http://git-wip-us.apache.org/repos/asf/hbase-site/blob/ca5b0275/devapidocs/src-html/org/apache/hadoop/hbase/io/asyncfs/FanOutOneBlockAsyncDFSOutput.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/io/asyncfs/FanOutOneBlockAsyncDFSOutput.html b/devapidocs/src-html/org/apache/hadoop/hbase/io/asyncfs/FanOutOneBlockAsyncDFSOutput.html index 0c07a2f..c90d203 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/io/asyncfs/FanOutOneBlockAsyncDFSOutput.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/io/asyncfs/FanOutOneBlockAsyncDFSOutput.html @@ -34,553 +34,554 @@ <span class="sourceLineNo">026</span>import static org.apache.hadoop.hbase.io.asyncfs.FanOutOneBlockAsyncDFSOutputHelper.getStatus;<a name="line.26"></a> <span class="sourceLineNo">027</span>import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_CLIENT_SOCKET_TIMEOUT_KEY;<a name="line.27"></a> <span class="sourceLineNo">028</span><a name="line.28"></a> -<span class="sourceLineNo">029</span>import com.google.common.annotations.VisibleForTesting;<a name="line.29"></a> -<span class="sourceLineNo">030</span><a name="line.30"></a> -<span class="sourceLineNo">031</span>import io.netty.buffer.ByteBuf;<a name="line.31"></a> -<span class="sourceLineNo">032</span>import io.netty.buffer.ByteBufAllocator;<a name="line.32"></a> -<span class="sourceLineNo">033</span>import io.netty.channel.Channel;<a name="line.33"></a> -<span class="sourceLineNo">034</span>import io.netty.channel.ChannelHandler.Sharable;<a name="line.34"></a> -<span class="sourceLineNo">035</span>import io.netty.channel.ChannelHandlerContext;<a name="line.35"></a> -<span class="sourceLineNo">036</span>import io.netty.channel.EventLoop;<a name="line.36"></a> -<span class="sourceLineNo">037</span>import io.netty.channel.SimpleChannelInboundHandler;<a name="line.37"></a> -<span class="sourceLineNo">038</span>import io.netty.handler.codec.protobuf.ProtobufDecoder;<a name="line.38"></a> -<span class="sourceLineNo">039</span>import io.netty.handler.codec.protobuf.ProtobufVarint32FrameDecoder;<a name="line.39"></a> -<span class="sourceLineNo">040</span>import io.netty.handler.timeout.IdleStateEvent;<a name="line.40"></a> -<span class="sourceLineNo">041</span>import io.netty.handler.timeout.IdleStateHandler;<a name="line.41"></a> -<span class="sourceLineNo">042</span>import io.netty.util.concurrent.Future;<a name="line.42"></a> -<span class="sourceLineNo">043</span>import io.netty.util.concurrent.Promise;<a name="line.43"></a> -<span class="sourceLineNo">044</span>import io.netty.util.concurrent.PromiseCombiner;<a name="line.44"></a> -<span class="sourceLineNo">045</span><a name="line.45"></a> -<span class="sourceLineNo">046</span>import java.io.IOException;<a name="line.46"></a> -<span class="sourceLineNo">047</span>import java.nio.ByteBuffer;<a name="line.47"></a> -<span class="sourceLineNo">048</span>import java.util.ArrayDeque;<a name="line.48"></a> -<span class="sourceLineNo">049</span>import java.util.Collection;<a name="line.49"></a> -<span class="sourceLineNo">050</span>import java.util.Collections;<a name="line.50"></a> -<span class="sourceLineNo">051</span>import java.util.Deque;<a name="line.51"></a> -<span class="sourceLineNo">052</span>import java.util.IdentityHashMap;<a name="line.52"></a> -<span class="sourceLineNo">053</span>import java.util.List;<a name="line.53"></a> -<span class="sourceLineNo">054</span>import java.util.Set;<a name="line.54"></a> -<span class="sourceLineNo">055</span>import java.util.concurrent.CompletableFuture;<a name="line.55"></a> -<span class="sourceLineNo">056</span>import java.util.concurrent.TimeUnit;<a name="line.56"></a> -<span class="sourceLineNo">057</span>import java.util.function.Supplier;<a name="line.57"></a> -<span class="sourceLineNo">058</span><a name="line.58"></a> -<span class="sourceLineNo">059</span>import org.apache.hadoop.conf.Configuration;<a name="line.59"></a> -<span class="sourceLineNo">060</span>import org.apache.hadoop.crypto.Encryptor;<a name="line.60"></a> -<span class="sourceLineNo">061</span>import org.apache.hadoop.fs.Path;<a name="line.61"></a> -<span class="sourceLineNo">062</span>import org.apache.hadoop.hbase.classification.InterfaceAudience;<a name="line.62"></a> -<span class="sourceLineNo">063</span>import org.apache.hadoop.hbase.io.asyncfs.FanOutOneBlockAsyncDFSOutputHelper.CancelOnClose;<a name="line.63"></a> -<span class="sourceLineNo">064</span>import org.apache.hadoop.hbase.util.CancelableProgressable;<a name="line.64"></a> -<span class="sourceLineNo">065</span>import org.apache.hadoop.hbase.util.FSUtils;<a name="line.65"></a> -<span class="sourceLineNo">066</span>import org.apache.hadoop.hdfs.DFSClient;<a name="line.66"></a> -<span class="sourceLineNo">067</span>import org.apache.hadoop.hdfs.DistributedFileSystem;<a name="line.67"></a> -<span class="sourceLineNo">068</span>import org.apache.hadoop.hdfs.protocol.ClientProtocol;<a name="line.68"></a> -<span class="sourceLineNo">069</span>import org.apache.hadoop.hdfs.protocol.DatanodeInfo;<a name="line.69"></a> -<span class="sourceLineNo">070</span>import org.apache.hadoop.hdfs.protocol.LocatedBlock;<a name="line.70"></a> -<span class="sourceLineNo">071</span>import org.apache.hadoop.hdfs.protocol.datatransfer.PacketHeader;<a name="line.71"></a> -<span class="sourceLineNo">072</span>import org.apache.hadoop.hdfs.protocol.datatransfer.PipelineAck;<a name="line.72"></a> -<span class="sourceLineNo">073</span>import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.PipelineAckProto;<a name="line.73"></a> -<span class="sourceLineNo">074</span>import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.Status;<a name="line.74"></a> -<span class="sourceLineNo">075</span>import org.apache.hadoop.util.DataChecksum;<a name="line.75"></a> -<span class="sourceLineNo">076</span><a name="line.76"></a> -<span class="sourceLineNo">077</span>/**<a name="line.77"></a> -<span class="sourceLineNo">078</span> * An asynchronous HDFS output stream implementation which fans out data to datanode and only<a name="line.78"></a> -<span class="sourceLineNo">079</span> * supports writing file with only one block.<a name="line.79"></a> -<span class="sourceLineNo">080</span> * <p><a name="line.80"></a> -<span class="sourceLineNo">081</span> * Use the createOutput method in {@link FanOutOneBlockAsyncDFSOutputHelper} to create. The mainly<a name="line.81"></a> -<span class="sourceLineNo">082</span> * usage of this class is implementing WAL, so we only expose a little HDFS configurations in the<a name="line.82"></a> -<span class="sourceLineNo">083</span> * method. And we place it here under util package because we want to make it independent of WAL<a name="line.83"></a> -<span class="sourceLineNo">084</span> * implementation thus easier to move it to HDFS project finally.<a name="line.84"></a> -<span class="sourceLineNo">085</span> * <p><a name="line.85"></a> -<span class="sourceLineNo">086</span> * Note that, all connections to datanode will run in the same {@link EventLoop} which means we only<a name="line.86"></a> -<span class="sourceLineNo">087</span> * need one thread here. But be careful, we do some blocking operations in {@link #close()} and<a name="line.87"></a> -<span class="sourceLineNo">088</span> * {@link #recoverAndClose(CancelableProgressable)} methods, so do not call them inside<a name="line.88"></a> -<span class="sourceLineNo">089</span> * {@link EventLoop}. And for {@link #write(byte[])} {@link #write(byte[], int, int)},<a name="line.89"></a> -<span class="sourceLineNo">090</span> * {@link #buffered()} and {@link #flush(boolean)}, if you call them outside {@link EventLoop},<a name="line.90"></a> -<span class="sourceLineNo">091</span> * there will be an extra context-switch.<a name="line.91"></a> -<span class="sourceLineNo">092</span> * <p><a name="line.92"></a> -<span class="sourceLineNo">093</span> * Advantages compare to DFSOutputStream:<a name="line.93"></a> -<span class="sourceLineNo">094</span> * <ol><a name="line.94"></a> -<span class="sourceLineNo">095</span> * <li>The fan out mechanism. This will reduce the latency.