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| <pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a> |
| <span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a> |
| <span class="sourceLineNo">003</span> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a> |
| <span class="sourceLineNo">004</span> * distributed with this work for additional information<a name="line.4"></a> |
| <span class="sourceLineNo">005</span> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a> |
| <span class="sourceLineNo">006</span> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a> |
| <span class="sourceLineNo">007</span> * "License"); you may not use this file except in compliance<a name="line.7"></a> |
| <span class="sourceLineNo">008</span> * with the License. You may obtain a copy of the License at<a name="line.8"></a> |
| <span class="sourceLineNo">009</span> *<a name="line.9"></a> |
| <span class="sourceLineNo">010</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a> |
| <span class="sourceLineNo">011</span> *<a name="line.11"></a> |
| <span class="sourceLineNo">012</span> * Unless required by applicable law or agreed to in writing, software<a name="line.12"></a> |
| <span class="sourceLineNo">013</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.13"></a> |
| <span class="sourceLineNo">014</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.14"></a> |
| <span class="sourceLineNo">015</span> * See the License for the specific language governing permissions and<a name="line.15"></a> |
| <span class="sourceLineNo">016</span> * limitations under the License.<a name="line.16"></a> |
| <span class="sourceLineNo">017</span> */<a name="line.17"></a> |
| <span class="sourceLineNo">018</span>package org.apache.hadoop.hbase.io.encoding;<a name="line.18"></a> |
| <span class="sourceLineNo">019</span><a name="line.19"></a> |
| <span class="sourceLineNo">020</span>import java.io.DataOutputStream;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import java.io.IOException;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import org.apache.hadoop.hbase.Cell;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import org.apache.hadoop.hbase.KeyValueUtil;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import org.apache.hadoop.hbase.io.ByteArrayOutputStream;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import org.slf4j.Logger;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import org.slf4j.LoggerFactory;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span><a name="line.29"></a> |
| <span class="sourceLineNo">030</span>@InterfaceAudience.Private<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>public class RowIndexEncoderV1 {<a name="line.31"></a> |
| <span class="sourceLineNo">032</span> private static final Logger LOG = LoggerFactory.getLogger(RowIndexEncoderV1.class);<a name="line.32"></a> |
| <span class="sourceLineNo">033</span><a name="line.33"></a> |
| <span class="sourceLineNo">034</span> /** The Cell previously appended. */<a name="line.34"></a> |
| <span class="sourceLineNo">035</span> private Cell lastCell = null;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span><a name="line.36"></a> |
| <span class="sourceLineNo">037</span> private DataOutputStream out;<a name="line.37"></a> |
| <span class="sourceLineNo">038</span> private NoneEncoder encoder;<a name="line.38"></a> |
| <span class="sourceLineNo">039</span> private int startOffset = -1;<a name="line.39"></a> |
| <span class="sourceLineNo">040</span> private ByteArrayOutputStream rowsOffsetBAOS = new ByteArrayOutputStream(64 * 4);<a name="line.40"></a> |
| <span class="sourceLineNo">041</span> private final HFileBlockEncodingContext context;<a name="line.41"></a> |
| <span class="sourceLineNo">042</span><a name="line.42"></a> |
| <span class="sourceLineNo">043</span> public RowIndexEncoderV1(DataOutputStream out, HFileBlockDefaultEncodingContext encodingCtx) {<a name="line.43"></a> |
| <span class="sourceLineNo">044</span> this.out = out;<a name="line.44"></a> |
| <span class="sourceLineNo">045</span> this.encoder = new NoneEncoder(out, encodingCtx);<a name="line.45"></a> |
| <span class="sourceLineNo">046</span> this.context = encodingCtx;<a name="line.46"></a> |
| <span class="sourceLineNo">047</span> }<a name="line.47"></a> |
| <span class="sourceLineNo">048</span><a name="line.48"></a> |
| <span class="sourceLineNo">049</span> public void write(Cell cell) throws IOException {<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> // checkRow uses comparator to check we are writing in order.<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> int extraBytesForRowIndex = 0;<a name="line.51"></a> |
| <span class="sourceLineNo">052</span><a name="line.52"></a> |
| <span class="sourceLineNo">053</span> if (!checkRow(cell)) {<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> if (startOffset < 0) {<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> startOffset = out.size();<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> }<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> rowsOffsetBAOS.writeInt(out.size() - startOffset);<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> // added for the int written in the previous line<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> extraBytesForRowIndex = Bytes.SIZEOF_INT;<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> }<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> lastCell = cell;<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> int size = encoder.write(cell);<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> context.getEncodingState().postCellEncode(size, size + extraBytesForRowIndex);<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> }<a name="line.64"></a> |
| <span class="sourceLineNo">065</span><a name="line.65"></a> |
| <span class="sourceLineNo">066</span> protected boolean checkRow(final Cell cell) throws IOException {<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> boolean isDuplicateRow = false;<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> if (cell == null) {<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> throw new IOException("Key cannot be null or empty");<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> }<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> if (lastCell != null) {<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> int keyComp = this.context.getHFileContext().getCellComparator().compareRows(lastCell, cell);<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> if (keyComp > 0) {<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> throw new IOException("Added a key not lexically larger than" + " previous. Current cell = "<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> + cell + ", lastCell = " + lastCell);<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> } else if (keyComp == 0) {<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> isDuplicateRow = true;<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> }<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> }<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> return isDuplicateRow;<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> public void flush() throws IOException {<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> int onDiskDataSize = 0;<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> if (startOffset >= 0) {<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> onDiskDataSize = out.size() - startOffset;<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> }<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> out.writeInt(rowsOffsetBAOS.size() / 4);<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> if (rowsOffsetBAOS.size() > 0) {<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> out.write(rowsOffsetBAOS.getBuffer(), 0, rowsOffsetBAOS.size());<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> }<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> out.writeInt(onDiskDataSize);<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> if (LOG.isTraceEnabled()) {<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> LOG.trace("RowNumber: " + rowsOffsetBAOS.size() / 4 + ", onDiskDataSize: " + onDiskDataSize<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> + ", totalOnDiskSize: " + (out.size() - startOffset));<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><a name="line.98"></a> |
| <span class="sourceLineNo">099</span> void beforeShipped() {<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> if (this.lastCell != null) {<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> this.lastCell = KeyValueUtil.toNewKeyCell(this.lastCell);<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> }<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> }<a name="line.103"></a> |
| <span class="sourceLineNo">104</span>}<a name="line.104"></a> |
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