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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.regionserver;<a name="line.18"></a> |
| <span class="sourceLineNo">019</span><a name="line.19"></a> |
| <span class="sourceLineNo">020</span>import java.io.IOException;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import java.util.ArrayList;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import java.util.Arrays;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import java.util.Collection;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import java.util.Collections;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import java.util.List;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span><a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import org.apache.hadoop.hbase.Cell;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import org.apache.hadoop.hbase.CellComparator;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import org.apache.hadoop.hbase.CellUtil;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import org.apache.hadoop.hbase.PrivateCellUtil;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import org.slf4j.Logger;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import org.slf4j.LoggerFactory;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span><a name="line.35"></a> |
| <span class="sourceLineNo">036</span>/**<a name="line.36"></a> |
| <span class="sourceLineNo">037</span> * Base class for cell sink that separates the provided cells into multiple files for stripe<a name="line.37"></a> |
| <span class="sourceLineNo">038</span> * compaction.<a name="line.38"></a> |
| <span class="sourceLineNo">039</span> */<a name="line.39"></a> |
| <span class="sourceLineNo">040</span>@InterfaceAudience.Private<a name="line.40"></a> |
| <span class="sourceLineNo">041</span>public abstract class StripeMultiFileWriter extends AbstractMultiFileWriter {<a name="line.41"></a> |
| <span class="sourceLineNo">042</span><a name="line.42"></a> |
| <span class="sourceLineNo">043</span> private static final Logger LOG = LoggerFactory.getLogger(StripeMultiFileWriter.class);<a name="line.43"></a> |
| <span class="sourceLineNo">044</span><a name="line.44"></a> |
| <span class="sourceLineNo">045</span> protected final CellComparator comparator;<a name="line.45"></a> |
| <span class="sourceLineNo">046</span> protected List<StoreFileWriter> existingWriters;<a name="line.46"></a> |
| <span class="sourceLineNo">047</span> protected List<byte[]> boundaries;<a name="line.47"></a> |
| <span class="sourceLineNo">048</span><a name="line.48"></a> |
| <span class="sourceLineNo">049</span> /** Whether to write stripe metadata */<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> private boolean doWriteStripeMetadata = true;<a name="line.50"></a> |
| <span class="sourceLineNo">051</span><a name="line.51"></a> |
| <span class="sourceLineNo">052</span> public StripeMultiFileWriter(CellComparator comparator) {<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> this.comparator = comparator;<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> }<a name="line.54"></a> |
| <span class="sourceLineNo">055</span><a name="line.55"></a> |
| <span class="sourceLineNo">056</span> public void setNoStripeMetadata() {<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> this.doWriteStripeMetadata = false;<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> }<a name="line.58"></a> |
| <span class="sourceLineNo">059</span><a name="line.59"></a> |
| <span class="sourceLineNo">060</span> @Override<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> protected Collection<StoreFileWriter> writers() {<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> return existingWriters;<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> }<a name="line.63"></a> |
| <span class="sourceLineNo">064</span><a name="line.64"></a> |
| <span class="sourceLineNo">065</span> protected abstract void preCommitWritersInternal() throws IOException;<a name="line.65"></a> |
| <span class="sourceLineNo">066</span><a name="line.66"></a> |
| <span class="sourceLineNo">067</span> @Override<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> protected final void preCommitWriters() throws IOException {<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> // do some sanity check here.<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> assert this.existingWriters != null;<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> preCommitWritersInternal();<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> assert this.boundaries.size() == (this.existingWriters.size() + 1);<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> }<a name="line.73"></a> |
| <span class="sourceLineNo">074</span><a name="line.74"></a> |