</li><a name="line.95"></a> -<span class="sourceLineNo">096</span> * <li>The asynchronous WAL could also run in the same EventLoop, we could just call write and flush<a name="line.96"></a> -<span class="sourceLineNo">097</span> * inside the EventLoop thread, so generally we only have one thread to do all the things.</li><a name="line.97"></a> -<span class="sourceLineNo">098</span> * <li>Fail-fast when connection to datanode error. The WAL implementation could open new writer<a name="line.98"></a> -<span class="sourceLineNo">099</span> * ASAP.</li><a name="line.99"></a> -<span class="sourceLineNo">100</span> * <li>We could benefit from netty's ByteBuf management mechanism.</li><a name="line.100"></a> -<span class="sourceLineNo">101</span> * </ol><a name="line.101"></a> -<span class="sourceLineNo">102</span> */<a name="line.102"></a> -<span class="sourceLineNo">103</span>@InterfaceAudience.Private<a name="line.103"></a> -<span class="sourceLineNo">104</span>public class FanOutOneBlockAsyncDFSOutput implements AsyncFSOutput {<a name="line.104"></a> -<span class="sourceLineNo">105</span><a name="line.105"></a> -<span class="sourceLineNo">106</span> // The MAX_PACKET_SIZE is 16MB but it include the header size and checksum size. So here we set a<a name="line.106"></a> -<span class="sourceLineNo">107</span> // smaller limit for data size.<a name="line.107"></a> -<span class="sourceLineNo">108</span> private static final int MAX_DATA_LEN = 12 * 1024 * 1024;<a name="line.108"></a> -<span class="sourceLineNo">109</span><a name="line.109"></a> -<span class="sourceLineNo">110</span> private final Configuration conf;<a name="line.110"></a> -<span class="sourceLineNo">111</span><a name="line.111"></a> -<span class="sourceLineNo">112</span> private final FSUtils fsUtils;<a name="line.112"></a> -<span class="sourceLineNo">113</span><a name="line.113"></a> -<span class="sourceLineNo">114</span> private final DistributedFileSystem dfs;<a name="line.114"></a> -<span class="sourceLineNo">115</span><a name="line.115"></a> -<span class="sourceLineNo">116</span> private final DFSClient client;<a name="line.116"></a> -<span class="sourceLineNo">117</span><a name="line.117"></a> -<span class="sourceLineNo">118</span> private final ClientProtocol namenode;<a name="line.118"></a> -<span class="sourceLineNo">119</span><a name="line.119"></a> -<span class="sourceLineNo">120</span> private final String clientName;<a name="line.120"></a> -<span class="sourceLineNo">121</span><a name="line.121"></a> -<span class="sourceLineNo">122</span> private final String src;<a name="line.122"></a> -<span class="sourceLineNo">123</span><a name="line.123"></a> -<span class="sourceLineNo">124</span> private final long fileId;<a name="line.124"></a> -<span class="sourceLineNo">125</span><a name="line.125"></a> -<span class="sourceLineNo">126</span> private final LocatedBlock locatedBlock;<a name="line.126"></a> -<span class="sourceLineNo">127</span><a name="line.127"></a> -<span class="sourceLineNo">128</span> private final Encryptor encryptor;<a name="line.128"></a> -<span class="sourceLineNo">129</span><a name="line.129"></a> -<span class="sourceLineNo">130</span> private final EventLoop eventLoop;<a name="line.130"></a> -<span class="sourceLineNo">131</span><a name="line.131"></a> -<span class="sourceLineNo">132</span> private final List<Channel> datanodeList;<a name="line.132"></a> -<span class="sourceLineNo">133</span><a name="line.133"></a> -<span class="sourceLineNo">134</span> private final DataChecksum summer;<a name="line.134"></a> -<span class="sourceLineNo">135</span><a name="line.135"></a> -<span class="sourceLineNo">136</span> private final int maxDataLen;<a name="line.136"></a> -<span class="sourceLineNo">137</span><a name="line.137"></a> -<span class="sourceLineNo">138</span> private final ByteBufAllocator alloc;<a name="line.138"></a> -<span class="sourceLineNo">139</span><a name="line.139"></a> -<span class="sourceLineNo">140</span> private static final class Callback {<a name="line.140"></a> -<span class="sourceLineNo">141</span><a name="line.141"></a> -<span class="sourceLineNo">142</span> private final Promise<Void> promise;<a name="line.142"></a> -<span class="sourceLineNo">143</span><a name="line.143"></a> -<span class="sourceLineNo">144</span> private final long ackedLength;<a name="line.144"></a> -<span class="sourceLineNo">145</span><a name="line.145"></a> -<span class="sourceLineNo">146</span> private final Set<Channel> unfinishedReplicas;<a name="line.146"></a> -<span class="sourceLineNo">147</span><a name="line.147"></a> -<span class="sourceLineNo">148</span> public Callback(Promise<Void> promise, long ackedLength, Collection<Channel> replicas) {<a name="line.148"></a> -<span class="sourceLineNo">149</span> this.promise = promise;<a name="line.149"></a> -<span class="sourceLineNo">150</span> this.ackedLength = ackedLength;<a name="line.150"></a> -<span class="sourceLineNo">151</span> if (replicas.isEmpty()) {<a name="line.151"></a> -<span class="sourceLineNo">152</span> this.unfinishedReplicas = Collections.emptySet();<a name="line.152"></a> -<span class="sourceLineNo">153</span> } else {<a name="line.153"></a> -<span class="sourceLineNo">154</span> this.unfinishedReplicas =<a name="line.154"></a> -<span class="sourceLineNo">155</span> Collections.newSetFromMap(new IdentityHashMap<Channel, Boolean>(replicas.size()));<a name="line.155"></a> -<span class="sourceLineNo">156</span> this.unfinishedReplicas.addAll(replicas);<a name="line.156"></a> -<span class="sourceLineNo">157</span> }<a name="line.157"></a> -<span class="sourceLineNo">158</span> }<a name="line.158"></a> -<span class="sourceLineNo">159</span> }<a name="line.159"></a> -<span class="sourceLineNo">160</span><a name="line.160"></a> -<span class="sourceLineNo">161</span> private final Deque<Callback> waitingAckQueue = new ArrayDeque<>();<a name="line.161"></a> -<span class="sourceLineNo">162</span><a name="line.162"></a> -<span class="sourceLineNo">163</span> // this could be different from acked block length because a packet can not start at the middle of<a name="line.163"></a> -<span class="sourceLineNo">164</span> // a chunk.<a name="line.164"></a> -<span class="sourceLineNo">165</span> private long nextPacketOffsetInBlock = 0L;<a name="line.165"></a> -<span class="sourceLineNo">166</span><a name="line.166"></a> -<span class="sourceLineNo">167</span> private long nextPacketSeqno = 0L;<a name="line.167"></a> -<span class="sourceLineNo">168</span><a name="line.168"></a> -<span class="sourceLineNo">169</span> private ByteBuf buf;<a name="line.169"></a> -<span class="sourceLineNo">170</span> // buf's initial capacity - 4KB<a name="line.170"></a> -<span class="sourceLineNo">171</span> private int capacity = 4 * 1024;<a name="line.171"></a> -<span class="sourceLineNo">172</span><a name="line.172"></a> -<span class="sourceLineNo">173</span> // LIMIT is 128MB<a name="line.173"></a> -<span class="sourceLineNo">174</span> private static final int LIMIT = 128 * 1024 * 1024;<a name="line.174"></a> -<span class="sourceLineNo">175</span><a name="line.175"></a> -<span class="sourceLineNo">176</span> private enum State {<a name="line.176"></a> -<span class="sourceLineNo">177</span> STREAMING, CLOSING, BROKEN, CLOSED<a name="line.177"></a> -<span class="sourceLineNo">178</span> }<a name="line.178"></a> -<span class="sourceLineNo">179</span><a name="line.179"></a> -<span class="sourceLineNo">180</span> private State state;<a name="line.180"></a> -<span class="sourceLineNo">181</span><a name="line.181"></a> -<span class="sourceLineNo">182</span> private void completed(Channel channel) {<a name="line.182"></a> -<span class="sourceLineNo">183</span> if (waitingAckQueue.isEmpty()) {<a name="line.183"></a> -<span class="sourceLineNo">184</span> return;<a name="line.184"></a> -<span class="sourceLineNo">185</span> }<a name="line.185"></a> -<span class="sourceLineNo">186</span> for (Callback c : waitingAckQueue) {<a name="line.186"></a> -<span class="sourceLineNo">187</span> if (c.unfinishedReplicas.remove(channel)) {<a name="line.187"></a> -<span class="sourceLineNo">188</span> if (c.unfinishedReplicas.isEmpty()) {<a name="line.188"></a> -<span class="sourceLineNo">189</span> c.promise.trySuccess(null);<a name="line.189"></a> -<span class="sourceLineNo">190</span> // since we will remove the Callback entry from waitingAckQueue if its unfinishedReplicas<a name="line.190"></a> -<span class="sourceLineNo">191</span> // is empty, so this could only happen at the head of waitingAckQueue, so we just call<a name="line.191"></a> -<span class="sourceLineNo">192</span> // removeFirst here.