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From git-site-r...@apache.org
Subject [02/51] [partial] hbase-site git commit: Published site at .
Date Fri, 03 Nov 2017 15:17:02 GMT
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/7d38bdbb/devapidocs/src-html/org/apache/hadoop/hbase/io/asyncfs/AsyncFSOutputHelper.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/io/asyncfs/AsyncFSOutputHelper.html
b/devapidocs/src-html/org/apache/hadoop/hbase/io/asyncfs/AsyncFSOutputHelper.html
index 676c748..c6e457f 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/io/asyncfs/AsyncFSOutputHelper.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/io/asyncfs/AsyncFSOutputHelper.html
@@ -46,136 +46,145 @@
 <span class="sourceLineNo">038</span>import org.apache.yetus.audience.InterfaceAudience;<a
name="line.38"></a>
 <span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.io.ByteArrayOutputStream;<a
name="line.39"></a>
 <span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.util.CancelableProgressable;<a
name="line.40"></a>
-<span class="sourceLineNo">041</span>import org.apache.hadoop.hdfs.DistributedFileSystem;<a
name="line.41"></a>
-<span class="sourceLineNo">042</span>import org.apache.hadoop.hdfs.protocol.DatanodeInfo;<a
name="line.42"></a>
-<span class="sourceLineNo">043</span><a name="line.43"></a>
-<span class="sourceLineNo">044</span>/**<a name="line.44"></a>
-<span class="sourceLineNo">045</span> * Helper class for creating AsyncFSOutput.<a
name="line.45"></a>
-<span class="sourceLineNo">046</span> */<a name="line.46"></a>
-<span class="sourceLineNo">047</span>@InterfaceAudience.Private<a name="line.47"></a>
-<span class="sourceLineNo">048</span>public final class AsyncFSOutputHelper {<a
name="line.48"></a>
-<span class="sourceLineNo">049</span><a name="line.49"></a>
-<span class="sourceLineNo">050</span>  private AsyncFSOutputHelper() {<a name="line.50"></a>
-<span class="sourceLineNo">051</span>  }<a name="line.51"></a>
-<span class="sourceLineNo">052</span><a name="line.52"></a>
-<span class="sourceLineNo">053</span>  /**<a name="line.53"></a>
-<span class="sourceLineNo">054</span>   * Create {@link FanOutOneBlockAsyncDFSOutput}
for {@link DistributedFileSystem}, and a simple<a name="line.54"></a>
-<span class="sourceLineNo">055</span>   * implementation for other {@link FileSystem}
which wraps around a {@link FSDataOutputStream}.<a name="line.55"></a>
-<span class="sourceLineNo">056</span>   */<a name="line.56"></a>
-<span class="sourceLineNo">057</span>  public static AsyncFSOutput createOutput(FileSystem
fs, Path f, boolean overwrite,<a name="line.57"></a>
-<span class="sourceLineNo">058</span>      boolean createParent, short replication,
long blockSize, EventLoop eventLoop,<a name="line.58"></a>
-<span class="sourceLineNo">059</span>      Class&lt;? extends Channel&gt;
channelClass) throws IOException {<a name="line.59"></a>
-<span class="sourceLineNo">060</span>    if (fs instanceof DistributedFileSystem)
{<a name="line.60"></a>
-<span class="sourceLineNo">061</span>      return FanOutOneBlockAsyncDFSOutputHelper.createOutput((DistributedFileSystem)
fs, f,<a name="line.61"></a>
-<span class="sourceLineNo">062</span>        overwrite, createParent, replication,
blockSize, eventLoop, channelClass);<a name="line.62"></a>
-<span class="sourceLineNo">063</span>    }<a name="line.63"></a>
-<span class="sourceLineNo">064</span>    final FSDataOutputStream fsOut;<a
name="line.64"></a>
-<span class="sourceLineNo">065</span>    int bufferSize = fs.getConf().getInt(CommonConfigurationKeysPublic.IO_FILE_BUFFER_SIZE_KEY,<a
name="line.65"></a>
