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Posted to commits@hbase.apache.org by gi...@apache.org on 2018/05/15 14:50:24 UTC
[41/50] hbase-site git commit: Published site at
26babcf013de696b899d76a3c39434b794440d8d.
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/da4482ac/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/BlockCacheUtil.CachedBlocksByFile.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/BlockCacheUtil.CachedBlocksByFile.html b/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/BlockCacheUtil.CachedBlocksByFile.html
index f8ce32e..f118c08 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/BlockCacheUtil.CachedBlocksByFile.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/BlockCacheUtil.CachedBlocksByFile.html
@@ -41,273 +41,305 @@
<span class="sourceLineNo">033</span>import org.apache.hadoop.conf.Configuration;<a name="line.33"></a>
<span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.metrics.impl.FastLongHistogram;<a name="line.34"></a>
<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.35"></a>
-<span class="sourceLineNo">036</span><a name="line.36"></a>
-<span class="sourceLineNo">037</span>/**<a name="line.37"></a>
-<span class="sourceLineNo">038</span> * Utilty for aggregating counts in CachedBlocks and toString/toJSON CachedBlocks and BlockCaches.<a name="line.38"></a>
-<span class="sourceLineNo">039</span> * No attempt has been made at making this thread safe.<a name="line.39"></a>
-<span class="sourceLineNo">040</span> */<a name="line.40"></a>
-<span class="sourceLineNo">041</span>@InterfaceAudience.Private<a name="line.41"></a>
-<span class="sourceLineNo">042</span>public class BlockCacheUtil {<a name="line.42"></a>
-<span class="sourceLineNo">043</span><a name="line.43"></a>
-<span class="sourceLineNo">044</span><a name="line.44"></a>
-<span class="sourceLineNo">045</span> public static final long NANOS_PER_SECOND = 1000000000;<a name="line.45"></a>
-<span class="sourceLineNo">046</span><a name="line.46"></a>
-<span class="sourceLineNo">047</span> /**<a name="line.47"></a>
-<span class="sourceLineNo">048</span> * Needed generating JSON.<a name="line.48"></a>
-<span class="sourceLineNo">049</span> */<a name="line.49"></a>
-<span class="sourceLineNo">050</span> private static final ObjectMapper MAPPER = new ObjectMapper();<a name="line.50"></a>
-<span class="sourceLineNo">051</span> static {<a name="line.51"></a>
-<span class="sourceLineNo">052</span> MAPPER.configure(SerializationFeature.FAIL_ON_EMPTY_BEANS, false);<a name="line.52"></a>
-<span class="sourceLineNo">053</span> MAPPER.configure(SerializationFeature.FLUSH_AFTER_WRITE_VALUE, true);<a name="line.53"></a>
-<span class="sourceLineNo">054</span> MAPPER.configure(SerializationFeature.INDENT_OUTPUT, true);<a name="line.54"></a>
-<span class="sourceLineNo">055</span> }<a name="line.55"></a>
-<span class="sourceLineNo">056</span><a name="line.56"></a>
-<span class="sourceLineNo">057</span> /**<a name="line.57"></a>
-<span class="sourceLineNo">058</span> * @param cb<a name="line.58"></a>
-<span class="sourceLineNo">059</span> * @return The block content as String.<a name="line.59"></a>
-<span class="sourceLineNo">060</span> */<a name="line.60"></a>
-<span class="sourceLineNo">061</span> public static String toString(final CachedBlock cb, final long now) {<a name="line.61"></a>
-<span class="sourceLineNo">062</span> return "filename=" + cb.getFilename() + ", " + toStringMinusFileName(cb, now);<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> /**<a name="line.65"></a>
-<span class="sourceLineNo">066</span> * Little data structure to hold counts for a file.<a name="line.66"></a>
-<span class="sourceLineNo">067</span> * Used doing a toJSON.<a name="line.67"></a>
-<span class="sourceLineNo">068</span> */<a name="line.68"></a>
-<span class="sourceLineNo">069</span> static class CachedBlockCountsPerFile {<a name="line.69"></a>
-<span class="sourceLineNo">070</span> private int count = 0;<a name="line.70"></a>
