You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@hbase.apache.org by gi...@apache.org on 2017/05/26 14:59:56 UTC
[06/32] hbase-site git commit: Published site at
82d554e3783372cc6b05489452c815b57c06f6cd.
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/be6f38d2/testdevapidocs/src-html/org/apache/hadoop/hbase/regionserver/TestMemStoreLAB.AllocRecord.html
----------------------------------------------------------------------
diff --git a/testdevapidocs/src-html/org/apache/hadoop/hbase/regionserver/TestMemStoreLAB.AllocRecord.html b/testdevapidocs/src-html/org/apache/hadoop/hbase/regionserver/TestMemStoreLAB.AllocRecord.html
index 8043566..e563799 100644
--- a/testdevapidocs/src-html/org/apache/hadoop/hbase/regionserver/TestMemStoreLAB.AllocRecord.html
+++ b/testdevapidocs/src-html/org/apache/hadoop/hbase/regionserver/TestMemStoreLAB.AllocRecord.html
@@ -48,268 +48,276 @@
<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.testclassification.RegionServerTests;<a name="line.40"></a>
<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.testclassification.SmallTests;<a name="line.41"></a>
<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.42"></a>
-<span class="sourceLineNo">043</span>import org.junit.BeforeClass;<a name="line.43"></a>
-<span class="sourceLineNo">044</span>import org.junit.Test;<a name="line.44"></a>
-<span class="sourceLineNo">045</span><a name="line.45"></a>
-<span class="sourceLineNo">046</span>import com.google.common.collect.Iterables;<a name="line.46"></a>
-<span class="sourceLineNo">047</span>import com.google.common.collect.Lists;<a name="line.47"></a>
-<span class="sourceLineNo">048</span>import com.google.common.collect.Maps;<a name="line.48"></a>
-<span class="sourceLineNo">049</span>import com.google.common.primitives.Ints;<a name="line.49"></a>
-<span class="sourceLineNo">050</span><a name="line.50"></a>
-<span class="sourceLineNo">051</span>import org.junit.experimental.categories.Category;<a name="line.51"></a>
-<span class="sourceLineNo">052</span><a name="line.52"></a>
-<span class="sourceLineNo">053</span>@Category({RegionServerTests.class, SmallTests.class})<a name="line.53"></a>
-<span class="sourceLineNo">054</span>public class TestMemStoreLAB {<a name="line.54"></a>
-<span class="sourceLineNo">055</span><a name="line.55"></a>
-<span class="sourceLineNo">056</span> private final static Configuration conf = new Configuration();<a name="line.56"></a>
-<span class="sourceLineNo">057</span><a name="line.57"></a>
-<span class="sourceLineNo">058</span> private static final byte[] rk = Bytes.toBytes("r1");<a name="line.58"></a>
-<span class="sourceLineNo">059</span> private static final byte[] cf = Bytes.toBytes("f");<a name="line.59"></a>
-<span class="sourceLineNo">060</span> private static final byte[] q = Bytes.toBytes("q");<a name="line.60"></a>
-<span class="sourceLineNo">061</span><a name="line.61"></a>
-<span class="sourceLineNo">062</span> @BeforeClass<a name="line.62"></a>
-<span class="sourceLineNo">063</span> public static void setUpBeforeClass() throws Exception {<a name="line.63"></a>
-<span class="sourceLineNo">064</span> long globalMemStoreLimit = (long) (ManagementFactory.getMemoryMXBean().getHeapMemoryUsage()<a name="line.64"></a>
-<span class="sourceLineNo">065</span> .getMax() * MemorySizeUtil.getGlobalMemStoreHeapPercent(conf, false));<a name="line.65"></a>
-<span class="sourceLineNo">066</span> ChunkCreator.initialize(MemStoreLABImpl.CHUNK_SIZE_DEFAULT, false, globalMemStoreLimit,<a name="line.66"></a>
-<span class="sourceLineNo">067</span> 0.2f, MemStoreLAB.POOL_INITIAL_SIZE_DEFAULT, null);<a name="line.67"></a>
-<span class="sourceLineNo">068</span> }<a name="line.68"></a>
-<span class="sourceLineNo">069</span><a name="line.69"></a>
-<span class="sourceLineNo">070</span> /**<a name="line.70"></a>
-<span class="sourceLineNo">071</span> * Test a bunch of random allocations<a name="line.71"></a>
-<span class="sourceLineNo">072</span> */<a name="line.72"></a>
-<span class="sourceLineNo">073</span> @Test<a name="line.73"></a>
-<span class="sourceLineNo">074</span> public void testLABRandomAllocation() {<a name="line.74"></a>
-<span class="sourceLineNo">075</span> Random rand = new Random();<a name="line.75"></a>
-<span class="sourceLineNo">076</span> MemStoreLAB mslab = new MemStoreLABImpl();<a name="line.76"></a>
-<span class="sourceLineNo">077</span> int expectedOff = 0;<a name="line.77"></a>
-<span class="sourceLineNo">078</span> ByteBuffer lastBuffer = null;<a name="line.78"></a>
-<span class="sourceLineNo">079</span> int lastChunkId = -1;<a name="line.79"></a>
-<span class="sourceLineNo">080</span> // 100K iterations by 0-1K alloc -> 50MB expected<a name="line.80"></a>
-<span class="sourceLineNo">081</span> // should be reasonable for unit test and also cover wraparound<a name="line.81"></a>
-<span class="sourceLineNo">082</span> // behavior<a name="line.82"></a>
-<span class="sourceLineNo">083</span> for (int i = 0; i < 100000; i++) {<a name="line.83"></a>
-<span class="sourceLineNo">084</span> int valSize = rand.nextInt(1000);<a name="line.84"></a>
-<span class="sourceLineNo">085</span> KeyValue kv = new KeyValue(rk, cf, q, new byte[valSize]);<a name="line.85"></a>
-<span class="sourceLineNo">086</span> int size = KeyValueUtil.length(kv);<a name="line.86"></a>
-<span class="sourceLineNo">087</span> ByteBufferKeyValue newKv = (ByteBufferKeyValue) mslab.copyCellInto(kv);<a name="line.87"></a>
-<span class="sourceLineNo">088</span> if (newKv.getBuffer() != lastBuffer) {<a name="line.88"></a>
-<span class="sourceLineNo">089</span> // since we add the chunkID at the 0th offset of the chunk and the<a name="line.89"></a>
-<span class="sourceLineNo">090</span> // chunkid is an int we need to account for those 4 bytes<a name="line.90"></a>
-<span class="sourceLineNo">091</span> expectedOff = Bytes.SIZEOF_INT;<a name="line.91"></a>
-<span class="sourceLineNo">092</span> lastBuffer = newKv.getBuffer();<a name="line.92"></a>
-<span class="sourceLineNo">093</span> int chunkId = newKv.getBuffer().getInt(0);<a name="line.93"></a>