<a name="line.192"></a> -<span class="sourceLineNo">193</span> waitingAckQueue.removeFirst();<a name="line.193"></a> -<span class="sourceLineNo">194</span> // also wake up flush requests which have the same length.<a name="line.194"></a> -<span class="sourceLineNo">195</span> for (Callback cb; (cb = waitingAckQueue.peekFirst()) != null;) {<a name="line.195"></a> -<span class="sourceLineNo">196</span> if (cb.ackedLength == c.ackedLength) {<a name="line.196"></a> -<span class="sourceLineNo">197</span> cb.promise.trySuccess(null);<a name="line.197"></a> -<span class="sourceLineNo">198</span> waitingAckQueue.removeFirst();<a name="line.198"></a> -<span class="sourceLineNo">199</span> } else {<a name="line.199"></a> -<span class="sourceLineNo">200</span> break;<a name="line.200"></a> -<span class="sourceLineNo">201</span> }<a name="line.201"></a> -<span class="sourceLineNo">202</span> }<a name="line.202"></a> -<span class="sourceLineNo">203</span> }<a name="line.203"></a> -<span class="sourceLineNo">204</span> return;<a name="line.204"></a> -<span class="sourceLineNo">205</span> }<a name="line.205"></a> -<span class="sourceLineNo">206</span> }<a name="line.206"></a> -<span class="sourceLineNo">207</span> }<a name="line.207"></a> -<span class="sourceLineNo">208</span><a name="line.208"></a> -<span class="sourceLineNo">209</span> private void failed(Channel channel, Supplier<Throwable> errorSupplier) {<a name="line.209"></a> -<span class="sourceLineNo">210</span> if (state == State.BROKEN || state == State.CLOSED) {<a name="line.210"></a> -<span class="sourceLineNo">211</span> return;<a name="line.211"></a> -<span class="sourceLineNo">212</span> }<a name="line.212"></a> -<span class="sourceLineNo">213</span> if (state == State.CLOSING) {<a name="line.213"></a> -<span class="sourceLineNo">214</span> Callback c = waitingAckQueue.peekFirst();<a name="line.214"></a> -<span class="sourceLineNo">215</span> if (c == null || !c.unfinishedReplicas.contains(channel)) {<a name="line.215"></a> -<span class="sourceLineNo">216</span> // nothing, the endBlock request has already finished.<a name="line.216"></a> -<span class="sourceLineNo">217</span> return;<a name="line.217"></a> -<span class="sourceLineNo">218</span> }<a name="line.218"></a> -<span class="sourceLineNo">219</span> }<a name="line.219"></a> -<span class="sourceLineNo">220</span> // disable further write, and fail all pending ack.<a name="line.220"></a> -<span class="sourceLineNo">221</span> state = State.BROKEN;<a name="line.221"></a> -<span class="sourceLineNo">222</span> Throwable error = errorSupplier.get();<a name="line.222"></a> -<span class="sourceLineNo">223</span> waitingAckQueue.stream().forEach(c -> c.promise.tryFailure(error));<a name="line.223"></a> -<span class="sourceLineNo">224</span> waitingAckQueue.clear();<a name="line.224"></a> -<span class="sourceLineNo">225</span> datanodeList.forEach(ch -> ch.close());<a name="line.225"></a> -<span class="sourceLineNo">226</span> }<a name="line.226"></a> -<span class="sourceLineNo">227</span><a name="line.227"></a> -<span class="sourceLineNo">228</span> @Sharable<a name="line.228"></a> -<span class="sourceLineNo">229</span> private final class AckHandler extends SimpleChannelInboundHandler<PipelineAckProto> {<a name="line.229"></a> -<span class="sourceLineNo">230</span><a name="line.230"></a> -<span class="sourceLineNo">231</span> private final int timeoutMs;<a name="line.231"></a> -<span class="sourceLineNo">232</span><a name="line.232"></a> -<span class="sourceLineNo">233</span> public AckHandler(int timeoutMs) {<a name="line.233"></a> -<span class="sourceLineNo">234</span> this.timeoutMs = timeoutMs;<a name="line.234"></a> -<span class="sourceLineNo">235</span> }<a name="line.235"></a> -<span class="sourceLineNo">236</span><a name="line.236"></a> -<span class="sourceLineNo">237</span> @Override<a name="line.237"></a> -<span class="sourceLineNo">238</span> protected void channelRead0(ChannelHandlerContext ctx, PipelineAckProto ack) throws Exception {<a name="line.238"></a> -<span class="sourceLineNo">239</span> Status reply = getStatus(ack);<a name="line.239"></a> -<span class="sourceLineNo">240</span> if (reply != Status.SUCCESS) {<a name="line.240"></a> -<span class="sourceLineNo">241</span> failed(ctx.channel(), () -> new IOException("Bad response " + reply + " for block "<a name="line.241"></a> -<span class="sourceLineNo">242</span> + locatedBlock.getBlock() + " from datanode " + ctx.channel().remoteAddress()));<a name="line.242"></a> -<span class="sourceLineNo">243</span> return;<a name="line.243"></a> -<span class="sourceLineNo">244</span> }<a name="line.244"></a> -<span class="sourceLineNo">245</span> if (PipelineAck.isRestartOOBStatus(reply)) {<a name="line.245"></a> -<span class="sourceLineNo">246</span> failed(ctx.channel(), () -> new IOException("Restart response " + reply + " for block "<a name="line.246"></a> -<span class="sourceLineNo">247</span> + locatedBlock.getBlock() + " from datanode " + ctx.channel().remoteAddress()));<a name="line.247"></a> -<span class="sourceLineNo">248</span> return;<a name="line.248"></a> -<span class="sourceLineNo">249</span> }<a name="line.249"></a> -<span class="sourceLineNo">250</span> if (ack.getSeqno() == HEART_BEAT_SEQNO) {<a name="line.250"></a> -<span class="sourceLineNo">251</span> return;<a name="line.251"></a> -<span class="sourceLineNo">252</span> }<a 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class="sourceLineNo">405</span> }<a name="line.405"></a> -<span class="sourceLineNo">406</span> });<a name="line.406"></a> -<span class="sourceLineNo">407</span> waitingAckQueue.addLast(new Callback(promise, ackedLength, datanodeList));<a name="line.407"></a> -<span class="sourceLineNo">408</span> for (Channel ch : datanodeList) {<a name="line.408"></a> -<span class="sourceLineNo">409</span> ch.write(headerBuf.duplicate().retain());<a name="line.409"></a> -<span class="sourceLineNo">410</span> ch.write(checksumBuf.duplicate().retain());<a name="line.410"></a> -<span class="sourceLineNo">411</span> ch.writeAndFlush(dataBuf.duplicate().retain());<a name="line.411"></a> -<span class="sourceLineNo">412</span> }<a name="line.412"></a> -<span class="sourceLineNo">413</span> checksumBuf.release();<a name="line.413"></a> -<span class="sourceLineNo">414</span> headerBuf.release();<a name="line.414"></a> -<span class="sourceLineNo">415</span> dataBuf.release();<a name="line.415"></a> -<span 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ByteBuf encryptBuf = alloc.directBuffer(dataLen);<a name="line.427"></a> -<span class="sourceLineNo">428</span> try {<a name="line.428"></a> -<span class="sourceLineNo">429</span> encryptor.encrypt(buf.nioBuffer(buf.readerIndex(), dataLen),<a name="line.429"></a> -<span class="sourceLineNo">430</span> encryptBuf.nioBuffer(0, dataLen));<a name="line.430"></a> -<span class="sourceLineNo">431</span> } catch (IOException e) {<a name="line.431"></a> -<span class="sourceLineNo">432</span> encryptBuf.release();<a name="line.432"></a> -<span class="sourceLineNo">433</span> future.completeExceptionally(e);<a name="line.433"></a> -<span class="sourceLineNo">434</span> return;<a name="line.434"></a> -<span class="sourceLineNo">435</span> }<a name="line.435"></a> -<span class="sourceLineNo">436</span> encryptBuf.writerIndex(dataLen);<a name="line.436"></a> -<span class="sourceLineNo">437</span> buf.release();<a name="line.437"></a> -<span class="sourceLineNo">438</span> buf = encryptBuf;<a 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nextPacketOffsetInBlock += dataLen - trailingPartialChunkLen;<a name="line.489"></a> -<span class="sourceLineNo">490</span> }<a name="line.490"></a> -<span class="sourceLineNo">491</span><a name="line.491"></a> -<span class="sourceLineNo">492</span> /**<a name="line.492"></a> -<span class="sourceLineNo">493</span> * Flush the buffer out to datanodes.