| <span class="sourceLineNo">075</span> @Override<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> protected void preCloseWriter(StoreFileWriter writer) throws IOException {<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> if (doWriteStripeMetadata) {<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> if (LOG.isDebugEnabled()) {<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> LOG.debug("Write stripe metadata for " + writer.getPath().toString());<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> }<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> int index = existingWriters.indexOf(writer);<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> writer.appendFileInfo(StripeStoreFileManager.STRIPE_START_KEY, boundaries.get(index));<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> writer.appendFileInfo(StripeStoreFileManager.STRIPE_END_KEY, boundaries.get(index + 1));<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> } else {<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> if (LOG.isDebugEnabled()) {<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> LOG.debug("Skip writing stripe metadata for " + writer.getPath().toString());<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> }<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> }<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> }<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> * Subclasses can call this method to make sure the first KV is within multi-writer range.<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> * @param left The left boundary of the writer.<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> * @param cell The cell whose row has to be checked.<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> */<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> protected void sanityCheckLeft(byte[] left, Cell cell) throws IOException {<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> if (!Arrays.equals(StripeStoreFileManager.OPEN_KEY, left)<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> && comparator.compareRows(cell, left, 0, left.length) < 0) {<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> String error =<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> "The first row is lower than the left boundary of [" + Bytes.toString(left) + "]: ["<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> + Bytes.toString(cell.getRowArray(), cell.getRowOffset(), cell.getRowLength()) + "]";<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> LOG.error(error);<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> throw new IOException(error);<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><a name="line.106"></a> |
| <span class="sourceLineNo">107</span> /**<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> * Subclasses can call this method to make sure the last KV is within multi-writer range.<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> * @param right The right boundary of the writer.<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> */<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> protected void sanityCheckRight(byte[] right, Cell cell) throws IOException {<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> if (!Arrays.equals(StripeStoreFileManager.OPEN_KEY, right)<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> && comparator.compareRows(cell, right, 0, right.length) >= 0) {<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> String error =<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> "The last row is higher or equal than the right boundary of [" + Bytes.toString(right)<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> + "]: ["<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> + Bytes.toString(cell.getRowArray(), cell.getRowOffset(), cell.getRowLength()) + "]";<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> LOG.error(error);<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> throw new IOException(error);<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> }<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> * MultiWriter that separates the cells based on fixed row-key boundaries. All the KVs between<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> * each pair of neighboring boundaries from the list supplied to ctor will end up in one file, and<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> * separate from all other such pairs.<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> */<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> public static class BoundaryMultiWriter extends StripeMultiFileWriter {<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> private StoreFileWriter currentWriter;<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> private byte[] currentWriterEndKey;<a name="line.130"></a> |