-<span class="sourceLineNo">094</span> assertTrue("chunkid should be different", chunkId != lastChunkId);<a name="line.94"></a>
-<span class="sourceLineNo">095</span> lastChunkId = chunkId;<a name="line.95"></a>
-<span class="sourceLineNo">096</span> }<a name="line.96"></a>
-<span class="sourceLineNo">097</span> assertEquals(expectedOff, newKv.getOffset());<a name="line.97"></a>
-<span class="sourceLineNo">098</span> assertTrue("Allocation overruns buffer",<a name="line.98"></a>
-<span class="sourceLineNo">099</span> newKv.getOffset() + size <= newKv.getBuffer().capacity());<a name="line.99"></a>
-<span class="sourceLineNo">100</span> expectedOff += size;<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> @Test<a name="line.104"></a>
-<span class="sourceLineNo">105</span> public void testLABLargeAllocation() {<a name="line.105"></a>
-<span class="sourceLineNo">106</span> MemStoreLAB mslab = new MemStoreLABImpl();<a name="line.106"></a>
-<span class="sourceLineNo">107</span> KeyValue kv = new KeyValue(rk, cf, q, new byte[2 * 1024 * 1024]);<a name="line.107"></a>
-<span class="sourceLineNo">108</span> Cell newCell = mslab.copyCellInto(kv);<a name="line.108"></a>
-<span class="sourceLineNo">109</span> assertNull("2MB allocation shouldn't be satisfied by LAB.", newCell);<a name="line.109"></a>
+<span class="sourceLineNo">043</span>import org.junit.AfterClass;<a name="line.43"></a>
+<span class="sourceLineNo">044</span>import org.junit.BeforeClass;<a name="line.44"></a>
+<span class="sourceLineNo">045</span>import org.junit.Test;<a name="line.45"></a>
+<span class="sourceLineNo">046</span><a name="line.46"></a>
+<span class="sourceLineNo">047</span>import com.google.common.collect.Iterables;<a name="line.47"></a>
+<span class="sourceLineNo">048</span>import com.google.common.collect.Lists;<a name="line.48"></a>
+<span class="sourceLineNo">049</span>import com.google.common.collect.Maps;<a name="line.49"></a>
+<span class="sourceLineNo">050</span>import com.google.common.primitives.Ints;<a name="line.50"></a>
+<span class="sourceLineNo">051</span><a name="line.51"></a>
+<span class="sourceLineNo">052</span>import org.junit.experimental.categories.Category;<a name="line.52"></a>
+<span class="sourceLineNo">053</span><a name="line.53"></a>
+<span class="sourceLineNo">054</span>@Category({RegionServerTests.class, SmallTests.class})<a name="line.54"></a>
+<span class="sourceLineNo">055</span>public class TestMemStoreLAB {<a name="line.55"></a>
+<span class="sourceLineNo">056</span><a name="line.56"></a>
+<span class="sourceLineNo">057</span> private final static Configuration conf = new Configuration();<a name="line.57"></a>
+<span class="sourceLineNo">058</span><a name="line.58"></a>
+<span class="sourceLineNo">059</span> private static final byte[] rk = Bytes.toBytes("r1");<a name="line.59"></a>
+<span class="sourceLineNo">060</span> private static final byte[] cf = Bytes.toBytes("f");<a name="line.60"></a>
+<span class="sourceLineNo">061</span> private static final byte[] q = Bytes.toBytes("q");<a name="line.61"></a>
+<span class="sourceLineNo">062</span><a name="line.62"></a>
+<span class="sourceLineNo">063</span> @BeforeClass<a name="line.63"></a>
+<span class="sourceLineNo">064</span> public static void setUpBeforeClass() throws Exception {<a name="line.64"></a>
+<span class="sourceLineNo">065</span> ChunkCreator.initialize(1 * 1024, false, 50*1024000l, 0.2f, MemStoreLAB.POOL_INITIAL_SIZE_DEFAULT,<a name="line.65"></a>
+<span class="sourceLineNo">066</span> null);<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> @AfterClass<a name="line.69"></a>
+<span class="sourceLineNo">070</span> public static void tearDownAfterClass() throws Exception {<a name="line.70"></a>
+<span class="sourceLineNo">071</span> long globalMemStoreLimit =<a name="line.71"></a>
+<span class="sourceLineNo">072</span> (long) (ManagementFactory.getMemoryMXBean().getHeapMemoryUsage().getMax()<a name="line.72"></a>
+<span class="sourceLineNo">073</span> * MemorySizeUtil.getGlobalMemStoreHeapPercent(conf, false));<a name="line.73"></a>
+<span class="sourceLineNo">074</span> ChunkCreator.initialize(MemStoreLABImpl.CHUNK_SIZE_DEFAULT, false, globalMemStoreLimit, 0.2f,<a name="line.74"></a>
+<span class="sourceLineNo">075</span> MemStoreLAB.POOL_INITIAL_SIZE_DEFAULT, null);<a name="line.75"></a>
+<span class="sourceLineNo">076</span> }<a name="line.76"></a>
+<span class="sourceLineNo">077</span><a name="line.77"></a>
+<span class="sourceLineNo">078</span> /**<a name="line.78"></a>
+<span class="sourceLineNo">079</span> * Test a bunch of random allocations<a name="line.79"></a>
+<span class="sourceLineNo">080</span> */<a name="line.80"></a>
+<span class="sourceLineNo">081</span> @Test<a name="line.81"></a>
+<span class="sourceLineNo">082</span> public void testLABRandomAllocation() {<a name="line.82"></a>
+<span class="sourceLineNo">083</span> Random rand = new Random();<a name="line.83"></a>
+<span class="sourceLineNo">084</span> MemStoreLAB mslab = new MemStoreLABImpl();<a name="line.84"></a>
+<span class="sourceLineNo">085</span> int expectedOff = 0;<a name="line.85"></a>
+<span class="sourceLineNo">086</span> ByteBuffer lastBuffer = null;<a name="line.86"></a>
+<span class="sourceLineNo">087</span> int lastChunkId = -1;<a name="line.87"></a>
+<span class="sourceLineNo">088</span> // 100K iterations by 0-1K alloc -> 50MB expected<a name="line.88"></a>
+<span class="sourceLineNo">089</span> // should be reasonable for unit test and also cover wraparound<a name="line.89"></a>
+<span class="sourceLineNo">090</span> // behavior<a name="line.90"></a>
+<span class="sourceLineNo">091</span> for (int i = 0; i < 100000; i++) {<a name="line.91"></a>
+<span class="sourceLineNo">092</span> int valSize = rand.nextInt(3);<a name="line.92"></a>
+<span class="sourceLineNo">093</span> KeyValue kv = new KeyValue(rk, cf, q, new byte[valSize]);<a name="line.93"></a>
+<span class="sourceLineNo">094</span> int size = KeyValueUtil.length(kv);<a name="line.94"></a>
+<span class="sourceLineNo">095</span> ByteBufferKeyValue newKv = (ByteBufferKeyValue) mslab.copyCellInto(kv);<a name="line.95"></a>
