http://git-wip-us.apache.org/repos/asf/hbase-site/blob/48bd3915/devapidocs/src-html/org/apache/hadoop/hbase/zookeeper/MetaTableLocator.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/zookeeper/MetaTableLocator.html b/devapidocs/src-html/org/apache/hadoop/hbase/zookeeper/MetaTableLocator.html index a3bc449..a0dbad7 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/zookeeper/MetaTableLocator.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/zookeeper/MetaTableLocator.html @@ -107,535 +107,551 @@ <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> /**<a name="line.101"></a> -<span class="sourceLineNo">102</span> *<a name="line.102"></a> -<span class="sourceLineNo">103</span> * @param zkw<a name="line.103"></a> -<span class="sourceLineNo">104</span> * @param replicaId<a name="line.104"></a> -<span class="sourceLineNo">105</span> * @return meta table regions and their locations.<a name="line.105"></a> -<span class="sourceLineNo">106</span> */<a name="line.106"></a> -<span class="sourceLineNo">107</span> public List<Pair<RegionInfo, ServerName>> getMetaRegionsAndLocations(ZKWatcher zkw,<a name="line.107"></a> -<span class="sourceLineNo">108</span> int replicaId) {<a name="line.108"></a> -<span class="sourceLineNo">109</span> ServerName serverName = getMetaRegionLocation(zkw, replicaId);<a name="line.109"></a> -<span class="sourceLineNo">110</span> List<Pair<RegionInfo, ServerName>> list = new ArrayList<>(1);<a name="line.110"></a> -<span class="sourceLineNo">111</span> list.add(new Pair<>(RegionReplicaUtil.getRegionInfoForReplica(<a name="line.111"></a> -<span class="sourceLineNo">112</span> RegionInfoBuilder.FIRST_META_REGIONINFO, replicaId), serverName));<a name="line.112"></a> -<span class="sourceLineNo">113</span> return list;<a name="line.113"></a> -<span class="sourceLineNo">114</span> }<a name="line.114"></a> -<span class="sourceLineNo">115</span><a name="line.115"></a> -<span class="sourceLineNo">116</span> /**<a name="line.116"></a> -<span class="sourceLineNo">117</span> * @param zkw ZooKeeper watcher to be used<a name="line.117"></a> -<span class="sourceLineNo">118</span> * @return List of meta regions<a name="line.118"></a> -<span class="sourceLineNo">119</span> */<a name="line.119"></a> -<span class="sourceLineNo">120</span> public List<RegionInfo> getMetaRegions(ZKWatcher zkw) {<a name="line.120"></a> -<span class="sourceLineNo">121</span> return getMetaRegions(zkw, RegionInfo.DEFAULT_REPLICA_ID);<a name="line.121"></a> -<span class="sourceLineNo">122</span> }<a name="line.122"></a> -<span class="sourceLineNo">123</span><a name="line.123"></a> -<span class="sourceLineNo">124</span> /**<a name="line.124"></a> -<span class="sourceLineNo">125</span> *<a name="line.125"></a> -<span class="sourceLineNo">126</span> * @param zkw<a name="line.126"></a> -<span class="sourceLineNo">127</span> * @param replicaId<a name="line.127"></a> -<span class="sourceLineNo">128</span> * @return List of meta regions<a name="line.128"></a> -<span class="sourceLineNo">129</span> */<a name="line.129"></a> -<span class="sourceLineNo">130</span> public List<RegionInfo> getMetaRegions(ZKWatcher zkw, int replicaId) {<a name="line.130"></a> -<span class="sourceLineNo">131</span> List<Pair<RegionInfo, ServerName>> result;<a name="line.131"></a> -<span class="sourceLineNo">132</span> result = getMetaRegionsAndLocations(zkw, replicaId);<a name="line.132"></a> -<span class="sourceLineNo">133</span> return getListOfRegionInfos(result);<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 List<RegionInfo> getListOfRegionInfos(<a name="line.136"></a> -<span class="sourceLineNo">137</span> final List<Pair<RegionInfo, ServerName>> pairs) {<a name="line.137"></a> -<span class="sourceLineNo">138</span> if (pairs == null || pairs.isEmpty()) return Collections.EMPTY_LIST;<a name="line.138"></a> -<span class="sourceLineNo">139</span> List<RegionInfo> result = new ArrayList<>(pairs.size());<a name="line.139"></a> -<span class="sourceLineNo">140</span> for (Pair<RegionInfo, ServerName> pair: pairs) {<a name="line.140"></a> -<span class="sourceLineNo">141</span> result.add(pair.getFirst());<a name="line.141"></a> -<span class="sourceLineNo">142</span> }<a name="line.142"></a> -<span class="sourceLineNo">143</span> return result;<a name="line.143"></a> -<span class="sourceLineNo">144</span> }<a name="line.144"></a> -<span class="sourceLineNo">145</span><a name="line.145"></a> -<span class="sourceLineNo">146</span> /**<a name="line.146"></a> -<span class="sourceLineNo">147</span> * Gets the meta region location, if available. Does not block.<a name="line.147"></a> -<span class="sourceLineNo">148</span> * @param zkw zookeeper connection to use<a name="line.148"></a> -<span class="sourceLineNo">149</span> * @return server name or null if we failed to get the data.<a name="line.149"></a> -<span class="sourceLineNo">150</span> */<a name="line.150"></a> -<span class="sourceLineNo">151</span> public ServerName getMetaRegionLocation(final ZKWatcher zkw) {<a name="line.151"></a> -<span class="sourceLineNo">152</span> try {<a name="line.152"></a> -<span class="sourceLineNo">153</span> RegionState state = getMetaRegionState(zkw);<a name="line.153"></a> -<span class="sourceLineNo">154</span> return state.isOpened() ? state.getServerName() : null;<a name="line.154"></a> -<span class="sourceLineNo">155</span> } catch (KeeperException ke) {<a name="line.155"></a> -<span class="sourceLineNo">156</span> return null;<a name="line.156"></a> -<span class="sourceLineNo">157</span> }<a name="line.157"></a> -<span class="sourceLineNo">158</span> }<a name="line.158"></a> -<span class="sourceLineNo">159</span><a name="line.159"></a> -<span class="sourceLineNo">160</span> /**<a name="line.160"></a> -<span class="sourceLineNo">161</span> * Gets the meta region location, if available. Does not block.<a name="line.161"></a> -<span class="sourceLineNo">162</span> * @param zkw<a name="line.162"></a> -<span class="sourceLineNo">163</span> * @param replicaId<a name="line.163"></a> -<span class="sourceLineNo">164</span> * @return server name<a name="line.164"></a> -<span class="sourceLineNo">165</span> */<a name="line.165"></a> -<span class="sourceLineNo">166</span> public ServerName getMetaRegionLocation(final ZKWatcher zkw, int replicaId) {<a name="line.166"></a> -<span class="sourceLineNo">167</span> try {<a name="line.167"></a> -<span class="sourceLineNo">168</span> RegionState state = getMetaRegionState(zkw, replicaId);<a name="line.168"></a> -<span class="sourceLineNo">169</span> return state.isOpened() ? state.getServerName() : null;<a name="line.169"></a> -<span class="sourceLineNo">170</span> } catch (KeeperException ke) {<a name="line.170"></a> -<span class="sourceLineNo">171</span> return null;<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><a name="line.174"></a> -<span class="sourceLineNo">175</span> /**<a name="line.175"></a> -<span class="sourceLineNo">176</span> * Gets the meta region location, if available, and waits for up to the<a name="line.176"></a> -<span class="sourceLineNo">177</span> * specified timeout if not immediately available.<a name="line.177"></a> -<span class="sourceLineNo">178</span> * Given the zookeeper notification could be delayed, we will try to<a name="line.178"></a> -<span class="sourceLineNo">179</span> * get the latest data.