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 2018/10/12 14:53:02 UTC
[07/51] [partial] hbase-site git commit: Published site at
fa5fa6ecdd071b72b58971058ff3ab9d28c3e709.
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/d1341859/devapidocs/src-html/org/apache/hadoop/hbase/wal/RegionGroupingProvider.Strategies.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/wal/RegionGroupingProvider.Strategies.html b/devapidocs/src-html/org/apache/hadoop/hbase/wal/RegionGroupingProvider.Strategies.html
index 2142742..be2a512 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/wal/RegionGroupingProvider.Strategies.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/wal/RegionGroupingProvider.Strategies.html
@@ -129,174 +129,171 @@
<span class="sourceLineNo">121</span><a name="line.121"></a>
<span class="sourceLineNo">122</span> /** delegate provider for WAL creation/roll/close */<a name="line.122"></a>
<span class="sourceLineNo">123</span> public static final String DELEGATE_PROVIDER = "hbase.wal.regiongrouping.delegate.provider";<a name="line.123"></a>
-<span class="sourceLineNo">124</span> public static final String DELEGATE_PROVIDER_CLASS =<a name="line.124"></a>
-<span class="sourceLineNo">125</span> "hbase.wal.regiongrouping.delegate.provider.class";<a name="line.125"></a>
-<span class="sourceLineNo">126</span> public static final String DEFAULT_DELEGATE_PROVIDER = WALFactory.Providers.defaultProvider<a name="line.126"></a>
-<span class="sourceLineNo">127</span> .name();<a name="line.127"></a>
+<span class="sourceLineNo">124</span> public static final String DEFAULT_DELEGATE_PROVIDER = WALFactory.Providers.defaultProvider<a name="line.124"></a>
+<span class="sourceLineNo">125</span> .name();<a name="line.125"></a>
+<span class="sourceLineNo">126</span><a name="line.126"></a>
+<span class="sourceLineNo">127</span> private static final String META_WAL_GROUP_NAME = "meta";<a name="line.127"></a>
<span class="sourceLineNo">128</span><a name="line.128"></a>
-<span class="sourceLineNo">129</span> private static final String META_WAL_GROUP_NAME = "meta";<a name="line.129"></a>
-<span class="sourceLineNo">130</span><a name="line.130"></a>
-<span class="sourceLineNo">131</span> /** A group-provider mapping, make sure one-one rather than many-one mapping */<a name="line.131"></a>
-<span class="sourceLineNo">132</span> private final ConcurrentMap<String, WALProvider> cached = new ConcurrentHashMap<>();<a name="line.132"></a>
+<span class="sourceLineNo">129</span> /** A group-provider mapping, make sure one-one rather than many-one mapping */<a name="line.129"></a>
+<span class="sourceLineNo">130</span> private final ConcurrentMap<String, WALProvider> cached = new ConcurrentHashMap<>();<a name="line.130"></a>
+<span class="sourceLineNo">131</span><a name="line.131"></a>
+<span class="sourceLineNo">132</span> private final KeyLocker<String> createLock = new KeyLocker<>();<a name="line.132"></a>
<span class="sourceLineNo">133</span><a name="line.133"></a>
-<span class="sourceLineNo">134</span> private final KeyLocker<String> createLock = new KeyLocker<>();<a name="line.134"></a>
-<span class="sourceLineNo">135</span><a name="line.135"></a>
-<span class="sourceLineNo">136</span> private RegionGroupingStrategy strategy;<a name="line.136"></a>
-<span class="sourceLineNo">137</span> private WALFactory factory;<a name="line.137"></a>
-<span class="sourceLineNo">138</span> private Configuration conf;<a name="line.138"></a>
-<span class="sourceLineNo">139</span> private List<WALActionsListener> listeners = new ArrayList<>();<a name="line.139"></a>
-<span class="sourceLineNo">140</span> private String providerId;<a name="line.140"></a>
-<span class="sourceLineNo">141</span> private Class<? extends WALProvider> providerClass;<a name="line.141"></a>
-<span class="sourceLineNo">142</span><a name="line.142"></a>
-<span class="sourceLineNo">143</span> @Override<a name="line.143"></a>
-<span class="sourceLineNo">144</span> public void init(WALFactory factory, Configuration conf, String providerId) throws IOException {<a name="line.144"></a>
-<span class="sourceLineNo">145</span> if (null != strategy) {<a name="line.145"></a>
-<span class="sourceLineNo">146</span> throw new IllegalStateException("WALProvider.init should only be called once.");<a name="line.146"></a>
-<span class="sourceLineNo">147</span> }<a name="line.147"></a>
-<span class="sourceLineNo">148</span> this.conf = conf;<a name="line.148"></a>
-<span class="sourceLineNo">149</span> this.factory = factory;<a name="line.149"></a>
-<span class="sourceLineNo">150</span> StringBuilder sb = new StringBuilder().append(factory.factoryId);<a name="line.150"></a>
-<span class="sourceLineNo">151</span> if (providerId != null) {<a name="line.151"></a>
-<span class="sourceLineNo">152</span> if (providerId.startsWith(WAL_FILE_NAME_DELIMITER)) {<a name="line.152"></a>
-<span class="sourceLineNo">153</span> sb.append(providerId);<a name="line.153"></a>
-<span class="sourceLineNo">154</span> } else {<a name="line.154"></a>
-<span class="sourceLineNo">155</span> sb.append(WAL_FILE_NAME_DELIMITER).append(providerId);<a name="line.155"></a>
-<span class="sourceLineNo">156</span> }<a name="line.156"></a>
-<span class="sourceLineNo">157</span> }<a name="line.157"></a>
-<span class="sourceLineNo">158</span> this.providerId = sb.toString();<a name="line.158"></a>
-<span class="sourceLineNo">159</span> this.strategy = getStrategy(conf, REGION_GROUPING_STRATEGY, DEFAULT_REGION_GROUPING_STRATEGY);<a name="line.159"></a>
-<span class="sourceLineNo">160</span> this.providerClass = factory.getProviderClass(DELEGATE_PROVIDER_CLASS, DELEGATE_PROVIDER,<a name="line.160"></a>
-<span class="sourceLineNo">161</span> DEFAULT_DELEGATE_PROVIDER);<a name="line.161"></a>
-<span class="sourceLineNo">162</span> }<a name="line.162"></a>
-<span class="sourceLineNo">163</span><a name="line.163"></a>
-<span class="sourceLineNo">164</span> private WALProvider createProvider(String group) throws IOException {<a name="line.164"></a>
-<span class="sourceLineNo">165</span> WALProvider provider = WALFactory.createProvider(providerClass);<a name="line.165"></a>
-<span class="sourceLineNo">166</span> provider.init(factory, conf,<a name="line.166"></a>
-<span class="sourceLineNo">167</span> META_WAL_PROVIDER_ID.equals(providerId) ? META_WAL_PROVIDER_ID : group);<a name="line.167"></a>
-<span class="sourceLineNo">168</span> provider.addWALActionsListener(new MetricsWAL());<a name="line.168"></a>
-<span class="sourceLineNo">169</span> return provider;<a name="line.169"></a>
-<span class="sourceLineNo">170</span> }<a name="line.170"></a>
-<span class="sourceLineNo">171</span><a name="line.171"></a>
-<span class="sourceLineNo">172</span> @Override<a name="line.172"></a>
-<span class="sourceLineNo">173</span> public List<WAL> getWALs() {<a name="line.173"></a>
-<span class="sourceLineNo">174</span> return cached.values().stream().flatMap(p -> p.getWALs().stream()).collect(Collectors.toList());<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 WAL getWAL(String group) throws IOException {<a name="line.177"></a>
-<span class="sourceLineNo">178</span> WALProvider provider = cached.get(group);<a name="line.178"></a>
-<span class="sourceLineNo">179</span> if (provider == null) {<a name="line.179"></a>
-<span class="sourceLineNo">180</span> Lock lock = createLock.acquireLock(group);<a name="line.180"></a>
