ServerName> region : regions) {<a name="line.100"></a>
+<span class="sourceLineNo">101</span> RegionInfo regionInfo = region.getFirst();<a name="line.101"></a>
+<span class="sourceLineNo">102</span> if (regionInfo.isOffline() && (regionInfo.isSplit() || regionInfo.isSplitParent()) &&<a name="line.102"></a>
+<span class="sourceLineNo">103</span> RegionReplicaUtil.isDefaultReplica(regionInfo)) {<a name="line.103"></a>
+<span class="sourceLineNo">104</span> LOG.info("Take disabled snapshot of offline region=" + regionInfo);<a name="line.104"></a>
+<span class="sourceLineNo">105</span> snapshotDisabledRegion(regionInfo);<a name="line.105"></a>
+<span class="sourceLineNo">106</span> }<a name="line.106"></a>
+<span class="sourceLineNo">107</span> }<a name="line.107"></a>
+<span class="sourceLineNo">108</span> // handle the mob files if any.<a name="line.108"></a>
+<span class="sourceLineNo">109</span> boolean mobEnabled = MobUtils.hasMobColumns(htd);<a name="line.109"></a>
+<span class="sourceLineNo">110</span> if (mobEnabled) {<a name="line.110"></a>
+<span class="sourceLineNo">111</span> LOG.info("Taking snapshot for mob files in table " + htd.getTableName());<a name="line.111"></a>
+<span class="sourceLineNo">112</span> // snapshot the mob files as a offline region.<a name="line.112"></a>
+<span class="sourceLineNo">113</span> RegionInfo mobRegionInfo = MobUtils.getMobRegionInfo(htd.getTableName());<a name="line.113"></a>
+<span class="sourceLineNo">114</span> snapshotMobRegion(mobRegionInfo);<a name="line.114"></a>
+<span class="sourceLineNo">115</span> }<a name="line.115"></a>
+<span class="sourceLineNo">116</span> } catch (InterruptedException e) {<a name="line.116"></a>
+<span class="sourceLineNo">117</span> ForeignException ee =<a name="line.117"></a>
+<span class="sourceLineNo">118</span> new ForeignException("Interrupted while waiting for snapshot to finish", e);<a name="line.118"></a>
+<span class="sourceLineNo">119</span> monitor.receive(ee);<a name="line.119"></a>
+<span class="sourceLineNo">120</span> Thread.currentThread().interrupt();<a name="line.120"></a>
+<span class="sourceLineNo">121</span> } catch (ForeignException e) {<a name="line.121"></a>
+<span class="sourceLineNo">122</span> monitor.receive(e);<a name="line.122"></a>
+<span class="sourceLineNo">123</span> }<a name="line.123"></a>
+<span class="sourceLineNo">124</span> }<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> * Takes a snapshot of the mob region<a name="line.127"></a>
+<span class="sourceLineNo">128</span> */<a name="line.128"></a>
+<span class="sourceLineNo">129</span> private void snapshotMobRegion(final RegionInfo regionInfo)<a name="line.129"></a>
+<span class="sourceLineNo">130</span> throws IOException {<a name="line.130"></a>
+<span class="sourceLineNo">131</span> snapshotManifest.addMobRegion(regionInfo);<a name="line.131"></a>
+<span class="sourceLineNo">132</span> monitor.rethrowException();<a name="line.132"></a>
+<span class="sourceLineNo">133</span> status.setStatus("Completed referencing HFiles for the mob region of table: " + snapshotTable);<a name="line.133"></a>
+<span class="sourceLineNo">134</span> }<a name="line.134"></a>
+<span class="sourceLineNo">135</span>}<a name="line.135"></a>