http://git-wip-us.apache.org/repos/asf/hbase-site/blob/1ee65067/devapidocs/src-html/org/apache/hadoop/hbase/client/AsyncNonMetaRegionLocator.TableCache.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/client/AsyncNonMetaRegionLocator.TableCache.html b/devapidocs/src-html/org/apache/hadoop/hbase/client/AsyncNonMetaRegionLocator.TableCache.html index 63b8c53..88e70e2 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/client/AsyncNonMetaRegionLocator.TableCache.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/client/AsyncNonMetaRegionLocator.TableCache.html @@ -25,460 +25,470 @@ <span class="sourceLineNo">017</span> */<a name="line.17"></a> <span class="sourceLineNo">018</span>package org.apache.hadoop.hbase.client;<a name="line.18"></a> <span class="sourceLineNo">019</span><a name="line.19"></a> -<span class="sourceLineNo">020</span>import static org.apache.hadoop.hbase.HConstants.CATALOG_FAMILY;<a name="line.20"></a> -<span class="sourceLineNo">021</span>import static org.apache.hadoop.hbase.HConstants.NINES;<a name="line.21"></a> -<span class="sourceLineNo">022</span>import static org.apache.hadoop.hbase.HConstants.ZEROES;<a name="line.22"></a> -<span class="sourceLineNo">023</span>import static org.apache.hadoop.hbase.TableName.META_TABLE_NAME;<a name="line.23"></a> -<span class="sourceLineNo">024</span>import static org.apache.hadoop.hbase.client.ConnectionUtils.createClosestRowAfter;<a name="line.24"></a> -<span class="sourceLineNo">025</span>import static org.apache.hadoop.hbase.client.ConnectionUtils.isEmptyStopRow;<a name="line.25"></a> -<span class="sourceLineNo">026</span>import static org.apache.hadoop.hbase.client.RegionInfo.createRegionName;<a name="line.26"></a> -<span class="sourceLineNo">027</span>import static org.apache.hadoop.hbase.util.Bytes.BYTES_COMPARATOR;<a name="line.27"></a> -<span class="sourceLineNo">028</span>import static org.apache.hadoop.hbase.util.CollectionUtils.computeIfAbsent;<a name="line.28"></a> -<span class="sourceLineNo">029</span><a name="line.29"></a> -<span class="sourceLineNo">030</span>import java.io.IOException;<a name="line.30"></a> -<span class="sourceLineNo">031</span>import java.util.Arrays;<a name="line.31"></a> -<span class="sourceLineNo">032</span>import java.util.HashSet;<a name="line.32"></a> -<span class="sourceLineNo">033</span>import java.util.Iterator;<a name="line.33"></a> -<span class="sourceLineNo">034</span>import java.util.LinkedHashMap;<a name="line.34"></a> -<span class="sourceLineNo">035</span>import java.util.List;<a name="line.35"></a> -<span class="sourceLineNo">036</span>import java.util.Map;<a name="line.36"></a> -<span class="sourceLineNo">037</span>import java.util.Optional;<a name="line.37"></a> -<span class="sourceLineNo">038</span>import java.util.Set;<a name="line.38"></a> -<span class="sourceLineNo">039</span>import java.util.concurrent.CompletableFuture;<a name="line.39"></a> -<span class="sourceLineNo">040</span>import java.util.concurrent.ConcurrentHashMap;<a name="line.40"></a> -<span class="sourceLineNo">041</span>import java.util.concurrent.ConcurrentMap;<a name="line.41"></a> -<span class="sourceLineNo">042</span>import java.util.concurrent.ConcurrentNavigableMap;<a name="line.42"></a> -<span class="sourceLineNo">043</span>import java.util.concurrent.ConcurrentSkipListMap;<a name="line.43"></a> -<span class="sourceLineNo">044</span><a name="line.44"></a> -<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.DoNotRetryIOException;<a name="line.45"></a> -<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.HRegionLocation;<a name="line.46"></a> -<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.MetaTableAccessor;<a name="line.47"></a> -<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.RegionLocations;<a name="line.48"></a> -<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.TableName;<a name="line.49"></a> -<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.TableNotFoundException;<a name="line.50"></a> -<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.51"></a> -<span class="sourceLineNo">052</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.52"></a> -<span class="sourceLineNo">053</span>import org.slf4j.Logger;<a name="line.53"></a> -<span class="sourceLineNo">054</span>import org.slf4j.LoggerFactory;<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> * The asynchronous locator for regions other than meta.<a name="line.57"></a> -<span class="sourceLineNo">058</span> */<a name="line.58"></a> -<span class="sourceLineNo">059</span>@InterfaceAudience.Private<a name="line.59"></a> -<span class="sourceLineNo">060</span>class AsyncNonMetaRegionLocator {<a name="line.60"></a> -<span class="sourceLineNo">061</span><a name="line.61"></a> -<span class="sourceLineNo">062</span> private static final Logger LOG = LoggerFactory.getLogger(AsyncNonMetaRegionLocator.class);<a name="line.62"></a> -<span class="sourceLineNo">063</span><a name="line.63"></a> -<span class="sourceLineNo">064</span> static final String MAX_CONCURRENT_LOCATE_REQUEST_PER_TABLE =<a name="line.64"></a> -<span class="sourceLineNo">065</span> "hbase.client.meta.max.concurrent.locate.per.table";<a name="line.65"></a> -<span class="sourceLineNo">066</span><a name="line.66"></a> -<span class="sourceLineNo">067</span> private static final int DEFAULT_MAX_CONCURRENT_LOCATE_REQUEST_PER_TABLE = 8;<a name="line.67"></a> -<span class="sourceLineNo">068</span><a name="line.68"></a> -<span class="sourceLineNo">069</span> private final AsyncConnectionImpl conn;<a name="line.69"></a> -<span class="sourceLineNo">070</span><a name="line.70"></a> -<span class="sourceLineNo">071</span> private final int maxConcurrentLocateRequestPerTable;<a name="line.71"></a> -<span class="sourceLineNo">072</span><a name="line.72"></a> -<span class="sourceLineNo">073</span> private final ConcurrentMap<TableName, TableCache> cache = new ConcurrentHashMap<>();<a name="line.73"></a> -<span class="sourceLineNo">074</span><a name="line.74"></a> -<span class="sourceLineNo">075</span> private static final class LocateRequest {<a name="line.75"></a> -<span class="sourceLineNo">076</span><a name="line.76"></a> -<span class="sourceLineNo">077</span> public final byte[] row;<a name="line.77"></a> -<span class="sourceLineNo">078</span><a name="line.78"></a> -<span class="sourceLineNo">079</span> public final RegionLocateType locateType;<a name="line.79"></a> -<span class="sourceLineNo">080</span><a name="line.80"></a> -<span class="sourceLineNo">081</span> public LocateRequest(byte[] row, RegionLocateType locateType) {<a name="line.81"></a> -<span class="sourceLineNo">082</span> this.row = row;<a name="line.82"></a> -<span class="sourceLineNo">083</span> this.locateType = locateType;<a name="line.83"></a> -<span class="sourceLineNo">084</span> }<a name="line.84"></a> -<span class="sourceLineNo">085</span><a name="line.85"></a> -<span class="sourceLineNo">086</span> @Override<a name="line.86"></a> -<span class="sourceLineNo">087</span> public int hashCode() {<a name="line.87"></a> -<span class="sourceLineNo">088</span> return Bytes.hashCode(row) ^ locateType.hashCode();<a name="line.88"></a> -<span class="sourceLineNo">089</span> }<a name="line.89"></a> -<span class="sourceLineNo">090</span><a name="line.90"></a> -<span class="sourceLineNo">091</span> @Override<a name="line.91"></a> -<span class="sourceLineNo">092</span> public boolean equals(Object obj) {<a name="line.92"></a> -<span class="sourceLineNo">093</span> if (obj == null || obj.getClass() != LocateRequest.class) {<a name="line.93"></a> -<span class="sourceLineNo">094</span> return false;<a name="line.94"></a> -<span class="sourceLineNo">095</span> }<a name="line.95"></a> -<span class="sourceLineNo">096</span> LocateRequest that = (LocateRequest) obj;<a name="line.96"></a> -<span class="sourceLineNo">097</span> return locateType.equals(that.locateType) && Bytes.equals(row, that.row);<a name="line.97"></a> -<span class="sourceLineNo">098</span> }<a name="line.98"></a> -<span class="sourceLineNo">099</span> }<a name="line.99"></a> -<span class="sourceLineNo">100</span><a name="line.100"></a> -<span class="sourceLineNo">101</span> private static final class TableCache {<a name="line.101"></a> -<span class="sourceLineNo">102</span><a name="line.102"></a> -<span class="sourceLineNo">103</span> public final ConcurrentNavigableMap<byte[], HRegionLocation> cache =<a name="line.103"></a> -<span class="sourceLineNo">104</span> new ConcurrentSkipListMap<>(BYTES_COMPARATOR);<a name="line.104"></a> -<span class="sourceLineNo">105</span><a name="line.105"></a> -<span class="sourceLineNo">106</span> public final Set<LocateRequest> pendingRequests = new HashSet<>();<a name="line.106"></a> -<span class="sourceLineNo">107</span><a name="line.107"></a> -<span class="sourceLineNo">108</span> public final Map<LocateRequest, CompletableFuture<HRegionLocation>> allRequests =<a name="line.108"></a> -<span class="sourceLineNo">109</span> new LinkedHashMap<>();<a name="line.109"></a> -<span class="sourceLineNo">110</span><a name="line.110"></a> -<span class="sourceLineNo">111</span> public boolean hasQuota(int max) {<a name="line.111"></a> -<span class="sourceLineNo">112</span> return pendingRequests.size() < max;<a name="line.112"></a> -<span class="sourceLineNo">113</span> }<a name="line.113"></a> -<span class="sourceLineNo">114</span><a name="line.114"></a> -<span class="sourceLineNo">115</span> public boolean isPending(LocateRequest req) {<a name="line.115"></a> -<span class="sourceLineNo">116</span> return pendingRequests.contains(req);<a name="line.116"></a> -<span class="sourceLineNo">117</span> }<a name="line.117"></a> -<span class="sourceLineNo">118</span><a name="line.118"></a> -<span class="sourceLineNo">119</span> public void send(LocateRequest req) {<a name="line.119"></a> -<span class="sourceLineNo">120</span> pendingRequests.add(req);<a name="line.120"></a> -<span class="sourceLineNo">121</span> }<a name="line.121"></a> -<span class="sourceLineNo">122</span><a name="line.122"></a> -<span class="sourceLineNo">123</span> public