-<span class="sourceLineNo">181</span> try {<a name="line.181"></a>
-<span class="sourceLineNo">182</span> provider = cached.get(group);<a name="line.182"></a>
-<span class="sourceLineNo">183</span> if (provider == null) {<a name="line.183"></a>
-<span class="sourceLineNo">184</span> provider = createProvider(group);<a name="line.184"></a>
-<span class="sourceLineNo">185</span> listeners.forEach(provider::addWALActionsListener);<a name="line.185"></a>
-<span class="sourceLineNo">186</span> cached.put(group, provider);<a name="line.186"></a>
-<span class="sourceLineNo">187</span> }<a name="line.187"></a>
-<span class="sourceLineNo">188</span> } finally {<a name="line.188"></a>
-<span class="sourceLineNo">189</span> lock.unlock();<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 provider.getWAL(null);<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> @Override<a name="line.195"></a>
-<span class="sourceLineNo">196</span> public WAL getWAL(RegionInfo region) throws IOException {<a name="line.196"></a>
-<span class="sourceLineNo">197</span> String group;<a name="line.197"></a>
-<span class="sourceLineNo">198</span> if (META_WAL_PROVIDER_ID.equals(this.providerId)) {<a name="line.198"></a>
-<span class="sourceLineNo">199</span> group = META_WAL_GROUP_NAME;<a name="line.199"></a>
-<span class="sourceLineNo">200</span> } else {<a name="line.200"></a>
-<span class="sourceLineNo">201</span> byte[] id;<a name="line.201"></a>
-<span class="sourceLineNo">202</span> byte[] namespace;<a name="line.202"></a>
-<span class="sourceLineNo">203</span> if (region != null) {<a name="line.203"></a>
-<span class="sourceLineNo">204</span> id = region.getEncodedNameAsBytes();<a name="line.204"></a>
-<span class="sourceLineNo">205</span> namespace = region.getTable().getNamespace();<a name="line.205"></a>
-<span class="sourceLineNo">206</span> } else {<a name="line.206"></a>
-<span class="sourceLineNo">207</span> id = HConstants.EMPTY_BYTE_ARRAY;<a name="line.207"></a>
-<span class="sourceLineNo">208</span> namespace = null;<a name="line.208"></a>
-<span class="sourceLineNo">209</span> }<a name="line.209"></a>
-<span class="sourceLineNo">210</span> group = strategy.group(id, namespace);<a name="line.210"></a>
-<span class="sourceLineNo">211</span> }<a name="line.211"></a>
-<span class="sourceLineNo">212</span> return getWAL(group);<a name="line.212"></a>
-<span class="sourceLineNo">213</span> }<a name="line.213"></a>
-<span class="sourceLineNo">214</span><a name="line.214"></a>
-<span class="sourceLineNo">215</span> @Override<a name="line.215"></a>
-<span class="sourceLineNo">216</span> public void shutdown() throws IOException {<a name="line.216"></a>
-<span class="sourceLineNo">217</span> // save the last exception and rethrow<a name="line.217"></a>
-<span class="sourceLineNo">218</span> IOException failure = null;<a name="line.218"></a>
-<span class="sourceLineNo">219</span> for (WALProvider provider: cached.values()) {<a name="line.219"></a>
-<span class="sourceLineNo">220</span> try {<a name="line.220"></a>
-<span class="sourceLineNo">221</span> provider.shutdown();<a name="line.221"></a>
-<span class="sourceLineNo">222</span> } catch (IOException e) {<a name="line.222"></a>
-<span class="sourceLineNo">223</span> LOG.error("Problem shutting down wal provider '" + provider + "': " + e.getMessage());<a name="line.223"></a>
-<span class="sourceLineNo">224</span> if (LOG.isDebugEnabled()) {<a name="line.224"></a>
-<span class="sourceLineNo">225</span> LOG.debug("Details of problem shutting down wal provider '" + provider + "'", e);<a name="line.225"></a>
-<span class="sourceLineNo">226</span> }<a name="line.226"></a>
-<span class="sourceLineNo">227</span> failure = e;<a name="line.227"></a>
-<span class="sourceLineNo">228</span> }<a name="line.228"></a>
+<span class="sourceLineNo">134</span> private RegionGroupingStrategy strategy;<a name="line.134"></a>
+<span class="sourceLineNo">135</span> private WALFactory factory;<a name="line.135"></a>
+<span class="sourceLineNo">136</span> private Configuration conf;<a name="line.136"></a>
+<span class="sourceLineNo">137</span> private List<WALActionsListener> listeners = new ArrayList<>();<a name="line.137"></a>
+<span class="sourceLineNo">138</span> private String providerId;<a name="line.138"></a>
+<span class="sourceLineNo">139</span> private Class<? extends WALProvider> providerClass;<a name="line.139"></a>
+<span class="sourceLineNo">140</span><a name="line.140"></a>
+<span class="sourceLineNo">141</span> @Override<a name="line.141"></a>
+<span class="sourceLineNo">142</span> public void init(WALFactory factory, Configuration conf, String providerId) throws IOException {<a name="line.142"></a>
+<span class="sourceLineNo">143</span> if (null != strategy) {<a name="line.143"></a>
+<span class="sourceLineNo">144</span> throw new IllegalStateException("WALProvider.init should only be called once.");<a name="line.144"></a>
+<span class="sourceLineNo">145</span> }<a name="line.145"></a>
+<span class="sourceLineNo">146</span> this.conf = conf;<a name="line.146"></a>
+<span class="sourceLineNo">147</span> this.factory = factory;<a name="line.147"></a>
+<span class="sourceLineNo">148</span> StringBuilder sb = new StringBuilder().append(factory.factoryId);<a name="line.148"></a>
+<span class="sourceLineNo">149</span> if (providerId != null) {<a name="line.149"></a>
+<span class="sourceLineNo">150</span> if (providerId.startsWith(WAL_FILE_NAME_DELIMITER)) {<a name="line.150"></a>
+<span class="sourceLineNo">151</span> sb.append(providerId);<a name="line.151"></a>
+<span class="sourceLineNo">152</span> } else {<a name="line.152"></a>
+<span class="sourceLineNo">153</span> sb.append(WAL_FILE_NAME_DELIMITER).append(providerId);<a name="line.153"></a>
+<span class="sourceLineNo">154</span> }<a name="line.154"></a>
+<span class="sourceLineNo">155</span> }<a name="line.155"></a>
+<span class="sourceLineNo">156</span> this.providerId = sb.toString();<a name="line.156"></a>
+<span class="sourceLineNo">157</span> this.strategy = getStrategy(conf, REGION_GROUPING_STRATEGY, DEFAULT_REGION_GROUPING_STRATEGY);<a name="line.157"></a>
+<span class="sourceLineNo">158</span> this.providerClass = factory.getProviderClass(DELEGATE_PROVIDER, DEFAULT_DELEGATE_PROVIDER);<a name="line.158"></a>
+<span class="sourceLineNo">159</span> }<a name="line.159"></a>
+<span class="sourceLineNo">160</span><a name="line.160"></a>
+<span class="sourceLineNo">161</span> private WALProvider createProvider(String group) throws IOException {<a name="line.161"></a>
+<span class="sourceLineNo">162</span> WALProvider provider = WALFactory.createProvider(providerClass);<a name="line.162"></a>
+<span class="sourceLineNo">163</span> provider.init(factory, conf,<a name="line.163"></a>
+<span class="sourceLineNo">164</span> META_WAL_PROVIDER_ID.equals(providerId) ? META_WAL_PROVIDER_ID : group);<a name="line.164"></a>
+<span class="sourceLineNo">165</span> provider.addWALActionsListener(new MetricsWAL());<a name="line.165"></a>
+<span class="sourceLineNo">166</span> return provider;<a name="line.166"></a>
+<span class="sourceLineNo">167</span> }<a name="line.167"></a>
+<span class="sourceLineNo">168</span><a name="line.168"></a>
+<span class="sourceLineNo">169</span> @Override<a name="line.169"></a>
+<span class="sourceLineNo">170</span> public List<WAL> getWALs() {<a name="line.170"></a>