<a name="line.493"></a> -<span class="sourceLineNo">494</span> * @param syncBlock will call hsync if true, otherwise hflush.<a name="line.494"></a> -<span class="sourceLineNo">495</span> * @return A CompletableFuture that hold the acked length after flushing.<a name="line.495"></a> -<span class="sourceLineNo">496</span> */<a name="line.496"></a> -<span class="sourceLineNo">497</span> public CompletableFuture<Long> flush(boolean syncBlock) {<a name="line.497"></a> -<span class="sourceLineNo">498</span> CompletableFuture<Long> future = new CompletableFuture<>();<a name="line.498"></a> -<span class="sourceLineNo">499</span> if (eventLoop.inEventLoop()) {<a name="line.499"></a> -<span class="sourceLineNo">500</span> flush0(future, syncBlock);<a name="line.500"></a> -<span class="sourceLineNo">501</span> } else {<a name="line.501"></a> -<span class="sourceLineNo">502</span> eventLoop.execute(() -> flush0(future, syncBlock));<a name="line.502"></a> -<span class="sourceLineNo">503</span> }<a name="line.503"></a> -<span class="sourceLineNo">504</span> return future;<a name="line.504"></a> -<span class="sourceLineNo">505</span> }<a name="line.505"></a> -<span class="sourceLineNo">506</span><a name="line.506"></a> -<span class="sourceLineNo">507</span> private void endBlock(Promise<Void> promise, long size) {<a name="line.507"></a> -<span class="sourceLineNo">508</span> if (state != State.STREAMING) {<a name="line.508"></a> -<span class="sourceLineNo">509</span> promise.tryFailure(new IOException("stream already broken"));<a name="line.509"></a> -<span class="sourceLineNo">510</span> return;<a name="line.510"></a> -<span class="sourceLineNo">511</span> }<a name="line.511"></a> -<span class="sourceLineNo">512</span> if (!waitingAckQueue.isEmpty()) {<a name="line.512"></a> -<span class="sourceLineNo">513</span> promise.tryFailure(new IllegalStateException("should call flush first before calling close"));<a name="line.513"></a> -<span class="sourceLineNo">514</span> return;<a name="line.514"></a> -<span class="sourceLineNo">515</span> }<a name="line.515"></a> -<span class="sourceLineNo">516</span> state = State.CLOSING;<a name="line.516"></a> -<span class="sourceLineNo">517</span> PacketHeader header = new PacketHeader(4, size, nextPacketSeqno, true, 0, false);<a name="line.517"></a> -<span class="sourceLineNo">518</span> buf.release();<a name="line.518"></a> -<span class="sourceLineNo">519</span> buf = null;<a name="line.519"></a> -<span class="sourceLineNo">520</span> int headerLen = header.getSerializedSize();<a name="line.520"></a> -<span class="sourceLineNo">521</span> ByteBuf headerBuf = alloc.directBuffer(headerLen);<a name="line.521"></a> -<span class="sourceLineNo">522</span> header.putInBuffer(headerBuf.nioBuffer(0, headerLen));<a name="line.522"></a> -<span class="sourceLineNo">523</span> headerBuf.writerIndex(headerLen);<a name="line.523"></a> -<span class="sourceLineNo">524</span> waitingAckQueue.add(new Callback(promise, size, datanodeList));<a name="line.524"></a> -<span class="sourceLineNo">525</span> datanodeList.forEach(ch -> ch.writeAndFlush(headerBuf.duplicate().retain()));<a name="line.525"></a> -<span class="sourceLineNo">526</span> headerBuf.release();<a name="line.526"></a> -<span class="sourceLineNo">527</span> }<a name="line.527"></a> -<span class="sourceLineNo">528</span><a name="line.528"></a> -<span class="sourceLineNo">529</span> /**<a name="line.529"></a> -<span class="sourceLineNo">530</span> * The close method when error occurred. Now we just call recoverFileLease.<a name="line.530"></a> -<span class="sourceLineNo">531</span> */<a name="line.531"></a> -<span class="sourceLineNo">532</span> @Override<a name="line.532"></a> -<span class="sourceLineNo">533</span> public void recoverAndClose(CancelableProgressable reporter) throws IOException {<a name="line.533"></a> -<span class="sourceLineNo">534</span> assert !eventLoop.inEventLoop();<a name="line.534"></a> -<span class="sourceLineNo">535</span> datanodeList.forEach(ch -> ch.closeFuture().awaitUninterruptibly());<a name="line.535"></a> -<span class="sourceLineNo">536</span> endFileLease(client, fileId);<a name="line.536"></a> -<span class="sourceLineNo">537</span> fsUtils.recoverFileLease(dfs, new Path(src), conf,<a name="line.537"></a> -<span class="sourceLineNo">538</span> reporter == null ? new CancelOnClose(client) : reporter);<a name="line.538"></a> -<span class="sourceLineNo">539</span> }<a name="line.539"></a> -<span class="sourceLineNo">540</span><a name="line.540"></a> -<span class="sourceLineNo">541</span> /**<a name="line.541"></a> -<span class="sourceLineNo">542</span> * End the current block and complete file at namenode. You should call<a name="line.542"></a> -<span class="sourceLineNo">543</span> * {@link #recoverAndClose(CancelableProgressable)} if this method throws an exception.<a name="line.543"></a> -<span class="sourceLineNo">544</span> */<a name="line.544"></a> -<span class="sourceLineNo">545</span> @Override<a name="line.545"></a> -<span class="sourceLineNo">546</span> public void close() throws IOException {<a name="line.546"></a> -<span class="sourceLineNo">547</span> assert !eventLoop.inEventLoop();<a name="line.547"></a> -<span class="sourceLineNo">548</span> Promise<Void> promise = eventLoop.newPromise();<a name="line.548"></a> -<span class="sourceLineNo">549</span> eventLoop.execute(() -> endBlock(promise, nextPacketOffsetInBlock + buf.readableBytes()));<a name="line.549"></a> -<span class="sourceLineNo">550</span> promise.addListener(f -> datanodeList.forEach(ch -> ch.close())).syncUninterruptibly();<a name="line.550"></a> -<span class="sourceLineNo">551</span> datanodeList.forEach(ch -> ch.closeFuture().awaitUninterruptibly());<a name="line.551"></a> -<span class="sourceLineNo">552</span> completeFile(client, namenode, src, clientName, locatedBlock.getBlock(), fileId);<a name="line.552"></a> -<span class="sourceLineNo">553</span> }<a name="line.553"></a> -<span class="sourceLineNo">554</span><a name="line.554"></a> -<span class="sourceLineNo">555</span> @VisibleForTesting<a name="line.555"></a> -<span class="sourceLineNo">556</span> int guess(int bytesWritten) {<a name="line.556"></a> -<span class="sourceLineNo">557</span> // if the bytesWritten is greater than the current capacity<a name="line.557"></a> -<span class="sourceLineNo">558</span> // always increase the capacity in powers of 2.<a name="line.558"></a> -<span class="sourceLineNo">559</span> if (bytesWritten > this.capacity) {<a name="line.559"></a> -<span class="sourceLineNo">560</span> // Ensure we don't cross the LIMIT<a name="line.560"></a> -<span class="sourceLineNo">561</span> if ((this.capacity << 1) <= LIMIT) {<a name="line.561"></a> -<span class="sourceLineNo">562</span> // increase the capacity in the range of power of 2<a name="line.562"></a> -<span class="sourceLineNo">563</span> this.capacity = this.capacity << 1;<a name="line.563"></a> -<span class="sourceLineNo">564</span> }<a name="line.564"></a> -<span class="sourceLineNo">565</span> } else {<a name="line.565"></a> -<span class="sourceLineNo">566</span> // if we see that the bytesWritten is lesser we could again decrease<a name="line.566"></a> -<span class="sourceLineNo">567</span> // the capacity by dividing it by 2 if the bytesWritten is satisfied by<a name="line.567"></a> -<span class="sourceLineNo">568</span> // that reduction<a name="line.568"></a> -<span class="sourceLineNo">569</span> if ((this.capacity >> 1) >= bytesWritten) {<a name="line.569"></a> -<span class="sourceLineNo">570</span> this.capacity = this.capacity >> 1;<a name="line.570"></a> -<span class="sourceLineNo">571</span> }<a name="line.571"></a> -<span class="sourceLineNo">572</span> }<a name="line.572"></a> -<span class="sourceLineNo">573</span> return this.capacity;<a name="line.573"></a> -<span class="sourceLineNo">574</span> }<a name="line.574"></a> -<span class="sourceLineNo">575</span>}<a name="line.575"></a> +<span class="sourceLineNo">029</span><a name="line.29"></a> +<span class="sourceLineNo">030</span>import io.netty.buffer.ByteBuf;<a name="line.30"></a> +<span class="sourceLineNo">031</span>import