Optional<LocateRequest> getCandidate() {<a name="line.123"></a> -<span class="sourceLineNo">124</span> return allRequests.keySet().stream().filter(r -> !isPending(r)).findFirst();<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 void clearCompletedRequests(Optional<HRegionLocation> location) {<a name="line.127"></a> -<span class="sourceLineNo">128</span> for (Iterator<Map.Entry<LocateRequest, CompletableFuture<HRegionLocation>>> iter =<a name="line.128"></a> -<span class="sourceLineNo">129</span> allRequests.entrySet().iterator(); iter.hasNext();) {<a name="line.129"></a> -<span class="sourceLineNo">130</span> Map.Entry<LocateRequest, CompletableFuture<HRegionLocation>> entry = iter.next();<a name="line.130"></a> -<span class="sourceLineNo">131</span> if (tryComplete(entry.getKey(), entry.getValue(), location)) {<a name="line.131"></a> -<span class="sourceLineNo">132</span> iter.remove();<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> }<a name="line.135"></a> -<span class="sourceLineNo">136</span><a name="line.136"></a> -<span class="sourceLineNo">137</span> private boolean tryComplete(LocateRequest req, CompletableFuture<HRegionLocation> future,<a name="line.137"></a> -<span class="sourceLineNo">138</span> Optional<HRegionLocation> location) {<a name="line.138"></a> -<span class="sourceLineNo">139</span> if (future.isDone()) {<a name="line.139"></a> -<span class="sourceLineNo">140</span> return true;<a name="line.140"></a> -<span class="sourceLineNo">141</span> }<a name="line.141"></a> -<span class="sourceLineNo">142</span> if (!location.isPresent()) {<a name="line.142"></a> -<span class="sourceLineNo">143</span> return false;<a name="line.143"></a> -<span class="sourceLineNo">144</span> }<a name="line.144"></a> -<span class="sourceLineNo">145</span> HRegionLocation loc = location.get();<a name="line.145"></a> -<span class="sourceLineNo">146</span> boolean completed;<a name="line.146"></a> -<span class="sourceLineNo">147</span> if (req.locateType.equals(RegionLocateType.BEFORE)) {<a name="line.147"></a> -<span class="sourceLineNo">148</span> // for locating the row before current row, the common case is to find the previous region<a name="line.148"></a> -<span class="sourceLineNo">149</span> // in reverse scan, so we check the endKey first. In general, the condition should be<a name="line.149"></a> -<span class="sourceLineNo">150</span> // startKey < req.row and endKey >= req.row. Here we split it to endKey == req.row ||<a name="line.150"></a> -<span class="sourceLineNo">151</span> // (endKey > req.row && startKey < req.row). The two conditions are equal since startKey <<a name="line.151"></a> -<span class="sourceLineNo">152</span> // endKey.<a name="line.152"></a> -<span class="sourceLineNo">153</span> int c = Bytes.compareTo(loc.getRegion().getEndKey(), req.row);<a name="line.153"></a> -<span class="sourceLineNo">154</span> completed =<a name="line.154"></a> -<span class="sourceLineNo">155</span> c == 0 || (c > 0 && Bytes.compareTo(loc.getRegion().getStartKey(), req.row) < 0);<a name="line.155"></a> -<span class="sourceLineNo">156</span> } else {<a name="line.156"></a> -<span class="sourceLineNo">157</span> completed = loc.getRegion().containsRow(req.row);<a name="line.157"></a> -<span class="sourceLineNo">158</span> }<a name="line.158"></a> -<span class="sourceLineNo">159</span> if (completed) {<a name="line.159"></a> -<span class="sourceLineNo">160</span> future.complete(loc);<a name="line.160"></a> -<span class="sourceLineNo">161</span> return true;<a name="line.161"></a> -<span class="sourceLineNo">162</span> } else {<a name="line.162"></a> -<span class="sourceLineNo">163</span> return false;<a name="line.163"></a> -<span class="sourceLineNo">164</span> }<a name="line.164"></a> -<span class="sourceLineNo">165</span> }<a name="line.165"></a> -<span class="sourceLineNo">166</span> }<a name="line.166"></a> -<span class="sourceLineNo">167</span><a name="line.167"></a> -<span class="sourceLineNo">168</span> AsyncNonMetaRegionLocator(AsyncConnectionImpl conn) {<a name="line.168"></a> -<span class="sourceLineNo">169</span> this.conn = conn;<a name="line.169"></a> -<span class="sourceLineNo">170</span> this.maxConcurrentLocateRequestPerTable = conn.getConfiguration().getInt(<a name="line.170"></a> -<span class="sourceLineNo">171</span> MAX_CONCURRENT_LOCATE_REQUEST_PER_TABLE, DEFAULT_MAX_CONCURRENT_LOCATE_REQUEST_PER_TABLE);<a name="line.171"></a> -<span class="sourceLineNo">172</span> }<a name="line.172"></a> -<span class="sourceLineNo">173</span><a name="line.173"></a> -<span class="sourceLineNo">174</span> private TableCache getTableCache(TableName tableName) {<a name="line.174"></a> -<span class="sourceLineNo">175</span> return computeIfAbsent(cache, tableName, TableCache::new);<a name="line.175"></a> -<span class="sourceLineNo">176</span> }<a name="line.176"></a> -<span class="sourceLineNo">177</span><a name="line.177"></a> -<span class="sourceLineNo">178</span> private void removeFromCache(HRegionLocation loc) {<a name="line.178"></a> -<span class="sourceLineNo">179</span> TableCache tableCache = cache.get(loc.getRegion().getTable());<a name="line.179"></a> -<span class="sourceLineNo">180</span> if (tableCache == null) {<a name="line.180"></a> -<span class="sourceLineNo">181</span> return;<a name="line.181"></a> -<span class="sourceLineNo">182</span> }<a name="line.182"></a> -<span class="sourceLineNo">183</span> tableCache.cache.computeIfPresent(loc.getRegion().getStartKey(), (k, oldLoc) -> {<a name="line.183"></a> -<span class="sourceLineNo">184</span> if (oldLoc.getSeqNum() > loc.getSeqNum() ||<a name="line.184"></a> -<span class="sourceLineNo">185</span> !oldLoc.getServerName().equals(loc.getServerName())) {<a name="line.185"></a> -<span class="sourceLineNo">186</span> return oldLoc;<a name="line.186"></a> -<span class="sourceLineNo">187</span> }<a name="line.187"></a> -<span class="sourceLineNo">188</span> return null;<a name="line.188"></a> -<span class="sourceLineNo">189</span> });<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> // return whether we add this loc to cache<a name="line.192"></a> -<span class="sourceLineNo">193</span> private boolean addToCache(TableCache tableCache, HRegionLocation loc) {<a name="line.193"></a> -<span class="sourceLineNo">194</span> if (LOG.isTraceEnabled()) {<a name="line.194"></a> -<span class="sourceLineNo">195</span> LOG.trace("Try adding " + loc + " to cache");<a name="line.195"></a> -<span class="sourceLineNo">196</span> }<a name="line.196"></a> -<span class="sourceLineNo">197</span> byte[] startKey = loc.getRegion().getStartKey();<a name="line.197"></a> -<span class="sourceLineNo">198</span> HRegionLocation oldLoc = tableCache.cache.putIfAbsent(startKey, loc);<a name="line.198"></a> -<span class="sourceLineNo">199</span> if (oldLoc == null) {<a name="line.199"></a> -<span class="sourceLineNo">200</span> return true;<a name="line.200"></a> -<span class="sourceLineNo">201</span> }<a name="line.201"></a> -<span class="sourceLineNo">202</span> if (oldLoc.getSeqNum() > loc.getSeqNum() ||<a name="line.202"></a> -<span class="sourceLineNo">203</span> oldLoc.getServerName().equals(loc.getServerName())) {<a name="line.203"></a> -<span class="sourceLineNo">204</span> if (LOG.isTraceEnabled()) {<a name="line.204"></a> -<span class="sourceLineNo">205</span> LOG.trace("Will not add " + loc + " to cache because the old value " + oldLoc +<a name="line.205"></a> -<span class="sourceLineNo">206</span> " is newer than us or has the same server name");<a name="line.206"></a> -<span class="sourceLineNo">207</span> }<a name="line.207"></a> -<span class="sourceLineNo">208</span> return false;<a name="line.208"></a> -<span class="sourceLineNo">209</span> }<a name="line.209"></a> -<span class="sourceLineNo">210</span> return loc == tableCache.cache.compute(startKey, (k, oldValue) -> {<a name="line.210"></a> -<span class="sourceLineNo">211</span> if (oldValue == null || oldValue.getSeqNum() <= loc.getSeqNum()) {<a name="line.211"></a> -<span class="sourceLineNo">212</span> return loc;<a name="line.212"></a> -<span class="sourceLineNo">213</span> }<a name="line.213"></a> -<span class="sourceLineNo">214</span> if (LOG.isTraceEnabled()) {<a name="line.214"></a> -<span class="sourceLineNo">215</span> LOG.trace("Will not add " + loc + " to cache because the old value " + oldValue +<a name="line.215"></a> -<span class="sourceLineNo">216</span> " is newer than us or has the same server name." +<a name="line.216"></a> -<span class="sourceLineNo">217</span> " Maybe it is updated before we replace it");<a name="line.217"></a> -<span class="sourceLineNo">218</span> }<a name="line.218"></a> -<span class="sourceLineNo">219</span> return oldValue;<a name="line.219"></a> -<span class="sourceLineNo">220</span> });<a name="line.220"></a> -<span class="sourceLineNo">221</span> }<a name="line.221"></a> -<span class="sourceLineNo">222</span><a name="line.222"></a> -<span class="sourceLineNo">223</span> @edu.umd.cs.findbugs.annotations.SuppressWarnings(value = "UPM_UNCALLED_PRIVATE_METHOD",<a name="line.223"></a> -<span class="sourceLineNo">224</span> justification = "Called by lambda expression")<a name="line.224"></a> -<span class="sourceLineNo">225</span> private void addToCache(HRegionLocation loc) {<a name="line.225"></a> -<span class="sourceLineNo">226</span> addToCache(getTableCache(loc.getRegion().getTable()), loc);<a name="line.226"></a> -<span class="sourceLineNo">227</span> if (LOG.isTraceEnabled()) {<a name="line.227"></a> -<span class="sourceLineNo">228</span> LOG.trace("Try adding " + loc + " to cache");<a name="line.228"></a> -<span class="sourceLineNo">229</span> }<a name="line.229"></a> -<span class="sourceLineNo">230</span> }<a name="line.230"></a> -<span class="sourceLineNo">231</span><a name="line.231"></a> -<span class="sourceLineNo">232</span> private void complete(TableName tableName, LocateRequest req, HRegionLocation loc,<a name="line.232"></a> -<span class="sourceLineNo">233</span> Throwable error) {<a name="line.233"></a> -<span class="sourceLineNo">234</span> if (error != null) {<a name="line.234"></a> -<span class="sourceLineNo">235</span> LOG.warn("Failed to locate region in '" + tableName + "', row='" +<a name="line.235"></a> -<span class="sourceLineNo">236</span> Bytes.toStringBinary(req.row) + "', locateType=" + req.locateType, error);<a name="line.236"></a> -<span class="sourceLineNo">237</span> }<a name="line.237"></a> -<span class="sourceLineNo">238</span> Optional<LocateRequest> toSend = Optional.empty();<a name="line.238"></a> -<span class="sourceLineNo">239</span> TableCache tableCache = getTableCache(tableName);<a name="line.239"></a> -<span class="sourceLineNo">240</span> if (loc != null) {<a name="line.240"></a> -<span class="sourceLineNo">241</span> if (!addToCache(tableCache, loc)) {<a name="line.241"></a> -<span class="sourceLineNo">242</span> // someone is ahead of us.