+<span class="sourceLineNo">171</span> return cached.values().stream().flatMap(p -> p.getWALs().stream()).collect(Collectors.toList());<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 WAL getWAL(String group) throws IOException {<a name="line.174"></a>
+<span class="sourceLineNo">175</span> WALProvider provider = cached.get(group);<a name="line.175"></a>
+<span class="sourceLineNo">176</span> if (provider == null) {<a name="line.176"></a>
+<span class="sourceLineNo">177</span> Lock lock = createLock.acquireLock(group);<a name="line.177"></a>
+<span class="sourceLineNo">178</span> try {<a name="line.178"></a>
+<span class="sourceLineNo">179</span> provider = cached.get(group);<a name="line.179"></a>
+<span class="sourceLineNo">180</span> if (provider == null) {<a name="line.180"></a>
+<span class="sourceLineNo">181</span> provider = createProvider(group);<a name="line.181"></a>
+<span class="sourceLineNo">182</span> listeners.forEach(provider::addWALActionsListener);<a name="line.182"></a>
+<span class="sourceLineNo">183</span> cached.put(group, provider);<a name="line.183"></a>
+<span class="sourceLineNo">184</span> }<a name="line.184"></a>
+<span class="sourceLineNo">185</span> } finally {<a name="line.185"></a>
+<span class="sourceLineNo">186</span> lock.unlock();<a name="line.186"></a>
+<span class="sourceLineNo">187</span> }<a name="line.187"></a>
+<span class="sourceLineNo">188</span> }<a name="line.188"></a>
+<span class="sourceLineNo">189</span> return provider.getWAL(null);<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> @Override<a name="line.192"></a>
+<span class="sourceLineNo">193</span> public WAL getWAL(RegionInfo region) throws IOException {<a name="line.193"></a>
+<span class="sourceLineNo">194</span> String group;<a name="line.194"></a>
+<span class="sourceLineNo">195</span> if (META_WAL_PROVIDER_ID.equals(this.providerId)) {<a name="line.195"></a>
+<span class="sourceLineNo">196</span> group = META_WAL_GROUP_NAME;<a name="line.196"></a>
+<span class="sourceLineNo">197</span> } else {<a name="line.197"></a>
+<span class="sourceLineNo">198</span> byte[] id;<a name="line.198"></a>
+<span class="sourceLineNo">199</span> byte[] namespace;<a name="line.199"></a>
+<span class="sourceLineNo">200</span> if (region != null) {<a name="line.200"></a>
+<span class="sourceLineNo">201</span> id = region.getEncodedNameAsBytes();<a name="line.201"></a>
+<span class="sourceLineNo">202</span> namespace = region.getTable().getNamespace();<a name="line.202"></a>
+<span class="sourceLineNo">203</span> } else {<a name="line.203"></a>
+<span class="sourceLineNo">204</span> id = HConstants.EMPTY_BYTE_ARRAY;<a name="line.204"></a>
+<span class="sourceLineNo">205</span> namespace = null;<a name="line.205"></a>
+<span class="sourceLineNo">206</span> }<a name="line.206"></a>
+<span class="sourceLineNo">207</span> group = strategy.group(id, namespace);<a name="line.207"></a>
+<span class="sourceLineNo">208</span> }<a name="line.208"></a>
+<span class="sourceLineNo">209</span> return getWAL(group);<a name="line.209"></a>
+<span class="sourceLineNo">210</span> }<a name="line.210"></a>
+<span class="sourceLineNo">211</span><a name="line.211"></a>
+<span class="sourceLineNo">212</span> @Override<a name="line.212"></a>
+<span class="sourceLineNo">213</span> public void shutdown() throws IOException {<a name="line.213"></a>
+<span class="sourceLineNo">214</span> // save the last exception and rethrow<a name="line.214"></a>
+<span class="sourceLineNo">215</span> IOException failure = null;<a name="line.215"></a>
+<span class="sourceLineNo">216</span> for (WALProvider provider: cached.values()) {<a name="line.216"></a>
+<span class="sourceLineNo">217</span> try {<a name="line.217"></a>
+<span class="sourceLineNo">218</span> provider.shutdown();<a name="line.218"></a>
+<span class="sourceLineNo">219</span> } catch (IOException e) {<a name="line.219"></a>
+<span class="sourceLineNo">220</span> LOG.error("Problem shutting down wal provider '" + provider + "': " + e.getMessage());<a name="line.220"></a>
+<span class="sourceLineNo">221</span> if (LOG.isDebugEnabled()) {<a name="line.221"></a>
+<span class="sourceLineNo">222</span> LOG.debug("Details of problem shutting down wal provider '" + provider + "'", e);<a name="line.222"></a>
+<span class="sourceLineNo">223</span> }<a name="line.223"></a>
+<span class="sourceLineNo">224</span> failure = e;<a name="line.224"></a>
+<span class="sourceLineNo">225</span> }<a name="line.225"></a>
+<span class="sourceLineNo">226</span> }<a name="line.226"></a>
+<span class="sourceLineNo">227</span> if (failure != null) {<a name="line.227"></a>
+<span class="sourceLineNo">228</span> throw failure;<a name="line.228"></a>
<span class="sourceLineNo">229</span> }<a name="line.229"></a>
-<span class="sourceLineNo">230</span> if (failure != null) {<a name="line.230"></a>
-<span class="sourceLineNo">231</span> throw failure;<a name="line.231"></a>
-<span class="sourceLineNo">232</span> }<a name="line.232"></a>
-<span class="sourceLineNo">233</span> }<a name="line.233"></a>
-<span class="sourceLineNo">234</span><a name="line.234"></a>
-<span class="sourceLineNo">235</span> @Override<a name="line.235"></a>
-<span class="sourceLineNo">236</span> public void close() throws IOException {<a name="line.236"></a>
-<span class="sourceLineNo">237</span> // save the last exception and rethrow<a name="line.237"></a>
-<span class="sourceLineNo">238</span> IOException failure = null;<a name="line.238"></a>
-<span class="sourceLineNo">239</span> for (WALProvider provider : cached.values()) {<a name="line.239"></a>
-<span class="sourceLineNo">240</span> try {<a name="line.240"></a>
-<span class="sourceLineNo">241</span> provider.close();<a name="line.241"></a>
-<span class="sourceLineNo">242</span> } catch (IOException e) {<a name="line.242"></a>
-<span class="sourceLineNo">243</span> LOG.error("Problem closing wal provider '" + provider + "': " + e.getMessage());<a name="line.243"></a>
-<span class="sourceLineNo">244</span> if (LOG.isDebugEnabled()) {<a name="line.244"></a>
-<span class="sourceLineNo">245</span> LOG.debug("Details of problem closing wal provider '" + provider + "'", e);<a name="line.245"></a>
-<span class="sourceLineNo">246</span> }<a name="line.246"></a>
-<span class="sourceLineNo">247</span> failure = e;<a name="line.247"></a>
-<span class="sourceLineNo">248</span> }<a name="line.248"></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> @Override<a name="line.232"></a>
+<span class="sourceLineNo">233</span> public void close() throws IOException {<a name="line.233"></a>
+<span class="sourceLineNo">234</span> // save the last exception and rethrow<a name="line.234"></a>
+<span class="sourceLineNo">235</span> IOException failure = null;<a name="line.235"></a>
+<span class="sourceLineNo">236</span> for (WALProvider provider : cached.values()) {<a name="line.236"></a>
+<span class="sourceLineNo">237</span> try {<a name="line.237"></a>
+<span class="sourceLineNo">238</span> provider.close();<a name="line.238"></a>
+<span class="sourceLineNo">239</span> } catch (IOException e) {<a name="line.239"></a>
+<span class="sourceLineNo">240</span> LOG.error("Problem closing wal provider '" + provider + "': " + e.getMessage());<a name="line.240"></a>
+<span class="sourceLineNo">241</span> if (LOG.isDebugEnabled()) {<a name="line.241"></a>