io.netty.buffer.ByteBufAllocator;<a name="line.31"></a> +<span class="sourceLineNo">032</span>import io.netty.channel.Channel;<a name="line.32"></a> +<span class="sourceLineNo">033</span>import io.netty.channel.ChannelHandler.Sharable;<a name="line.33"></a> +<span class="sourceLineNo">034</span>import io.netty.channel.ChannelHandlerContext;<a name="line.34"></a> +<span class="sourceLineNo">035</span>import io.netty.channel.EventLoop;<a name="line.35"></a> +<span class="sourceLineNo">036</span>import io.netty.channel.SimpleChannelInboundHandler;<a name="line.36"></a> +<span class="sourceLineNo">037</span>import io.netty.handler.codec.protobuf.ProtobufDecoder;<a name="line.37"></a> +<span class="sourceLineNo">038</span>import io.netty.handler.codec.protobuf.ProtobufVarint32FrameDecoder;<a name="line.38"></a> +<span class="sourceLineNo">039</span>import io.netty.handler.timeout.IdleStateEvent;<a name="line.39"></a> +<span class="sourceLineNo">040</span>import io.netty.handler.timeout.IdleStateHandler;<a name="line.40"></a> +<span class="sourceLineNo">041</span>import io.netty.util.concurrent.Future;<a name="line.41"></a> +<span class="sourceLineNo">042</span>import io.netty.util.concurrent.Promise;<a name="line.42"></a> +<span class="sourceLineNo">043</span>import io.netty.util.concurrent.PromiseCombiner;<a name="line.43"></a> +<span class="sourceLineNo">044</span><a name="line.44"></a> +<span class="sourceLineNo">045</span>import java.io.IOException;<a name="line.45"></a> +<span class="sourceLineNo">046</span>import java.nio.ByteBuffer;<a name="line.46"></a> +<span class="sourceLineNo">047</span>import java.util.ArrayDeque;<a name="line.47"></a> +<span class="sourceLineNo">048</span>import java.util.Collection;<a name="line.48"></a> +<span class="sourceLineNo">049</span>import java.util.Collections;<a name="line.49"></a> +<span class="sourceLineNo">050</span>import java.util.Deque;<a name="line.50"></a> +<span class="sourceLineNo">051</span>import java.util.IdentityHashMap;<a name="line.51"></a> +<span class="sourceLineNo">052</span>import java.util.List;<a name="line.52"></a> +<span class="sourceLineNo">053</span>import java.util.Set;<a name="line.53"></a> +<span class="sourceLineNo">054</span>import java.util.concurrent.CompletableFuture;<a name="line.54"></a> +<span class="sourceLineNo">055</span>import java.util.concurrent.TimeUnit;<a name="line.55"></a> +<span class="sourceLineNo">056</span>import java.util.function.Supplier;<a name="line.56"></a> +<span class="sourceLineNo">057</span><a name="line.57"></a> +<span class="sourceLineNo">058</span>import org.apache.hadoop.conf.Configuration;<a name="line.58"></a> +<span class="sourceLineNo">059</span>import org.apache.hadoop.crypto.Encryptor;<a name="line.59"></a> +<span class="sourceLineNo">060</span>import org.apache.hadoop.fs.Path;<a name="line.60"></a> +<span class="sourceLineNo">061</span>import org.apache.hadoop.hbase.classification.InterfaceAudience;<a name="line.61"></a> +<span class="sourceLineNo">062</span>import org.apache.hadoop.hbase.io.asyncfs.FanOutOneBlockAsyncDFSOutputHelper.CancelOnClose;<a name="line.62"></a> +<span class="sourceLineNo">063</span>import org.apache.hadoop.hbase.util.CancelableProgressable;<a name="line.63"></a> +<span class="sourceLineNo">064</span>import org.apache.hadoop.hbase.util.FSUtils;<a name="line.64"></a> +<span class="sourceLineNo">065</span>import org.apache.hadoop.hdfs.DFSClient;<a name="line.65"></a> +<span class="sourceLineNo">066</span>import org.apache.hadoop.hdfs.DistributedFileSystem;<a name="line.66"></a> +<span class="sourceLineNo">067</span>import org.apache.hadoop.hdfs.protocol.ClientProtocol;<a name="line.67"></a> +<span class="sourceLineNo">068</span>import org.apache.hadoop.hdfs.protocol.DatanodeInfo;<a name="line.68"></a> +<span class="sourceLineNo">069</span>import org.apache.hadoop.hdfs.protocol.LocatedBlock;<a name="line.69"></a> +<span class="sourceLineNo">070</span>import org.apache.hadoop.hdfs.protocol.datatransfer.PacketHeader;<a name="line.70"></a> +<span class="sourceLineNo">071</span>import org.apache.hadoop.hdfs.protocol.datatransfer.PipelineAck;<a name="line.71"></a> +<span class="sourceLineNo">072</span>import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.PipelineAckProto;<a name="line.72"></a> +<span class="sourceLineNo">073</span>import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.Status;<a name="line.73"></a> +<span class="sourceLineNo">074</span>import org.apache.hadoop.util.DataChecksum;<a name="line.74"></a> +<span class="sourceLineNo">075</span><a name="line.75"></a> +<span class="sourceLineNo">076</span>import org.apache.hadoop.hbase.shaded.com.google.common.annotations.VisibleForTesting;<a name="line.76"></a> +<span class="sourceLineNo">077</span><a name="line.77"></a> +<span class="sourceLineNo">078</span>/**<a name="line.78"></a> +<span class="sourceLineNo">079</span> * An asynchronous HDFS output stream implementation which fans out data to datanode and only<a name="line.79"></a> +<span class="sourceLineNo">080</span> * supports writing file with only one block.<a name="line.80"></a> +<span class="sourceLineNo">081</span> * <p><a name="line.81"></a> +<span class="sourceLineNo">082</span> * Use the createOutput method in {@link FanOutOneBlockAsyncDFSOutputHelper} to create. The mainly<a name="line.82"></a> +<span class="sourceLineNo">083</span> * usage of this class is implementing WAL, so we only expose a little HDFS configurations in the<a name="line.83"></a> +<span class="sourceLineNo">084</span> * method. And we place it here under util package because we want to make it independent of WAL<a name="line.84"></a> +<span class="sourceLineNo">085</span> * implementation thus easier to move it to HDFS project finally.<a name="line.85"></a> +<span class="sourceLineNo">086</span> * <p><a name="line.86"></a> +<span class="sourceLineNo">087</span> * Note that, all connections to datanode will run in the same {@link EventLoop} which means we only<a name="line.87"></a> +<span class="sourceLineNo">088</span> * need one thread here. But be careful, we do some blocking operations in {@link #close()} and<a name="line.88"></a> +<span class="sourceLineNo">089</span> * {@link #recoverAndClose(CancelableProgressable)} methods, so do not call them inside<a name="line.89"></a> +<span class="sourceLineNo">090</span> * {@link EventLoop}. And for {@link #write(byte[])} {@link #write(byte[], int, int)},<a name="line.90"></a> +<span class="sourceLineNo">091</span> * {@link #buffered()} and {@link #flush(boolean)}, if you call them outside {@link EventLoop},<a name="line.91"></a> +<span class="sourceLineNo">092</span> * there will be an extra context-switch.<a name="line.92"></a> +<span class="sourceLineNo">093</span> * <p><a name="line.93"></a> +<span class="sourceLineNo">094</span> * Advantages compare to DFSOutputStream:<a name="line.94"></a> +<span class="sourceLineNo">095</span> * <ol><a name="line.95"></a> +<span class="sourceLineNo">096</span> * <li>The fan out mechanism. This will reduce the latency.</li><a name="line.96"></a> +<span class="sourceLineNo">097</span> * <li>The asynchronous WAL could also run in the same EventLoop, we could just call write and flush<a name="line.97"></a> +<span class="sourceLineNo">098</span> * inside the EventLoop thread, so generally we only have one thread to do all the things.</li><a name="line.98"></a> +<span class="sourceLineNo">099</span> * <li>Fail-fast when connection to datanode error. The WAL implementation could open new writer<a name="line.99"></a> +<span class="sourceLineNo">100</span> * ASAP.</li><a name="line.100"></a> +<span class="sourceLineNo">101</span> * <li>We could benefit from netty's ByteBuf management mechanism.</li><a name="line.101"></a> +<span class="sourceLineNo">102</span> * </ol><a name="line.102"></a> +<span class="sourceLineNo">103</span> */<a name="line.103"></a> +<span class="sourceLineNo">104</span>@InterfaceAudience.Private<a name="line.104"></a> +<span class="sourceLineNo">105</span>public class FanOutOneBlockAsyncDFSOutput implements AsyncFSOutput {<a name="line.105"></a> +<span class="sourceLineNo">106</span><a name="line.106"></a> +<span class="sourceLineNo">107</span> // The MAX_PACKET_SIZE is 16MB but it include the header size and checksum size. So here we set a<a name="line.107"></a> +<span class="sourceLineNo">108</span> // smaller limit for data size.