<a name="line.242"></a> -<span class="sourceLineNo">243</span> synchronized (tableCache) {<a name="line.243"></a> -<span class="sourceLineNo">244</span> tableCache.pendingRequests.remove(req);<a name="line.244"></a> -<span class="sourceLineNo">245</span> tableCache.clearCompletedRequests(Optional.empty());<a name="line.245"></a> -<span class="sourceLineNo">246</span> // Remove a complete locate request in a synchronized block, so the table cache must have<a name="line.246"></a> -<span class="sourceLineNo">247</span> // quota to send a candidate request.<a name="line.247"></a> -<span class="sourceLineNo">248</span> toSend = tableCache.getCandidate();<a name="line.248"></a> -<span class="sourceLineNo">249</span> toSend.ifPresent(r -> tableCache.send(r));<a name="line.249"></a> -<span class="sourceLineNo">250</span> }<a name="line.250"></a> -<span class="sourceLineNo">251</span> toSend.ifPresent(r -> locateInMeta(tableName, r));<a name="line.251"></a> -<span class="sourceLineNo">252</span> return;<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> synchronized (tableCache) {<a name="line.255"></a> -<span class="sourceLineNo">256</span> tableCache.pendingRequests.remove(req);<a name="line.256"></a> -<span class="sourceLineNo">257</span> if (error instanceof DoNotRetryIOException) {<a name="line.257"></a> -<span class="sourceLineNo">258</span> CompletableFuture<?> future = tableCache.allRequests.remove(req);<a name="line.258"></a> -<span class="sourceLineNo">259</span> if (future != null) {<a name="line.259"></a> -<span class="sourceLineNo">260</span> future.completeExceptionally(error);<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> tableCache.clearCompletedRequests(Optional.ofNullable(loc));<a name="line.263"></a> -<span class="sourceLineNo">264</span> // Remove a complete locate request in a synchronized block, so the table cache must have<a name="line.264"></a> -<span class="sourceLineNo">265</span> // quota to send a candidate request.<a name="line.265"></a> -<span class="sourceLineNo">266</span> toSend = tableCache.getCandidate();<a name="line.266"></a> -<span class="sourceLineNo">267</span> toSend.ifPresent(r -> tableCache.send(r));<a name="line.267"></a> -<span class="sourceLineNo">268</span> }<a name="line.268"></a> -<span class="sourceLineNo">269</span> toSend.ifPresent(r -> locateInMeta(tableName, r));<a name="line.269"></a> -<span class="sourceLineNo">270</span> }<a name="line.270"></a> -<span class="sourceLineNo">271</span><a name="line.271"></a> -<span class="sourceLineNo">272</span> private void onScanComplete(TableName tableName, LocateRequest req, List<Result> results,<a name="line.272"></a> +<span class="sourceLineNo">020</span>import static org.apache.hadoop.hbase.HConstants.NINES;<a name="line.20"></a> +<span class="sourceLineNo">021</span>import static org.apache.hadoop.hbase.HConstants.ZEROES;<a name="line.21"></a> +<span class="sourceLineNo">022</span>import static org.apache.hadoop.hbase.TableName.META_TABLE_NAME;<a name="line.22"></a> +<span class="sourceLineNo">023</span>import static org.apache.hadoop.hbase.client.ConnectionUtils.createClosestRowAfter;<a name="line.23"></a> +<span class="sourceLineNo">024</span>import static org.apache.hadoop.hbase.client.ConnectionUtils.isEmptyStopRow;<a name="line.24"></a> +<span class="sourceLineNo">025</span>import static org.apache.hadoop.hbase.client.RegionInfo.createRegionName;<a name="line.25"></a> +<span class="sourceLineNo">026</span>import static org.apache.hadoop.hbase.util.Bytes.BYTES_COMPARATOR;<a name="line.26"></a> +<span class="sourceLineNo">027</span>import static org.apache.hadoop.hbase.util.CollectionUtils.computeIfAbsent;<a name="line.27"></a> +<span class="sourceLineNo">028</span><a name="line.28"></a> +<span class="sourceLineNo">029</span>import java.io.IOException;<a name="line.29"></a> +<span class="sourceLineNo">030</span>import java.util.Arrays;<a name="line.30"></a> +<span class="sourceLineNo">031</span>import java.util.HashSet;<a name="line.31"></a> +<span class="sourceLineNo">032</span>import java.util.Iterator;<a name="line.32"></a> +<span class="sourceLineNo">033</span>import java.util.LinkedHashMap;<a name="line.33"></a> +<span class="sourceLineNo">034</span>import java.util.Map;<a name="line.34"></a> +<span class="sourceLineNo">035</span>import java.util.Optional;<a name="line.35"></a> +<span class="sourceLineNo">036</span>import java.util.Set;<a name="line.36"></a> +<span class="sourceLineNo">037</span>import java.util.concurrent.CompletableFuture;<a name="line.37"></a> +<span class="sourceLineNo">038</span>import java.util.concurrent.ConcurrentHashMap;<a name="line.38"></a> +<span class="sourceLineNo">039</span>import java.util.concurrent.ConcurrentMap;<a name="line.39"></a> +<span class="sourceLineNo">040</span>import java.util.concurrent.ConcurrentNavigableMap;<a name="line.40"></a> +<span class="sourceLineNo">041</span>import java.util.concurrent.ConcurrentSkipListMap;<a name="line.41"></a> +<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.DoNotRetryIOException;<a name="line.42"></a> +<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.HConstants;<a name="line.43"></a> +<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.HRegionLocation;<a name="line.44"></a> +<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.MetaTableAccessor;<a name="line.45"></a> +<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.RegionLocations;<a name="line.46"></a> +<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.TableName;<a name="line.47"></a> +<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.TableNotFoundException;<a name="line.48"></a> +<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.client.Scan.ReadType;<a name="line.49"></a> +<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.50"></a> +<span class="sourceLineNo">051</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.51"></a> +<span class="sourceLineNo">052</span>import org.slf4j.Logger;<a name="line.52"></a> +<span class="sourceLineNo">053</span>import org.slf4j.LoggerFactory;<a name="line.53"></a> +<span class="sourceLineNo">054</span><a name="line.54"></a> +<span class="sourceLineNo">055</span>/**<a name="line.55"></a> +<span class="sourceLineNo">056</span> * The asynchronous locator for regions other than meta.<a name="line.56"></a> +<span class="sourceLineNo">057</span> */<a name="line.57"></a> +<span class="sourceLineNo">058</span>@InterfaceAudience.Private<a name="line.58"></a> +<span class="sourceLineNo">059</span>class AsyncNonMetaRegionLocator {<a name="line.59"></a> +<span class="sourceLineNo">060</span><a name="line.60"></a> +<span class="sourceLineNo">061</span> private static final Logger LOG = LoggerFactory.getLogger(AsyncNonMetaRegionLocator.class);<a name="line.61"></a> +<span class="sourceLineNo">062</span><a name="line.62"></a> +<span class="sourceLineNo">063</span> static final String MAX_CONCURRENT_LOCATE_REQUEST_PER_TABLE =<a name="line.63"></a> +<span class="sourceLineNo">064</span> "hbase.client.meta.max.concurrent.locate.per.table";<a name="line.64"></a> +<span class="sourceLineNo">065</span><a name="line.65"></a> +<span class="sourceLineNo">066</span> private static final int DEFAULT_MAX_CONCURRENT_LOCATE_REQUEST_PER_TABLE = 8;<a name="line.66"></a> +<span class="sourceLineNo">067</span><a name="line.67"></a> +<span class="sourceLineNo">068</span> private final AsyncConnectionImpl conn;<a name="line.68"></a> +<span class="sourceLineNo">069</span><a name="line.69"></a> +<span class="sourceLineNo">070</span> private final int maxConcurrentLocateRequestPerTable;<a name="line.70"></a> +<span class="sourceLineNo">071</span><a name="line.71"></a> +<span class="sourceLineNo">072</span> private final ConcurrentMap<TableName, TableCache> cache = new ConcurrentHashMap<>();<a name="line.72"></a> +<span class="sourceLineNo">073</span><a name="line.73"></a> +<span class="sourceLineNo">074</span> private static final class LocateRequest {<a name="line.74"></a> +<span class="sourceLineNo">075</span><a name="line.75"></a> +<span class="sourceLineNo">076</span> public final byte[] row;<a name="line.76"></a> +<span class="sourceLineNo">077</span><a name="line.77"></a> +<span class="sourceLineNo">078</span> public final RegionLocateType locateType;<a name="line.78"></a> +<span class="sourceLineNo">079</span><a name="line.79"></a> +<span class="sourceLineNo">080</span> public LocateRequest(byte[] row, RegionLocateType locateType) {<a name="line.80"></a> +<span class="sourceLineNo">081</span> this.row = row;<a name="line.81"></a> +<span class="sourceLineNo">082</span> this.locateType = locateType;<a name="line.82"></a> +<span class="sourceLineNo">083</span> }<a name="line.83"></a> +<span class="sourceLineNo">084</span><a name="line.84"></a> +<span class="sourceLineNo">085</span> @Override<a name="line.85"></a> +<span class="sourceLineNo">086</span> public int hashCode() {<a name="line.86"></a> +<span class="sourceLineNo">087</span> return Bytes.hashCode(row) ^ locateType.hashCode();<a name="line.87"></a> +<span class="sourceLineNo">088</span> }<a name="line.88"></a> +<span class="sourceLineNo">089</span><a name="line.89"></a> +<span class="sourceLineNo">090</span> @Override<a name="line.90"></a> +<span