+<span class="sourceLineNo">242</span> LOG.debug("Details of problem closing wal provider '" + provider + "'", e);<a name="line.242"></a>
+<span class="sourceLineNo">243</span> }<a name="line.243"></a>
+<span class="sourceLineNo">244</span> failure = e;<a name="line.244"></a>
+<span class="sourceLineNo">245</span> }<a name="line.245"></a>
+<span class="sourceLineNo">246</span> }<a name="line.246"></a>
+<span class="sourceLineNo">247</span> if (failure != null) {<a name="line.247"></a>
+<span class="sourceLineNo">248</span> throw failure;<a name="line.248"></a>
<span class="sourceLineNo">249</span> }<a name="line.249"></a>
-<span class="sourceLineNo">250</span> if (failure != null) {<a name="line.250"></a>
-<span class="sourceLineNo">251</span> throw failure;<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> static class IdentityGroupingStrategy implements RegionGroupingStrategy {<a name="line.255"></a>
-<span class="sourceLineNo">256</span> @Override<a name="line.256"></a>
-<span class="sourceLineNo">257</span> public void init(Configuration config, String providerId) {}<a name="line.257"></a>
-<span class="sourceLineNo">258</span> @Override<a name="line.258"></a>
-<span class="sourceLineNo">259</span> public String group(final byte[] identifier, final byte[] namespace) {<a name="line.259"></a>
-<span class="sourceLineNo">260</span> return Bytes.toString(identifier);<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><a name="line.263"></a>
-<span class="sourceLineNo">264</span> @Override<a name="line.264"></a>
-<span class="sourceLineNo">265</span> public long getNumLogFiles() {<a name="line.265"></a>
-<span class="sourceLineNo">266</span> long numLogFiles = 0;<a name="line.266"></a>
-<span class="sourceLineNo">267</span> for (WALProvider provider : cached.values()) {<a name="line.267"></a>
-<span class="sourceLineNo">268</span> numLogFiles += provider.getNumLogFiles();<a name="line.268"></a>
-<span class="sourceLineNo">269</span> }<a name="line.269"></a>
-<span class="sourceLineNo">270</span> return numLogFiles;<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> @Override<a name="line.273"></a>
-<span class="sourceLineNo">274</span> public long getLogFileSize() {<a name="line.274"></a>
-<span class="sourceLineNo">275</span> long logFileSize = 0;<a name="line.275"></a>
-<span class="sourceLineNo">276</span> for (WALProvider provider : cached.values()) {<a name="line.276"></a>
-<span class="sourceLineNo">277</span> logFileSize += provider.getLogFileSize();<a name="line.277"></a>
-<span class="sourceLineNo">278</span> }<a name="line.278"></a>
-<span class="sourceLineNo">279</span> return logFileSize;<a name="line.279"></a>
-<span class="sourceLineNo">280</span> }<a name="line.280"></a>
-<span class="sourceLineNo">281</span><a name="line.281"></a>
-<span class="sourceLineNo">282</span> @Override<a name="line.282"></a>
-<span class="sourceLineNo">283</span> public void addWALActionsListener(WALActionsListener listener) {<a name="line.283"></a>
-<span class="sourceLineNo">284</span> // Notice that there is an assumption that this method must be called before the getWAL above,<a name="line.284"></a>
-<span class="sourceLineNo">285</span> // so we can make sure there is no sub WALProvider yet, so we only add the listener to our<a name="line.285"></a>
-<span class="sourceLineNo">286</span> // listeners list without calling addWALActionListener for each WALProvider. Although it is no<a name="line.286"></a>
-<span class="sourceLineNo">287</span> // hurt to execute an extra loop to call addWALActionListener for each WALProvider, but if the<a name="line.287"></a>
-<span class="sourceLineNo">288</span> // extra code actually works, then we will have other big problems. So leave it as is.<a name="line.288"></a>
-<span class="sourceLineNo">289</span> listeners.add(listener);<a name="line.289"></a>
-<span class="sourceLineNo">290</span> }<a name="line.290"></a>
-<span class="sourceLineNo">291</span>}<a name="line.291"></a>
+<span class="sourceLineNo">250</span> }<a name="line.250"></a>
+<span class="sourceLineNo">251</span><a name="line.251"></a>
+<span class="sourceLineNo">252</span> static class IdentityGroupingStrategy implements RegionGroupingStrategy {<a name="line.252"></a>
+<span class="sourceLineNo">253</span> @Override<a name="line.253"></a>
+<span class="sourceLineNo">254</span> public void init(Configuration config, String providerId) {}<a name="line.254"></a>
+<span class="sourceLineNo">255</span> @Override<a name="line.255"></a>
+<span class="sourceLineNo">256</span> public String group(final byte[] identifier, final byte[] namespace) {<a name="line.256"></a>
+<span class="sourceLineNo">257</span> return Bytes.toString(identifier);<a name="line.257"></a>
+<span class="sourceLineNo">258</span> }<a name="line.258"></a>
+<span class="sourceLineNo">259</span> }<a name="line.259"></a>
+<span class="sourceLineNo">260</span><a name="line.260"></a>
+<span class="sourceLineNo">261</span> @Override<a name="line.261"></a>
+<span class="sourceLineNo">262</span> public long getNumLogFiles() {<a name="line.262"></a>
+<span class="sourceLineNo">263</span> long numLogFiles = 0;<a name="line.263"></a>
+<span class="sourceLineNo">264</span> for (WALProvider provider : cached.values()) {<a name="line.264"></a>
+<span class="sourceLineNo">265</span> numLogFiles += provider.getNumLogFiles();<a name="line.265"></a>
+<span class="sourceLineNo">266</span> }<a name="line.266"></a>
+<span class="sourceLineNo">267</span> return numLogFiles;<a name="line.267"></a>
+<span class="sourceLineNo">268</span> }<a name="line.268"></a>
+<span class="sourceLineNo">269</span><a name="line.269"></a>
+<span class="sourceLineNo">270</span> @Override<a name="line.270"></a>
+<span class="sourceLineNo">271</span> public long getLogFileSize() {<a name="line.271"></a>
+<span class="sourceLineNo">272</span> long logFileSize = 0;<a name="line.272"></a>
+<span class="sourceLineNo">273</span> for (WALProvider provider : cached.values()) {<a name="line.273"></a>
+<span class="sourceLineNo">274</span> logFileSize += provider.getLogFileSize();<a name="line.274"></a>
+<span class="sourceLineNo">275</span> }<a name="line.275"></a>
+<span class="sourceLineNo">276</span> return logFileSize;<a name="line.276"></a>
+<span class="sourceLineNo">277</span> }<a name="line.277"></a>
+<span class="sourceLineNo">278</span><a name="line.278"></a>
+<span class="sourceLineNo">279</span> @Override<a name="line.279"></a>
+<span class="sourceLineNo">280</span> public void addWALActionsListener(WALActionsListener listener) {<a name="line.280"></a>
+<span class="sourceLineNo">281</span> // Notice that there is an assumption that this method must be called before the getWAL above,<a name="line.281"></a>
+<span class="sourceLineNo">282</span> // so we can make sure there is no sub WALProvider yet, so we only add the listener to our<a name="line.282"></a>
+<span class="sourceLineNo">283</span> // listeners list without calling addWALActionListener for each WALProvider. Although it is no<a name="line.283"></a>
+<span class="sourceLineNo">284</span> // hurt to execute an extra loop to call addWALActionListener for each WALProvider, but if the<a name="line.284"></a>
+<span class="sourceLineNo">285</span> // extra code actually works, then we will have other big problems. So leave it as is.<a name="line.285"></a>
+<span class="sourceLineNo">286</span> listeners.add(listener);<a name="line.286"></a>