<a name="line.108"></a> +<span class="sourceLineNo">109</span> private static final int MAX_DATA_LEN = 12 * 1024 * 1024;<a name="line.109"></a> +<span class="sourceLineNo">110</span><a name="line.110"></a> +<span class="sourceLineNo">111</span> private final Configuration conf;<a name="line.111"></a> +<span class="sourceLineNo">112</span><a name="line.112"></a> +<span class="sourceLineNo">113</span> private final FSUtils fsUtils;<a name="line.113"></a> +<span class="sourceLineNo">114</span><a name="line.114"></a> +<span class="sourceLineNo">115</span> private final DistributedFileSystem dfs;<a name="line.115"></a> +<span class="sourceLineNo">116</span><a name="line.116"></a> +<span class="sourceLineNo">117</span> private final DFSClient client;<a name="line.117"></a> +<span class="sourceLineNo">118</span><a name="line.118"></a> +<span class="sourceLineNo">119</span> private final ClientProtocol namenode;<a name="line.119"></a> +<span class="sourceLineNo">120</span><a name="line.120"></a> +<span class="sourceLineNo">121</span> private final String clientName;<a name="line.121"></a> +<span class="sourceLineNo">122</span><a name="line.122"></a> +<span class="sourceLineNo">123</span> private final String src;<a name="line.123"></a> +<span class="sourceLineNo">124</span><a name="line.124"></a> +<span class="sourceLineNo">125</span> private final long fileId;<a name="line.125"></a> +<span class="sourceLineNo">126</span><a name="line.126"></a> +<span class="sourceLineNo">127</span> private final LocatedBlock locatedBlock;<a name="line.127"></a> +<span class="sourceLineNo">128</span><a name="line.128"></a> +<span class="sourceLineNo">129</span> private final Encryptor encryptor;<a name="line.129"></a> +<span class="sourceLineNo">130</span><a name="line.130"></a> +<span class="sourceLineNo">131</span> private final EventLoop eventLoop;<a name="line.131"></a> +<span class="sourceLineNo">132</span><a name="line.132"></a> +<span class="sourceLineNo">133</span> private final List<Channel> datanodeList;<a name="line.133"></a> +<span class="sourceLineNo">134</span><a name="line.134"></a> +<span class="sourceLineNo">135</span> private final DataChecksum summer;<a name="line.135"></a> +<span class="sourceLineNo">136</span><a name="line.136"></a> +<span class="sourceLineNo">137</span> private final int maxDataLen;<a name="line.137"></a> +<span class="sourceLineNo">138</span><a name="line.138"></a> +<span class="sourceLineNo">139</span> private final ByteBufAllocator alloc;<a name="line.139"></a> +<span class="sourceLineNo">140</span><a name="line.140"></a> +<span class="sourceLineNo">141</span> private static final class Callback {<a name="line.141"></a> +<span class="sourceLineNo">142</span><a name="line.142"></a> +<span class="sourceLineNo">143</span> private final Promise<Void> promise;<a name="line.143"></a> +<span class="sourceLineNo">144</span><a name="line.144"></a> +<span class="sourceLineNo">145</span> private final long ackedLength;<a name="line.145"></a> +<span class="sourceLineNo">146</span><a name="line.146"></a> +<span class="sourceLineNo">147</span> private final Set<Channel> unfinishedReplicas;<a name="line.147"></a> +<span class="sourceLineNo">148</span><a name="line.148"></a> +<span class="sourceLineNo">149</span> public Callback(Promise<Void> promise, long ackedLength, Collection<Channel> replicas) {<a name="line.149"></a> +<span class="sourceLineNo">150</span> this.promise = promise;<a name="line.150"></a> +<span class="sourceLineNo">151</span> this.ackedLength = ackedLength;<a name="line.151"></a> +<span class="sourceLineNo">152</span> if (replicas.isEmpty()) {<a name="line.152"></a> +<span class="sourceLineNo">153</span> this.unfinishedReplicas = Collections.emptySet();<a name="line.153"></a> +<span class="sourceLineNo">154</span> } else {<a name="line.154"></a> +<span class="sourceLineNo">155</span> this.unfinishedReplicas =<a name="line.155"></a> +<span class="sourceLineNo">156</span> Collections.newSetFromMap(new IdentityHashMap<Channel, Boolean>(replicas.size()));<a name="line.156"></a> +<span class="sourceLineNo">157</span> this.unfinishedReplicas.addAll(replicas);<a name="line.157"></a> +<span class="sourceLineNo">158</span> }<a name="line.158"></a> +<span class="sourceLineNo">159</span> }<a name="line.159"></a> +<span class="sourceLineNo">160</span> }<a name="line.160"></a> +<span class="sourceLineNo">161</span><a name="line.161"></a> +<span class="sourceLineNo">162</span> private final Deque<Callback> waitingAckQueue = new ArrayDeque<>();<a name="line.162"></a> +<span class="sourceLineNo">163</span><a name="line.163"></a> +<span class="sourceLineNo">164</span> // this could be different from acked block length because a packet can not start at the middle of<a name="line.164"></a> +<span class="sourceLineNo">165</span> // a chunk.<a name="line.165"></a> +<span class="sourceLineNo">166</span> private long nextPacketOffsetInBlock = 0L;<a name="line.166"></a> +<span class="sourceLineNo">167</span><a name="line.167"></a> +<span class="sourceLineNo">168</span> private long nextPacketSeqno = 0L;<a name="line.168"></a> +<span class="sourceLineNo">169</span><a name="line.169"></a> +<span class="sourceLineNo">170</span> private ByteBuf buf;<a name="line.170"></a> +<span class="sourceLineNo">171</span> // buf's initial capacity - 4KB<a name="line.171"></a> +<span class="sourceLineNo">172</span> private int capacity = 4 * 1024;<a name="line.172"></a> +<span class="sourceLineNo">173</span><a name="line.173"></a> +<span class="sourceLineNo">174</span> // LIMIT is 128MB<a name="line.174"></a> +<span class="sourceLineNo">175</span> private static final int LIMIT = 128 * 1024 * 1024;<a name="line.175"></a> +<span class="sourceLineNo">176</span><a name="line.176"></a> +<span class="sourceLineNo">177</span> private enum State {<a name="line.177"></a> +<span class="sourceLineNo">178</span> STREAMING, CLOSING, BROKEN, CLOSED<a name="line.178"></a> +<span class="sourceLineNo">179</span> }<a name="line.179"></a> +<span class="sourceLineNo">180</span><a name="line.180"></a> +<span class="sourceLineNo">181</span> private State state;<a name="line.181"></a> +<span class="sourceLineNo">182</span><a name="line.182"></a> +<span class="sourceLineNo">183</span> private void completed(Channel channel) {<a name="line.183"></a> +<span class="sourceLineNo">184</span> if (waitingAckQueue.isEmpty()) {<a name="line.184"></a> +<span class="sourceLineNo">185</span> return;<a name="line.185"></a> +<span class="sourceLineNo">186</span> }<a name="line.186"></a> +<span class="sourceLineNo">187</span> for (Callback c : waitingAckQueue) {<a name="line.187"></a> +<span class="sourceLineNo">188</span> if (c.unfinishedReplicas.remove(channel)) {<a name="line.188"></a> +<span class="sourceLineNo">189</span> if (c.unfinishedReplicas.isEmpty()) {<a name="line.189"></a> +<span class="sourceLineNo">190</span> c.promise.trySuccess(null);<a name="line.190"></a> +<span class="sourceLineNo">191</span> // since we will remove the Callback entry from waitingAckQueue if its unfinishedReplicas<a name="line.191"></a> +<span class="sourceLineNo">192</span> // is empty, so this could only happen at the head of waitingAckQueue, so we just call<a name="line.192"></a> +<span class="sourceLineNo">193</span> // removeFirst here.<a name="line.193"></a> +<span class="sourceLineNo">194</span> waitingAckQueue.removeFirst();<a name="line.194"></a> +<span class="sourceLineNo">195</span> // also wake up flush requests which have the same length.