class="sourceLineNo">091</span> public boolean equals(Object obj) {<a name="line.91"></a> +<span class="sourceLineNo">092</span> if (obj == null || obj.getClass() != LocateRequest.class) {<a name="line.92"></a> +<span class="sourceLineNo">093</span> return false;<a name="line.93"></a> +<span class="sourceLineNo">094</span> }<a name="line.94"></a> +<span class="sourceLineNo">095</span> LocateRequest that = (LocateRequest) obj;<a name="line.95"></a> +<span class="sourceLineNo">096</span> return locateType.equals(that.locateType) && Bytes.equals(row, that.row);<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><a name="line.99"></a> +<span class="sourceLineNo">100</span> private static final class TableCache {<a name="line.100"></a> +<span class="sourceLineNo">101</span><a name="line.101"></a> +<span class="sourceLineNo">102</span> public final ConcurrentNavigableMap<byte[], HRegionLocation> cache =<a name="line.102"></a> +<span class="sourceLineNo">103</span> new ConcurrentSkipListMap<>(BYTES_COMPARATOR);<a name="line.103"></a> +<span class="sourceLineNo">104</span><a name="line.104"></a> +<span class="sourceLineNo">105</span> public final Set<LocateRequest> pendingRequests = new HashSet<>();<a name="line.105"></a> +<span class="sourceLineNo">106</span><a name="line.106"></a> +<span class="sourceLineNo">107</span> public final Map<LocateRequest, CompletableFuture<HRegionLocation>> allRequests =<a name="line.107"></a> +<span class="sourceLineNo">108</span> new LinkedHashMap<>();<a name="line.108"></a> +<span class="sourceLineNo">109</span><a name="line.109"></a> +<span class="sourceLineNo">110</span> public boolean hasQuota(int max) {<a name="line.110"></a> +<span class="sourceLineNo">111</span> return pendingRequests.size() < max;<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> public boolean isPending(LocateRequest req) {<a name="line.114"></a> +<span class="sourceLineNo">115</span> return pendingRequests.contains(req);<a name="line.115"></a> +<span class="sourceLineNo">116</span> }<a name="line.116"></a> +<span class="sourceLineNo">117</span><a name="line.117"></a> +<span class="sourceLineNo">118</span> public void send(LocateRequest req) {<a name="line.118"></a> +<span class="sourceLineNo">119</span> pendingRequests.add(req);<a name="line.119"></a> +<span class="sourceLineNo">120</span> }<a name="line.120"></a> +<span class="sourceLineNo">121</span><a name="line.121"></a> +<span class="sourceLineNo">122</span> public Optional<LocateRequest> getCandidate() {<a name="line.122"></a> +<span class="sourceLineNo">123</span> return allRequests.keySet().stream().filter(r -> !isPending(r)).findFirst();<a name="line.123"></a> +<span class="sourceLineNo">124</span> }<a name="line.124"></a> +<span class="sourceLineNo">125</span><a name="line.125"></a> +<span class="sourceLineNo">126</span> public void clearCompletedRequests(Optional<HRegionLocation> location) {<a name="line.126"></a> +<span class="sourceLineNo">127</span> for (Iterator<Map.Entry<LocateRequest, CompletableFuture<HRegionLocation>>> iter =<a name="line.127"></a> +<span class="sourceLineNo">128</span> allRequests.entrySet().iterator(); iter.hasNext();) {<a name="line.128"></a> +<span class="sourceLineNo">129</span> Map.Entry<LocateRequest, CompletableFuture<HRegionLocation>> entry = iter.next();<a name="line.129"></a> +<span class="sourceLineNo">130</span> if (tryComplete(entry.getKey(), entry.getValue(), location)) {<a name="line.130"></a> +<span class="sourceLineNo">131</span> iter.remove();<a name="line.131"></a> +<span class="sourceLineNo">132</span> }<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><a name="line.135"></a> +<span class="sourceLineNo">136</span> private boolean tryComplete(LocateRequest req, CompletableFuture<HRegionLocation> future,<a name="line.136"></a> +<span class="sourceLineNo">137</span> Optional<HRegionLocation> location) {<a name="line.137"></a> +<span class="sourceLineNo">138</span> if (future.isDone()) {<a name="line.138"></a> +<span class="sourceLineNo">139</span> return true;<a name="line.139"></a> +<span class="sourceLineNo">140</span> }<a name="line.140"></a> +<span class="sourceLineNo">141</span> if (!location.isPresent()) {<a name="line.141"></a> +<span class="sourceLineNo">142</span> return false;<a name="line.142"></a> +<span class="sourceLineNo">143</span> }<a name="line.143"></a> +<span class="sourceLineNo">144</span> HRegionLocation loc = location.get();<a name="line.144"></a> +<span class="sourceLineNo">145</span> boolean completed;<a name="line.145"></a> +<span class="sourceLineNo">146</span> if (req.locateType.equals(RegionLocateType.BEFORE)) {<a name="line.146"></a> +<span class="sourceLineNo">147</span> // for locating the row before current row, the common case is to find the previous region<a name="line.147"></a> +<span class="sourceLineNo">148</span> // in reverse scan, so we check the endKey first. In general, the condition should be<a name="line.148"></a> +<span class="sourceLineNo">149</span> // startKey < req.row and endKey >= req.row. Here we split it to endKey == req.row ||<a name="line.149"></a> +<span class="sourceLineNo">150</span> // (endKey > req.row && startKey < req.row). The two conditions are equal since startKey <<a name="line.150"></a> +<span class="sourceLineNo">151</span> // endKey.<a name="line.151"></a> +<span class="sourceLineNo">152</span> int c = Bytes.compareTo(loc.getRegion().getEndKey(), req.row);<a name="line.152"></a> +<span class="sourceLineNo">153</span> completed =<a name="line.153"></a> +<span class="sourceLineNo">154</span> c == 0 || (c > 0 && Bytes.compareTo(loc.getRegion().getStartKey(), req.row) < 0);<a name="line.154"></a> +<span class="sourceLineNo">155</span> } else {<a name="line.155"></a> +<span class="sourceLineNo">156</span> completed = loc.getRegion().containsRow(req.row);<a name="line.156"></a> +<span class="sourceLineNo">157</span> }<a name="line.157"></a> +<span class="sourceLineNo">158</span> if (completed) {<a name="line.158"></a> +<span class="sourceLineNo">159</span> future.complete(loc);<a name="line.159"></a> +<span class="sourceLineNo">160</span> return true;<a name="line.160"></a> +<span class="sourceLineNo">161</span> } else {<a name="line.161"></a> +<span class="sourceLineNo">162</span> return false;<a name="line.162"></a> +<span class="sourceLineNo">163</span> }<a name="line.163"></a> +<span class="sourceLineNo">164</span> }<a name="line.164"></a> +<span class="sourceLineNo">165</span> }<a name="line.165"></a> +<span class="sourceLineNo">166</span><a name="line.166"></a> +<span class="sourceLineNo">167</span> AsyncNonMetaRegionLocator(AsyncConnectionImpl conn) {<a name="line.167"></a> +<span class="sourceLineNo">168</span> this.conn = conn;<a name="line.168"></a> +<span class="sourceLineNo">169</span> this.maxConcurrentLocateRequestPerTable = conn.getConfiguration().getInt(<a name="line.169"></a> +<span class="sourceLineNo">170</span> MAX_CONCURRENT_LOCATE_REQUEST_PER_TABLE, DEFAULT_MAX_CONCURRENT_LOCATE_REQUEST_PER_TABLE);<a name="line.170"></a> +<span class="sourceLineNo">171</span> }<a name="line.171"></a> +<span class="sourceLineNo">172</span><a name="line.172"></a> +<span class="sourceLineNo">173</span> private TableCache getTableCache(TableName tableName) {<a name="line.173"></a> +<span class="sourceLineNo">174</span> return computeIfAbsent(cache, tableName, TableCache::new);<a name="line.174"></a> +<span class="sourceLineNo">175</span> }<a name="line.175"></a> +<span class="sourceLineNo">176</span><a name="line.176"></a> +<span class="sourceLineNo">177</span> private void removeFromCache(HRegionLocation loc) {<a name="line.177"></a> +<span class="sourceLineNo">178</span> TableCache tableCache = cache.get(loc.getRegion().getTable());<a name="line.178"></a> +<span class="sourceLineNo">179</span> if (tableCache == null) {<a name="line.179"></a> +<span class="sourceLineNo">180</span> return;<a name="line.180"></a> +<span class="sourceLineNo">181</span> }<a name="line.181"></a> +<span class="sourceLineNo">182</span> tableCache.cache.computeIfPresent(loc.getRegion().getStartKey(), (k, oldLoc) -> {<a name="line.182"></a> +<span class="sourceLineNo">183</span> if (oldLoc.getSeqNum() > loc.getSeqNum() ||<a name="line.183"></a> +<span class="sourceLineNo">184</span> !oldLoc.getServerName().equals(loc.getServerName())) {<a name="line.184"></a> +<span class="sourceLineNo">185</span> return oldLoc;<a name="line.185"></a> +<span class="sourceLineNo">186</span> }<a name="line.186"></a> +<span class="sourceLineNo">187</span> return null;<a name="line.187"></a> +<span class="sourceLineNo">188</span> });<a name="line.188"></a> +<span class="sourceLineNo">189</span> }<a name="line.189"></a> +<span class="sourceLineNo">190</span><a name="line.190"></a> +<span class="sourceLineNo">191</span> // return whether we add this loc to cache<a name="line.191"></a> +<span class="sourceLineNo">192</span> private boolean addToCache(TableCache tableCache, HRegionLocation loc) {<a name="line.192"></a> +<span class="sourceLineNo">193</span> if (LOG.isTraceEnabled()) {<a name="line.193"></a> +<span class="sourceLineNo">194</span> LOG.trace("Try adding " + loc + " to cache");<a name="line.194"></a> +<span class="sourceLineNo">195</span> }<a name="line.195"></a> +<span class="sourceLineNo">196</span> byte[] startKey = loc.getRegion().getStartKey();<a name="line.196"></a> +<span class="sourceLineNo">197</span> HRegionLocation oldLoc = tableCache.cache.putIfAbsent(startKey, loc);<a name="line.197"></a> +<span class="sourceLineNo">198</span> if (oldLoc == null) {<a name="line.198"></a> +<span class="sourceLineNo">199</span> return true;<a name="line.199"></a> +<span class="sourceLineNo">200</span> }<a name="line.200"></a> +<span class="sourceLineNo">201</span> if (oldLoc.getSeqNum() > loc.getSeqNum() ||<a name="line.201"></a> +<span class="sourceLineNo">202</span> oldLoc.getServerName().equals(loc.getServerName())) {<a name="line.202"></a> +<span class="sourceLineNo">203</span> if (LOG.isTraceEnabled()) {<a name="line.203"></a> +<span class="sourceLineNo">204</span> LOG.trace("Will