| <span class="sourceLineNo">131</span><a name="line.131"></a> |
| <span class="sourceLineNo">132</span> private Cell lastCell;<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> private long cellsInCurrentWriter = 0;<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> private int majorRangeFromIndex = -1, majorRangeToIndex = -1;<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> private boolean hasAnyWriter = false;<a name="line.135"></a> |
| <span class="sourceLineNo">136</span><a name="line.136"></a> |
| <span class="sourceLineNo">137</span> /**<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> * @param targetBoundaries The boundaries on which writers/files are separated.<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> * @param majorRangeFrom Major range is the range for which at least one file should be written<a name="line.139"></a> |
| <span class="sourceLineNo">140</span> * (because all files are included in compaction). majorRangeFrom is the left boundary.<a name="line.140"></a> |
| <span class="sourceLineNo">141</span> * @param majorRangeTo The right boundary of majorRange (see majorRangeFrom).<a name="line.141"></a> |
| <span class="sourceLineNo">142</span> */<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> public BoundaryMultiWriter(CellComparator comparator, List<byte[]> targetBoundaries,<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> byte[] majorRangeFrom, byte[] majorRangeTo) throws IOException {<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> super(comparator);<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> this.boundaries = targetBoundaries;<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> this.existingWriters = new ArrayList<>(this.boundaries.size() - 1);<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> // "major" range (range for which all files are included) boundaries, if any,<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> // must match some target boundaries, let's find them.<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> assert (majorRangeFrom == null) == (majorRangeTo == null);<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> if (majorRangeFrom != null) {<a name="line.151"></a> |
| <span class="sourceLineNo">152</span> majorRangeFromIndex =<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> Arrays.equals(majorRangeFrom, StripeStoreFileManager.OPEN_KEY) ? 0 : Collections<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> .binarySearch(boundaries, majorRangeFrom, Bytes.BYTES_COMPARATOR);<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> majorRangeToIndex =<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> Arrays.equals(majorRangeTo, StripeStoreFileManager.OPEN_KEY) ? boundaries.size()<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> : Collections.binarySearch(boundaries, majorRangeTo, Bytes.BYTES_COMPARATOR);<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> if (this.majorRangeFromIndex < 0 || this.majorRangeToIndex < 0) {<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> throw new IOException("Major range does not match writer boundaries: ["<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> + Bytes.toString(majorRangeFrom) + "] [" + Bytes.toString(majorRangeTo) + "]; from "<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> + majorRangeFromIndex + " to " + majorRangeToIndex);<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> }<a name="line.162"></a> |
| <span class="sourceLineNo">163</span> }<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> }<a name="line.164"></a> |
| <span class="sourceLineNo">165</span><a name="line.165"></a> |
| <span class="sourceLineNo">166</span> @Override<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> public void append(Cell cell) throws IOException {<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> if (currentWriter == null && existingWriters.isEmpty()) {<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> // First append ever, do a sanity check.<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> sanityCheckLeft(this.boundaries.get(0), cell);<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> }<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> prepareWriterFor(cell);<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> currentWriter.append(cell);<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> lastCell = cell; // for the sanity check<a name="line.174"></a> |
| <span class="sourceLineNo">175</span> ++cellsInCurrentWriter;<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> }<a name="line.176"></a> |
| <span class="sourceLineNo">177</span><a name="line.177"></a> |