<a name="line.195"></a> +<span class="sourceLineNo">196</span> for (Callback cb; (cb = waitingAckQueue.peekFirst()) != null;) {<a name="line.196"></a> +<span class="sourceLineNo">197</span> if (cb.ackedLength == c.ackedLength) {<a name="line.197"></a> +<span class="sourceLineNo">198</span> cb.promise.trySuccess(null);<a name="line.198"></a> +<span class="sourceLineNo">199</span> waitingAckQueue.removeFirst();<a name="line.199"></a> +<span class="sourceLineNo">200</span> } else {<a name="line.200"></a> +<span class="sourceLineNo">201</span> break;<a name="line.201"></a> +<span class="sourceLineNo">202</span> }<a name="line.202"></a> +<span class="sourceLineNo">203</span> }<a name="line.203"></a> +<span class="sourceLineNo">204</span> }<a name="line.204"></a> +<span class="sourceLineNo">205</span> return;<a name="line.205"></a> +<span class="sourceLineNo">206</span> }<a name="line.206"></a> +<span class="sourceLineNo">207</span> }<a name="line.207"></a> +<span class="sourceLineNo">208</span> }<a name="line.208"></a> +<span class="sourceLineNo">209</span><a name="line.209"></a> +<span class="sourceLineNo">210</span> private void failed(Channel channel, Supplier<Throwable> errorSupplier) {<a name="line.210"></a> +<span class="sourceLineNo">211</span> if (state == State.BROKEN || state == State.CLOSED) {<a name="line.211"></a> +<span class="sourceLineNo">212</span> return;<a name="line.212"></a> +<span class="sourceLineNo">213</span> }<a name="line.213"></a> +<span class="sourceLineNo">214</span> if (state == State.CLOSING) {<a name="line.214"></a> +<span class="sourceLineNo">215</span> Callback c = waitingAckQueue.peekFirst();<a name="line.215"></a> +<span class="sourceLineNo">216</span> if (c == null || !c.unfinishedReplicas.contains(channel)) {<a name="line.216"></a> +<span class="sourceLineNo">217</span> // nothing, the endBlock request has already finished.<a name="line.217"></a> +<span class="sourceLineNo">218</span> return;<a name="line.218"></a> +<span class="sourceLineNo">219</span> }<a name="line.219"></a> +<span class="sourceLineNo">220</span> }<a name="line.220"></a> +<span class="sourceLineNo">221</span> // disable further write, and fail all pending ack.<a name="line.221"></a> +<span class="sourceLineNo">222</span> state = State.BROKEN;<a name="line.222"></a> +<span class="sourceLineNo">223</span> Throwable error = errorSupplier.get();<a name="line.223"></a> +<span class="sourceLineNo">224</span> waitingAckQueue.stream().forEach(c -> c.promise.tryFailure(error));<a name="line.224"></a> +<span class="sourceLineNo">225</span> waitingAckQueue.clear();<a name="line.225"></a> +<span class="sourceLineNo">226</span> datanodeList.forEach(ch -> ch.close());<a name="line.226"></a> +<span class="sourceLineNo">227</span> }<a name="line.227"></a> +<span class="sourceLineNo">228</span><a name="line.228"></a> +<span class="sourceLineNo">229</span> @Sharable<a name="line.229"></a> +<span class="sourceLineNo">230</span> private final class AckHandler extends SimpleChannelInboundHandler<PipelineAckProto> {<a name="line.230"></a> +<span class="sourceLineNo">231</span><a name="line.231"></a> +<span class="sourceLineNo">232</span> private final int timeoutMs;<a name="line.232"></a> +<span class="sourceLineNo">233</span><a name="line.233"></a> +<span class="sourceLineNo">234</span> public AckHandler(int timeoutMs) {<a name="line.234"></a> +<span class="sourceLineNo">235</span> this.timeoutMs = timeoutMs;<a name="line.235"></a> +<span class="sourceLineNo">236</span> }<a name="line.236"></a> +<span class="sourceLineNo">237</span><a name="line.237"></a> +<span class="sourceLineNo">238</span> @Override<a name="line.238"></a> +<span class="sourceLineNo">239</span> protected void channelRead0(ChannelHandlerContext ctx, PipelineAckProto ack) throws Exception {<a name="line.239"></a> +<span class="sourceLineNo">240</span> Status reply = getStatus(ack);<a name="line.240"></a> +<span class="sourceLineNo">241</span> if (reply != Status.SUCCESS) {<a name="line.241"></a> +<span class="sourceLineNo">242</span> failed(ctx.channel(), () -> new IOException("Bad response " + reply + " for block "<a name="line.242"></a> +<span class="sourceLineNo">243</span> + locatedBlock.getBlock() + " from datanode " + ctx.channel().remoteAddress()));<a name="line.243"></a> +<span class="sourceLineNo">244</span> return;<a name="line.244"></a> +<span class="sourceLineNo">245</span> }<a name="line.245"></a> +<span class="sourceLineNo">246</span> if (PipelineAck.isRestartOOBStatus(reply)) {<a name="line.246"></a> +<span class="sourceLineNo">247</span> failed(ctx.channel(), () -> new IOException("Restart response " + reply + " for block "<a name="line.247"></a> +<span class="sourceLineNo">248</span> + locatedBlock.getBlock() + " from datanode " + ctx.channel().remoteAddress()));<a name="line.248"></a> +<span class="sourceLineNo">249</span> return;<a name="line.249"></a> +<span class="sourceLineNo">250</span> }<a name="line.250"></a> +<span class="sourceLineNo">251</span> if (ack.getSeqno() == HEART_BEAT_SEQNO) {<a name="line.251"></a> +<span class="sourceLineNo">252</span> return;<a name="line.252"></a> +<span class="sourceLineNo">253</span> }<a name="line.253"></a> +<span class="sourceLineNo">254</span> completed(ctx.channel());<a name="line.254"></a> +<span class="sourceLineNo">255</span> }<a name="line.255"></a> +<span class="sourceLineNo">256</span><a name="line.256"></a> +<span class="sourceLineNo">257</span> @Override<a name="line.257"></a> +<span class="sourceLineNo">258</span> public void channelInactive(ChannelHandlerContext ctx) throws Exception {<a name="line.258"></a> +<span class="sourceLineNo">259</span> failed(ctx.channel(),<a name="line.259"></a> +<span class="sourceLineNo">260</span> () -> new IOException("Connection to " + ctx.channel().remoteAddress() + " closed"));<a name="line.260"></a> +<span class="sourceLineNo">261</span> }<a name="line.261"></a> +<span class="sourceLineNo">262</span><a name="line.262"></a> +<span class="sourceLineNo">263</span> @Override<a name="line.263"></a> +<span class="sourceLineNo">264</span> public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {<a name="line.264"></a> +<span class="sourceLineNo">265</span> failed(ctx.channel(), () -> cause);<a name="line.265"></a> +<span class="sourceLineNo">266</span> }<a name="line.266"></a> +<span class="sourceLineNo">267</span><a name="line.267"></a> +<span class="sourceLineNo">268</span> @Override<a name="line.268"></a> +<span class="sourceLineNo">269</span> public void userEventTriggered(ChannelHandlerContext ctx, Object evt) throws Exception {<a name="line.269"></a> +<span class="sourceLineNo">270</span> if (evt instanceof IdleStateEvent) {<a name="line.270"></a> +<span class="sourceLineNo">271</span> IdleStateEvent e = (IdleStateEvent) evt;<a name="line.271"></a> +<span class="sourceLineNo">272</span> if (e.state() == READER_IDLE) {<a name="line.272"></a> +<span class="sourceLineNo">273</span> failed(ctx.channel(),<a name="line.273"></a> +<span class="sourceLineNo">274</span> () -> new IOException("Timeout(" + timeoutMs + "ms) waiting for response"));<a name="line.274"></a> +<span class="sourceLineNo">275</span> } else if (e.state() == WRITER_IDLE) {<a name="line.275"></a> +<span class="sourceLineNo">276</span> PacketHeader heartbeat = new PacketHeader(4, 0, HEART_BEAT_SEQNO, false, 0, false);<a name="line.276"></a> +<span class="sourceLineNo">277</span> int len = heartbeat.getSerializedSize();<a name="line.277"></a> +<span class="sourceLineNo">278</span> ByteBuf buf = alloc.buffer(len);<a name="line.278"></a> +<span class="sourceLineNo">279</span> heartbeat.putInBuffer(buf.nioBuffer(0, len));<a name="line.279"></a> +<span class="sourceLineNo">280</span> buf.writerIndex(len);<a name="line.280"></a> +<span class="sourceLineNo">281</span> ctx.channel().writeAndFlush(buf);<a name="line.281"></a> +<span class="sourceLineNo">282</span> }<a name="line.282"></a> +<span class="sourceLineNo">283</span> return;<a name="line.283"></a> +<span class="sourceLineNo">284</span> }<a name="line.284"></a> +<span class="sourceLineNo">285</span> super.userEventTriggered(ctx, evt);<a name="line.285"></a> +<span class="sourceLineNo">286</span> }<a name="line.286"></a> +<span class="sourceLineNo">287</span> }<a name="line.287"></a> +<span class="sourceLineNo">288</span><a name="line.288"></a> +<span class="sourceLineNo">289</span> private void setupReceiver(int timeoutMs) {<a name="line.289"></a> +<span class="sourceLineNo">290</span> AckHandler ackHandler = new AckHandler(timeoutMs);<a name="line.290"></a> +<span class="sourceLineNo">291</span> for (Channel ch : datanodeList) {<a name="line.291"></a> +<span