not add " + loc + " to cache because the old value " + oldLoc +<a name="line.204"></a> +<span class="sourceLineNo">205</span> " is newer than us or has the same server name");<a name="line.205"></a> +<span class="sourceLineNo">206</span> }<a name="line.206"></a> +<span class="sourceLineNo">207</span> return false;<a name="line.207"></a> +<span class="sourceLineNo">208</span> }<a name="line.208"></a> +<span class="sourceLineNo">209</span> return loc == tableCache.cache.compute(startKey, (k, oldValue) -> {<a name="line.209"></a> +<span class="sourceLineNo">210</span> if (oldValue == null || oldValue.getSeqNum() <= loc.getSeqNum()) {<a name="line.210"></a> +<span class="sourceLineNo">211</span> return loc;<a name="line.211"></a> +<span class="sourceLineNo">212</span> }<a name="line.212"></a> +<span class="sourceLineNo">213</span> if (LOG.isTraceEnabled()) {<a name="line.213"></a> +<span class="sourceLineNo">214</span> LOG.trace("Will not add " + loc + " to cache because the old value " + oldValue +<a name="line.214"></a> +<span class="sourceLineNo">215</span> " is newer than us or has the same server name." +<a name="line.215"></a> +<span class="sourceLineNo">216</span> " Maybe it is updated before we replace it");<a name="line.216"></a> +<span class="sourceLineNo">217</span> }<a name="line.217"></a> +<span class="sourceLineNo">218</span> return oldValue;<a name="line.218"></a> +<span class="sourceLineNo">219</span> });<a name="line.219"></a> +<span class="sourceLineNo">220</span> }<a name="line.220"></a> +<span class="sourceLineNo">221</span><a name="line.221"></a> +<span class="sourceLineNo">222</span> @edu.umd.cs.findbugs.annotations.SuppressWarnings(value = "UPM_UNCALLED_PRIVATE_METHOD",<a name="line.222"></a> +<span class="sourceLineNo">223</span> justification = "Called by lambda expression")<a name="line.223"></a> +<span class="sourceLineNo">224</span> private void addToCache(HRegionLocation loc) {<a name="line.224"></a> +<span class="sourceLineNo">225</span> addToCache(getTableCache(loc.getRegion().getTable()), loc);<a name="line.225"></a> +<span class="sourceLineNo">226</span> if (LOG.isTraceEnabled()) {<a name="line.226"></a> +<span class="sourceLineNo">227</span> LOG.trace("Try adding " + loc + " to cache");<a name="line.227"></a> +<span class="sourceLineNo">228</span> }<a name="line.228"></a> +<span class="sourceLineNo">229</span> }<a name="line.229"></a> +<span class="sourceLineNo">230</span><a name="line.230"></a> +<span class="sourceLineNo">231</span> private void complete(TableName tableName, LocateRequest req, HRegionLocation loc,<a name="line.231"></a> +<span class="sourceLineNo">232</span> Throwable error) {<a name="line.232"></a> +<span class="sourceLineNo">233</span> if (error != null) {<a name="line.233"></a> +<span class="sourceLineNo">234</span> LOG.warn("Failed to locate region in '" + tableName + "', row='" +<a name="line.234"></a> +<span class="sourceLineNo">235</span> Bytes.toStringBinary(req.row) + "', locateType=" + req.locateType, error);<a name="line.235"></a> +<span class="sourceLineNo">236</span> }<a name="line.236"></a> +<span class="sourceLineNo">237</span> Optional<LocateRequest> toSend = Optional.empty();<a name="line.237"></a> +<span class="sourceLineNo">238</span> TableCache tableCache = getTableCache(tableName);<a name="line.238"></a> +<span class="sourceLineNo">239</span> if (loc != null) {<a name="line.239"></a> +<span class="sourceLineNo">240</span> if (!addToCache(tableCache, loc)) {<a name="line.240"></a> +<span class="sourceLineNo">241</span> // someone is ahead of us.<a name="line.241"></a> +<span class="sourceLineNo">242</span> synchronized (tableCache) {<a name="line.242"></a> +<span class="sourceLineNo">243</span> tableCache.pendingRequests.remove(req);<a name="line.243"></a> +<span class="sourceLineNo">244</span> tableCache.clearCompletedRequests(Optional.empty());<a name="line.244"></a> +<span class="sourceLineNo">245</span> // Remove a complete locate request in a synchronized block, so the table cache must have<a name="line.245"></a> +<span class="sourceLineNo">246</span> // quota to send a candidate request.<a name="line.246"></a> +<span class="sourceLineNo">247</span> toSend = tableCache.getCandidate();<a name="line.247"></a> +<span class="sourceLineNo">248</span> toSend.ifPresent(r -> tableCache.send(r));<a name="line.248"></a> +<span class="sourceLineNo">249</span> }<a name="line.249"></a> +<span class="sourceLineNo">250</span> toSend.ifPresent(r -> locateInMeta(tableName, r));<a name="line.250"></a> +<span class="sourceLineNo">251</span> return;<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> synchronized (tableCache) {<a name="line.254"></a> +<span class="sourceLineNo">255</span> tableCache.pendingRequests.remove(req);<a name="line.255"></a> +<span class="sourceLineNo">256</span> if (error instanceof DoNotRetryIOException) {<a name="line.256"></a> +<span class="sourceLineNo">257</span> CompletableFuture<?> future = tableCache.allRequests.remove(req);<a name="line.257"></a> +<span class="sourceLineNo">258</span> if (future != null) {<a name="line.258"></a> +<span class="sourceLineNo">259</span> future.completeExceptionally(error);<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> tableCache.clearCompletedRequests(Optional.ofNullable(loc));<a name="line.262"></a> +<span class="sourceLineNo">263</span> // Remove a complete locate request in a synchronized block, so the table cache must have<a name="line.263"></a> +<span class="sourceLineNo">264</span> // quota to send a candidate request.<a name="line.264"></a> +<span class="sourceLineNo">265</span> toSend = tableCache.getCandidate();<a name="line.265"></a> +<span class="sourceLineNo">266</span> toSend.ifPresent(r -> tableCache.send(r));<a name="line.266"></a> +<span class="sourceLineNo">267</span> }<a name="line.267"></a> +<span class="sourceLineNo">268</span> toSend.ifPresent(r -> locateInMeta(tableName, r));<a name="line.268"></a> +<span class="sourceLineNo">269</span> }<a name="line.269"></a> +<span class="sourceLineNo">270</span><a name="line.270"></a> +<span class="sourceLineNo">271</span> // return whether we should stop the scan<a name="line.271"></a> +<span class="sourceLineNo">272</span> private boolean onScanNext(TableName tableName, LocateRequest req, Result result,<a name="line.272"></a> <span class="sourceLineNo">273</span> Throwable error) {<a name="line.273"></a> <span class="sourceLineNo">274</span> if (error != null) {<a name="line.274"></a> <span class="sourceLineNo">275</span> complete(tableName, req, null, error);<a name="line.275"></a> -<span class="sourceLineNo">276</span> return;<a name="line.276"></a> +<span class="sourceLineNo">276</span> return true;<a name="line.276"></a> <span class="sourceLineNo">277</span> }<a name="line.277"></a> -<span class="sourceLineNo">278</span> if (results.isEmpty()) {<a name="line.278"></a> -<span class="sourceLineNo">279</span> complete(tableName, req, null, new TableNotFoundException(tableName));<a name="line.279"></a> -<span class="sourceLineNo">280</span> return;<a name="line.280"></a> -<span class="sourceLineNo">281</span> }<a name="line.281"></a> -<span class="sourceLineNo">282</span> RegionLocations locs = MetaTableAccessor.getRegionLocations(results.get(0));<a name="line.282"></a> -<span class="sourceLineNo">283</span> if (LOG.isDebugEnabled()) {<a name="line.283"></a> -<span class="sourceLineNo">284</span> LOG.debug("The fetched location of '" + tableName + "', row='" +<a name="line.284"></a> -<span class="sourceLineNo">285</span> Bytes.toStringBinary(req.row) + "', locateType=" + req.locateType + " is " + locs);<a name="line.285"></a> -<span class="sourceLineNo">286</span> }<a name="line.286"></a> -<span class="sourceLineNo">287</span> if (locs == null || locs.getDefaultRegionLocation() == null) {<a name="line.287"></a> -<span class="sourceLineNo">288</span> complete(tableName, req, null,<a name="line.288"></a> -<span class="sourceLineNo">289</span> new IOException(String.format("No location found for '%s', row='%s', locateType=%s",<a name="line.289"></a> -<span class="sourceLineNo">290</span> tableName, Bytes.toStringBinary(req.row), req.locateType)));<a name="line.290"></a> -<span class="sourceLineNo">291</span> return;<a name="line.291"></a> -<span class="sourceLineNo">292</span> }<a name="line.292"></a> -<span class="sourceLineNo">293</span> HRegionLocation loc = locs.getDefaultRegionLocation();<a name="line.293"></a> -<span class="sourceLineNo">294</span> RegionInfo info = loc.getRegion();<a name="line.294"></a> -<span class="sourceLineNo">295</span> if (info == null) {<a name="line.295"></a> -<span class="sourceLineNo">296</span> complete(tableName, req, null,<a name="line.296"></a> -<span class="sourceLineNo">297</span> new IOException(String.format("HRegionInfo is null for '%s', row='%s', locateType=%s",<a name="line.297"></a> -<span class="sourceLineNo">298</span> tableName, Bytes.toStringBinary(req.row), req.locateType)));<a name="line.298"></a> -<span class="sourceLineNo">299</span> return;<a name="line.299"></a> -<span class="sourceLineNo">300</span> }<a name="line.300"></a> -<span class="sourceLineNo">301</span> if (!info.getTable().equals(tableName)) {<a name="line.301"></a> -<span class="sourceLineNo">302</span> complete(tableName, req, null, new TableNotFoundException(<a name="line.302"></a> -<span class="sourceLineNo">303</span> "Table '" + tableName + "' was not found, got: '" + info.getTable() + "'"));<a name="line.303"></a> -<span class="sourceLineNo">304</span> return;<a name="line.304"></a> +<span class="sourceLineNo">278</span> RegionLocations locs = MetaTableAccessor.getRegionLocations(result);<a name="line.278"></a> +<span class="sourceLineNo">279</span> LOG.debug("The fetched location of '{}', row='{}', locateType={} is {}", tableName,<a name="line.279"></a> +<span class="sourceLineNo">280</span> Bytes.toStringBinary(req.row), req.locateType, locs);<a name="line.280"></a> +<span class="sourceLineNo">281</span><a name="line.281"></a> +<span class="sourceLineNo">282</span> if (locs == null || locs.getDefaultRegionLocation() == null) {<a name="line.282"></a> +<span class="sourceLineNo">283</span> complete(tableName, req, null,<a name="line.283"></a> +<span class="sourceLineNo">284</span> new IOException(String.format("No location found for '%s', row='%s', locateType=%s",<a name="line.284"></a> +<span class="sourceLineNo">285</span> tableName, Bytes.toStringBinary(req.row), req.locateType)));<a name="line.285"></a> +<span class="sourceLineNo">286</span> return true;<a name="line.286"></a> +<span class="sourceLineNo">287</span> }<a name="line.287"></a> +<span class="sourceLineNo">288</span> HRegionLocation loc = locs.getDefaultRegionLocation();<a name="line.288"></a> +<span class="sourceLineNo">289</span> RegionInfo info = loc.getRegion();<a name="line.289"></a> +<span class="sourceLineNo">290</span> if (info == null) {<a name="line.290"></a> +<span class="sourceLineNo">291</span> complete(tableName, req, null,<a name="line.291"></a> +<span class="sourceLineNo">292</span> new IOException(String.format("HRegionInfo is null for '%s', row='%s', locateType=%s",<a name="line.292"></a> +<span class="sourceLineNo">293</span> tableName, Bytes.toStringBinary(req.row), req.locateType)));<a name="line.293"></a> +<span class="sourceLineNo">294</span> return true;<a name="line.294"></a> +<span class="sourceLineNo">295</span> }<a name="line.295"></a> +<span class="sourceLineNo">296</span> if (info.isSplitParent()) {<a name="line.296"></a> +<span class="sourceLineNo">297</span> return false;<a name="line.297"></a> +<span class="sourceLineNo">298</span> }<a name="line.298"></a> +<span class="sourceLineNo">299</span> if (loc.getServerName() == null) {<a name="line.299"></a> +<span class="sourceLineNo">300</span> complete(tableName, req, null,<a name="line.300"></a> +<span class="sourceLineNo">301</span> new NoServerForRegionException(<a name="line.301"></a> +<span class="sourceLineNo">302</span> String.format("No server address listed for region '%s', row='%s', locateType=%s",<a name="line.302"></a> +<span class="sourceLineNo">303</span> info.getRegionNameAsString(), Bytes.toStringBinary(req.row), req.locateType)));<a name="line.303"></a> +<span class="sourceLineNo">304</span> return true;<a name="line.304"></a> <span class="sourceLineNo">305</span> }<a name="line.305"></a> -<span class="sourceLineNo">306</span> if (info.isSplit()) {<a name="line.306"></a> -<span class="sourceLineNo">307</span> complete(tableName, req, null,<a name="line.307"></a> -<span class="sourceLineNo">308</span> new RegionOfflineException(<a name="line.308"></a> -<span class="sourceLineNo">309</span> "the only available region for the required row is a split parent," +<a name="line.309"></a> -<span class="sourceLineNo">310</span> " the daughters should be online soon: '" + info.getRegionNameAsString() + "'"));<a name="line.310"></a> -<span class="sourceLineNo">311</span> return;<a name="line.311"></a> -<span class="sourceLineNo">312</span> }<a name="line.312"></a> -<span class="sourceLineNo">313</span> if (info.isOffline()) {<a name="line.313"></a> -<span class="sourceLineNo">314</span> complete(tableName, req, null, new RegionOfflineException("the region is offline, could" +<a name="line.314"></a> -<span class="sourceLineNo">315</span> " be caused by a disable table call: '" + info.getRegionNameAsString() + "'"));<a name="line.315"></a> -<span class="sourceLineNo">316</span> return;<a name="line.316"></a> -<span class="sourceLineNo">317</span> }<a name="line.317"></a> -<span class="sourceLineNo">318</span> if (loc.getServerName() == null) {<a name="line.318"></a> -<span class="sourceLineNo">319</span> complete(tableName, req, null,<a name="line.319"></a> -<span class="sourceLineNo">320</span> new NoServerForRegionException(<a name="line.320"></a> -<span class="sourceLineNo">321</span> String.format("No server address listed for region '%s', row='%s', locateType=%s",<a name="line.321"></a> -<span class="sourceLineNo">322</span> info.getRegionNameAsString(), Bytes.toStringBinary(req.row), req.locateType)));<a name="line.322"></a> -<span class="sourceLineNo">323</span> return;<a name="line.323"></a> -<span class="sourceLineNo">324</span> }<a name="line.324"></a> -<span class="sourceLineNo">325</span> complete(tableName, req, loc, null);<a name="line.325"></a> +<span class="sourceLineNo">306</span> complete(tableName, req, loc, null);<a name="line.306"></a> +<span class="sourceLineNo">307</span> return true;<a name="line.307"></a> +<span class="sourceLineNo">308</span> }<a name="line.308"></a> +<span class="sourceLineNo">309</span><a name="line.309"></a> +<span class="sourceLineNo">310</span> private HRegionLocation locateRowInCache(TableCache tableCache, TableName tableName, byte[] row) {<a name="line.310"></a> +<span class="sourceLineNo">311</span> Map.Entry<byte[], HRegionLocation> entry = tableCache.cache.floorEntry(row);<a name="line.311"></a> +<span class="sourceLineNo">312</span> if (entry == null) {<a name="line.312"></a> +<span class="sourceLineNo">313</span> return null;<a name="line.313"></a> +<span class="sourceLineNo">314</span> }<a name="line.314"></a> +<span class="sourceLineNo">315</span> HRegionLocation loc = entry.getValue();<a name="line.315"></a> +<span class="sourceLineNo">316</span> byte[] endKey = loc.getRegion().getEndKey();<a name="line.316"></a> +<span class="sourceLineNo">317</span> if (isEmptyStopRow(endKey) || Bytes.compareTo(row, endKey) < 0) {<a name="line.317"></a> +<span class="sourceLineNo">318</span> if (LOG.isTraceEnabled()) {<a name="line.318"></a> +<span class="sourceLineNo">319</span> LOG.trace("Found " + loc + " in cache for '" + tableName + "', row='" +<a name="line.319"></a> +<span class="sourceLineNo">320</span> Bytes.toStringBinary(row) + "', locateType=" + RegionLocateType.CURRENT);<a name="line.320"></a> +<span class="sourceLineNo">321</span> }<a name="line.321"></a> +<span class="sourceLineNo">322</span> return loc;<a name="line.322"></a> +<span class="sourceLineNo">323</span> } else {<a name="line.323"></a> +<span class="sourceLineNo">324</span> return null;<a name="line.324"></a> +<span class="sourceLineNo">325</span> }<a name="line.325"></a> <span class="sourceLineNo">326</span> }<a name="line.326"></a> <span class="sourceLineNo">327</span><a name="line.327"></a> -<span class="sourceLineNo">328</span> private HRegionLocation locateRowInCache(TableCache tableCache, TableName tableName, byte[] row) {<a name="line.328"></a> -<span class="sourceLineNo">329</span> Map.Entry<byte[], HRegionLocation> entry = tableCache.cache.floorEntry(row);<a name="line.329"></a> -<span class="sourceLineNo">330</span> if (entry == null) {<a name="line.330"></a> -<span class="sourceLineNo">331</span> return null;<a name="line.331"></a> -<span class="sourceLineNo">332</span> }<a name="line.332"></a> -<span class="sourceLineNo">333</span> HRegionLocation loc = entry.getValue();<a name="line.333"></a> -<span class="sourceLineNo">334</span> byte[] endKey = loc.getRegion().getEndKey();<a name="line.334"></a> -<span class="sourceLineNo">335</span> if (isEmptyStopRow(endKey) || Bytes.compareTo(row, endKey) < 0) {<a name="line.335"></a> -<span class="sourceLineNo">336</span> if (LOG.isTraceEnabled()) {<a name="line.336"></a> -<span class="sourceLineNo">337</span> LOG.trace("Found " + loc + " in cache for '" + tableName + "', row='" +<a name="line.337"></a> -<span class="sourceLineNo">338</span> Bytes.toStringBinary(row) + "', locateType=" + RegionLocateType.CURRENT);<a name="line.338"></a> -<span class="sourceLineNo">339</span> }<a name="line.339"></a> -<span class="sourceLineNo">340</span> return loc;<a name="line.340"></a> -<span class="sourceLineNo">341</span> } else {<a name="line.341"></a> -<span class="sourceLineNo">342</span> return null;<a name="line.342"></a> -<span class="sourceLineNo">343</span> }<a name="line.343"></a> -<span class="sourceLineNo">344</span> }<a name="line.344"></a> -<span class="sourceLineNo">345</span><a name="line.345"></a> -<span class="sourceLineNo">346</span> private HRegionLocation locateRowBeforeInCache(TableCache tableCache, TableName tableName,<a name="line.346"></a> -<span class="sourceLineNo">347</span> byte[] row) {<a name="line.347"></a> -<span class="sourceLineNo">348</span> Map.Entry<byte[], HRegionLocation> entry =<a name="line.348"></a> -<span class="sourceLineNo">349</span> isEmptyStopRow(row) ? tableCache.cache.lastEntry() : tableCache.cache.lowerEntry(row);<a name="line.349"></a> -<span class="sourceLineNo">350</span> if (entry == null) {<a name="line.350"></a> -<span class="sourceLineNo">351</span> return null;<a name="line.351"></a> +<span class="sourceLineNo">328</span> private HRegionLocation locateRowBeforeInCache(TableCache tableCache, TableName tableName,<a name="line.328"></a> +<span class="sourceLineNo">329</span> byte[] row) {<a name="line.329"></a> +<span class="sourceLineNo">330</span> Map.Entry<byte[], HRegionLocation> entry =<a name="line.330"></a> +<span class="sourceLineNo">331</span> isEmptyStopRow(row) ? tableCache.cache.lastEntry() : tableCache.cache.lowerEntry(row);<a name="line.331"></a> +<span class="sourceLineNo">332</span> if (entry == null) {<a name="line.332"></a> +<span class="sourceLineNo">333</span> return null;<a name="line.333"></a> +<span class="sourceLineNo">334</span> }<a name="line.334"></a> +<span class="sourceLineNo">335</span> HRegionLocation loc = entry.getValue();<a name="line.335"></a> +<span class="sourceLineNo">336</span> if (isEmptyStopRow(loc.getRegion().getEndKey()) ||<a name="line.336"></a> +<span class="sourceLineNo">337</span> Bytes.compareTo(loc.getRegion().getEndKey(), row) >= 0) {<a name="line.337"></a> +<span class="sourceLineNo">338</span> if (LOG.isTraceEnabled()) {<a name="line.338"></a> +<span class="sourceLineNo">339</span> LOG.trace("Found " + loc + " in cache for '" + tableName + "', row='" +<a name="line.339"></a> +<span class="sourceLineNo">340</span> Bytes.toStringBinary(row) + "', locateType=" + RegionLocateType.BEFORE);<a name="line.340"></a> +<span class="sourceLineNo">341</span> }<a name="line.341"></a> +<span class="sourceLineNo">342</span> return