+<span class="sourceLineNo">096</span> if (newKv.getBuffer() != lastBuffer) {<a name="line.96"></a>
+<span class="sourceLineNo">097</span> // since we add the chunkID at the 0th offset of the chunk and the<a name="line.97"></a>
+<span class="sourceLineNo">098</span> // chunkid is an int we need to account for those 4 bytes<a name="line.98"></a>
+<span class="sourceLineNo">099</span> expectedOff = Bytes.SIZEOF_INT;<a name="line.99"></a>
+<span class="sourceLineNo">100</span> lastBuffer = newKv.getBuffer();<a name="line.100"></a>
+<span class="sourceLineNo">101</span> int chunkId = newKv.getBuffer().getInt(0);<a name="line.101"></a>
+<span class="sourceLineNo">102</span> assertTrue("chunkid should be different", chunkId != lastChunkId);<a name="line.102"></a>
+<span class="sourceLineNo">103</span> lastChunkId = chunkId;<a name="line.103"></a>
+<span class="sourceLineNo">104</span> }<a name="line.104"></a>
+<span class="sourceLineNo">105</span> assertEquals(expectedOff, newKv.getOffset());<a name="line.105"></a>
+<span class="sourceLineNo">106</span> assertTrue("Allocation overruns buffer",<a name="line.106"></a>
+<span class="sourceLineNo">107</span> newKv.getOffset() + size <= newKv.getBuffer().capacity());<a name="line.107"></a>
+<span class="sourceLineNo">108</span> expectedOff += size;<a name="line.108"></a>
+<span class="sourceLineNo">109</span> }<a name="line.109"></a>
<span class="sourceLineNo">110</span> }<a name="line.110"></a>
<span class="sourceLineNo">111</span><a name="line.111"></a>
-<span class="sourceLineNo">112</span> /**<a name="line.112"></a>
-<span class="sourceLineNo">113</span> * Test allocation from lots of threads, making sure the results don't<a name="line.113"></a>
-<span class="sourceLineNo">114</span> * overlap in any way<a name="line.114"></a>
-<span class="sourceLineNo">115</span> */<a name="line.115"></a>
-<span class="sourceLineNo">116</span> @Test<a name="line.116"></a>
-<span class="sourceLineNo">117</span> public void testLABThreading() throws Exception {<a name="line.117"></a>
-<span class="sourceLineNo">118</span> Configuration conf = new Configuration();<a name="line.118"></a>
-<span class="sourceLineNo">119</span> MultithreadedTestUtil.TestContext ctx =<a name="line.119"></a>
-<span class="sourceLineNo">120</span> new MultithreadedTestUtil.TestContext(conf);<a name="line.120"></a>
-<span class="sourceLineNo">121</span> <a name="line.121"></a>
-<span class="sourceLineNo">122</span> final AtomicInteger totalAllocated = new AtomicInteger();<a name="line.122"></a>
-<span class="sourceLineNo">123</span> <a name="line.123"></a>
-<span class="sourceLineNo">124</span> final MemStoreLAB mslab = new MemStoreLABImpl();<a name="line.124"></a>
-<span class="sourceLineNo">125</span> List<List<AllocRecord>> allocations = Lists.newArrayList();<a name="line.125"></a>
-<span class="sourceLineNo">126</span> <a name="line.126"></a>
-<span class="sourceLineNo">127</span> for (int i = 0; i < 10; i++) {<a name="line.127"></a>
-<span class="sourceLineNo">128</span> final List<AllocRecord> allocsByThisThread = Lists.newLinkedList();<a name="line.128"></a>
-<span class="sourceLineNo">129</span> allocations.add(allocsByThisThread);<a name="line.129"></a>
-<span class="sourceLineNo">130</span> <a name="line.130"></a>
-<span class="sourceLineNo">131</span> TestThread t = new MultithreadedTestUtil.RepeatingTestThread(ctx) {<a name="line.131"></a>
-<span class="sourceLineNo">132</span> private Random r = new Random();<a name="line.132"></a>
-<span class="sourceLineNo">133</span> @Override<a name="line.133"></a>
-<span class="sourceLineNo">134</span> public void doAnAction() throws Exception {<a name="line.134"></a>
-<span class="sourceLineNo">135</span> int valSize = r.nextInt(1000);<a name="line.135"></a>
-<span class="sourceLineNo">136</span> KeyValue kv = new KeyValue(rk, cf, q, new byte[valSize]);<a name="line.136"></a>
-<span class="sourceLineNo">137</span> int size = KeyValueUtil.length(kv);<a name="line.137"></a>
-<span class="sourceLineNo">138</span> ByteBufferKeyValue newCell = (ByteBufferKeyValue) mslab.copyCellInto(kv);<a name="line.138"></a>
-<span class="sourceLineNo">139</span> totalAllocated.addAndGet(size);<a name="line.139"></a>
-<span class="sourceLineNo">140</span> allocsByThisThread.add(new AllocRecord(newCell.getBuffer(), newCell.getOffset(), size));<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> ctx.addThread(t);<a name="line.143"></a>
-<span class="sourceLineNo">144</span> }<a name="line.144"></a>
-<span class="sourceLineNo">145</span><a name="line.145"></a>
-<span class="sourceLineNo">146</span> ctx.startThreads();<a name="line.146"></a>
-<span class="sourceLineNo">147</span> while (totalAllocated.get() < 50*1024*1024 && ctx.shouldRun()) {<a name="line.147"></a>
-<span class="sourceLineNo">148</span> Thread.sleep(10);<a name="line.148"></a>
-<span class="sourceLineNo">149</span> }<a name="line.149"></a>
-<span class="sourceLineNo">150</span> ctx.stop();<a name="line.150"></a>
-<span class="sourceLineNo">151</span> // Partition the allocations by the actual byte[] they point into,<a name="line.151"></a>
-<span class="sourceLineNo">152</span> // make sure offsets are unique for each chunk<a name="line.152"></a>
-<span class="sourceLineNo">153</span> Map<ByteBuffer, Map<Integer, AllocRecord>> mapsByChunk =<a name="line.153"></a>
-<span class="sourceLineNo">154</span> Maps.newHashMap();<a name="line.154"></a>
-<span class="sourceLineNo">155</span><a name="line.155"></a>
-<span class="sourceLineNo">156</span> int sizeCounted = 0;<a name="line.156"></a>
-<span class="sourceLineNo">157</span> for (AllocRecord rec : Iterables.concat(allocations)) {<a name="line.157"></a>
-<span class="sourceLineNo">158</span> sizeCounted += rec.size;<a name="line.158"></a>
-<span class="sourceLineNo">159</span> if (rec.size == 0) continue;<a name="line.159"></a>
-<span class="sourceLineNo">160</span> Map<Integer, AllocRecord> mapForThisByteArray =<a name="line.160"></a>
-<span class="sourceLineNo">161</span> mapsByChunk.get(rec.alloc);<a name="line.161"></a>