-<span class="sourceLineNo">066</span>      CommonConfigurationKeysPublic.IO_FILE_BUFFER_SIZE_DEFAULT);<a
name="line.66"></a>
-<span class="sourceLineNo">067</span>    if (createParent) {<a name="line.67"></a>
-<span class="sourceLineNo">068</span>      fsOut = fs.create(f, overwrite, bufferSize,
replication, blockSize, null);<a name="line.68"></a>
-<span class="sourceLineNo">069</span>    } else {<a name="line.69"></a>
-<span class="sourceLineNo">070</span>      fsOut = fs.createNonRecursive(f, overwrite,
bufferSize, replication, blockSize, null);<a name="line.70"></a>
-<span class="sourceLineNo">071</span>    }<a name="line.71"></a>
-<span class="sourceLineNo">072</span>    final ExecutorService flushExecutor
=<a name="line.72"></a>
-<span class="sourceLineNo">073</span>        Executors.newSingleThreadExecutor(new
ThreadFactoryBuilder().setDaemon(true)<a name="line.73"></a>
-<span class="sourceLineNo">074</span>            .setNameFormat("AsyncFSOutputFlusher-"
+ f.toString().replace("%", "%%")).build());<a name="line.74"></a>
-<span class="sourceLineNo">075</span>    return new AsyncFSOutput() {<a name="line.75"></a>
-<span class="sourceLineNo">076</span><a name="line.76"></a>
-<span class="sourceLineNo">077</span>      private final ByteArrayOutputStream
out = new ByteArrayOutputStream();<a name="line.77"></a>
-<span class="sourceLineNo">078</span><a name="line.78"></a>
-<span class="sourceLineNo">079</span>      @Override<a name="line.79"></a>
-<span class="sourceLineNo">080</span>      public void write(final byte[] b,
final int off, final int len) {<a name="line.80"></a>
-<span class="sourceLineNo">081</span>        if (eventLoop.inEventLoop()) {<a
name="line.81"></a>
-<span class="sourceLineNo">082</span>          out.write(b, off, len);<a name="line.82"></a>
-<span class="sourceLineNo">083</span>        } else {<a name="line.83"></a>
-<span class="sourceLineNo">084</span>          eventLoop.submit(() -&gt;
out.write(b, off, len)).syncUninterruptibly();<a name="line.84"></a>
-<span class="sourceLineNo">085</span>        }<a name="line.85"></a>
-<span class="sourceLineNo">086</span>      }<a name="line.86"></a>
+<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.util.CommonFSUtils;<a
name="line.41"></a>
+<span class="sourceLineNo">042</span>import org.apache.hadoop.hdfs.DistributedFileSystem;<a
name="line.42"></a>
+<span class="sourceLineNo">043</span>import org.apache.hadoop.hdfs.protocol.DatanodeInfo;<a
name="line.43"></a>
+<span class="sourceLineNo">044</span><a name="line.44"></a>
+<span class="sourceLineNo">045</span>/**<a name="line.45"></a>
+<span class="sourceLineNo">046</span> * Helper class for creating AsyncFSOutput.<a
name="line.46"></a>
+<span class="sourceLineNo">047</span> */<a name="line.47"></a>
+<span class="sourceLineNo">048</span>@InterfaceAudience.Private<a name="line.48"></a>
+<span class="sourceLineNo">049</span>public final class AsyncFSOutputHelper {<a
name="line.49"></a>
+<span class="sourceLineNo">050</span><a name="line.50"></a>
+<span class="sourceLineNo">051</span>  private AsyncFSOutputHelper() {<a name="line.51"></a>
+<span class="sourceLineNo">052</span>  }<a name="line.52"></a>
+<span class="sourceLineNo">053</span><a name="line.53"></a>
+<span class="sourceLineNo">054</span>  /**<a name="line.54"></a>
+<span class="sourceLineNo">055</span>   * Create {@link FanOutOneBlockAsyncDFSOutput}
for {@link DistributedFileSystem}, and a simple<a name="line.55"></a>
+<span class="sourceLineNo">056</span>   * implementation for other {@link FileSystem}
which wraps around a {@link FSDataOutputStream}.<a name="line.56"></a>
+<span class="sourceLineNo">057</span>   */<a name="line.57"></a>