| <span class="sourceLineNo">178</span> private boolean isCellAfterCurrentWriter(Cell cell) {<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> return !Arrays.equals(currentWriterEndKey, StripeStoreFileManager.OPEN_KEY)<a name="line.179"></a> |
| <span class="sourceLineNo">180</span> && (comparator.compareRows(cell, currentWriterEndKey, 0, currentWriterEndKey.length) >= 0);<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> }<a name="line.181"></a> |
| <span class="sourceLineNo">182</span><a name="line.182"></a> |
| <span class="sourceLineNo">183</span> @Override<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> protected void preCommitWritersInternal() throws IOException {<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> stopUsingCurrentWriter();<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> while (existingWriters.size() < boundaries.size() - 1) {<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> createEmptyWriter();<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> }<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> if (lastCell != null) {<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> sanityCheckRight(boundaries.get(boundaries.size() - 1), lastCell);<a name="line.190"></a> |
| <span class="sourceLineNo">191</span> }<a name="line.191"></a> |
| <span class="sourceLineNo">192</span> }<a name="line.192"></a> |
| <span class="sourceLineNo">193</span><a name="line.193"></a> |
| <span class="sourceLineNo">194</span> private void prepareWriterFor(Cell cell) throws IOException {<a name="line.194"></a> |
| <span class="sourceLineNo">195</span> if (currentWriter != null && !isCellAfterCurrentWriter(cell)) return; // Use same writer.<a name="line.195"></a> |
| <span class="sourceLineNo">196</span><a name="line.196"></a> |
| <span class="sourceLineNo">197</span> stopUsingCurrentWriter();<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> // See if KV will be past the writer we are about to create; need to add another one.<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> while (isCellAfterCurrentWriter(cell)) {<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> checkCanCreateWriter();<a name="line.200"></a> |
| <span class="sourceLineNo">201</span> createEmptyWriter();<a name="line.201"></a> |
| <span class="sourceLineNo">202</span> }<a name="line.202"></a> |
| <span class="sourceLineNo">203</span> checkCanCreateWriter();<a name="line.203"></a> |
| <span class="sourceLineNo">204</span> hasAnyWriter = true;<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> currentWriter = writerFactory.createWriter();<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> existingWriters.add(currentWriter);<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> * Called if there are no cells for some stripe. We need to have something in the writer list<a name="line.210"></a> |
| <span class="sourceLineNo">211</span> * for this stripe, so that writer-boundary list indices correspond to each other. We can insert<a name="line.211"></a> |
| <span class="sourceLineNo">212</span> * null in the writer list for that purpose, except in the following cases where we actually<a name="line.212"></a> |
| <span class="sourceLineNo">213</span> * need a file: 1) If we are in range for which we are compacting all the files, we need to<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> * create an empty file to preserve stripe metadata. 2) If we have not produced any file at all<a name="line.214"></a> |
| <span class="sourceLineNo">215</span> * for this compactions, and this is the last chance (the last stripe), we need to preserve last<a name="line.215"></a> |
| <span class="sourceLineNo">216</span> * seqNum (see also HBASE-6059).<a name="line.216"></a> |
| <span class="sourceLineNo">217</span> */<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> private void createEmptyWriter() throws IOException {<a name="line.218"></a> |
| <span class="sourceLineNo">219</span> int index = existingWriters.size();<a name="line.219"></a> |
| <span class="sourceLineNo">220</span> boolean isInMajorRange = (index >= majorRangeFromIndex) && (index < majorRangeToIndex);<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> // Stripe boundary count = stripe count + 1, so last stripe index is (#boundaries minus 2)<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> boolean isLastWriter = !hasAnyWriter && (index == (boundaries.size() - 2));<a name="line.222"></a> |
| <span class="sourceLineNo">223</span> boolean needEmptyFile = isInMajorRange || isLastWriter;<a name="line.223"></a> |
| <span class="sourceLineNo">224</span> existingWriters.add(needEmptyFile ? writerFactory.createWriter() : null);<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> hasAnyWriter |= needEmptyFile;<a name="line.225"></a> |
| <span class="sourceLineNo">226</span> currentWriterEndKey =<a name="line.226"></a> |