-<span class="sourceLineNo">162</span> if (mapForThisByteArray == null) {<a name="line.162"></a>
-<span class="sourceLineNo">163</span> mapForThisByteArray = Maps.newTreeMap();<a name="line.163"></a>
-<span class="sourceLineNo">164</span> mapsByChunk.put(rec.alloc, mapForThisByteArray);<a name="line.164"></a>
-<span class="sourceLineNo">165</span> }<a name="line.165"></a>
-<span class="sourceLineNo">166</span> AllocRecord oldVal = mapForThisByteArray.put(rec.offset, rec);<a name="line.166"></a>
-<span class="sourceLineNo">167</span> assertNull("Already had an entry " + oldVal + " for allocation " + rec,<a name="line.167"></a>
-<span class="sourceLineNo">168</span> oldVal);<a name="line.168"></a>
-<span class="sourceLineNo">169</span> }<a name="line.169"></a>
-<span class="sourceLineNo">170</span> assertEquals("Sanity check test", sizeCounted, totalAllocated.get());<a name="line.170"></a>
-<span class="sourceLineNo">171</span> <a name="line.171"></a>
-<span class="sourceLineNo">172</span> // Now check each byte array to make sure allocations don't overlap<a name="line.172"></a>
-<span class="sourceLineNo">173</span> for (Map<Integer, AllocRecord> allocsInChunk : mapsByChunk.values()) {<a name="line.173"></a>
-<span class="sourceLineNo">174</span> // since we add the chunkID at the 0th offset of the chunk and the<a name="line.174"></a>
-<span class="sourceLineNo">175</span> // chunkid is an int we need to account for those 4 bytes<a name="line.175"></a>
-<span class="sourceLineNo">176</span> int expectedOff = Bytes.SIZEOF_INT;<a name="line.176"></a>
-<span class="sourceLineNo">177</span> for (AllocRecord alloc : allocsInChunk.values()) {<a name="line.177"></a>
-<span class="sourceLineNo">178</span> assertEquals(expectedOff, alloc.offset);<a name="line.178"></a>
-<span class="sourceLineNo">179</span> assertTrue("Allocation overruns buffer",<a name="line.179"></a>
-<span class="sourceLineNo">180</span> alloc.offset + alloc.size <= alloc.alloc.capacity());<a name="line.180"></a>
-<span class="sourceLineNo">181</span> expectedOff += alloc.size;<a name="line.181"></a>
-<span class="sourceLineNo">182</span> }<a name="line.182"></a>
-<span class="sourceLineNo">183</span> }<a name="line.183"></a>
-<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> /**<a name="line.186"></a>
-<span class="sourceLineNo">187</span> * Test frequent chunk retirement with chunk pool triggered by lots of threads, making sure<a name="line.187"></a>
-<span class="sourceLineNo">188</span> * there's no memory leak (HBASE-16195)<a name="line.188"></a>
-<span class="sourceLineNo">189</span> * @throws Exception if any error occurred<a name="line.189"></a>
-<span class="sourceLineNo">190</span> */<a name="line.190"></a>
-<span class="sourceLineNo">191</span> @Test<a name="line.191"></a>
-<span class="sourceLineNo">192</span> public void testLABChunkQueue() throws Exception {<a name="line.192"></a>
-<span class="sourceLineNo">193</span> ChunkCreator oldInstance = null;<a name="line.193"></a>
-<span class="sourceLineNo">194</span> try {<a name="line.194"></a>
-<span class="sourceLineNo">195</span> MemStoreLABImpl mslab = new MemStoreLABImpl();<a name="line.195"></a>
-<span class="sourceLineNo">196</span> // by default setting, there should be no chunks initialized in the pool<a name="line.196"></a>
-<span class="sourceLineNo">197</span> assertTrue(mslab.getPooledChunks().isEmpty());<a name="line.197"></a>
-<span class="sourceLineNo">198</span> oldInstance = ChunkCreator.INSTANCE;<a name="line.198"></a>
-<span class="sourceLineNo">199</span> ChunkCreator.INSTANCE = null;<a name="line.199"></a>
-<span class="sourceLineNo">200</span> // reset mslab with chunk pool<a name="line.200"></a>
-<span class="sourceLineNo">201</span> Configuration conf = HBaseConfiguration.create();<a name="line.201"></a>
-<span class="sourceLineNo">202</span> conf.setDouble(MemStoreLAB.CHUNK_POOL_MAXSIZE_KEY, 0.1);<a name="line.202"></a>
-<span class="sourceLineNo">203</span> // set chunk size to default max alloc size, so we could easily trigger chunk retirement<a name="line.203"></a>
-<span class="sourceLineNo">204</span> conf.setLong(MemStoreLABImpl.CHUNK_SIZE_KEY, MemStoreLABImpl.MAX_ALLOC_DEFAULT);<a name="line.204"></a>
-<span class="sourceLineNo">205</span> // reconstruct mslab<a name="line.205"></a>
-<span class="sourceLineNo">206</span> long globalMemStoreLimit = (long) (ManagementFactory.getMemoryMXBean().getHeapMemoryUsage()<a name="line.206"></a>
-<span class="sourceLineNo">207</span> .getMax() * MemorySizeUtil.getGlobalMemStoreHeapPercent(conf, false));<a name="line.207"></a>
-<span class="sourceLineNo">208</span> ChunkCreator.initialize(MemStoreLABImpl.MAX_ALLOC_DEFAULT, false,<a name="line.208"></a>
-<span class="sourceLineNo">209</span> globalMemStoreLimit, 0.1f, MemStoreLAB.POOL_INITIAL_SIZE_DEFAULT, null);<a name="line.209"></a>
-<span class="sourceLineNo">210</span> ChunkCreator.clearDisableFlag();<a name="line.210"></a>
-<span class="sourceLineNo">211</span> mslab = new MemStoreLABImpl(conf);<a name="line.211"></a>
-<span class="sourceLineNo">212</span> // launch multiple threads to trigger frequent chunk retirement<a name="line.212"></a>
-<span class="sourceLineNo">213</span> List<Thread> threads = new ArrayList<>();<a name="line.213"></a>
-<span class="sourceLineNo">214</span> final KeyValue kv = new KeyValue(Bytes.toBytes("r"), Bytes.toBytes("f"), Bytes.toBytes("q"),<a name="line.214"></a>
-<span class="sourceLineNo">215</span> new byte[MemStoreLABImpl.MAX_ALLOC_DEFAULT - 32]);<a name="line.215"></a>
-<span class="sourceLineNo">216</span> for (int i = 0; i < 10; i++) {<a name="line.216"></a>
-<span class="sourceLineNo">217</span> threads.add(getChunkQueueTestThread(mslab, "testLABChunkQueue-" + i, kv));<a name="line.217"></a>
-<span class="sourceLineNo">218</span> }<a name="line.218"></a>
-<span class="sourceLineNo">219</span> for (Thread thread : threads) {<a name="line.219"></a>
-<span class="sourceLineNo">220</span> thread.start();<a name="line.220"></a>
-<span class="sourceLineNo">221</span> }<a name="line.221"></a>
-<span class="sourceLineNo">222</span> // let it run for some time<a name="line.222"></a>