+<span class="sourceLineNo">287</span> }<a name="line.287"></a>
+<span class="sourceLineNo">288</span>}<a name="line.288"></a>
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/d1341859/devapidocs/src-html/org/apache/hadoop/hbase/wal/RegionGroupingProvider.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/wal/RegionGroupingProvider.html b/devapidocs/src-html/org/apache/hadoop/hbase/wal/RegionGroupingProvider.html
index 2142742..be2a512 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/wal/RegionGroupingProvider.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/wal/RegionGroupingProvider.html
@@ -129,174 +129,171 @@
<span class="sourceLineNo">121</span><a name="line.121"></a>
<span class="sourceLineNo">122</span> /** delegate provider for WAL creation/roll/close */<a name="line.122"></a>
<span class="sourceLineNo">123</span> public static final String DELEGATE_PROVIDER = "hbase.wal.regiongrouping.delegate.provider";<a name="line.123"></a>
-<span class="sourceLineNo">124</span> public static final String DELEGATE_PROVIDER_CLASS =<a name="line.124"></a>
-<span class="sourceLineNo">125</span> "hbase.wal.regiongrouping.delegate.provider.class";<a name="line.125"></a>
-<span class="sourceLineNo">126</span> public static final String DEFAULT_DELEGATE_PROVIDER = WALFactory.Providers.defaultProvider<a name="line.126"></a>
-<span class="sourceLineNo">127</span> .name();<a name="line.127"></a>
+<span class="sourceLineNo">124</span> public static final String DEFAULT_DELEGATE_PROVIDER = WALFactory.Providers.defaultProvider<a name="line.124"></a>
+<span class="sourceLineNo">125</span> .name();<a name="line.125"></a>
+<span class="sourceLineNo">126</span><a name="line.126"></a>
+<span class="sourceLineNo">127</span> private static final String META_WAL_GROUP_NAME = "meta";<a name="line.127"></a>
<span class="sourceLineNo">128</span><a name="line.128"></a>
-<span class="sourceLineNo">129</span> private static final String META_WAL_GROUP_NAME = "meta";<a name="line.129"></a>
-<span class="sourceLineNo">130</span><a name="line.130"></a>
-<span class="sourceLineNo">131</span> /** A group-provider mapping, make sure one-one rather than many-one mapping */<a name="line.131"></a>
-<span class="sourceLineNo">132</span> private final ConcurrentMap<String, WALProvider> cached = new ConcurrentHashMap<>();<a name="line.132"></a>
+<span class="sourceLineNo">129</span> /** A group-provider mapping, make sure one-one rather than many-one mapping */<a name="line.129"></a>
+<span class="sourceLineNo">130</span> private final ConcurrentMap<String, WALProvider> cached = new ConcurrentHashMap<>();<a name="line.130"></a>
+<span class="sourceLineNo">131</span><a name="line.131"></a>
+<span class="sourceLineNo">132</span> private final KeyLocker<String> createLock = new KeyLocker<>();<a name="line.132"></a>
<span class="sourceLineNo">133</span><a name="line.133"></a>
-<span class="sourceLineNo">134</span> private final KeyLocker<String> createLock = new KeyLocker<>();<a name="line.134"></a>
-<span class="sourceLineNo">135</span><a name="line.135"></a>
-<span class="sourceLineNo">136</span> private RegionGroupingStrategy strategy;<a name="line.136"></a>
-<span class="sourceLineNo">137</span> private WALFactory factory;<a name="line.137"></a>
-<span class="sourceLineNo">138</span> private Configuration conf;<a name="line.138"></a>
-<span class="sourceLineNo">139</span> private List<WALActionsListener> listeners = new ArrayList<>();<a name="line.139"></a>
-<span class="sourceLineNo">140</span> private String providerId;<a name="line.140"></a>
-<span class="sourceLineNo">141</span> private Class<? extends WALProvider> providerClass;<a name="line.141"></a>
-<span class="sourceLineNo">142</span><a name="line.142"></a>
-<span class="sourceLineNo">143</span> @Override<a name="line.143"></a>
-<span class="sourceLineNo">144</span> public void init(WALFactory factory, Configuration conf, String providerId) throws IOException {<a name="line.144"></a>
-<span class="sourceLineNo">145</span> if (null != strategy) {<a name="line.145"></a>
-<span class="sourceLineNo">146</span> throw new IllegalStateException("WALProvider.init should only be called once.");<a name="line.146"></a>
-<span class="sourceLineNo">147</span> }<a name="line.147"></a>
-<span class="sourceLineNo">148</span> this.conf = conf;<a name="line.148"></a>
-<span class="sourceLineNo">149</span> this.factory = factory;<a name="line.149"></a>
-<span class="sourceLineNo">150</span> StringBuilder sb = new StringBuilder().append(factory.factoryId);<a name="line.150"></a>
-<span class="sourceLineNo">151</span> if (providerId != null) {<a name="line.151"></a>
-<span class="sourceLineNo">152</span> if (providerId.startsWith(WAL_FILE_NAME_DELIMITER)) {<a name="line.152"></a>
-<span class="sourceLineNo">153</span> sb.append(providerId);<a name="line.153"></a>
-<span class="sourceLineNo">154</span> } else {<a name="line.154"></a>
-<span class="sourceLineNo">155</span> sb.append(WAL_FILE_NAME_DELIMITER).append(providerId);<a name="line.155"></a>
-<span class="sourceLineNo">156</span> }<a name="line.156"></a>
-<span class="sourceLineNo">157</span> }<a name="line.157"></a>
-<span class="sourceLineNo">158</span> this.providerId = sb.toString();<a name="line.158"></a>
-<span class="sourceLineNo">159</span> this.strategy = getStrategy(conf, REGION_GROUPING_STRATEGY, DEFAULT_REGION_GROUPING_STRATEGY);<a name="line.159"></a>
-<span class="sourceLineNo">160</span> this.providerClass = factory.getProviderClass(DELEGATE_PROVIDER_CLASS, DELEGATE_PROVIDER,<a name="line.160"></a>
-<span class="sourceLineNo">161</span> DEFAULT_DELEGATE_PROVIDER);<a name="line.161"></a>
-<span class="sourceLineNo">162</span> }<a name="line.162"></a>
-<span class="sourceLineNo">163</span><a name="line.163"></a>
-<span class="sourceLineNo">164</span> private WALProvider createProvider(String group) throws IOException {<a name="line.164"></a>
-<span class="sourceLineNo">165</span> WALProvider provider = WALFactory.createProvider(providerClass);<a name="line.165"></a>
-<span class="sourceLineNo">166</span> provider.init(factory, conf,<a name="line.166"></a>
-<span class="sourceLineNo">167</span> META_WAL_PROVIDER_ID.equals(providerId) ? META_WAL_PROVIDER_ID : group);<a name="line.167"></a>
-<span class="sourceLineNo">168</span> provider.addWALActionsListener(new MetricsWAL());<a name="line.168"></a>
-<span class="sourceLineNo">169</span> return provider;<a name="line.169"></a>
-<span class="sourceLineNo">170</span> }<a name="line.170"></a>
-<span class="sourceLineNo">171</span><a name="line.171"></a>
-<span class="sourceLineNo">172</span> @Override<a name="line.172"></a>
-<span class="sourceLineNo">173</span> public List<WAL> getWALs() {<a name="line.173"></a>
-<span class="sourceLineNo">174</span> return cached.values().stream().flatMap(p -> p.getWALs().stream()).collect(Collectors.toList());<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 WAL getWAL(String group) throws IOException {<a name="line.177"></a>
-<span class="sourceLineNo">178</span> WALProvider provider = cached.get(group);<a name="line.178"></a>
-<span class="sourceLineNo">179</span> if (provider == null) {<a name="line.179"></a>
-<span class="sourceLineNo">180</span> Lock lock = createLock.acquireLock(group);<a name="line.180"></a>
-<span class="sourceLineNo">181</span> try {<a name="line.181"></a>
