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Posted to commits@hbase.apache.org by mi...@apache.org on 2016/02/10 17:27:51 UTC
[41/51] [partial] hbase-site git commit: Published site at
df829ea7d1b4d2ef745e29d2b25b12966000eeb2.
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/40ef21e4/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/FixedFileTrailer.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/FixedFileTrailer.html b/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/FixedFileTrailer.html
index decb3cb..fa08a02 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/FixedFileTrailer.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/FixedFileTrailer.html
@@ -51,608 +51,607 @@
<span class="sourceLineNo">043</span> * trailer size is fixed within a given {@link HFile} format version only, but<a name="line.43"></a>
<span class="sourceLineNo">044</span> * we always store the version number as the last four-byte integer of the file.<a name="line.44"></a>
<span class="sourceLineNo">045</span> * The version number itself is split into two portions, a major <a name="line.45"></a>
-<span class="sourceLineNo">046</span> * version and a minor version. <a name="line.46"></a>
-<span class="sourceLineNo">047</span> * The last three bytes of a file is the major<a name="line.47"></a>
-<span class="sourceLineNo">048</span> * version and a single preceding byte is the minor number. The major version<a name="line.48"></a>
-<span class="sourceLineNo">049</span> * determines which readers/writers to use to read/write a hfile while a minor<a name="line.49"></a>
-<span class="sourceLineNo">050</span> * version determines smaller changes in hfile format that do not need a new<a name="line.50"></a>
-<span class="sourceLineNo">051</span> * reader/writer type.<a name="line.51"></a>
-<span class="sourceLineNo">052</span> */<a name="line.52"></a>
-<span class="sourceLineNo">053</span>@InterfaceAudience.Private<a name="line.53"></a>
-<span class="sourceLineNo">054</span>public class FixedFileTrailer {<a name="line.54"></a>
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-<span class="sourceLineNo">056</span> /**<a name="line.56"></a>
-<span class="sourceLineNo">057</span> * We store the comparator class name as a fixed-length field in the trailer.<a name="line.57"></a>
-<span class="sourceLineNo">058</span> */<a name="line.58"></a>
-<span class="sourceLineNo">059</span> private static final int MAX_COMPARATOR_NAME_LENGTH = 128;<a name="line.59"></a>
-<span class="sourceLineNo">060</span><a name="line.60"></a>
-<span class="sourceLineNo">061</span> /**<a name="line.61"></a>
-<span class="sourceLineNo">062</span> * Offset to the fileinfo data, a small block of vitals. Necessary in v1 but<a name="line.62"></a>
-<span class="sourceLineNo">063</span> * only potentially useful for pretty-printing in v2.<a name="line.63"></a>
-<span class="sourceLineNo">064</span> */<a name="line.64"></a>
-<span class="sourceLineNo">065</span> private long fileInfoOffset;<a name="line.65"></a>
-<span class="sourceLineNo">066</span><a name="line.66"></a>
-<span class="sourceLineNo">067</span> /**<a name="line.67"></a>
-<span class="sourceLineNo">068</span> * In version 1, the offset to the data block index. Starting from version 2,<a name="line.68"></a>
-<span class="sourceLineNo">069</span> * the meaning of this field is the offset to the section of the file that<a name="line.69"></a>
-<span class="sourceLineNo">070</span> * should be loaded at the time the file is being opened, and as of the time<a name="line.70"></a>
-<span class="sourceLineNo">071</span> * of writing, this happens to be the offset of the file info section.<a name="line.71"></a>
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-<span class="sourceLineNo">075</span> /** The number of entries in the root data index. */<a name="line.75"></a>
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-<span class="sourceLineNo">077</span><a name="line.77"></a>
-<span class="sourceLineNo">078</span> /** Total uncompressed size of all blocks of the data index */<a name="line.78"></a>
-<span class="sourceLineNo">079</span> private long uncompressedDataIndexSize;<a name="line.79"></a>
-<span class="sourceLineNo">080</span><a name="line.80"></a>
-<span class="sourceLineNo">081</span> /** The number of entries in the meta index */<a name="line.81"></a>
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-<span class="sourceLineNo">083</span><a name="line.83"></a>