-<span class="sourceLineNo">071</span> private long size = 0;<a name="line.71"></a>
-<span class="sourceLineNo">072</span> private int countData = 0;<a name="line.72"></a>
-<span class="sourceLineNo">073</span> private long sizeData = 0;<a name="line.73"></a>
-<span class="sourceLineNo">074</span> private final String filename;<a name="line.74"></a>
-<span class="sourceLineNo">075</span><a name="line.75"></a>
-<span class="sourceLineNo">076</span> CachedBlockCountsPerFile(final String filename) {<a name="line.76"></a>
-<span class="sourceLineNo">077</span> this.filename = filename;<a name="line.77"></a>
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-<span class="sourceLineNo">079</span><a name="line.79"></a>
-<span class="sourceLineNo">080</span> public int getCount() {<a name="line.80"></a>
-<span class="sourceLineNo">081</span> return count;<a name="line.81"></a>
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-<span class="sourceLineNo">083</span><a name="line.83"></a>
-<span class="sourceLineNo">084</span> public long getSize() {<a name="line.84"></a>
-<span class="sourceLineNo">085</span> return size;<a name="line.85"></a>
-<span class="sourceLineNo">086</span> }<a name="line.86"></a>
-<span class="sourceLineNo">087</span><a name="line.87"></a>
-<span class="sourceLineNo">088</span> public int getCountData() {<a name="line.88"></a>
-<span class="sourceLineNo">089</span> return countData;<a name="line.89"></a>
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-<span class="sourceLineNo">093</span> return sizeData;<a name="line.93"></a>
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-<span class="sourceLineNo">095</span><a name="line.95"></a>
-<span class="sourceLineNo">096</span> public String getFilename() {<a name="line.96"></a>
-<span class="sourceLineNo">097</span> return filename;<a name="line.97"></a>
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-<span class="sourceLineNo">101</span> /**<a name="line.101"></a>
-<span class="sourceLineNo">102</span> * @param filename<a name="line.102"></a>
-<span class="sourceLineNo">103</span> * @param blocks<a name="line.103"></a>
-<span class="sourceLineNo">104</span> * @return A JSON String of <code>filename</code> and counts of <code>blocks</code><a name="line.104"></a>
-<span class="sourceLineNo">105</span> * @throws JsonGenerationException<a name="line.105"></a>
-<span class="sourceLineNo">106</span> * @throws JsonMappingException<a name="line.106"></a>
-<span class="sourceLineNo">107</span> * @throws IOException<a name="line.107"></a>
-<span class="sourceLineNo">108</span> */<a name="line.108"></a>
-<span class="sourceLineNo">109</span> public static String toJSON(final String filename, final NavigableSet<CachedBlock> blocks)<a name="line.109"></a>
-<span class="sourceLineNo">110</span> throws JsonGenerationException, JsonMappingException, IOException {<a name="line.110"></a>
-<span class="sourceLineNo">111</span> CachedBlockCountsPerFile counts = new CachedBlockCountsPerFile(filename);<a name="line.111"></a>
-<span class="sourceLineNo">112</span> for (CachedBlock cb: blocks) {<a name="line.112"></a>
-<span class="sourceLineNo">113</span> counts.count++;<a name="line.113"></a>
-<span class="sourceLineNo">114</span> counts.size += cb.getSize();<a name="line.114"></a>
-<span class="sourceLineNo">115</span> BlockType bt = cb.getBlockType();<a name="line.115"></a>
-<span class="sourceLineNo">116</span> if (bt != null && bt.isData()) {<a name="line.116"></a>
-<span class="sourceLineNo">117</span> counts.countData++;<a name="line.117"></a>
-<span class="sourceLineNo">118</span> counts.sizeData += cb.getSize();<a name="line.118"></a>
-<span class="sourceLineNo">119</span> }<a name="line.119"></a>
-<span class="sourceLineNo">120</span> }<a name="line.120"></a>
-<span class="sourceLineNo">121</span> return MAPPER.writeValueAsString(counts);<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> /**<a name="line.124"></a>