loc;<a name="line.342"></a> +<span class="sourceLineNo">343</span> } else {<a name="line.343"></a> +<span class="sourceLineNo">344</span> return null;<a name="line.344"></a> +<span class="sourceLineNo">345</span> }<a name="line.345"></a> +<span class="sourceLineNo">346</span> }<a name="line.346"></a> +<span class="sourceLineNo">347</span><a name="line.347"></a> +<span class="sourceLineNo">348</span> private void locateInMeta(TableName tableName, LocateRequest req) {<a name="line.348"></a> +<span class="sourceLineNo">349</span> if (LOG.isTraceEnabled()) {<a name="line.349"></a> +<span class="sourceLineNo">350</span> LOG.trace("Try locate '" + tableName + "', row='" + Bytes.toStringBinary(req.row) +<a name="line.350"></a> +<span class="sourceLineNo">351</span> "', locateType=" + req.locateType + " in meta");<a name="line.351"></a> <span class="sourceLineNo">352</span> }<a name="line.352"></a> -<span class="sourceLineNo">353</span> HRegionLocation loc = entry.getValue();<a name="line.353"></a> -<span class="sourceLineNo">354</span> if (isEmptyStopRow(loc.getRegion().getEndKey()) ||<a name="line.354"></a> -<span class="sourceLineNo">355</span> Bytes.compareTo(loc.getRegion().getEndKey(), row) >= 0) {<a name="line.355"></a> -<span class="sourceLineNo">356</span> if (LOG.isTraceEnabled()) {<a name="line.356"></a> -<span class="sourceLineNo">357</span> LOG.trace("Found " + loc + " in cache for '" + tableName + "', row='" +<a name="line.357"></a> -<span class="sourceLineNo">358</span> Bytes.toStringBinary(row) + "', locateType=" + RegionLocateType.BEFORE);<a name="line.358"></a> -<span class="sourceLineNo">359</span> }<a name="line.359"></a> -<span class="sourceLineNo">360</span> return loc;<a name="line.360"></a> +<span class="sourceLineNo">353</span> byte[] metaStartKey;<a name="line.353"></a> +<span class="sourceLineNo">354</span> if (req.locateType.equals(RegionLocateType.BEFORE)) {<a name="line.354"></a> +<span class="sourceLineNo">355</span> if (isEmptyStopRow(req.row)) {<a name="line.355"></a> +<span class="sourceLineNo">356</span> byte[] binaryTableName = tableName.getName();<a name="line.356"></a> +<span class="sourceLineNo">357</span> metaStartKey = Arrays.copyOf(binaryTableName, binaryTableName.length + 1);<a name="line.357"></a> +<span class="sourceLineNo">358</span> } else {<a name="line.358"></a> +<span class="sourceLineNo">359</span> metaStartKey = createRegionName(tableName, req.row, ZEROES, false);<a name="line.359"></a> +<span class="sourceLineNo">360</span> }<a name="line.360"></a> <span class="sourceLineNo">361</span> } else {<a name="line.361"></a> -<span class="sourceLineNo">362</span> return null;<a name="line.362"></a> +<span class="sourceLineNo">362</span> metaStartKey = createRegionName(tableName, req.row, NINES, false);<a name="line.362"></a> <span class="sourceLineNo">363</span> }<a name="line.363"></a> -<span class="sourceLineNo">364</span> }<a name="line.364"></a> -<span class="sourceLineNo">365</span><a name="line.365"></a> -<span class="sourceLineNo">366</span> private void locateInMeta(TableName tableName, LocateRequest req) {<a name="line.366"></a> -<span class="sourceLineNo">367</span> if (LOG.isTraceEnabled()) {<a name="line.367"></a> -<span class="sourceLineNo">368</span> LOG.trace("Try locate '" + tableName + "', row='" + Bytes.toStringBinary(req.row) +<a name="line.368"></a> -<span class="sourceLineNo">369</span> "', locateType=" + req.locateType + " in meta");<a name="line.369"></a> -<span class="sourceLineNo">370</span> }<a name="line.370"></a> -<span class="sourceLineNo">371</span> byte[] metaKey;<a name="line.371"></a> -<span class="sourceLineNo">372</span> if (req.locateType.equals(RegionLocateType.BEFORE)) {<a name="line.372"></a> -<span class="sourceLineNo">373</span> if (isEmptyStopRow(req.row)) {<a name="line.373"></a> -<span class="sourceLineNo">374</span> byte[] binaryTableName = tableName.getName();<a name="line.374"></a> -<span class="sourceLineNo">375</span> metaKey = Arrays.copyOf(binaryTableName, binaryTableName.length + 1);<a name="line.375"></a> -<span class="sourceLineNo">376</span> } else {<a name="line.376"></a> -<span class="sourceLineNo">377</span> metaKey = createRegionName(tableName, req.row, ZEROES, false);<a name="line.377"></a> -<span class="sourceLineNo">378</span> }<a name="line.378"></a> -<span class="sourceLineNo">379</span> } else {<a name="line.379"></a> -<span class="sourceLineNo">380</span> metaKey = createRegionName(tableName, req.row, NINES, false);<a name="line.380"></a> -<span class="sourceLineNo">381</span> }<a name="line.381"></a> -<span class="sourceLineNo">382</span> conn.getTable(META_TABLE_NAME)<a name="line.382"></a> -<span class="sourceLineNo">383</span> .scanAll(new Scan().withStartRow(metaKey).setReversed(true).addFamily(CATALOG_FAMILY)<a name="line.383"></a> -<span class="sourceLineNo">384</span> .setOneRowLimit())<a name="line.384"></a> -<span class="sourceLineNo">385</span> .whenComplete((results, error) -> onScanComplete(tableName, req, results, error));<a name="line.385"></a> -<span class="sourceLineNo">386</span> }<a name="line.386"></a> -<span class="sourceLineNo">387</span><a name="line.387"></a> -<span class="sourceLineNo">388</span> private HRegionLocation locateInCache(TableCache tableCache, TableName tableName, byte[] row,<a name="line.388"></a> -<span class="sourceLineNo">389</span> RegionLocateType locateType) {<a name="line.389"></a> -<span class="sourceLineNo">390</span> return locateType.equals(RegionLocateType.BEFORE)<a name="line.390"></a> -<span class="sourceLineNo">391</span> ? locateRowBeforeInCache(tableCache, tableName, row)<a name="line.391"></a> -<span class="sourceLineNo">392</span> : locateRowInCache(tableCache, tableName, row);<a name="line.392"></a> -<span class="sourceLineNo">393</span> }<a name="line.393"></a> -<span class="sourceLineNo">394</span><a name="line.394"></a> -<span class="sourceLineNo">395</span> // locateToPrevious is true means we will use the start key of a region to locate the region<a name="line.395"></a> -<span class="sourceLineNo">396</span> // placed before it. Used for reverse scan. See the comment of<a name="line.396"></a> -<span class="sourceLineNo">397</span> // AsyncRegionLocator.getPreviousRegionLocation.<a name="line.397"></a> -<span class="sourceLineNo">398</span> private CompletableFuture<HRegionLocation> getRegionLocationInternal(TableName tableName,<a name="line.398"></a> -<span class="sourceLineNo">399</span> byte[] row, RegionLocateType locateType, boolean reload) {<a name="line.399"></a> -<span class="sourceLineNo">400</span> // AFTER should be convert to CURRENT before calling this method<a name="line.400"></a> -<span class="sourceLineNo">401</span> assert !locateType.equals(RegionLocateType.AFTER);<a name="line.401"></a> -<span class="sourceLineNo">402</span> TableCache tableCache = getTableCache(tableName);<a name="line.402"></a> -<span class="sourceLineNo">403</span> if (!reload) {<a name="line.403"></a> -<span class="sourceLineNo">404</span> HRegionLocation loc = locateInCache(tableCache, tableName, row, locateType);<a name="line.404"></a> -<span class="sourceLineNo">405</span> if (loc != null) {<a name="line.405"></a> -<span class="sourceLineNo">406</span> return CompletableFuture.completedFuture(loc);<a name="line.406"></a> -<span class="sourceLineNo">407</span> }<a name="line.407"></a> -<span class="sourceLineNo">408</span> }<a name="line.408"></a> -<span class="sourceLineNo">409</span> CompletableFuture<HRegionLocation> future;<a name="line.409"></a> -<span class="sourceLineNo">410</span> LocateRequest req;<a name="line.410"></a> -<span class="sourceLineNo">411</span> boolean sendRequest = false;<a name="line.411"></a> -<span class="sourceLineNo">412</span> synchronized (tableCache) {<a name="line.412"></a> -<span class="sourceLineNo">413</span> // check again<a name="line.413"></a> -<span class="sourceLineNo">414</span> if (!reload) {<a name="line.414"></a> -<span class="sourceLineNo">415</span> HRegionLocation loc = locateInCache(tableCache, tableName, row, locateType);<a name="line.415"></a> -<span class="sourceLineNo">416</span> if (loc != null) {<a name="line.416"></a> -<span class="sourceLineNo">417</span> return CompletableFuture.completedFuture(loc);<a name="line.417"></a> -<span class="sourceLineNo">418</span> }<a name="line.418"></a> -<span class="sourceLineNo">419</span> }<a name="line.419"></a> -<span class="sourceLineNo">420</span> req = new LocateRequest(row, locateType);<a name="line.420"></a> -<span class="sourceLineNo">421</span> future = tableCache.allRequests.get(req);<a name="line.421"></a> -<span class="sourceLineNo">422</span> if (future == null) {<a name="line.422"></a> -<span class="sourceLineNo">423</span> future = new CompletableFuture<>();<a name="line.423"></a> -<span class="sourceLineNo">424</span> tableCache.allRequests.put(req, future);<a name="line.424"></a> -<span class="sourceLineNo">425</span> if (tableCache.hasQuota(maxConcurrentLocateRequestPerTable) && !tableCache.isPending(req)) {<a name="line.425"></a> -<span class="sourceLineNo">426</span> tableCache.send(req);<a name="line.426"></a> -<span class="sourceLineNo">427</span> sendRequest = true;<a name="line.427"></a> +<span class="sourceLineNo">364</span> byte[] metaStopKey =<a name="line.364"></a> +<span class="sourceLineNo">365</span> RegionInfo.createRegionName(tableName, HConstants.EMPTY_START_ROW, "", false);<a name="line.365"></a> +<span class="sourceLineNo">366</span> conn.getTable(META_TABLE_NAME)<a name="line.366"></a> +<span class="sourceLineNo">367</span> .scan(new Scan().withStartRow(metaStartKey).withStopRow(metaStopKey, true)<a name="line.367"></a> +<span class="sourceLineNo">368</span> .addFamily(HConstants.CATALOG_FAMILY).setReversed(true).setCaching(5)<a name="line.368"></a> +<span class="sourceLineNo">369</span> .setReadType(ReadType.PREAD), new AdvancedScanResultConsumer() {<a name="line.369"></a> +<span class="sourceLineNo">370</span><a name="line.370"></a> +<span class="sourceLineNo">371</span> private boolean completeNormally = false;<a