-<span class="sourceLineNo">182</span> provider = cached.get(group);<a name="line.182"></a>
-<span class="sourceLineNo">183</span> if (provider == null) {<a name="line.183"></a>
-<span class="sourceLineNo">184</span> provider = createProvider(group);<a name="line.184"></a>
-<span class="sourceLineNo">185</span> listeners.forEach(provider::addWALActionsListener);<a name="line.185"></a>
-<span class="sourceLineNo">186</span> cached.put(group, provider);<a name="line.186"></a>
-<span class="sourceLineNo">187</span> }<a name="line.187"></a>
-<span class="sourceLineNo">188</span> } finally {<a name="line.188"></a>
-<span class="sourceLineNo">189</span> lock.unlock();<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 provider.getWAL(null);<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> @Override<a name="line.195"></a>
-<span class="sourceLineNo">196</span> public WAL getWAL(RegionInfo region) throws IOException {<a name="line.196"></a>
-<span class="sourceLineNo">197</span> String group;<a name="line.197"></a>
-<span class="sourceLineNo">198</span> if (META_WAL_PROVIDER_ID.equals(this.providerId)) {<a name="line.198"></a>
-<span class="sourceLineNo">199</span> group = META_WAL_GROUP_NAME;<a name="line.199"></a>
-<span class="sourceLineNo">200</span> } else {<a name="line.200"></a>
-<span class="sourceLineNo">201</span> byte[] id;<a name="line.201"></a>
-<span class="sourceLineNo">202</span> byte[] namespace;<a name="line.202"></a>
-<span class="sourceLineNo">203</span> if (region != null) {<a name="line.203"></a>
-<span class="sourceLineNo">204</span> id = region.getEncodedNameAsBytes();<a name="line.204"></a>
-<span class="sourceLineNo">205</span> namespace = region.getTable().getNamespace();<a name="line.205"></a>
-<span class="sourceLineNo">206</span> } else {<a name="line.206"></a>
-<span class="sourceLineNo">207</span> id = HConstants.EMPTY_BYTE_ARRAY;<a name="line.207"></a>
-<span class="sourceLineNo">208</span> namespace = null;<a name="line.208"></a>
-<span class="sourceLineNo">209</span> }<a name="line.209"></a>
-<span class="sourceLineNo">210</span> group = strategy.group(id, namespace);<a name="line.210"></a>
-<span class="sourceLineNo">211</span> }<a name="line.211"></a>
-<span class="sourceLineNo">212</span> return getWAL(group);<a name="line.212"></a>
-<span class="sourceLineNo">213</span> }<a name="line.213"></a>
-<span class="sourceLineNo">214</span><a name="line.214"></a>
-<span class="sourceLineNo">215</span> @Override<a name="line.215"></a>
-<span class="sourceLineNo">216</span> public void shutdown() throws IOException {<a name="line.216"></a>
-<span class="sourceLineNo">217</span> // save the last exception and rethrow<a name="line.217"></a>
-<span class="sourceLineNo">218</span> IOException failure = null;<a name="line.218"></a>
-<span class="sourceLineNo">219</span> for (WALProvider provider: cached.values()) {<a name="line.219"></a>
-<span class="sourceLineNo">220</span> try {<a name="line.220"></a>
-<span class="sourceLineNo">221</span> provider.shutdown();<a name="line.221"></a>
-<span class="sourceLineNo">222</span> } catch (IOException e) {<a name="line.222"></a>
-<span class="sourceLineNo">223</span> LOG.error("Problem shutting down wal provider '" + provider + "': " + e.getMessage());<a name="line.223"></a>
-<span class="sourceLineNo">224</span> if (LOG.isDebugEnabled()) {<a name="line.224"></a>
-<span class="sourceLineNo">225</span> LOG.debug("Details of problem shutting down wal provider '" + provider + "'", e);<a name="line.225"></a>
-<span class="sourceLineNo">226</span> }<a name="line.226"></a>
-<span class="sourceLineNo">227</span> failure = e;<a name="line.227"></a>
-<span class="sourceLineNo">228</span> }<a name="line.228"></a>
+<span class="sourceLineNo">134</span> private RegionGroupingStrategy strategy;<a name="line.134"></a>
+<span class="sourceLineNo">135</span> private WALFactory factory;<a name="line.135"></a>
+<span class="sourceLineNo">136</span> private Configuration conf;<a name="line.136"></a>
+<span class="sourceLineNo">137</span> private List<WALActionsListener> listeners = new ArrayList<>();<a name="line.137"></a>
+<span class="sourceLineNo">138</span> private String providerId;<a name="line.138"></a>
+<span class="sourceLineNo">139</span> private Class<? extends WALProvider> providerClass;<a name="line.139"></a>
+<span class="sourceLineNo">140</span><a name="line.140"></a>
+<span class="sourceLineNo">141</span> @Override<a name="line.141"></a>
+<span class="sourceLineNo">142</span> public void init(WALFactory factory, Configuration conf, String providerId) throws IOException {<a name="line.142"></a>
+<span class="sourceLineNo">143</span> if (null != strategy) {<a name="line.143"></a>
+<span class="sourceLineNo">144</span> throw new IllegalStateException("WALProvider.init should only be called once.");<a name="line.144"></a>
+<span class="sourceLineNo">145</span> }<a name="line.145"></a>
+<span class="sourceLineNo">146</span> this.conf = conf;<a name="line.146"></a>
+<span class="sourceLineNo">147</span> this.factory = factory;<a name="line.147"></a>
+<span class="sourceLineNo">148</span> StringBuilder sb = new StringBuilder().append(factory.factoryId);<a name="line.148"></a>
+<span class="sourceLineNo">149</span> if (providerId != null) {<a name="line.149"></a>
+<span class="sourceLineNo">150</span> if (providerId.startsWith(WAL_FILE_NAME_DELIMITER)) {<a name="line.150"></a>
+<span class="sourceLineNo">151</span> sb.append(providerId);<a name="line.151"></a>
+<span class="sourceLineNo">152</span> } else {<a name="line.152"></a>
+<span class="sourceLineNo">153</span> sb.append(WAL_FILE_NAME_DELIMITER).append(providerId);<a name="line.153"></a>
+<span class="sourceLineNo">154</span> }<a name="line.154"></a>
+<span class="sourceLineNo">155</span> }<a name="line.155"></a>
+<span class="sourceLineNo">156</span> this.providerId = sb.toString();<a name="line.156"></a>
+<span class="sourceLineNo">157</span> this.strategy = getStrategy(conf, REGION_GROUPING_STRATEGY, DEFAULT_REGION_GROUPING_STRATEGY);<a name="line.157"></a>
+<span class="sourceLineNo">158</span> this.providerClass = factory.getProviderClass(DELEGATE_PROVIDER, DEFAULT_DELEGATE_PROVIDER);<a name="line.158"></a>
+<span class="sourceLineNo">159</span> }<a name="line.159"></a>
+<span class="sourceLineNo">160</span><a name="line.160"></a>
+<span class="sourceLineNo">161</span> private WALProvider createProvider(String group) throws IOException {<a name="line.161"></a>
+<span class="sourceLineNo">162</span> WALProvider provider = WALFactory.createProvider(providerClass);<a name="line.162"></a>
+<span class="sourceLineNo">163</span> provider.init(factory, conf,<a name="line.163"></a>
+<span class="sourceLineNo">164</span> META_WAL_PROVIDER_ID.equals(providerId) ? META_WAL_PROVIDER_ID : group);<a name="line.164"></a>
+<span class="sourceLineNo">165</span> provider.addWALActionsListener(new MetricsWAL());<a name="line.165"></a>
+<span class="sourceLineNo">166</span> return provider;<a name="line.166"></a>
+<span class="sourceLineNo">167</span> }<a name="line.167"></a>
+<span class="sourceLineNo">168</span><a name="line.168"></a>
+<span class="sourceLineNo">169</span> @Override<a name="line.169"></a>
+<span class="sourceLineNo">170</span> public List<WAL> getWALs() {<a name="line.170"></a>
+<span class="sourceLineNo">171</span> return cached.values().stream().flatMap(p -> p.getWALs().stream()).collect(Collectors.toList());<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 WAL getWAL(String group) throws IOException {<a name="line.174"></a>