-<span class="sourceLineNo">125</span> * @param cbsbf<a name="line.125"></a>
-<span class="sourceLineNo">126</span> * @return JSON string of <code>cbsf</code> aggregated<a name="line.126"></a>
-<span class="sourceLineNo">127</span> * @throws JsonGenerationException<a name="line.127"></a>
-<span class="sourceLineNo">128</span> * @throws JsonMappingException<a name="line.128"></a>
-<span class="sourceLineNo">129</span> * @throws IOException<a name="line.129"></a>
-<span class="sourceLineNo">130</span> */<a name="line.130"></a>
-<span class="sourceLineNo">131</span> public static String toJSON(final CachedBlocksByFile cbsbf)<a name="line.131"></a>
-<span class="sourceLineNo">132</span> throws JsonGenerationException, JsonMappingException, IOException {<a name="line.132"></a>
-<span class="sourceLineNo">133</span> return MAPPER.writeValueAsString(cbsbf);<a name="line.133"></a>
-<span class="sourceLineNo">134</span> }<a name="line.134"></a>
-<span class="sourceLineNo">135</span><a name="line.135"></a>
-<span class="sourceLineNo">136</span> /**<a name="line.136"></a>
-<span class="sourceLineNo">137</span> * @param bc<a name="line.137"></a>
-<span class="sourceLineNo">138</span> * @return JSON string of <code>bc</code> content.<a name="line.138"></a>
-<span class="sourceLineNo">139</span> * @throws JsonGenerationException<a name="line.139"></a>
-<span class="sourceLineNo">140</span> * @throws JsonMappingException<a name="line.140"></a>
-<span class="sourceLineNo">141</span> * @throws IOException<a name="line.141"></a>
-<span class="sourceLineNo">142</span> */<a name="line.142"></a>
-<span class="sourceLineNo">143</span> public static String toJSON(final BlockCache bc)<a name="line.143"></a>
-<span class="sourceLineNo">144</span> throws JsonGenerationException, JsonMappingException, IOException {<a name="line.144"></a>
-<span class="sourceLineNo">145</span> return MAPPER.writeValueAsString(bc);<a name="line.145"></a>
-<span class="sourceLineNo">146</span> }<a name="line.146"></a>
-<span class="sourceLineNo">147</span><a name="line.147"></a>
-<span class="sourceLineNo">148</span> /**<a name="line.148"></a>
-<span class="sourceLineNo">149</span> * @param cb<a name="line.149"></a>
-<span class="sourceLineNo">150</span> * @return The block content of <code>bc</code> as a String minus the filename.<a name="line.150"></a>
-<span class="sourceLineNo">151</span> */<a name="line.151"></a>
-<span class="sourceLineNo">152</span> public static String toStringMinusFileName(final CachedBlock cb, final long now) {<a name="line.152"></a>
-<span class="sourceLineNo">153</span> return "offset=" + cb.getOffset() +<a name="line.153"></a>
-<span class="sourceLineNo">154</span> ", size=" + cb.getSize() +<a name="line.154"></a>
-<span class="sourceLineNo">155</span> ", age=" + (now - cb.getCachedTime()) +<a name="line.155"></a>
-<span class="sourceLineNo">156</span> ", type=" + cb.getBlockType() +<a name="line.156"></a>
-<span class="sourceLineNo">157</span> ", priority=" + cb.getBlockPriority();<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> * Get a {@link CachedBlocksByFile} instance and load it up by iterating content in<a name="line.161"></a>
-<span class="sourceLineNo">162</span> * {@link BlockCache}.<a name="line.162"></a>
-<span class="sourceLineNo">163</span> * @param conf Used to read configurations<a name="line.163"></a>
-<span class="sourceLineNo">164</span> * @param bc Block Cache to iterate.<a name="line.164"></a>
-<span class="sourceLineNo">165</span> * @return Laoded up instance of CachedBlocksByFile<a name="line.165"></a>
-<span class="sourceLineNo">166</span> */<a name="line.166"></a>
-<span class="sourceLineNo">167</span> public static CachedBlocksByFile getLoadedCachedBlocksByFile(final Configuration conf,<a name="line.167"></a>
-<span class="sourceLineNo">168</span> final BlockCache bc) {<a name="line.168"></a>
-<span class="sourceLineNo">169</span> CachedBlocksByFile cbsbf = new CachedBlocksByFile(conf);<a name="line.169"></a>