-<span class="sourceLineNo">084</span> /** The total uncompressed size of keys/values stored in the file. */<a name="line.84"></a>
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-<span class="sourceLineNo">087</span> /**<a name="line.87"></a>
-<span class="sourceLineNo">088</span> * The number of key/value pairs in the file. This field was int in version 1,<a name="line.88"></a>
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-<span class="sourceLineNo">093</span> /** The compression codec used for all blocks. */<a name="line.93"></a>
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-<span class="sourceLineNo">096</span> /**<a name="line.96"></a>
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-<span class="sourceLineNo">101</span><a name="line.101"></a>
-<span class="sourceLineNo">102</span> /** The offset of the first data block. */<a name="line.102"></a>
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-<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> * It is guaranteed that no key/value data blocks start after this offset in<a name="line.106"></a>
-<span class="sourceLineNo">107</span> * the file.<a name="line.107"></a>
-<span class="sourceLineNo">108</span> */<a name="line.108"></a>
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-<span class="sourceLineNo">110</span><a name="line.110"></a>
-<span class="sourceLineNo">111</span> /** Raw key comparator class name in version 3 */<a name="line.111"></a>
-<span class="sourceLineNo">112</span> // We could write the actual class name from 2.0 onwards and handle BC<a name="line.112"></a>
-<span class="sourceLineNo">113</span> private String comparatorClassName = CellComparator.COMPARATOR.getClass().getName();<a name="line.113"></a>
-<span class="sourceLineNo">114</span><a name="line.114"></a>
-<span class="sourceLineNo">115</span> /** The encryption key */<a name="line.115"></a>
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-<span class="sourceLineNo">117</span><a name="line.117"></a>
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-<span class="sourceLineNo">119</span> private final int majorVersion;<a name="line.119"></a>
-<span class="sourceLineNo">120</span><a name="line.120"></a>
-<span class="sourceLineNo">121</span> /** The {@link HFile} format minor version. */<a name="line.121"></a>
-<span class="sourceLineNo">122</span> private final int minorVersion;<a name="line.122"></a>
-<span class="sourceLineNo">123</span><a name="line.123"></a>
-<span class="sourceLineNo">124</span> FixedFileTrailer(int majorVersion, int minorVersion) {<a name="line.124"></a>
-<span class="sourceLineNo">125</span> this.majorVersion = majorVersion;<a name="line.125"></a>
-<span class="sourceLineNo">126</span> this.minorVersion = minorVersion;<a name="line.126"></a>
-<span class="sourceLineNo">127</span> HFile.checkFormatVersion(majorVersion);<a name="line.127"></a>
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-<span class="sourceLineNo">130</span> private static int[] computeTrailerSizeByVersion() {<a name="line.130"></a>
-<span class="sourceLineNo">131</span> int versionToSize[] = new int[HFile.MAX_FORMAT_VERSION + 1];<a name="line.131"></a>
-<span class="sourceLineNo">132</span> // We support only 2 major versions now. ie. V2, V3<a name="line.132"></a>
-<span class="sourceLineNo">133</span> versionToSize[2] = 212;<a name="line.133"></a>
-<span class="sourceLineNo">134</span> for (int version = 3; version <= HFile.MAX_FORMAT_VERSION; version++) {<a name="line.134"></a>
-<span class="sourceLineNo">135</span> // Max FFT size for V3 and above is taken as 4KB for future enhancements<a name="line.135"></a>
-<span class="sourceLineNo">136</span> // if any.<a name="line.136"></a>
-<span class="sourceLineNo">137</span> // Unless the trailer size exceeds 4K this can continue<a name="line.137"></a>
-<span class="sourceLineNo">138</span> versionToSize[version] = 1024 * 4;<a name="line.138"></a>
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-<span class="sourceLineNo">140</span> return versionToSize;<a name="line.140"></a>
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-<span class="sourceLineNo">142</span><a name="line.142"></a>
-<span class="sourceLineNo">143</span> private static int getMaxTrailerSize() {<a name="line.143"></a>
-<span class="sourceLineNo">144</span> int maxSize = 0;<a name="line.144"></a>
-<span class="sourceLineNo">145</span> for (int version = HFile.MIN_FORMAT_VERSION;<a name="line.145"></a>