+<span class="sourceLineNo">175</span> WALProvider provider = cached.get(group);<a name="line.175"></a>
+<span class="sourceLineNo">176</span> if (provider == null) {<a name="line.176"></a>
+<span class="sourceLineNo">177</span> Lock lock = createLock.acquireLock(group);<a name="line.177"></a>
+<span class="sourceLineNo">178</span> try {<a name="line.178"></a>
+<span class="sourceLineNo">179</span> provider = cached.get(group);<a name="line.179"></a>
+<span class="sourceLineNo">180</span> if (provider == null) {<a name="line.180"></a>
+<span class="sourceLineNo">181</span> provider = createProvider(group);<a name="line.181"></a>
+<span class="sourceLineNo">182</span> listeners.forEach(provider::addWALActionsListener);<a name="line.182"></a>
+<span class="sourceLineNo">183</span> cached.put(group, provider);<a name="line.183"></a>
+<span class="sourceLineNo">184</span> }<a name="line.184"></a>
+<span class="sourceLineNo">185</span> } finally {<a name="line.185"></a>
+<span class="sourceLineNo">186</span> lock.unlock();<a name="line.186"></a>
+<span class="sourceLineNo">187</span> }<a name="line.187"></a>
+<span class="sourceLineNo">188</span> }<a name="line.188"></a>
+<span class="sourceLineNo">189</span> return provider.getWAL(null);<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> @Override<a name="line.192"></a>
+<span class="sourceLineNo">193</span> public WAL getWAL(RegionInfo region) throws IOException {<a name="line.193"></a>
+<span class="sourceLineNo">194</span> String group;<a name="line.194"></a>
+<span class="sourceLineNo">195</span> if (META_WAL_PROVIDER_ID.equals(this.providerId)) {<a name="line.195"></a>
+<span class="sourceLineNo">196</span> group = META_WAL_GROUP_NAME;<a name="line.196"></a>
+<span class="sourceLineNo">197</span> } else {<a name="line.197"></a>
+<span class="sourceLineNo">198</span> byte[] id;<a name="line.198"></a>
+<span class="sourceLineNo">199</span> byte[] namespace;<a name="line.199"></a>
+<span class="sourceLineNo">200</span> if (region != null) {<a name="line.200"></a>
+<span class="sourceLineNo">201</span> id = region.getEncodedNameAsBytes();<a name="line.201"></a>
+<span class="sourceLineNo">202</span> namespace = region.getTable().getNamespace();<a name="line.202"></a>
+<span class="sourceLineNo">203</span> } else {<a name="line.203"></a>
+<span class="sourceLineNo">204</span> id = HConstants.EMPTY_BYTE_ARRAY;<a name="line.204"></a>
+<span class="sourceLineNo">205</span> namespace = null;<a name="line.205"></a>
+<span class="sourceLineNo">206</span> }<a name="line.206"></a>
+<span class="sourceLineNo">207</span> group = strategy.group(id, namespace);<a name="line.207"></a>
+<span class="sourceLineNo">208</span> }<a name="line.208"></a>
+<span class="sourceLineNo">209</span> return getWAL(group);<a name="line.209"></a>
+<span class="sourceLineNo">210</span> }<a name="line.210"></a>
+<span class="sourceLineNo">211</span><a name="line.211"></a>
+<span class="sourceLineNo">212</span> @Override<a name="line.212"></a>
+<span class="sourceLineNo">213</span> public void shutdown() throws IOException {<a name="line.213"></a>
+<span class="sourceLineNo">214</span> // save the last exception and rethrow<a name="line.214"></a>
+<span class="sourceLineNo">215</span> IOException failure = null;<a name="line.215"></a>
+<span class="sourceLineNo">216</span> for (WALProvider provider: cached.values()) {<a name="line.216"></a>
+<span class="sourceLineNo">217</span> try {<a name="line.217"></a>
+<span class="sourceLineNo">218</span> provider.shutdown();<a name="line.218"></a>
+<span class="sourceLineNo">219</span> } catch (IOException e) {<a name="line.219"></a>
+<span class="sourceLineNo">220</span> LOG.error("Problem shutting down wal provider '" + provider + "': " + e.getMessage());<a name="line.220"></a>
+<span class="sourceLineNo">221</span> if (LOG.isDebugEnabled()) {<a name="line.221"></a>
+<span class="sourceLineNo">222</span> LOG.debug("Details of problem shutting down wal provider '" + provider + "'", e);<a name="line.222"></a>
+<span class="sourceLineNo">223</span> }<a name="line.223"></a>
+<span class="sourceLineNo">224</span> failure = e;<a name="line.224"></a>
+<span class="sourceLineNo">225</span> }<a name="line.225"></a>
+<span class="sourceLineNo">226</span> }<a name="line.226"></a>
+<span class="sourceLineNo">227</span> if (failure != null) {<a name="line.227"></a>
+<span class="sourceLineNo">228</span> throw failure;<a name="line.228"></a>
<span class="sourceLineNo">229</span> }<a name="line.229"></a>
-<span class="sourceLineNo">230</span> if (failure != null) {<a name="line.230"></a>
-<span class="sourceLineNo">231</span> throw failure;<a name="line.231"></a>
-<span class="sourceLineNo">232</span> }<a name="line.232"></a>
-<span class="sourceLineNo">233</span> }<a name="line.233"></a>
-<span class="sourceLineNo">234</span><a name="line.234"></a>
-<span class="sourceLineNo">235</span> @Override<a name="line.235"></a>
-<span class="sourceLineNo">236</span> public void close() throws IOException {<a name="line.236"></a>
-<span class="sourceLineNo">237</span> // save the last exception and rethrow<a name="line.237"></a>
-<span class="sourceLineNo">238</span> IOException failure = null;<a name="line.238"></a>
-<span class="sourceLineNo">239</span> for (WALProvider provider : cached.values()) {<a name="line.239"></a>
-<span class="sourceLineNo">240</span> try {<a name="line.240"></a>
-<span class="sourceLineNo">241</span> provider.close();<a name="line.241"></a>
-<span class="sourceLineNo">242</span> } catch (IOException e) {<a name="line.242"></a>
-<span class="sourceLineNo">243</span> LOG.error("Problem closing wal provider '" + provider + "': " + e.getMessage());<a name="line.243"></a>
-<span class="sourceLineNo">244</span> if (LOG.isDebugEnabled()) {<a name="line.244"></a>
-<span class="sourceLineNo">245</span> LOG.debug("Details of problem closing wal provider '" + provider + "'", e);<a name="line.245"></a>
-<span class="sourceLineNo">246</span> }<a name="line.246"></a>
-<span class="sourceLineNo">247</span> failure = e;<a name="line.247"></a>
-<span class="sourceLineNo">248</span> }<a name="line.248"></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> @Override<a name="line.232"></a>
+<span class="sourceLineNo">233</span> public void close() throws IOException {<a name="line.233"></a>
+<span class="sourceLineNo">234</span> // save the last exception and rethrow<a name="line.234"></a>
+<span class="sourceLineNo">235</span> IOException failure = null;<a name="line.235"></a>
+<span class="sourceLineNo">236</span> for (WALProvider provider : cached.values()) {<a name="line.236"></a>
+<span class="sourceLineNo">237</span> try {<a name="line.237"></a>
+<span class="sourceLineNo">238</span> provider.close();<a name="line.238"></a>
+<span class="sourceLineNo">239</span> } catch (IOException e) {<a name="line.239"></a>
+<span class="sourceLineNo">240</span> LOG.error("Problem closing wal provider '" + provider + "': " + e.getMessage());<a name="line.240"></a>
+<span class="sourceLineNo">241</span> if (LOG.isDebugEnabled()) {<a name="line.241"></a>
+<span class="sourceLineNo">242</span> LOG.debug("Details of problem closing wal provider '" + provider + "'", e);<a name="line.242"></a>
+<span class="sourceLineNo">243</span> }<a name="line.243"></a>
