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| <pre><span class="sourceLineNo">001</span>/**<a name="line.1"></a> |
| <span class="sourceLineNo">002</span> *<a name="line.2"></a> |
| <span class="sourceLineNo">003</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.3"></a> |
| <span class="sourceLineNo">004</span> * or more contributor license agreements. See the NOTICE file<a name="line.4"></a> |
| <span class="sourceLineNo">005</span> * distributed with this work for additional information<a name="line.5"></a> |
| <span class="sourceLineNo">006</span> * regarding copyright ownership. The ASF licenses this file<a name="line.6"></a> |
| <span class="sourceLineNo">007</span> * to you under the Apache License, Version 2.0 (the<a name="line.7"></a> |
| <span class="sourceLineNo">008</span> * "License"); you may not use this file except in compliance<a name="line.8"></a> |
| <span class="sourceLineNo">009</span> * with the License. You may obtain a copy of the License at<a name="line.9"></a> |
| <span class="sourceLineNo">010</span> *<a name="line.10"></a> |
| <span class="sourceLineNo">011</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.11"></a> |
| <span class="sourceLineNo">012</span> *<a name="line.12"></a> |
| <span class="sourceLineNo">013</span> * Unless required by applicable law or agreed to in writing, software<a name="line.13"></a> |
| <span class="sourceLineNo">014</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.14"></a> |
| <span class="sourceLineNo">015</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.15"></a> |
| <span class="sourceLineNo">016</span> * See the License for the specific language governing permissions and<a name="line.16"></a> |
| <span class="sourceLineNo">017</span> * limitations under the License.<a name="line.17"></a> |
| <span class="sourceLineNo">018</span> */<a name="line.18"></a> |
| <span class="sourceLineNo">019</span>package org.apache.hadoop.hbase.regionserver;<a name="line.19"></a> |
| <span class="sourceLineNo">020</span><a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import org.slf4j.Logger;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import org.slf4j.LoggerFactory;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import org.apache.hadoop.conf.Configuration;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import org.apache.hadoop.hbase.regionserver.compactions.CompactionConfiguration;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span><a name="line.26"></a> |
| <span class="sourceLineNo">027</span>/**<a name="line.27"></a> |
| <span class="sourceLineNo">028</span> * Configuration class for stripe store and compactions.<a name="line.28"></a> |
| <span class="sourceLineNo">029</span> * See {@link StripeStoreFileManager} for general documentation.<a name="line.29"></a> |
| <span class="sourceLineNo">030</span> * See getters for the description of each setting.<a name="line.30"></a> |
| <span class="sourceLineNo">031</span> */<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>@InterfaceAudience.Private<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>public class StripeStoreConfig {<a name="line.33"></a> |
| <span class="sourceLineNo">034</span> private static final Logger LOG = LoggerFactory.getLogger(StripeStoreConfig.class);<a name="line.34"></a> |
| <span class="sourceLineNo">035</span><a name="line.35"></a> |
| <span class="sourceLineNo">036</span> /** The maximum number of files to compact within a stripe; same as for regular compaction. */<a name="line.36"></a> |
| <span class="sourceLineNo">037</span> public static final String MAX_FILES_KEY = "hbase.store.stripe.compaction.maxFiles";<a name="line.37"></a> |
| <span class="sourceLineNo">038</span> /** The minimum number of files to compact within a stripe; same as for regular compaction. */<a name="line.38"></a> |
| <span class="sourceLineNo">039</span> public static final String MIN_FILES_KEY = "hbase.store.stripe.compaction.minFiles";<a name="line.39"></a> |
| <span class="sourceLineNo">040</span><a name="line.40"></a> |
| <span class="sourceLineNo">041</span> /** The minimum number of files to compact when compacting L0; same as minFiles for regular<a name="line.41"></a> |
| <span class="sourceLineNo">042</span> * compaction. Given that L0 causes unnecessary overwriting of the data, should be higher than<a name="line.42"></a> |
| <span class="sourceLineNo">043</span> * regular minFiles. */<a name="line.43"></a> |
| <span class="sourceLineNo">044</span> public static final String MIN_FILES_L0_KEY = "hbase.store.stripe.compaction.minFilesL0";<a name="line.44"></a> |
| <span class="sourceLineNo">045</span><a name="line.45"></a> |
| <span class="sourceLineNo">046</span> /** The size the stripe should achieve to be considered for splitting into multiple stripes.<a name="line.46"></a> |
| <span class="sourceLineNo">047</span> Stripe will be split when it can be fully compacted, and it is above this size. */<a name="line.47"></a> |