+<span class="sourceLineNo">058</span>  public static AsyncFSOutput createOutput(FileSystem
fs, Path f, boolean overwrite,<a name="line.58"></a>
+<span class="sourceLineNo">059</span>      boolean createParent, short replication,
long blockSize, EventLoop eventLoop,<a name="line.59"></a>
+<span class="sourceLineNo">060</span>      Class&lt;? extends Channel&gt;
channelClass)<a name="line.60"></a>
+<span class="sourceLineNo">061</span>          throws IOException, CommonFSUtils.StreamLacksCapabilityException
{<a name="line.61"></a>
+<span class="sourceLineNo">062</span>    if (fs instanceof DistributedFileSystem)
{<a name="line.62"></a>
+<span class="sourceLineNo">063</span>      return FanOutOneBlockAsyncDFSOutputHelper.createOutput((DistributedFileSystem)
fs, f,<a name="line.63"></a>
+<span class="sourceLineNo">064</span>        overwrite, createParent, replication,
blockSize, eventLoop, channelClass);<a name="line.64"></a>
+<span class="sourceLineNo">065</span>    }<a name="line.65"></a>
+<span class="sourceLineNo">066</span>    final FSDataOutputStream fsOut;<a
name="line.66"></a>
+<span class="sourceLineNo">067</span>    int bufferSize = fs.getConf().getInt(CommonConfigurationKeysPublic.IO_FILE_BUFFER_SIZE_KEY,<a
name="line.67"></a>
+<span class="sourceLineNo">068</span>      CommonConfigurationKeysPublic.IO_FILE_BUFFER_SIZE_DEFAULT);<a
name="line.68"></a>
+<span class="sourceLineNo">069</span>    if (createParent) {<a name="line.69"></a>
+<span class="sourceLineNo">070</span>      fsOut = fs.create(f, overwrite, bufferSize,
replication, blockSize, null);<a name="line.70"></a>
+<span class="sourceLineNo">071</span>    } else {<a name="line.71"></a>
+<span class="sourceLineNo">072</span>      fsOut = fs.createNonRecursive(f, overwrite,
bufferSize, replication, blockSize, null);<a name="line.72"></a>
+<span class="sourceLineNo">073</span>    }<a name="line.73"></a>
+<span class="sourceLineNo">074</span>    // After we create the stream but before
we attempt to use it at all<a name="line.74"></a>
+<span class="sourceLineNo">075</span>    // ensure that we can provide the level
of data safety we're configured<a name="line.75"></a>
+<span class="sourceLineNo">076</span>    // to provide.<a name="line.76"></a>
+<span class="sourceLineNo">077</span>    if (!(CommonFSUtils.hasCapability(fsOut,
"hflush") &amp;&amp;<a name="line.77"></a>
+<span class="sourceLineNo">078</span>        CommonFSUtils.hasCapability(fsOut,
"hsync"))) {<a name="line.78"></a>
+<span class="sourceLineNo">079</span>      throw new CommonFSUtils.StreamLacksCapabilityException("hflush
and hsync");<a name="line.79"></a>
+<span class="sourceLineNo">080</span>    }<a name="line.80"></a>
+<span class="sourceLineNo">081</span>    final ExecutorService flushExecutor
=<a name="line.81"></a>
+<span class="sourceLineNo">082</span>        Executors.newSingleThreadExecutor(new
ThreadFactoryBuilder().setDaemon(true)<a name="line.82"></a>
+<span class="sourceLineNo">083</span>            .setNameFormat("AsyncFSOutputFlusher-"
+ f.toString().replace("%", "%%")).build());<a name="line.83"></a>
+<span class="sourceLineNo">084</span>    return new AsyncFSOutput() {<a name="line.84"></a>
+<span class="sourceLineNo">085</span><a name="line.85"></a>
+<span class="sourceLineNo">086</span>      private final ByteArrayOutputStream
out = new ByteArrayOutputStream();<a name="line.86"></a>
 <span class="sourceLineNo">087</span><a name="line.87"></a>
 <span class="sourceLineNo">088</span>      @Override<a name="line.88"></a>
-<span class="sourceLineNo">089</span>      public void write(byte[] b) {<a
name="line.89"></a>