-<span class="sourceLineNo">223</span> Thread.sleep(1000);<a name="line.223"></a>
-<span class="sourceLineNo">224</span> for (Thread thread : threads) {<a name="line.224"></a>
-<span class="sourceLineNo">225</span> thread.interrupt();<a name="line.225"></a>
+<span class="sourceLineNo">112</span> @Test<a name="line.112"></a>
+<span class="sourceLineNo">113</span> public void testLABLargeAllocation() {<a name="line.113"></a>
+<span class="sourceLineNo">114</span> MemStoreLAB mslab = new MemStoreLABImpl();<a name="line.114"></a>
+<span class="sourceLineNo">115</span> KeyValue kv = new KeyValue(rk, cf, q, new byte[2 * 1024 * 1024]);<a name="line.115"></a>
+<span class="sourceLineNo">116</span> Cell newCell = mslab.copyCellInto(kv);<a name="line.116"></a>
+<span class="sourceLineNo">117</span> assertNull("2MB allocation shouldn't be satisfied by LAB.", newCell);<a name="line.117"></a>
+<span class="sourceLineNo">118</span> }<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> * Test allocation from lots of threads, making sure the results don't<a name="line.121"></a>
+<span class="sourceLineNo">122</span> * overlap in any way<a name="line.122"></a>
+<span class="sourceLineNo">123</span> */<a name="line.123"></a>
+<span class="sourceLineNo">124</span> @Test<a name="line.124"></a>
+<span class="sourceLineNo">125</span> public void testLABThreading() throws Exception {<a name="line.125"></a>
+<span class="sourceLineNo">126</span> Configuration conf = new Configuration();<a name="line.126"></a>
+<span class="sourceLineNo">127</span> MultithreadedTestUtil.TestContext ctx =<a name="line.127"></a>
+<span class="sourceLineNo">128</span> new MultithreadedTestUtil.TestContext(conf);<a name="line.128"></a>
+<span class="sourceLineNo">129</span> <a name="line.129"></a>
+<span class="sourceLineNo">130</span> final AtomicInteger totalAllocated = new AtomicInteger();<a name="line.130"></a>
+<span class="sourceLineNo">131</span> <a name="line.131"></a>
+<span class="sourceLineNo">132</span> final MemStoreLAB mslab = new MemStoreLABImpl();<a name="line.132"></a>
+<span class="sourceLineNo">133</span> List<List<AllocRecord>> allocations = Lists.newArrayList();<a name="line.133"></a>
+<span class="sourceLineNo">134</span> <a name="line.134"></a>
+<span class="sourceLineNo">135</span> for (int i = 0; i < 10; i++) {<a name="line.135"></a>
+<span class="sourceLineNo">136</span> final List<AllocRecord> allocsByThisThread = Lists.newLinkedList();<a name="line.136"></a>
+<span class="sourceLineNo">137</span> allocations.add(allocsByThisThread);<a name="line.137"></a>
+<span class="sourceLineNo">138</span> <a name="line.138"></a>
+<span class="sourceLineNo">139</span> TestThread t = new MultithreadedTestUtil.RepeatingTestThread(ctx) {<a name="line.139"></a>
+<span class="sourceLineNo">140</span> private Random r = new Random();<a name="line.140"></a>
+<span class="sourceLineNo">141</span> @Override<a name="line.141"></a>
+<span class="sourceLineNo">142</span> public void doAnAction() throws Exception {<a name="line.142"></a>
+<span class="sourceLineNo">143</span> int valSize = r.nextInt(3);<a name="line.143"></a>
+<span class="sourceLineNo">144</span> KeyValue kv = new KeyValue(rk, cf, q, new byte[valSize]);<a name="line.144"></a>
+<span class="sourceLineNo">145</span> int size = KeyValueUtil.length(kv);<a name="line.145"></a>
+<span class="sourceLineNo">146</span> ByteBufferKeyValue newCell = (ByteBufferKeyValue) mslab.copyCellInto(kv);<a name="line.146"></a>
+<span class="sourceLineNo">147</span> totalAllocated.addAndGet(size);<a name="line.147"></a>
+<span class="sourceLineNo">148</span> allocsByThisThread.add(new AllocRecord(newCell.getBuffer(), newCell.getOffset(), size));<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> ctx.addThread(t);<a name="line.151"></a>
+<span class="sourceLineNo">152</span> }<a name="line.152"></a>
+<span class="sourceLineNo">153</span><a name="line.153"></a>
+<span class="sourceLineNo">154</span> ctx.startThreads();<a name="line.154"></a>
+<span class="sourceLineNo">155</span> while (totalAllocated.get() < 50*1024*1000 && ctx.shouldRun()) {<a name="line.155"></a>
+<span class="sourceLineNo">156</span> Thread.sleep(10);<a name="line.156"></a>
+<span class="sourceLineNo">157</span> }<a name="line.157"></a>
+<span class="sourceLineNo">158</span> ctx.stop();<a name="line.158"></a>
+<span class="sourceLineNo">159</span> // Partition the allocations by the actual byte[] they point into,<a name="line.159"></a>
+<span class="sourceLineNo">160</span> // make sure offsets are unique for each chunk<a name="line.160"></a>
+<span class="sourceLineNo">161</span> Map<ByteBuffer, Map<Integer, AllocRecord>> mapsByChunk =<a name="line.161"></a>
+<span class="sourceLineNo">162</span> Maps.newHashMap();<a name="line.162"></a>
+<span class="sourceLineNo">163</span><a name="line.163"></a>
+<span class="sourceLineNo">164</span> int sizeCounted = 0;<a name="line.164"></a>
+<span class="sourceLineNo">165</span> for (AllocRecord rec : Iterables.concat(allocations)) {<a name="line.165"></a>
+<span class="sourceLineNo">166</span> sizeCounted += rec.size;<a name="line.166"></a>
+<span class="sourceLineNo">167</span> if (rec.size == 0) continue;<a name="line.167"></a>
+<span class="sourceLineNo">168</span> Map<Integer, AllocRecord> mapForThisByteArray =<a name="line.168"></a>
+<span class="sourceLineNo">169</span> mapsByChunk.get(rec.alloc);<a name="line.169"></a>
+<span class="sourceLineNo">170</span> if (mapForThisByteArray == null) {<a name="line.170"></a>
+<span class="sourceLineNo">171</span> mapForThisByteArray = Maps.newTreeMap();<a name="line.171"></a>
+<span class="sourceLineNo">172</span> mapsByChunk.put(rec.alloc, mapForThisByteArray);<a name="line.172"></a>
+<span class="sourceLineNo">173</span> }<a name="line.173"></a>
+<span class="sourceLineNo">174</span> AllocRecord oldVal = mapForThisByteArray.put(rec.offset, rec);<a name="line.174"></a>
+<span class="sourceLineNo">175</span> assertNull("Already had an entry " + oldVal + " for allocation " + rec,<a name="line.175"></a>