| <span class="sourceLineNo">048</span> public static final String SIZE_TO_SPLIT_KEY = "hbase.store.stripe.sizeToSplit";<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> /** The target count of new stripes to produce when splitting a stripe. A floating point<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> number, default is 2. Values less than 1 will be converted to 1/x. Non-whole numbers will<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> produce unbalanced splits, which may be good for some cases. In this case the "smaller" of<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> the new stripes will always be the rightmost one. If the stripe is bigger than sizeToSplit<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> when splitting, this will be adjusted by a whole increment. */<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> public static final String SPLIT_PARTS_KEY = "hbase.store.stripe.splitPartCount";<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> /** The initial stripe count to create. If the row distribution is roughly the same over time,<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> it's good to set this to a count of stripes that is expected to be achieved in most regions,<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> to get this count from the outset and prevent unnecessary splitting. */<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> public static final String INITIAL_STRIPE_COUNT_KEY = "hbase.store.stripe.initialStripeCount";<a name="line.58"></a> |
| <span class="sourceLineNo">059</span><a name="line.59"></a> |
| <span class="sourceLineNo">060</span> /** Whether to flush memstore to L0 files, or directly to stripes. */<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> public static final String FLUSH_TO_L0_KEY = "hbase.store.stripe.compaction.flushToL0";<a name="line.61"></a> |
| <span class="sourceLineNo">062</span><a name="line.62"></a> |
| <span class="sourceLineNo">063</span> /** When splitting region, the maximum size imbalance to allow in an attempt to split at a<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> stripe boundary, so that no files go to both regions. Most users won't need to change that. */<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> public static final String MAX_REGION_SPLIT_IMBALANCE_KEY =<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> "hbase.store.stripe.region.split.max.imbalance";<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> |
| <span class="sourceLineNo">069</span> private final float maxRegionSplitImbalance;<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> private final int level0CompactMinFiles;<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> private final int stripeCompactMinFiles;<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> private final int stripeCompactMaxFiles;<a name="line.72"></a> |
| <span class="sourceLineNo">073</span><a name="line.73"></a> |
| <span class="sourceLineNo">074</span> private final int initialCount;<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> private final long sizeToSplitAt;<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> private final float splitPartCount;<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> private final boolean flushIntoL0;<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> private final long splitPartSize; // derived from sizeToSplitAt and splitPartCount<a name="line.78"></a> |
| <span class="sourceLineNo">079</span><a name="line.79"></a> |
| <span class="sourceLineNo">080</span> private static final double EPSILON = 0.001; // good enough for this, not a real epsilon.<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> public StripeStoreConfig(Configuration config, StoreConfigInformation sci) {<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> this.level0CompactMinFiles = config.getInt(MIN_FILES_L0_KEY, 4);<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> this.flushIntoL0 = config.getBoolean(FLUSH_TO_L0_KEY, false);<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> int minMinFiles = flushIntoL0 ? 3 : 4; // make sure not to compact tiny files too often.<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> int minFiles = config.getInt(CompactionConfiguration.HBASE_HSTORE_COMPACTION_MIN_KEY, -1);<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> this.stripeCompactMinFiles = config.getInt(MIN_FILES_KEY, Math.max(minMinFiles, minFiles));<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> this.stripeCompactMaxFiles = config.getInt(MAX_FILES_KEY,<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> config.getInt(CompactionConfiguration.HBASE_HSTORE_COMPACTION_MAX_KEY, 10));<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> this.maxRegionSplitImbalance = getFloat(config, MAX_REGION_SPLIT_IMBALANCE_KEY, 1.5f, true);<a name="line.89"></a> |
| <span class="sourceLineNo">090</span><a name="line.90"></a> |
| <span class="sourceLineNo">091</span> float splitPartCount = getFloat(config, SPLIT_PARTS_KEY, 2f, true);<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> if (Math.abs(splitPartCount - 1.0) < EPSILON) {<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> LOG.error("Split part count cannot be 1 (" + splitPartCount + "), using the default");<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> splitPartCount = 2f;<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> }<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> this.splitPartCount = splitPartCount;<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> // Arbitrary default split size - 4 times the size of one L0 compaction.<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> // If we flush into L0 there's no split compaction, but for default value it is ok.