name="line.371"></a> +<span class="sourceLineNo">372</span><a name="line.372"></a> +<span class="sourceLineNo">373</span> @Override<a name="line.373"></a> +<span class="sourceLineNo">374</span> public void onError(Throwable error) {<a name="line.374"></a> +<span class="sourceLineNo">375</span> onScanNext(tableName, req, null, error);<a name="line.375"></a> +<span class="sourceLineNo">376</span> }<a name="line.376"></a> +<span class="sourceLineNo">377</span><a name="line.377"></a> +<span class="sourceLineNo">378</span> @Override<a name="line.378"></a> +<span class="sourceLineNo">379</span> public void onComplete() {<a name="line.379"></a> +<span class="sourceLineNo">380</span> if (!completeNormally) {<a name="line.380"></a> +<span class="sourceLineNo">381</span> onScanNext(tableName, req, null, new TableNotFoundException(tableName));<a name="line.381"></a> +<span class="sourceLineNo">382</span> }<a name="line.382"></a> +<span class="sourceLineNo">383</span> }<a name="line.383"></a> +<span class="sourceLineNo">384</span><a name="line.384"></a> +<span class="sourceLineNo">385</span> @Override<a name="line.385"></a> +<span class="sourceLineNo">386</span> public void onNext(Result[] results, ScanController controller) {<a name="line.386"></a> +<span class="sourceLineNo">387</span> for (Result result : results) {<a name="line.387"></a> +<span class="sourceLineNo">388</span> if (onScanNext(tableName, req, result, null)) {<a name="line.388"></a> +<span class="sourceLineNo">389</span> completeNormally = true;<a name="line.389"></a> +<span class="sourceLineNo">390</span> controller.terminate();<a name="line.390"></a> +<span class="sourceLineNo">391</span> return;<a name="line.391"></a> +<span class="sourceLineNo">392</span> }<a name="line.392"></a> +<span class="sourceLineNo">393</span> }<a name="line.393"></a> +<span class="sourceLineNo">394</span> }<a name="line.394"></a> +<span class="sourceLineNo">395</span> });<a name="line.395"></a> +<span class="sourceLineNo">396</span> }<a name="line.396"></a> +<span class="sourceLineNo">397</span><a name="line.397"></a> +<span class="sourceLineNo">398</span> private HRegionLocation locateInCache(TableCache tableCache, TableName tableName, byte[] row,<a name="line.398"></a> +<span class="sourceLineNo">399</span> RegionLocateType locateType) {<a name="line.399"></a> +<span class="sourceLineNo">400</span> return locateType.equals(RegionLocateType.BEFORE)<a name="line.400"></a> +<span class="sourceLineNo">401</span> ? locateRowBeforeInCache(tableCache, tableName, row)<a name="line.401"></a> +<span class="sourceLineNo">402</span> : locateRowInCache(tableCache, tableName, row);<a name="line.402"></a> +<span class="sourceLineNo">403</span> }<a name="line.403"></a> +<span class="sourceLineNo">404</span><a name="line.404"></a> +<span class="sourceLineNo">405</span> // locateToPrevious is true means we will use the start key of a region to locate the region<a name="line.405"></a> +<span class="sourceLineNo">406</span> // placed before it. 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See the comment of<a name="line.406"></a> +<span class="sourceLineNo">407</span> // AsyncRegionLocator.getPreviousRegionLocation.<a name="line.407"></a> +<span class="sourceLineNo">408</span> private CompletableFuture<HRegionLocation> getRegionLocationInternal(TableName tableName,<a name="line.408"></a> +<span class="sourceLineNo">409</span> byte[] row, RegionLocateType locateType, boolean reload) {<a name="line.409"></a> +<span class="sourceLineNo">410</span> // AFTER should be convert to CURRENT before calling this method<a name="line.410"></a> +<span class="sourceLineNo">411</span> assert !locateType.equals(RegionLocateType.AFTER);<a name="line.411"></a> +<span class="sourceLineNo">412</span> TableCache tableCache = getTableCache(tableName);<a name="line.412"></a> +<span class="sourceLineNo">413</span> if (!reload) {<a name="line.413"></a> +<span class="sourceLineNo">414</span> HRegionLocation loc = locateInCache(tableCache, tableName, row, locateType);<a name="line.414"></a> +<span class="sourceLineNo">415</span> if (loc != null) {<a name="line.415"></a> +<span class="sourceLineNo">416</span> return CompletableFuture.completedFuture(loc);<a name="line.416"></a> +<span class="sourceLineNo">417</span> }<a name="line.417"></a> +<span class="sourceLineNo">418</span> }<a name="line.418"></a> +<span class="sourceLineNo">419</span> CompletableFuture<HRegionLocation> future;<a name="line.419"></a> +<span class="sourceLineNo">420</span> LocateRequest req;<a name="line.420"></a> +<span class="sourceLineNo">421</span> boolean sendRequest = false;<a name="line.421"></a> +<span class="sourceLineNo">422</span> synchronized (tableCache) {<a name="line.422"></a> +<span class="sourceLineNo">423</span> // check again<a name="line.423"></a> +<span class="sourceLineNo">424</span> if (!reload) {<a name="line.424"></a> +<span class="sourceLineNo">425</span> HRegionLocation loc = locateInCache(tableCache, tableName, row, locateType);<a name="line.425"></a> +<span class="sourceLineNo">426</span> if (loc != null) {<a name="line.426"></a> +<span class="sourceLineNo">427</span> return CompletableFuture.completedFuture(loc);<a name="line.427"></a> <span class="sourceLineNo">428</span> }<a name="line.428"></a> <span class="sourceLineNo">429</span> }<a name="line.429"></a> -<span class="sourceLineNo">430</span> }<a name="line.430"></a> -<span class="sourceLineNo">431</span> if (sendRequest) {<a name="line.431"></a> -<span class="sourceLineNo">432</span> locateInMeta(tableName, req);<a name="line.432"></a> -<span class="sourceLineNo">433</span> }<a name="line.433"></a> -<span class="sourceLineNo">434</span> return future;<a name="line.434"></a> -<span class="sourceLineNo">435</span> }<a name="line.435"></a> -<span class="sourceLineNo">436</span><a name="line.436"></a> -<span class="sourceLineNo">437</span> CompletableFuture<HRegionLocation> getRegionLocation(TableName tableName, byte[] row,<a name="line.437"></a> -<span class="sourceLineNo">438</span> RegionLocateType locateType, boolean reload) {<a name="line.438"></a> -<span class="sourceLineNo">439</span> if (locateType.equals(RegionLocateType.BEFORE)) {<a name="line.439"></a> -<span class="sourceLineNo">440</span> return getRegionLocationInternal(tableName, row, locateType, reload);<a name="line.440"></a> -<span class="sourceLineNo">441</span> } else {<a name="line.441"></a> -<span class="sourceLineNo">442</span> // as we know the exact row after us, so we can just create the new row, and use the same<a name="line.442"></a> -<span class="sourceLineNo">443</span> // algorithm to locate it.<a name="line.443"></a> -<span class="sourceLineNo">444</span> if (locateType.equals(RegionLocateType.AFTER)) {<a name="line.444"></a> -<span class="sourceLineNo">445</span> row = createClosestRowAfter(row);<a name="line.445"></a> -<span class="sourceLineNo">446</span> }<a name="line.446"></a> -<span class="sourceLineNo">447</span> return getRegionLocationInternal(tableName, row, RegionLocateType.CURRENT, reload);<a name="line.447"></a> -<span class="sourceLineNo">448</span> }<a name="line.448"></a> -<span class="sourceLineNo">449</span> }<a name="line.449"></a> -<span class="sourceLineNo">450</span><a name="line.450"></a> -<span class="sourceLineNo">451</span> void updateCachedLocation(HRegionLocation loc, Throwable exception) {<a name="line.451"></a> -<span class="sourceLineNo">452</span> AsyncRegionLocator.updateCachedLocation(loc, exception, l -> {<a name="line.452"></a> -<span class="sourceLineNo">453</span> TableCache tableCache = cache.get(l.getRegion().getTable());<a name="line.453"></a> -<span class="sourceLineNo">454</span> if (tableCache == null) {<a name="line.454"></a> -<span class="sourceLineNo">455</span> return null;<a name="line.455"></a> +<span class="sourceLineNo">430</span> req = new LocateRequest(row, locateType);<a name="line.430"></a> +<span class="sourceLineNo">431</span> future = tableCache.allRequests.get(req);<a name="line.431"></a> +<span class="sourceLineNo">432</span> if (future == null) {<a name="line.432"></a> +<span class="sourceLineNo">433</span> future = new CompletableFuture<>();<a name="line.433"></a> +<span class="sourceLineNo">434</span> tableCache.allRequests.put(req, future);<a name="line.434"></a> +<span class="sourceLineNo">435</span> if (tableCache.hasQuota(maxConcurrentLocateRequestPerTable) && !tableCache.isPending(req)) {<a name="line.435"></a> +<span class="sourceLineNo">436</span> tableCache.send(req);<a name="line.436"></a> +<span class="sourceLineNo">437</span> sendRequest = true;<a name="line.437"></a> +<span class="sourceLineNo">438</span> }<a name="line.438"></a> +<span class="sourceLineNo">439</span> }<a name="line.439"></a> +<span class="sourceLineNo">440</span> }<a name="line.440"></a> +<span class="sourceLineNo">441</span> if (sendRequest) {<a name="line.441"></a> +<span class="sourceLineNo">442</span> locateInMeta(tableName, req);<a name="line.442"></a> +<span 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class="sourceLineNo">453</span> // algorithm to locate it.<a name="line.453"></a> +<span class="sourceLineNo">454</span> if (locateType.equals(RegionLocateType.AFTER)) {<a name="line.454"></a> +<span class="sourceLineNo">455</span> row = createClosestRowAfter(row);<a name="line.455"></a> <span class="sourceLineNo">456</span> }<a name="line.456"></a> -<span class="sourceLineNo">457</span> return tableCache.cache.get(l.getRegion().getStartKey());<a name="line.457"></a> -<span class="sourceLineNo">458</span> }, this::addToCache, this::removeFromCache);<a name="line.458"></a> +<span class="sourceLineNo">457</span> return getRegionLocationInternal(tableName, row, RegionLocateType.CURRENT, reload);<a name="line.457"></a> +<span class="sourceLineNo">458</span> }<a name="line.458"></a> <span class="sourceLineNo">459</span> }<a name="line.459"></a> <span class="sourceLineNo">460</span><a name="line.460"></a> -<span class="sourceLineNo">461</span> void clearCache(TableName tableName) {<a 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<TRUNCATED>