+<span class="sourceLineNo">176</span> oldVal);<a name="line.176"></a>
+<span class="sourceLineNo">177</span> }<a name="line.177"></a>
+<span class="sourceLineNo">178</span> assertEquals("Sanity check test", sizeCounted, totalAllocated.get());<a name="line.178"></a>
+<span class="sourceLineNo">179</span> <a name="line.179"></a>
+<span class="sourceLineNo">180</span> // Now check each byte array to make sure allocations don't overlap<a name="line.180"></a>
+<span class="sourceLineNo">181</span> for (Map<Integer, AllocRecord> allocsInChunk : mapsByChunk.values()) {<a name="line.181"></a>
+<span class="sourceLineNo">182</span> // since we add the chunkID at the 0th offset of the chunk and the<a name="line.182"></a>
+<span class="sourceLineNo">183</span> // chunkid is an int we need to account for those 4 bytes<a name="line.183"></a>
+<span class="sourceLineNo">184</span> int expectedOff = Bytes.SIZEOF_INT;<a name="line.184"></a>
+<span class="sourceLineNo">185</span> for (AllocRecord alloc : allocsInChunk.values()) {<a name="line.185"></a>
+<span class="sourceLineNo">186</span> assertEquals(expectedOff, alloc.offset);<a name="line.186"></a>
+<span class="sourceLineNo">187</span> assertTrue("Allocation overruns buffer",<a name="line.187"></a>
+<span class="sourceLineNo">188</span> alloc.offset + alloc.size <= alloc.alloc.capacity());<a name="line.188"></a>
+<span class="sourceLineNo">189</span> expectedOff += alloc.size;<a name="line.189"></a>
+<span class="sourceLineNo">190</span> }<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> /**<a name="line.194"></a>
+<span class="sourceLineNo">195</span> * Test frequent chunk retirement with chunk pool triggered by lots of threads, making sure<a name="line.195"></a>
+<span class="sourceLineNo">196</span> * there's no memory leak (HBASE-16195)<a name="line.196"></a>
+<span class="sourceLineNo">197</span> * @throws Exception if any error occurred<a name="line.197"></a>
+<span class="sourceLineNo">198</span> */<a name="line.198"></a>
+<span class="sourceLineNo">199</span> @Test<a name="line.199"></a>
+<span class="sourceLineNo">200</span> public void testLABChunkQueue() throws Exception {<a name="line.200"></a>
+<span class="sourceLineNo">201</span> ChunkCreator oldInstance = null;<a name="line.201"></a>
+<span class="sourceLineNo">202</span> try {<a name="line.202"></a>
+<span class="sourceLineNo">203</span> MemStoreLABImpl mslab = new MemStoreLABImpl();<a name="line.203"></a>
+<span class="sourceLineNo">204</span> // by default setting, there should be no chunks initialized in the pool<a name="line.204"></a>
+<span class="sourceLineNo">205</span> assertTrue(mslab.getPooledChunks().isEmpty());<a name="line.205"></a>
+<span class="sourceLineNo">206</span> oldInstance = ChunkCreator.INSTANCE;<a name="line.206"></a>
+<span class="sourceLineNo">207</span> ChunkCreator.INSTANCE = null;<a name="line.207"></a>
+<span class="sourceLineNo">208</span> // reset mslab with chunk pool<a name="line.208"></a>
+<span class="sourceLineNo">209</span> Configuration conf = HBaseConfiguration.create();<a name="line.209"></a>
+<span class="sourceLineNo">210</span> conf.setDouble(MemStoreLAB.CHUNK_POOL_MAXSIZE_KEY, 0.1);<a name="line.210"></a>
+<span class="sourceLineNo">211</span> // set chunk size to default max alloc size, so we could easily trigger chunk retirement<a name="line.211"></a>
+<span class="sourceLineNo">212</span> conf.setLong(MemStoreLABImpl.CHUNK_SIZE_KEY, MemStoreLABImpl.MAX_ALLOC_DEFAULT);<a name="line.212"></a>
+<span class="sourceLineNo">213</span> // reconstruct mslab<a name="line.213"></a>
+<span class="sourceLineNo">214</span> long globalMemStoreLimit = (long) (ManagementFactory.getMemoryMXBean().getHeapMemoryUsage()<a name="line.214"></a>
+<span class="sourceLineNo">215</span> .getMax() * MemorySizeUtil.getGlobalMemStoreHeapPercent(conf, false));<a name="line.215"></a>
+<span class="sourceLineNo">216</span> ChunkCreator.initialize(MemStoreLABImpl.MAX_ALLOC_DEFAULT, false,<a name="line.216"></a>
+<span class="sourceLineNo">217</span> globalMemStoreLimit, 0.1f, MemStoreLAB.POOL_INITIAL_SIZE_DEFAULT, null);<a name="line.217"></a>
+<span class="sourceLineNo">218</span> ChunkCreator.clearDisableFlag();<a name="line.218"></a>
+<span class="sourceLineNo">219</span> mslab = new MemStoreLABImpl(conf);<a name="line.219"></a>
+<span class="sourceLineNo">220</span> // launch multiple threads to trigger frequent chunk retirement<a name="line.220"></a>
+<span class="sourceLineNo">221</span> List<Thread> threads = new ArrayList<>();<a name="line.221"></a>
+<span class="sourceLineNo">222</span> final KeyValue kv = new KeyValue(Bytes.toBytes("r"), Bytes.toBytes("f"), Bytes.toBytes("q"),<a name="line.222"></a>
+<span class="sourceLineNo">223</span> new byte[MemStoreLABImpl.MAX_ALLOC_DEFAULT - 32]);<a name="line.223"></a>
+<span class="sourceLineNo">224</span> for (int i = 0; i < 10; i++) {<a name="line.224"></a>
+<span class="sourceLineNo">225</span> threads.add(getChunkQueueTestThread(mslab, "testLABChunkQueue-" + i, kv));<a name="line.225"></a>
<span class="sourceLineNo">226</span> }<a name="line.226"></a>
-<span class="sourceLineNo">227</span> boolean threadsRunning = true;<a name="line.227"></a>
-<span class="sourceLineNo">228</span> boolean alive = false;<a name="line.228"></a>
-<span class="sourceLineNo">229</span> while (threadsRunning) {<a name="line.229"></a>
-<span class="sourceLineNo">230</span> alive = false;<a name="line.230"></a>
-<span class="sourceLineNo">231</span> for (Thread thread : threads) {<a name="line.231"></a>
-<span class="sourceLineNo">232</span> if (thread.isAlive()) {<a name="line.232"></a>
-<span class="sourceLineNo">233</span> alive = true;<a name="line.233"></a>
-<span class="sourceLineNo">234</span> break;<a name="line.234"></a>
-<span class="sourceLineNo">235</span> }<a name="line.235"></a>
-<span class="sourceLineNo">236</span> }<a name="line.236"></a>
-<span class="sourceLineNo">237</span> if (!alive) {<a name="line.237"></a>
-<span class="sourceLineNo">238</span> threadsRunning = false;<a name="line.238"></a>
-<span class="sourceLineNo">239</span> }<a name="line.239"></a>