<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> double flushSize = sci.getMemStoreFlushSize();<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> if (flushSize == 0) {<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> flushSize = 128 * 1024 * 1024;<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> }<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> long defaultSplitSize = (long)(flushSize * getLevel0MinFiles() * 4 * splitPartCount);<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> this.sizeToSplitAt = config.getLong(SIZE_TO_SPLIT_KEY, defaultSplitSize);<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> int initialCount = config.getInt(INITIAL_STRIPE_COUNT_KEY, 1);<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> if (initialCount == 0) {<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> LOG.error("Initial stripe count is 0, using the default");<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> initialCount = 1;<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> }<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> this.initialCount = initialCount;<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> this.splitPartSize = (long)(this.sizeToSplitAt / this.splitPartCount);<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> }<a name="line.112"></a> |
| <span class="sourceLineNo">113</span><a name="line.113"></a> |
| <span class="sourceLineNo">114</span> private static float getFloat(<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> Configuration config, String key, float defaultValue, boolean moreThanOne) {<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> float value = config.getFloat(key, defaultValue);<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> if (value < EPSILON) {<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> LOG.warn(String.format(<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> "%s is set to 0 or negative; using default value of %f", key, defaultValue));<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> value = defaultValue;<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> } else if ((value > 1f) != moreThanOne) {<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> value = 1f / value;<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> }<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> return value;<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> }<a name="line.125"></a> |
| <span class="sourceLineNo">126</span><a name="line.126"></a> |
| <span class="sourceLineNo">127</span> public float getMaxSplitImbalance() {<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> return this.maxRegionSplitImbalance;<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> }<a name="line.129"></a> |
| <span class="sourceLineNo">130</span><a name="line.130"></a> |
| <span class="sourceLineNo">131</span> public int getLevel0MinFiles() {<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> return level0CompactMinFiles;<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> }<a name="line.133"></a> |
| <span class="sourceLineNo">134</span><a name="line.134"></a> |
| <span class="sourceLineNo">135</span> public int getStripeCompactMinFiles() {<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> return stripeCompactMinFiles;<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> }<a name="line.137"></a> |
| <span class="sourceLineNo">138</span><a name="line.138"></a> |
| <span class="sourceLineNo">139</span> public int getStripeCompactMaxFiles() {<a name="line.139"></a> |
| <span class="sourceLineNo">140</span> return stripeCompactMaxFiles;<a name="line.140"></a> |
| <span class="sourceLineNo">141</span> }<a name="line.141"></a> |
| <span class="sourceLineNo">142</span><a name="line.142"></a> |
| <span class="sourceLineNo">143</span> public boolean isUsingL0Flush() {<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> return flushIntoL0;<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> }<a name="line.145"></a> |
| <span class="sourceLineNo">146</span><a name="line.146"></a> |
| <span class="sourceLineNo">147</span> public long getSplitSize() {<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> return sizeToSplitAt;<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> }<a name="line.149"></a> |
| <span class="sourceLineNo">150</span><a name="line.150"></a> |
| <span class="sourceLineNo">151</span> public int getInitialCount() {<a name="line.151"></a> |
| <span class="sourceLineNo">152</span> return initialCount;<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> }<a name="line.153"></a> |
| <span class="sourceLineNo">154</span><a name="line.154"></a> |
| <span class="sourceLineNo">155</span> public float getSplitCount() {<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> return splitPartCount;<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> * @return the desired size of the target stripe when splitting, in bytes.<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> * Derived from {@link #getSplitSize()} and {@link #getSplitCount()}.<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> */<a name="line.162"></a> |
| <span class="sourceLineNo">163</span> public long getSplitPartSize() {<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> return splitPartSize;<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> }<a name="line.165"></a> |
| <span class="sourceLineNo">166</span>}<a name="line.166"></a> |
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