class="sourceLineNo">292</span> ch.pipeline().addLast(<a name="line.292"></a> +<span class="sourceLineNo">293</span> new IdleStateHandler(timeoutMs, timeoutMs / 2, 0, TimeUnit.MILLISECONDS),<a name="line.293"></a> +<span class="sourceLineNo">294</span> new ProtobufVarint32FrameDecoder(),<a name="line.294"></a> +<span class="sourceLineNo">295</span> new ProtobufDecoder(PipelineAckProto.getDefaultInstance()), ackHandler);<a name="line.295"></a> +<span class="sourceLineNo">296</span> ch.config().setAutoRead(true);<a name="line.296"></a> +<span class="sourceLineNo">297</span> }<a name="line.297"></a> +<span class="sourceLineNo">298</span> }<a name="line.298"></a> +<span class="sourceLineNo">299</span><a name="line.299"></a> +<span class="sourceLineNo">300</span> FanOutOneBlockAsyncDFSOutput(Configuration conf, FSUtils fsUtils, DistributedFileSystem dfs,<a name="line.300"></a> +<span class="sourceLineNo">301</span> DFSClient client, ClientProtocol namenode, String clientName, String src, long fileId,<a name="line.301"></a> +<span class="sourceLineNo">302</span> LocatedBlock locatedBlock, Encryptor encryptor, EventLoop eventLoop,<a name="line.302"></a> +<span class="sourceLineNo">303</span> List<Channel> datanodeList, DataChecksum summer, ByteBufAllocator alloc) {<a name="line.303"></a> +<span class="sourceLineNo">304</span> this.conf = conf;<a name="line.304"></a> +<span class="sourceLineNo">305</span> this.fsUtils = fsUtils;<a name="line.305"></a> +<span class="sourceLineNo">306</span> this.dfs = dfs;<a name="line.306"></a> +<span class="sourceLineNo">307</span> this.client = client;<a name="line.307"></a> +<span class="sourceLineNo">308</span> this.namenode = namenode;<a name="line.308"></a> +<span class="sourceLineNo">309</span> this.fileId = fileId;<a name="line.309"></a> +<span class="sourceLineNo">310</span> this.clientName = clientName;<a name="line.310"></a> +<span class="sourceLineNo">311</span> this.src = src;<a name="line.311"></a> +<span class="sourceLineNo">312</span> this.locatedBlock = locatedBlock;<a name="line.312"></a> +<span class="sourceLineNo">313</span> this.encryptor = encryptor;<a name="line.313"></a> +<span class="sourceLineNo">314</span> this.eventLoop = eventLoop;<a name="line.314"></a> +<span class="sourceLineNo">315</span> this.datanodeList = datanodeList;<a name="line.315"></a> +<span class="sourceLineNo">316</span> this.summer = summer;<a name="line.316"></a> +<span class="sourceLineNo">317</span> this.maxDataLen = MAX_DATA_LEN - (MAX_DATA_LEN % summer.getBytesPerChecksum());<a name="line.317"></a> +<span class="sourceLineNo">318</span> this.alloc = alloc;<a name="line.318"></a> +<span class="sourceLineNo">319</span> this.buf = alloc.directBuffer(capacity);<a name="line.319"></a> +<span class="sourceLineNo">320</span> this.state = State.STREAMING;<a name="line.320"></a> +<span class="sourceLineNo">321</span> setupReceiver(conf.getInt(DFS_CLIENT_SOCKET_TIMEOUT_KEY, READ_TIMEOUT));<a name="line.321"></a> +<span class="sourceLineNo">322</span> }<a name="line.322"></a> +<span class="sourceLineNo">323</span><a name="line.323"></a> +<span class="sourceLineNo">324</span> private void writeInt0(int i) {<a name="line.324"></a> +<span class="sourceLineNo">325</span> buf.ensureWritable(4);<a name="line.325"></a> +<span class="sourceLineNo">326</span> buf.writeInt(i);<a name="line.326"></a> +<span class="sourceLineNo">327</span> }<a name="line.327"></a> +<span class="sourceLineNo">328</span><a name="line.328"></a> +<span class="sourceLineNo">329</span> @Override<a name="line.329"></a> +<span class="sourceLineNo">330</span> public void writeInt(int i) {<a name="line.330"></a> +<span class="sourceLineNo">331</span> if (eventLoop.inEventLoop()) {<a name="line.331"></a> +<span class="sourceLineNo">332</span> writeInt0(i);<a name="line.332"></a> +<span class="sourceLineNo">333</span> } else {<a name="line.333"></a> +<span class="sourceLineNo">334</span> eventLoop.submit(() -> writeInt0(i));<a name="line.334"></a> +<span class="sourceLineNo">335</span> }<a name="line.335"></a> +<span class="sourceLineNo">336</span> }<a name="line.336"></a> +<span class="sourceLineNo">337</span><a name="line.337"></a> +<span class="sourceLineNo">338</span> private void write0(ByteBuffer bb) {<a name="line.338"></a> +<span class="sourceLineNo">339</span> buf.ensureWritable(bb.remaining());<a name="line.339"></a> +<span class="sourceLineNo">340</span> buf.writeBytes(bb);<a name="line.340"></a> +<span class="sourceLineNo">341</span> }<a name="line.341"></a> +<span class="sourceLineNo">342</span><a name="line.342"></a> +<span class="sourceLineNo">343</span> @Override<a name="line.343"></a> +<span class="sourceLineNo">344</span> public void write(ByteBuffer bb) {<a name="line.344"></a> +<span class="sourceLineNo">345</span> if (eventLoop.inEventLoop()) {<a name="line.345"></a> +<span class="sourceLineNo">346</span> write0(bb);<a name="line.346"></a> +<span class="sourceLineNo">347</span> } else {<a name="line.347"></a> +<span class="sourceLineNo">348</span> eventLoop.submit(() -> write0(bb));<a name="line.348"></a> +<span class="sourceLineNo">349</span> }<a name="line.349"></a> +<span class="sourceLineNo">350</span> }<a name="line.350"></a> +<span class="sourceLineNo">351</span><a name="line.351"></a> +<span class="sourceLineNo">352</span> @Override<a name="line.352"></a> +<span class="sourceLineNo">353</span> public void write(byte[] b) {<a name="line.353"></a> +<span class="sourceLineNo">354</span> write(b, 0, b.length);<a name="line.354"></a> +<span class="sourceLineNo">355</span> }<a name="line.355"></a> +<span class="sourceLineNo">356</span><a name="line.356"></a> +<span class="sourceLineNo">357</span> private void write0(byte[] b, int off, int len) {<a name="line.357"></a> +<span class="sourceLineNo">358</span> buf.ensureWritable(len);<a name="line.358"></a> +<span class="sourceLineNo">359</span> buf.writeBytes(b, off, len);<a name="line.359"></a> +<span class="sourceLineNo">360</span> }<a name="line.360"></a> +<span class="sourceLineNo">361</span><a name="line.361"></a> +<span class="sourceLineNo">362</span> @Override<a name="line.362"></a> +<span class="sourceLineNo">363</span> public void write(byte[] b, int off, int len) {<a name="line.363"></a> +<span class="sourceLineNo">364</span> if (eventLoop.inEventLoop()) {<a name="line.364"></a> +<span class="sourceLineNo">365</span> write0(b, off, len);<a name="line.365"></a> +<span class="sourceLineNo">366</span> } else {<a name="line.366"></a> +<span class="sourceLineNo">367</span> eventLoop.submit(() -> write0(b, off, len)).syncUninterruptibly();<a name="line.367"></a> +<span class="sourceLineNo">368</span> }<a name="line.368"></a> +<span class="sourceLineNo">369</span> }<a name="line.369"></a> +<span class="sourceLineNo">370</span><a name="line.370"></a> +<span class="sourceLineNo">371</span> @Override<a name="line.371"></a> +<span class="sourceLineNo">372</span> public int buffered() {<a name="line.372"></a> +<span class="sourceLineNo">373</span> if (eventLoop.inEventLoop()) {<a name="line.373"></a> +<span class="sourceLineNo">374</span> return buf.readableBytes();<a name="line.374"></a> +<span class="sourceLineNo">375</span> } else {<a name="line.375"></a> +<span class="sourceLineNo">376</span> return eventLoop.submit(() -> buf.readableBytes()).syncUninterruptibly().getNow().intValue();<a name="line.376"></a> +<span 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name="line.388"></a> +<span class="sourceLineNo">389</span> int trailingPartialChunkLen = dataLen % chunkLen;<a name="line.389"></a> +<span class="sourceLineNo">390</span> int numChecks = dataLen / chunkLen + (trailingPartialChunkLen != 0 ? 1 : 0);<a name="line.390"></a> +<span class="sourceLineNo">391</span> int checksumLen = numChecks * summer.getChecksumSize();<a name="line.391"></a> +<span class="sourceLineNo">392</span> ByteBuf checksumBuf = alloc.directBuffer(checksumLen);<a name="line.392"></a> +<span class="sourceLineNo">393</span> summer.calculateChunkedSums(dataBuf.nioBuffer(), checksumBuf.nioBuffer(0, checksumLen));<a name="line.393"></a> +<span class="sourceLineNo">394</span> checksumBuf.writerIndex(checksumLen);<
<TRUNCATED>