-<span class="sourceLineNo">240</span> }<a name="line.240"></a>
-<span class="sourceLineNo">241</span> // none of the chunkIds would have been returned back<a name="line.241"></a>
-<span class="sourceLineNo">242</span> assertTrue("All the chunks must have been cleared", ChunkCreator.INSTANCE.size() != 0);<a name="line.242"></a>
-<span class="sourceLineNo">243</span> // close the mslab<a name="line.243"></a>
-<span class="sourceLineNo">244</span> mslab.close();<a name="line.244"></a>
-<span class="sourceLineNo">245</span> // make sure all chunks reclaimed or removed from chunk queue<a name="line.245"></a>
-<span class="sourceLineNo">246</span> int queueLength = mslab.getPooledChunks().size();<a name="line.246"></a>
-<span class="sourceLineNo">247</span> assertTrue("All chunks in chunk queue should be reclaimed or removed"<a name="line.247"></a>
-<span class="sourceLineNo">248</span> + " after mslab closed but actually: " + queueLength,<a name="line.248"></a>
-<span class="sourceLineNo">249</span> queueLength == 0);<a name="line.249"></a>
-<span class="sourceLineNo">250</span> } finally {<a name="line.250"></a>
-<span class="sourceLineNo">251</span> ChunkCreator.INSTANCE = oldInstance;<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> private Thread getChunkQueueTestThread(final MemStoreLABImpl mslab, String threadName,<a name="line.255"></a>
-<span class="sourceLineNo">256</span> Cell cellToCopyInto) {<a name="line.256"></a>
-<span class="sourceLineNo">257</span> Thread thread = new Thread() {<a name="line.257"></a>
-<span class="sourceLineNo">258</span> volatile boolean stopped = false;<a name="line.258"></a>
-<span class="sourceLineNo">259</span><a name="line.259"></a>
-<span class="sourceLineNo">260</span> @Override<a name="line.260"></a>
-<span class="sourceLineNo">261</span> public void run() {<a name="line.261"></a>
-<span class="sourceLineNo">262</span> while (!stopped) {<a name="line.262"></a>
-<span class="sourceLineNo">263</span> // keep triggering chunk retirement<a name="line.263"></a>
-<span class="sourceLineNo">264</span> mslab.copyCellInto(cellToCopyInto);<a name="line.264"></a>
-<span class="sourceLineNo">265</span> }<a name="line.265"></a>
-<span class="sourceLineNo">266</span> }<a name="line.266"></a>
+<span class="sourceLineNo">227</span> for (Thread thread : threads) {<a name="line.227"></a>
+<span class="sourceLineNo">228</span> thread.start();<a name="line.228"></a>
+<span class="sourceLineNo">229</span> }<a name="line.229"></a>
+<span class="sourceLineNo">230</span> // let it run for some time<a name="line.230"></a>
+<span class="sourceLineNo">231</span> Thread.sleep(1000);<a name="line.231"></a>
+<span class="sourceLineNo">232</span> for (Thread thread : threads) {<a name="line.232"></a>
+<span class="sourceLineNo">233</span> thread.interrupt();<a name="line.233"></a>
+<span class="sourceLineNo">234</span> }<a name="line.234"></a>
+<span class="sourceLineNo">235</span> boolean threadsRunning = true;<a name="line.235"></a>
+<span class="sourceLineNo">236</span> boolean alive = false;<a name="line.236"></a>
+<span class="sourceLineNo">237</span> while (threadsRunning) {<a name="line.237"></a>
+<span class="sourceLineNo">238</span> alive = false;<a name="line.238"></a>
+<span class="sourceLineNo">239</span> for (Thread thread : threads) {<a name="line.239"></a>
+<span class="sourceLineNo">240</span> if (thread.isAlive()) {<a name="line.240"></a>
+<span class="sourceLineNo">241</span> alive = true;<a name="line.241"></a>
+<span class="sourceLineNo">242</span> break;<a name="line.242"></a>
+<span class="sourceLineNo">243</span> }<a name="line.243"></a>
+<span class="sourceLineNo">244</span> }<a name="line.244"></a>
+<span class="sourceLineNo">245</span> if (!alive) {<a name="line.245"></a>
+<span class="sourceLineNo">246</span> threadsRunning = false;<a name="line.246"></a>
+<span class="sourceLineNo">247</span> }<a name="line.247"></a>
+<span class="sourceLineNo">248</span> }<a name="line.248"></a>
+<span class="sourceLineNo">249</span> // none of the chunkIds would have been returned back<a name="line.249"></a>
+<span class="sourceLineNo">250</span> assertTrue("All the chunks must have been cleared", ChunkCreator.INSTANCE.size() != 0);<a name="line.250"></a>
+<span class="sourceLineNo">251</span> // close the mslab<a name="line.251"></a>
+<span class="sourceLineNo">252</span> mslab.close();<a name="line.252"></a>
+<span class="sourceLineNo">253</span> // make sure all chunks reclaimed or removed from chunk queue<a name="line.253"></a>
+<span class="sourceLineNo">254</span> int queueLength = mslab.getPooledChunks().size();<a name="line.254"></a>
+<span class="sourceLineNo">255</span> assertTrue("All chunks in chunk queue should be reclaimed or removed"<a name="line.255"></a>
+<span class="sourceLineNo">256</span> + " after mslab closed but actually: " + queueLength,<a name="line.256"></a>
+<span class="sourceLineNo">257</span> queueLength == 0);<a name="line.257"></a>
+<span class="sourceLineNo">258</span> } finally {<a name="line.258"></a>
+<span class="sourceLineNo">259</span> ChunkCreator.INSTANCE = oldInstance;<a name="line.259"></a>
+<span class="sourceLineNo">260</span> }<a name="line.260"></a>
+<span class="sourceLineNo">261</span> }<a name="line.261"></a>
+<span class="sourceLineNo">262</span><a name="line.262"></a>
+<span class="sourceLineNo">263</span> private Thread getChunkQueueTestThread(final MemStoreLABImpl mslab, String threadName,<a name="line.263"></a>
+<span class="sourceLineNo">264</span> Cell cellToCopyInto) {<a name="line.264"></a>
+<span class="sourceLineNo">265</span> Thread thread = new Thread() {<a name="line.265"></a>
+<span class="sourceLineNo">266</span> volatile boolean stopped = false;<a name="line.266"></a>
<span class="sourceLineNo">267</span><a name="line.267"></a>
<span class="sourceLineNo">268</span> @Override<a name="line.268"></a>
-<span class="sourceLineNo">269</span> public void interrupt() {<a name="line.269"></a>
-<span class="sourceLineNo">270</span> this.stopped = true;<a name="line.270"></a>
-<span class="sourceLineNo">271</span> }<a name="line.271"></a>