-<span class="sourceLineNo">170</span> for (CachedBlock cb: bc) {<a name="line.170"></a>
-<span class="sourceLineNo">171</span> if (cbsbf.update(cb)) break;<a name="line.171"></a>
-<span class="sourceLineNo">172</span> }<a name="line.172"></a>
-<span class="sourceLineNo">173</span> return cbsbf;<a name="line.173"></a>
-<span class="sourceLineNo">174</span> }<a name="line.174"></a>
-<span class="sourceLineNo">175</span><a name="line.175"></a>
-<span class="sourceLineNo">176</span> public static int compareCacheBlock(Cacheable left, Cacheable right) {<a name="line.176"></a>
-<span class="sourceLineNo">177</span> ByteBuffer l = ByteBuffer.allocate(left.getSerializedLength());<a name="line.177"></a>
-<span class="sourceLineNo">178</span> left.serialize(l);<a name="line.178"></a>
-<span class="sourceLineNo">179</span> ByteBuffer r = ByteBuffer.allocate(right.getSerializedLength());<a name="line.179"></a>
-<span class="sourceLineNo">180</span> right.serialize(r);<a name="line.180"></a>
-<span class="sourceLineNo">181</span> return Bytes.compareTo(l.array(), l.arrayOffset(), l.limit(),<a name="line.181"></a>
-<span class="sourceLineNo">182</span> r.array(), r.arrayOffset(), r.limit());<a name="line.182"></a>
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-<span class="sourceLineNo">184</span><a name="line.184"></a>
-<span class="sourceLineNo">185</span> /**<a name="line.185"></a>
-<span class="sourceLineNo">186</span> * Use one of these to keep a running account of cached blocks by file. Throw it away when done.<a name="line.186"></a>
-<span class="sourceLineNo">187</span> * This is different than metrics in that it is stats on current state of a cache.<a name="line.187"></a>
-<span class="sourceLineNo">188</span> * See getLoadedCachedBlocksByFile<a name="line.188"></a>
-<span class="sourceLineNo">189</span> */<a name="line.189"></a>
-<span class="sourceLineNo">190</span> @JsonIgnoreProperties({"cachedBlockStatsByFile"})<a name="line.190"></a>
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-<span class="sourceLineNo">193</span> private int dataBlockCount;<a name="line.193"></a>
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-<span class="sourceLineNo">197</span> /**<a name="line.197"></a>
-<span class="sourceLineNo">198</span> * How many blocks to look at before we give up.<a name="line.198"></a>
-<span class="sourceLineNo">199</span> * There could be many millions of blocks. We don't want the<a name="line.199"></a>
-<span class="sourceLineNo">200</span> * ui to freeze while we run through 1B blocks... users will<a name="line.200"></a>
-<span class="sourceLineNo">201</span> * think hbase dead. UI displays warning in red when stats<a name="line.201"></a>
-<span class="sourceLineNo">202</span> * are incomplete.<a name="line.202"></a>
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-<span class="sourceLineNo">204</span> private final int max;<a name="line.204"></a>
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-<span class="sourceLineNo">207</span> CachedBlocksByFile() {<a name="line.207"></a>
-<span class="sourceLineNo">208</span> this(null);<a name="line.208"></a>
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-<span class="sourceLineNo">211</span> CachedBlocksByFile(final Configuration c) {<a name="line.211"></a>
-<span class="sourceLineNo">212</span> this.max = c == null? DEFAULT_MAX: c.getInt("hbase.ui.blockcache.by.file.max", DEFAULT_MAX);<a name="line.212"></a>
+<span class="sourceLineNo">036</span>import org.slf4j.Logger;<a name="line.36"></a>
+<span class="sourceLineNo">037</span>import org.slf4j.LoggerFactory;<a name="line.37"></a>
+<span class="sourceLineNo">038</span><a name="line.38"></a>
+<span class="sourceLineNo">039</span>/**<a name="line.39"></a>
+<span class="sourceLineNo">040</span> * Utilty for aggregating counts in CachedBlocks and toString/toJSON CachedBlocks and BlockCaches.<a name="line.40"></a>
+<span class="sourceLineNo">041</span> * No attempt has been made at making this thread safe.<a name="line.41"></a>