| <span class="sourceLineNo">227</span> (existingWriters.size() + 1 == boundaries.size()) ? null : boundaries.get(existingWriters<a name="line.227"></a> |
| <span class="sourceLineNo">228</span> .size() + 1);<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> }<a name="line.229"></a> |
| <span class="sourceLineNo">230</span><a name="line.230"></a> |
| <span class="sourceLineNo">231</span> private void checkCanCreateWriter() throws IOException {<a name="line.231"></a> |
| <span class="sourceLineNo">232</span> int maxWriterCount = boundaries.size() - 1;<a name="line.232"></a> |
| <span class="sourceLineNo">233</span> assert existingWriters.size() <= maxWriterCount;<a name="line.233"></a> |
| <span class="sourceLineNo">234</span> if (existingWriters.size() >= maxWriterCount) {<a name="line.234"></a> |
| <span class="sourceLineNo">235</span> throw new IOException("Cannot create any more writers (created " + existingWriters.size()<a name="line.235"></a> |
| <span class="sourceLineNo">236</span> + " out of " + maxWriterCount + " - row might be out of range of all valid writers");<a name="line.236"></a> |
| <span class="sourceLineNo">237</span> }<a name="line.237"></a> |
| <span class="sourceLineNo">238</span> }<a name="line.238"></a> |
| <span class="sourceLineNo">239</span><a name="line.239"></a> |
| <span class="sourceLineNo">240</span> private void stopUsingCurrentWriter() {<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> if (currentWriter != null) {<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> if (LOG.isDebugEnabled()) {<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> LOG.debug("Stopping to use a writer after [" + Bytes.toString(currentWriterEndKey)<a name="line.243"></a> |
| <span class="sourceLineNo">244</span> + "] row; wrote out " + cellsInCurrentWriter + " kvs");<a name="line.244"></a> |
| <span class="sourceLineNo">245</span> }<a name="line.245"></a> |
| <span class="sourceLineNo">246</span> cellsInCurrentWriter = 0;<a name="line.246"></a> |
| <span class="sourceLineNo">247</span> }<a name="line.247"></a> |
| <span class="sourceLineNo">248</span> currentWriter = null;<a name="line.248"></a> |
| <span class="sourceLineNo">249</span> currentWriterEndKey =<a name="line.249"></a> |
| <span class="sourceLineNo">250</span> (existingWriters.size() + 1 == boundaries.size()) ? null : boundaries.get(existingWriters<a name="line.250"></a> |
| <span class="sourceLineNo">251</span> .size() + 1);<a name="line.251"></a> |
| <span class="sourceLineNo">252</span> }<a name="line.252"></a> |
| <span class="sourceLineNo">253</span> }<a name="line.253"></a> |
| <span class="sourceLineNo">254</span><a name="line.254"></a> |
| <span class="sourceLineNo">255</span> /**<a name="line.255"></a> |
| <span class="sourceLineNo">256</span> * MultiWriter that separates the cells based on target cell number per file and file count. New<a name="line.256"></a> |
| <span class="sourceLineNo">257</span> * file is started every time the target number of KVs is reached, unless the fixed count of<a name="line.257"></a> |
| <span class="sourceLineNo">258</span> * writers has already been created (in that case all the remaining KVs go into the last writer).<a name="line.258"></a> |
| <span class="sourceLineNo">259</span> */<a name="line.259"></a> |
| <span class="sourceLineNo">260</span> public static class SizeMultiWriter extends StripeMultiFileWriter {<a name="line.260"></a> |
| <span class="sourceLineNo">261</span> private int targetCount;<a name="line.261"></a> |
| <span class="sourceLineNo">262</span> private long targetCells;<a name="line.262"></a> |
| <span class="sourceLineNo">263</span> private byte[] left;<a name="line.263"></a> |
| <span class="sourceLineNo">264</span> private byte[] right;<a name="line.264"></a> |
| <span class="sourceLineNo">265</span><a name="line.265"></a> |
| <span class="sourceLineNo">266</span> private Cell lastCell;<a name="line.266"></a> |
| <span class="sourceLineNo">267</span> private StoreFileWriter currentWriter;<a name="line.267"></a> |
| <span class="sourceLineNo">268</span> protected byte[] lastRowInCurrentWriter = null;<a name="line.268"></a> |
| <span class="sourceLineNo">269</span> private long cellsInCurrentWriter = 0;<a name="line.269"></a> |
| <span class="sourceLineNo">270</span> private long cellsSeen = 0;<a name="line.270"></a> |
| <span class="sourceLineNo">271</span> private long cellsSeenInPrevious = 0;<a name="line.271"></a> |
| <span class="sourceLineNo">272</span><a name="line.272"></a> |
| <span class="sourceLineNo">273</span> /**<a name="line.273"></a> |
| <span class="sourceLineNo">274</span> * @param targetCount The maximum count of writers that can be created.<a name="line.274"></a> |
| <span class="sourceLineNo">275</span> * @param targetKvs The number of KVs to read from source before starting each new writer.<a name="line.275"></a> |