+<span class="sourceLineNo">244</span> failure = e;<a name="line.244"></a>
+<span class="sourceLineNo">245</span> }<a name="line.245"></a>
+<span class="sourceLineNo">246</span> }<a name="line.246"></a>
+<span class="sourceLineNo">247</span> if (failure != null) {<a name="line.247"></a>
+<span class="sourceLineNo">248</span> throw failure;<a name="line.248"></a>
<span class="sourceLineNo">249</span> }<a name="line.249"></a>
-<span class="sourceLineNo">250</span> if (failure != null) {<a name="line.250"></a>
-<span class="sourceLineNo">251</span> throw failure;<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> static class IdentityGroupingStrategy implements RegionGroupingStrategy {<a name="line.255"></a>
-<span class="sourceLineNo">256</span> @Override<a name="line.256"></a>
-<span class="sourceLineNo">257</span> public void init(Configuration config, String providerId) {}<a name="line.257"></a>
-<span class="sourceLineNo">258</span> @Override<a name="line.258"></a>
-<span class="sourceLineNo">259</span> public String group(final byte[] identifier, final byte[] namespace) {<a name="line.259"></a>
-<span class="sourceLineNo">260</span> return Bytes.toString(identifier);<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><a name="line.263"></a>
-<span class="sourceLineNo">264</span> @Override<a name="line.264"></a>
-<span class="sourceLineNo">265</span> public long getNumLogFiles() {<a name="line.265"></a>
-<span class="sourceLineNo">266</span> long numLogFiles = 0;<a name="line.266"></a>
-<span class="sourceLineNo">267</span> for (WALProvider provider : cached.values()) {<a name="line.267"></a>
-<span class="sourceLineNo">268</span> numLogFiles += provider.getNumLogFiles();<a name="line.268"></a>
-<span class="sourceLineNo">269</span> }<a name="line.269"></a>
-<span class="sourceLineNo">270</span> return numLogFiles;<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> @Override<a name="line.273"></a>
-<span class="sourceLineNo">274</span> public long getLogFileSize() {<a name="line.274"></a>
-<span class="sourceLineNo">275</span> long logFileSize = 0;<a name="line.275"></a>
-<span class="sourceLineNo">276</span> for (WALProvider provider : cached.values()) {<a name="line.276"></a>
-<span class="sourceLineNo">277</span> logFileSize += provider.getLogFileSize();<a name="line.277"></a>
-<span class="sourceLineNo">278</span> }<a name="line.278"></a>
-<span class="sourceLineNo">279</span> return logFileSize;<a name="line.279"></a>
-<span class="sourceLineNo">280</span> }<a name="line.280"></a>
-<span class="sourceLineNo">281</span><a name="line.281"></a>
-<span class="sourceLineNo">282</span> @Override<a name="line.282"></a>
-<span class="sourceLineNo">283</span> public void addWALActionsListener(WALActionsListener listener) {<a name="line.283"></a>
-<span class="sourceLineNo">284</span> // Notice that there is an assumption that this method must be called before the getWAL above,<a name="line.284"></a>
-<span class="sourceLineNo">285</span> // so we can make sure there is no sub WALProvider yet, so we only add the listener to our<a name="line.285"></a>
-<span class="sourceLineNo">286</span> // listeners list without calling addWALActionListener for each WALProvider. Although it is no<a name="line.286"></a>
-<span class="sourceLineNo">287</span> // hurt to execute an extra loop to call addWALActionListener for each WALProvider, but if the<a name="line.287"></a>
-<span class="sourceLineNo">288</span> // extra code actually works, then we will have other big problems. So leave it as is.<a name="line.288"></a>
-<span class="sourceLineNo">289</span> listeners.add(listener);<a name="line.289"></a>
-<span class="sourceLineNo">290</span> }<a name="line.290"></a>
-<span class="sourceLineNo">291</span>}<a name="line.291"></a>
+<span class="sourceLineNo">250</span> }<a name="line.250"></a>
+<span class="sourceLineNo">251</span><a name="line.251"></a>
+<span class="sourceLineNo">252</span> static class IdentityGroupingStrategy implements RegionGroupingStrategy {<a name="line.252"></a>
+<span class="sourceLineNo">253</span> @Override<a name="line.253"></a>
+<span class="sourceLineNo">254</span> public void init(Configuration config, String providerId) {}<a name="line.254"></a>
+<span class="sourceLineNo">255</span> @Override<a name="line.255"></a>
+<span class="sourceLineNo">256</span> public String group(final byte[] identifier, final byte[] namespace) {<a name="line.256"></a>
+<span class="sourceLineNo">257</span> return Bytes.toString(identifier);<a name="line.257"></a>
+<span class="sourceLineNo">258</span> }<a name="line.258"></a>
+<span class="sourceLineNo">259</span> }<a name="line.259"></a>
+<span class="sourceLineNo">260</span><a name="line.260"></a>
+<span class="sourceLineNo">261</span> @Override<a name="line.261"></a>
+<span class="sourceLineNo">262</span> public long getNumLogFiles() {<a name="line.262"></a>
+<span class="sourceLineNo">263</span> long numLogFiles = 0;<a name="line.263"></a>
+<span class="sourceLineNo">264</span> for (WALProvider provider : cached.values()) {<a name="line.264"></a>
+<span class="sourceLineNo">265</span> numLogFiles += provider.getNumLogFiles();<a name="line.265"></a>
+<span class="sourceLineNo">266</span> }<a name="line.266"></a>
+<span class="sourceLineNo">267</span> return numLogFiles;<a name="line.267"></a>
+<span class="sourceLineNo">268</span> }<a name="line.268"></a>
+<span class="sourceLineNo">269</span><a name="line.269"></a>
+<span class="sourceLineNo">270</span> @Override<a name="line.270"></a>
+<span class="sourceLineNo">271</span> public long getLogFileSize() {<a name="line.271"></a>
+<span class="sourceLineNo">272</span> long logFileSize = 0;<a name="line.272"></a>
+<span class="sourceLineNo">273</span> for (WALProvider provider : cached.values()) {<a name="line.273"></a>
+<span class="sourceLineNo">274</span> logFileSize += provider.getLogFileSize();<a name="line.274"></a>
+<span class="sourceLineNo">275</span> }<a name="line.275"></a>
+<span class="sourceLineNo">276</span> return logFileSize;<a name="line.276"></a>
+<span class="sourceLineNo">277</span> }<a name="line.277"></a>
+<span class="sourceLineNo">278</span><a name="line.278"></a>
+<span class="sourceLineNo">279</span> @Override<a name="line.279"></a>
+<span class="sourceLineNo">280</span> public void addWALActionsListener(WALActionsListener listener) {<a name="line.280"></a>
+<span class="sourceLineNo">281</span> // Notice that there is an assumption that this method must be called before the getWAL above,<a name="line.281"></a>
+<span class="sourceLineNo">282</span> // so we can make sure there is no sub WALProvider yet, so we only add the listener to our<a name="line.282"></a>
+<span class="sourceLineNo">283</span> // listeners list without calling addWALActionListener for each WALProvider. Although it is no<a name="line.283"></a>
+<span class="sourceLineNo">284</span> // hurt to execute an extra loop to call addWALActionListener for each WALProvider, but if the<a name="line.284"></a>
+<span class="sourceLineNo">285</span> // extra code actually works, then we will have other big problems. So leave it as is.<a name="line.285"></a>
+<span class="sourceLineNo">286</span> listeners.add(listener);<a name="line.286"></a>
+<span class="sourceLineNo">287</span> }<a name="line.287"></a>
+<span class="sourceLineNo">288</span>}<a name="line.288"></a>