+<span class="sourceLineNo">042</span> */<a name="line.42"></a>
+<span class="sourceLineNo">043</span>@InterfaceAudience.Private<a name="line.43"></a>
+<span class="sourceLineNo">044</span>public class BlockCacheUtil {<a name="line.44"></a>
+<span class="sourceLineNo">045</span><a name="line.45"></a>
+<span class="sourceLineNo">046</span> private static final Logger LOG = LoggerFactory.getLogger(BlockCacheUtil.class);<a name="line.46"></a>
+<span class="sourceLineNo">047</span><a name="line.47"></a>
+<span class="sourceLineNo">048</span> public static final long NANOS_PER_SECOND = 1000000000;<a name="line.48"></a>
+<span class="sourceLineNo">049</span><a name="line.49"></a>
+<span class="sourceLineNo">050</span> /**<a name="line.50"></a>
+<span class="sourceLineNo">051</span> * Needed generating JSON.<a name="line.51"></a>
+<span class="sourceLineNo">052</span> */<a name="line.52"></a>
+<span class="sourceLineNo">053</span> private static final ObjectMapper MAPPER = new ObjectMapper();<a name="line.53"></a>
+<span class="sourceLineNo">054</span> static {<a name="line.54"></a>
+<span class="sourceLineNo">055</span> MAPPER.configure(SerializationFeature.FAIL_ON_EMPTY_BEANS, false);<a name="line.55"></a>
+<span class="sourceLineNo">056</span> MAPPER.configure(SerializationFeature.FLUSH_AFTER_WRITE_VALUE, true);<a name="line.56"></a>
+<span class="sourceLineNo">057</span> MAPPER.configure(SerializationFeature.INDENT_OUTPUT, true);<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>
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+<span class="sourceLineNo">063</span> */<a name="line.63"></a>
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+<span class="sourceLineNo">065</span> return "filename=" + cb.getFilename() + ", " + toStringMinusFileName(cb, now);<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> /**<a name="line.68"></a>
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+<span class="sourceLineNo">070</span> * Used doing a toJSON.<a name="line.70"></a>
+<span class="sourceLineNo">071</span> */<a name="line.71"></a>
+<span class="sourceLineNo">072</span> static class CachedBlockCountsPerFile {<a name="line.72"></a>
+<span class="sourceLineNo">073</span> private int count = 0;<a name="line.73"></a>
+<span class="sourceLineNo">074</span> private long size = 0;<a name="line.74"></a>
+<span class="sourceLineNo">075</span> private int countData = 0;<a name="line.75"></a>
+<span class="sourceLineNo">076</span> private long sizeData = 0;<a name="line.76"></a>
+<span class="sourceLineNo">077</span> private final String filename;<a name="line.77"></a>
+<span class="sourceLineNo">078</span><a name="line.78"></a>
+<span class="sourceLineNo">079</span> CachedBlockCountsPerFile(final String filename) {<a name="line.79"></a>
+<span class="sourceLineNo">080</span> this.filename = filename;<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 int getCount() {<a name="line.83"></a>
+<span class="sourceLineNo">084</span> return count;<a name="line.84"></a>
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+<span class="sourceLineNo">088</span> return size;<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>
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+<span class="sourceLineNo">093</span> }<a name="line.93"></a>
+<span class="sourceLineNo">094</span><a name="line.94"></a>
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+<span class="sourceLineNo">096</span> return sizeData;<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> public String getFilename() {<a name="line.99"></a>
+<span class="sourceLineNo">100</span> return filename;<a name="line.100"></a>
+<span class="sourceLineNo">101</span> }<a name="line.101"></a>
+<span class="sourceLineNo">102</span> }<a name="line.102"></a>
+<span class="sourceLineNo">103</span><a name="line.103"></a>
+<span class="sourceLineNo">104</span> /**<a name="line.104"></a>
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