| <span class="sourceLineNo">276</span> * @param left The left boundary of the first writer.<a name="line.276"></a> |
| <span class="sourceLineNo">277</span> * @param right The right boundary of the last writer.<a name="line.277"></a> |
| <span class="sourceLineNo">278</span> */<a name="line.278"></a> |
| <span class="sourceLineNo">279</span> public SizeMultiWriter(CellComparator comparator, int targetCount, long targetKvs, byte[] left,<a name="line.279"></a> |
| <span class="sourceLineNo">280</span> byte[] right) {<a name="line.280"></a> |
| <span class="sourceLineNo">281</span> super(comparator);<a name="line.281"></a> |
| <span class="sourceLineNo">282</span> this.targetCount = targetCount;<a name="line.282"></a> |
| <span class="sourceLineNo">283</span> this.targetCells = targetKvs;<a name="line.283"></a> |
| <span class="sourceLineNo">284</span> this.left = left;<a name="line.284"></a> |
| <span class="sourceLineNo">285</span> this.right = right;<a name="line.285"></a> |
| <span class="sourceLineNo">286</span> int preallocate = Math.min(this.targetCount, 64);<a name="line.286"></a> |
| <span class="sourceLineNo">287</span> this.existingWriters = new ArrayList<>(preallocate);<a name="line.287"></a> |
| <span class="sourceLineNo">288</span> this.boundaries = new ArrayList<>(preallocate + 1);<a name="line.288"></a> |
| <span class="sourceLineNo">289</span> }<a name="line.289"></a> |
| <span class="sourceLineNo">290</span><a name="line.290"></a> |
| <span class="sourceLineNo">291</span> @Override<a name="line.291"></a> |
| <span class="sourceLineNo">292</span> public void append(Cell cell) throws IOException {<a name="line.292"></a> |
| <span class="sourceLineNo">293</span> // If we are waiting for opportunity to close and we started writing different row,<a name="line.293"></a> |
| <span class="sourceLineNo">294</span> // discard the writer and stop waiting.<a name="line.294"></a> |
| <span class="sourceLineNo">295</span> boolean doCreateWriter = false;<a name="line.295"></a> |
| <span class="sourceLineNo">296</span> if (currentWriter == null) {<a name="line.296"></a> |
| <span class="sourceLineNo">297</span> // First append ever, do a sanity check.<a name="line.297"></a> |
| <span class="sourceLineNo">298</span> sanityCheckLeft(left, cell);<a name="line.298"></a> |
| <span class="sourceLineNo">299</span> doCreateWriter = true;<a name="line.299"></a> |
| <span class="sourceLineNo">300</span> } else if (lastRowInCurrentWriter != null<a name="line.300"></a> |
| <span class="sourceLineNo">301</span> && !PrivateCellUtil.matchingRows(cell, lastRowInCurrentWriter, 0,<a name="line.301"></a> |
| <span class="sourceLineNo">302</span> lastRowInCurrentWriter.length)) {<a name="line.302"></a> |
| <span class="sourceLineNo">303</span> if (LOG.isDebugEnabled()) {<a name="line.303"></a> |
| <span class="sourceLineNo">304</span> LOG.debug("Stopping to use a writer after [" + Bytes.toString(lastRowInCurrentWriter)<a name="line.304"></a> |
| <span class="sourceLineNo">305</span> + "] row; wrote out " + cellsInCurrentWriter + " kvs");<a name="line.305"></a> |
| <span class="sourceLineNo">306</span> }<a name="line.306"></a> |
| <span class="sourceLineNo">307</span> lastRowInCurrentWriter = null;<a name="line.307"></a> |
| <span class="sourceLineNo">308</span> cellsInCurrentWriter = 0;<a name="line.308"></a> |
| <span class="sourceLineNo">309</span> cellsSeenInPrevious += cellsSeen;<a name="line.309"></a> |
| <span class="sourceLineNo">310</span> doCreateWriter = true;<a name="line.310"></a> |
| <span class="sourceLineNo">311</span> }<a name="line.311"></a> |
| <span class="sourceLineNo">312</span> if (doCreateWriter) {<a name="line.312"></a> |
| <span class="sourceLineNo">313</span> // make a copy<a name="line.313"></a> |
| <span class="sourceLineNo">314</span> byte[] boundary = existingWriters.isEmpty() ? left : CellUtil.cloneRow(cell);<a name="line.314"></a> |
| <span class="sourceLineNo">315</span> if (LOG.isDebugEnabled()) {<a name="line.315"></a> |
| <span class="sourceLineNo">316</span> LOG.debug("Creating new writer starting at [" + Bytes.toString(boundary) + "]");<a name="line.316"></a> |
| <span class="sourceLineNo">317</span> }<a name="line.317"></a> |
| <span class="sourceLineNo">318</span> currentWriter = writerFactory.createWriter();<a name="line.318"></a> |
| <span class="sourceLineNo">319</span> boundaries.add(boundary);<a name="line.319"></a> |
| <span class="sourceLineNo">320</span> existingWriters.add(currentWriter);<a name="line.320"></a> |
| <span class="sourceLineNo">321</span> }<a name="line.321"></a> |
| <span class="sourceLineNo">322</span><a name="line.322"></a> |
| <span class="sourceLineNo">323</span> currentWriter.append(cell);<a name="line.323"></a> |
| <span class="sourceLineNo">324</span> lastCell = cell; // for the sanity check<a name="line.324"></a> |