-<span class="sourceLineNo">272</span> };<a name="line.272"></a>
-<span class="sourceLineNo">273</span> thread.setName(threadName);<a name="line.273"></a>
-<span class="sourceLineNo">274</span> thread.setDaemon(true);<a name="line.274"></a>
-<span class="sourceLineNo">275</span> return thread;<a name="line.275"></a>
-<span class="sourceLineNo">276</span> }<a name="line.276"></a>
-<span class="sourceLineNo">277</span><a name="line.277"></a>
-<span class="sourceLineNo">278</span> private static class AllocRecord implements Comparable<AllocRecord>{<a name="line.278"></a>
-<span class="sourceLineNo">279</span> private final ByteBuffer alloc;<a name="line.279"></a>
-<span class="sourceLineNo">280</span> private final int offset;<a name="line.280"></a>
-<span class="sourceLineNo">281</span> private final int size;<a name="line.281"></a>
-<span class="sourceLineNo">282</span><a name="line.282"></a>
-<span class="sourceLineNo">283</span> public AllocRecord(ByteBuffer alloc, int offset, int size) {<a name="line.283"></a>
-<span class="sourceLineNo">284</span> super();<a name="line.284"></a>
-<span class="sourceLineNo">285</span> this.alloc = alloc;<a name="line.285"></a>
-<span class="sourceLineNo">286</span> this.offset = offset;<a name="line.286"></a>
-<span class="sourceLineNo">287</span> this.size = size;<a name="line.287"></a>
-<span class="sourceLineNo">288</span> }<a name="line.288"></a>
-<span class="sourceLineNo">289</span><a name="line.289"></a>
-<span class="sourceLineNo">290</span> @Override<a name="line.290"></a>
-<span class="sourceLineNo">291</span> public int compareTo(AllocRecord e) {<a name="line.291"></a>
-<span class="sourceLineNo">292</span> if (alloc != e.alloc) {<a name="line.292"></a>
-<span class="sourceLineNo">293</span> throw new RuntimeException("Can only compare within a particular array");<a name="line.293"></a>
-<span class="sourceLineNo">294</span> }<a name="line.294"></a>
-<span class="sourceLineNo">295</span> return Ints.compare(this.offset, e.offset);<a name="line.295"></a>
+<span class="sourceLineNo">269</span> public void run() {<a name="line.269"></a>
+<span class="sourceLineNo">270</span> while (!stopped) {<a name="line.270"></a>
+<span class="sourceLineNo">271</span> // keep triggering chunk retirement<a name="line.271"></a>
+<span class="sourceLineNo">272</span> mslab.copyCellInto(cellToCopyInto);<a name="line.272"></a>
+<span class="sourceLineNo">273</span> }<a name="line.273"></a>
+<span class="sourceLineNo">274</span> }<a name="line.274"></a>
+<span class="sourceLineNo">275</span><a name="line.275"></a>
+<span class="sourceLineNo">276</span> @Override<a name="line.276"></a>
+<span class="sourceLineNo">277</span> public void interrupt() {<a name="line.277"></a>
+<span class="sourceLineNo">278</span> this.stopped = true;<a name="line.278"></a>
+<span class="sourceLineNo">279</span> }<a name="line.279"></a>
+<span class="sourceLineNo">280</span> };<a name="line.280"></a>
+<span class="sourceLineNo">281</span> thread.setName(threadName);<a name="line.281"></a>
+<span class="sourceLineNo">282</span> thread.setDaemon(true);<a name="line.282"></a>
+<span class="sourceLineNo">283</span> return thread;<a name="line.283"></a>
+<span class="sourceLineNo">284</span> }<a name="line.284"></a>
+<span class="sourceLineNo">285</span><a name="line.285"></a>
+<span class="sourceLineNo">286</span> private static class AllocRecord implements Comparable<AllocRecord>{<a name="line.286"></a>
+<span class="sourceLineNo">287</span> private final ByteBuffer alloc;<a name="line.287"></a>
+<span class="sourceLineNo">288</span> private final int offset;<a name="line.288"></a>
+<span class="sourceLineNo">289</span> private final int size;<a name="line.289"></a>
+<span class="sourceLineNo">290</span><a name="line.290"></a>
+<span class="sourceLineNo">291</span> public AllocRecord(ByteBuffer alloc, int offset, int size) {<a name="line.291"></a>
+<span class="sourceLineNo">292</span> super();<a name="line.292"></a>
+<span class="sourceLineNo">293</span> this.alloc = alloc;<a name="line.293"></a>
+<span class="sourceLineNo">294</span> this.offset = offset;<a name="line.294"></a>
+<span class="sourceLineNo">295</span> this.size = size;<a name="line.295"></a>
<span class="sourceLineNo">296</span> }<a name="line.296"></a>
-<span class="sourceLineNo">297</span> <a name="line.297"></a>
+<span class="sourceLineNo">297</span><a name="line.297"></a>
<span class="sourceLineNo">298</span> @Override<a name="line.298"></a>
-<span class="sourceLineNo">299</span> public String toString() {<a name="line.299"></a>
-<span class="sourceLineNo">300</span> return "AllocRecord(offset=" + this.offset + ", size=" + size + ")";<a name="line.300"></a>
-<span class="sourceLineNo">301</span> }<a name="line.301"></a>
-<span class="sourceLineNo">302</span> }<a name="line.302"></a>
-<span class="sourceLineNo">303</span>}<a name="line.303"></a>
-<span class="sourceLineNo">304</span><a name="line.304"></a>
+<span class="sourceLineNo">299</span> public int compareTo(AllocRecord e) {<a name="line.299"></a>
+<span class="sourceLineNo">300</span> if (alloc != e.alloc) {<a name="line.300"></a>
+<span class="sourceLineNo">301</span> throw new RuntimeException("Can only compare within a particular array");<a name="line.301"></a>
+<span class="sourceLineNo">302</span> }<a name="line.302"></a>
+<span class="sourceLineNo">303</span> return Ints.compare(this.offset, e.offset);<a name="line.303"></a>
+<span class="sourceLineNo">304</span> }<a name="line.304"></a>
+<span class="sourceLineNo">305</span> <a name="line.305"></a>
+<span class="sourceLineNo">306</span> @Override<a name="line.306"></a>
+<span class="sourceLineNo">307</span> public String toString() {<a name="line.307"></a>
+<span class="sourceLineNo">308</span> return "AllocRecord(offset=" + this.offset + ", size=" + size + ")";<a name="line.308"></a>
+<span class="sourceLineNo">309</span> }<a name="line.309"></a>
+<span class="sourceLineNo">310</span> }<a name="line.310"></a>
+<span class="sourceLineNo">311</span>}<a name="line.311"></a>
+<span class="sourceLineNo">312</span><a name="line.312"></a>