-<span class="sourceLineNo">146</span> version <= HFile.MAX_FORMAT_VERSION;<a name="line.146"></a>
-<span class="sourceLineNo">147</span> ++version)<a name="line.147"></a>
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-<span class="sourceLineNo">149</span> return maxSize;<a name="line.149"></a>
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-<span class="sourceLineNo">151</span><a name="line.151"></a>
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-<span class="sourceLineNo">165</span> /**<a name="line.165"></a>
-<span class="sourceLineNo">166</span> * Write the trailer to a data stream. We support writing version 1 for<a name="line.166"></a>
-<span class="sourceLineNo">167</span> * testing and for determining version 1 trailer size. It is also easy to see<a name="line.167"></a>
-<span class="sourceLineNo">168</span> * what fields changed in version 2.<a name="line.168"></a>
-<span class="sourceLineNo">169</span> *<a name="line.169"></a>
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-<span class="sourceLineNo">174</span> HFile.checkFormatVersion(majorVersion);<a name="line.174"></a>
-<span class="sourceLineNo">175</span><a name="line.175"></a>
-<span class="sourceLineNo">176</span> ByteArrayOutputStream baos = new ByteArrayOutputStream();<a name="line.176"></a>
-<span class="sourceLineNo">177</span> DataOutputStream baosDos = new DataOutputStream(baos);<a name="line.177"></a>
-<span class="sourceLineNo">178</span><a name="line.178"></a>
-<span class="sourceLineNo">179</span> BlockType.TRAILER.write(baosDos);<a name="line.179"></a>
-<span class="sourceLineNo">180</span> serializeAsPB(baosDos);<a name="line.180"></a>
-<span class="sourceLineNo">181</span><a name="line.181"></a>
-<span class="sourceLineNo">182</span> // The last 4 bytes of the file encode the major and minor version universally<a name="line.182"></a>
-<span class="sourceLineNo">183</span> baosDos.writeInt(materializeVersion(majorVersion, minorVersion));<a name="line.183"></a>
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-<span class="sourceLineNo">187</span><a name="line.187"></a>
-<span class="sourceLineNo">188</span> /**<a name="line.188"></a>
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-<span class="sourceLineNo">190</span> * @param outputStream<a name="line.190"></a>
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-<span class="sourceLineNo">194</span> ByteArrayOutputStream baos = new ByteArrayOutputStream();<a name="line.194"></a>
-<span class="sourceLineNo">195</span> HFileProtos.FileTrailerProto.Builder builder = HFileProtos.FileTrailerProto.newBuilder()<a name="line.195"></a>
-<span class="sourceLineNo">196</span> .setFileInfoOffset(fileInfoOffset)<a name="line.196"></a>
-<span class="sourceLineNo">197</span> .setLoadOnOpenDataOffset(loadOnOpenDataOffset)<a name="line.197"></a>
-<span class="sourceLineNo">198</span> .setUncompressedDataIndexSize(uncompressedDataIndexSize)<a name="line.198"></a>
-<span class="sourceLineNo">199</span> .setTotalUncompressedBytes(totalUncompressedBytes)<a name="line.199"></a>
-<span class="sourceLineNo">200</span> .setDataIndexCount(dataIndexCount)<a name="line.200"></a>
-<span class="sourceLineNo">201</span> .setMetaIndexCount(metaIndexCount)<a name="line.201"></a>
-<span class="sourceLineNo">202</span> .setEntryCount(entryCount)<a name="line.202"></a>
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-<span class="sourceLineNo">205</span> .setLastDataBlockOffset(lastDataBlockOffset)<a name="line.205"></a>
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-<span class="sourceLineNo">207</span> // some compat code here.<a name="line.207"></a>
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-<span class="sourceLineNo">211</span> builder.setEncryptionKey(ByteStringer.wrap(encryptionKey));<a name="line.211"></a>
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-<span class="sourceLineNo">214</span> // delimited output, see use of baos.size() below.<a name="line.214"></a>
-<span class="sourceLineNo">215</span> builder.build().writeDelimitedTo(baos);<a name="line.215"></a>
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-<span class="sourceLineNo">220</span> // in properly by HFile.<a name="line.220"></a>
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-<span class="sourceLineNo">258</span> * @param inputStream<a name="line.258"></a>
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<TRUNCATED>