| <span class="sourceLineNo">325</span> ++cellsInCurrentWriter;<a name="line.325"></a> |
| <span class="sourceLineNo">326</span> cellsSeen = cellsInCurrentWriter;<a name="line.326"></a> |
| <span class="sourceLineNo">327</span> if (this.sourceScanner != null) {<a name="line.327"></a> |
| <span class="sourceLineNo">328</span> cellsSeen =<a name="line.328"></a> |
| <span class="sourceLineNo">329</span> Math.max(cellsSeen, this.sourceScanner.getEstimatedNumberOfKvsScanned()<a name="line.329"></a> |
| <span class="sourceLineNo">330</span> - cellsSeenInPrevious);<a name="line.330"></a> |
| <span class="sourceLineNo">331</span> }<a name="line.331"></a> |
| <span class="sourceLineNo">332</span><a name="line.332"></a> |
| <span class="sourceLineNo">333</span> // If we are not already waiting for opportunity to close, start waiting if we can<a name="line.333"></a> |
| <span class="sourceLineNo">334</span> // create any more writers and if the current one is too big.<a name="line.334"></a> |
| <span class="sourceLineNo">335</span> if (lastRowInCurrentWriter == null && existingWriters.size() < targetCount<a name="line.335"></a> |
| <span class="sourceLineNo">336</span> && cellsSeen >= targetCells) {<a name="line.336"></a> |
| <span class="sourceLineNo">337</span> lastRowInCurrentWriter = CellUtil.cloneRow(cell); // make a copy<a name="line.337"></a> |
| <span class="sourceLineNo">338</span> if (LOG.isDebugEnabled()) {<a name="line.338"></a> |
| <span class="sourceLineNo">339</span> LOG.debug("Preparing to start a new writer after ["<a name="line.339"></a> |
| <span class="sourceLineNo">340</span> + Bytes.toString(lastRowInCurrentWriter) + "] row; observed " + cellsSeen<a name="line.340"></a> |
| <span class="sourceLineNo">341</span> + " kvs and wrote out " + cellsInCurrentWriter + " kvs");<a name="line.341"></a> |
| <span class="sourceLineNo">342</span> }<a name="line.342"></a> |
| <span class="sourceLineNo">343</span> }<a name="line.343"></a> |
| <span class="sourceLineNo">344</span> }<a name="line.344"></a> |
| <span class="sourceLineNo">345</span><a name="line.345"></a> |
| <span class="sourceLineNo">346</span> @Override<a name="line.346"></a> |
| <span class="sourceLineNo">347</span> protected void preCommitWritersInternal() throws IOException {<a name="line.347"></a> |
| <span class="sourceLineNo">348</span> if (LOG.isDebugEnabled()) {<a name="line.348"></a> |
| <span class="sourceLineNo">349</span> LOG.debug("Stopping with "<a name="line.349"></a> |
| <span class="sourceLineNo">350</span> + cellsInCurrentWriter<a name="line.350"></a> |
| <span class="sourceLineNo">351</span> + " kvs in last writer"<a name="line.351"></a> |
| <span class="sourceLineNo">352</span> + ((this.sourceScanner == null) ? "" : ("; observed estimated "<a name="line.352"></a> |
| <span class="sourceLineNo">353</span> + this.sourceScanner.getEstimatedNumberOfKvsScanned() + " KVs total")));<a name="line.353"></a> |
| <span class="sourceLineNo">354</span> }<a name="line.354"></a> |
| <span class="sourceLineNo">355</span> if (lastCell != null) {<a name="line.355"></a> |
| <span class="sourceLineNo">356</span> sanityCheckRight(right, lastCell);<a name="line.356"></a> |
| <span class="sourceLineNo">357</span> }<a name="line.357"></a> |
| <span class="sourceLineNo">358</span><a name="line.358"></a> |
| <span class="sourceLineNo">359</span> // When expired stripes were going to be merged into one, and if no writer was created during<a name="line.359"></a> |
| <span class="sourceLineNo">360</span> // the compaction, we need to create an empty file to preserve metadata.<a name="line.360"></a> |
| <span class="sourceLineNo">361</span> if (existingWriters.isEmpty() && 1 == targetCount) {<a name="line.361"></a> |
| <span class="sourceLineNo">362</span> if (LOG.isDebugEnabled()) {<a name="line.362"></a> |
| <span class="sourceLineNo">363</span> LOG.debug("Merge expired stripes into one, create an empty file to preserve metadata.");<a name="line.363"></a> |
| <span class="sourceLineNo">364</span> }<a name="line.364"></a> |
| <span class="sourceLineNo">365</span> boundaries.add(left);<a name="line.365"></a> |
| <span class="sourceLineNo">366</span> existingWriters.add(writerFactory.createWriter());<a name="line.366"></a> |
| <span class="sourceLineNo">367</span> }<a name="line.367"></a> |
| <span class="sourceLineNo">368</span><a name="line.368"></a> |
| <span class="sourceLineNo">369</span> this.boundaries.add(right);<a name="line.369"></a> |
| <span class="sourceLineNo">370</span> }<a name="line.370"></a> |
| <span class="sourceLineNo">371</span> }<a name="line.371"></a> |
| <span class="sourceLineNo">372</span>}<a name="line.372"></a> |
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| </pre> |
| </div> |
| </body> |
| </html> |