-<span class="sourceLineNo">090</span>        write(b, 0, b.length);<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>      @Override<a name="line.93"></a>
-<span class="sourceLineNo">094</span>      public void recoverAndClose(CancelableProgressable
reporter) throws IOException {<a name="line.94"></a>
-<span class="sourceLineNo">095</span>        fsOut.close();<a name="line.95"></a>
-<span class="sourceLineNo">096</span>      }<a name="line.96"></a>
-<span class="sourceLineNo">097</span><a name="line.97"></a>
-<span class="sourceLineNo">098</span>      @Override<a name="line.98"></a>
-<span class="sourceLineNo">099</span>      public DatanodeInfo[] getPipeline()
{<a name="line.99"></a>
-<span class="sourceLineNo">100</span>        return new DatanodeInfo[0];<a
name="line.100"></a>
-<span class="sourceLineNo">101</span>      }<a name="line.101"></a>
-<span class="sourceLineNo">102</span><a name="line.102"></a>
-<span class="sourceLineNo">103</span>      private void flush0(CompletableFuture&lt;Long&gt;
future, boolean sync) {<a name="line.103"></a>
-<span class="sourceLineNo">104</span>        try {<a name="line.104"></a>
-<span class="sourceLineNo">105</span>          synchronized (out) {<a name="line.105"></a>
-<span class="sourceLineNo">106</span>            fsOut.write(out.getBuffer(),
0, out.size());<a name="line.106"></a>
-<span class="sourceLineNo">107</span>            out.reset();<a name="line.107"></a>
-<span class="sourceLineNo">108</span>          }<a name="line.108"></a>
-<span class="sourceLineNo">109</span>        } catch (IOException e) {<a name="line.109"></a>
-<span class="sourceLineNo">110</span>          eventLoop.execute(() -&gt;
future.completeExceptionally(e));<a name="line.110"></a>
-<span class="sourceLineNo">111</span>          return;<a name="line.111"></a>
-<span class="sourceLineNo">112</span>        }<a name="line.112"></a>
+<span class="sourceLineNo">089</span>      public void write(final byte[] b,
final int off, final int len) {<a name="line.89"></a>
+<span class="sourceLineNo">090</span>        if (eventLoop.inEventLoop()) {<a
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+<span class="sourceLineNo">092</span>        } else {<a name="line.92"></a>
+<span class="sourceLineNo">093</span>          eventLoop.submit(() -&gt;
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+<span class="sourceLineNo">097</span>      @Override<a name="line.97"></a>
+<span class="sourceLineNo">098</span>      public void write(byte[] b) {<a
name="line.98"></a>
+<span class="sourceLineNo">099</span>        write(b, 0, b.length);<a name="line.99"></a>
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+<span class="sourceLineNo">102</span>      @Override<a name="line.102"></a>
+<span class="sourceLineNo">103</span>      public void recoverAndClose(CancelableProgressable
reporter) throws IOException {<a name="line.103"></a>
+<span class="sourceLineNo">104</span>        fsOut.close();<a name="line.104"></a>
+<span class="sourceLineNo">105</span>      }<a name="line.105"></a>
+<span class="sourceLineNo">106</span><a name="line.106"></a>
+<span class="sourceLineNo">107</span>      @Override<a name="line.107"></a>
+<span class="sourceLineNo">108</span>      public DatanodeInfo[] getPipeline()
{<a name="line.108"></a>
+<span class="sourceLineNo">109</span>        return new DatanodeInfo[0];<a
name="line.109"></a>
+<span class="sourceLineNo">110</span>      }<a name="line.110"></a>
+<span class="sourceLineNo">111</span><a name="line.111"></a>
+<span class="sourceLineNo">112</span>      private void flush0(CompletableFuture&lt;Long&gt;
future, boolean sync) {<a name="line.112"></a>
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