<a name="line.179"></a> -<span class="sourceLineNo">180</span> * @param zkw<a name="line.180"></a> -<span class="sourceLineNo">181</span> * @param timeout maximum time to wait, in millis<a name="line.181"></a> -<span class="sourceLineNo">182</span> * @return server name for server hosting meta region formatted as per<a name="line.182"></a> -<span class="sourceLineNo">183</span> * {@link ServerName}, or null if none available<a name="line.183"></a> -<span class="sourceLineNo">184</span> * @throws InterruptedException if interrupted while waiting<a name="line.184"></a> -<span class="sourceLineNo">185</span> * @throws NotAllMetaRegionsOnlineException<a name="line.185"></a> -<span class="sourceLineNo">186</span> */<a name="line.186"></a> -<span class="sourceLineNo">187</span> public ServerName waitMetaRegionLocation(ZKWatcher zkw, long timeout)<a name="line.187"></a> -<span class="sourceLineNo">188</span> throws InterruptedException, NotAllMetaRegionsOnlineException {<a name="line.188"></a> -<span class="sourceLineNo">189</span> return waitMetaRegionLocation(zkw, RegionInfo.DEFAULT_REPLICA_ID, timeout);<a name="line.189"></a> -<span class="sourceLineNo">190</span> }<a name="line.190"></a> -<span class="sourceLineNo">191</span><a name="line.191"></a> -<span class="sourceLineNo">192</span> /**<a name="line.192"></a> -<span class="sourceLineNo">193</span> * Gets the meta region location, if available, and waits for up to the<a name="line.193"></a> -<span class="sourceLineNo">194</span> * specified timeout if not immediately available.<a name="line.194"></a> -<span class="sourceLineNo">195</span> * Given the zookeeper notification could be delayed, we will try to<a name="line.195"></a> -<span class="sourceLineNo">196</span> * get the latest data.<a name="line.196"></a> -<span class="sourceLineNo">197</span> * @param zkw<a name="line.197"></a> -<span class="sourceLineNo">198</span> * @param replicaId<a name="line.198"></a> -<span class="sourceLineNo">199</span> * @param timeout maximum time to wait, in millis<a name="line.199"></a> -<span class="sourceLineNo">200</span> * @return server name for server hosting meta region formatted as per<a name="line.200"></a> -<span class="sourceLineNo">201</span> * {@link ServerName}, or null if none available<a name="line.201"></a> -<span class="sourceLineNo">202</span> * @throws InterruptedException<a name="line.202"></a> -<span class="sourceLineNo">203</span> * @throws NotAllMetaRegionsOnlineException<a name="line.203"></a> -<span class="sourceLineNo">204</span> */<a name="line.204"></a> -<span class="sourceLineNo">205</span> public ServerName waitMetaRegionLocation(ZKWatcher zkw, int replicaId, long timeout)<a name="line.205"></a> -<span class="sourceLineNo">206</span> throws InterruptedException, NotAllMetaRegionsOnlineException {<a name="line.206"></a> -<span class="sourceLineNo">207</span> try {<a name="line.207"></a> -<span class="sourceLineNo">208</span> if (ZKUtil.checkExists(zkw, zkw.znodePaths.baseZNode) == -1) {<a name="line.208"></a> -<span class="sourceLineNo">209</span> String errorMsg = "Check the value configured in 'zookeeper.znode.parent'. "<a name="line.209"></a> -<span class="sourceLineNo">210</span> + "There could be a mismatch with the one configured in the master.";<a name="line.210"></a> -<span class="sourceLineNo">211</span> LOG.error(errorMsg);<a name="line.211"></a> -<span class="sourceLineNo">212</span> throw new IllegalArgumentException(errorMsg);<a name="line.212"></a> -<span class="sourceLineNo">213</span> }<a name="line.213"></a> -<span class="sourceLineNo">214</span> } catch (KeeperException e) {<a name="line.214"></a> -<span class="sourceLineNo">215</span> throw new IllegalStateException("KeeperException while trying to check baseZNode:", e);<a name="line.215"></a> -<span class="sourceLineNo">216</span> }<a name="line.216"></a> -<span class="sourceLineNo">217</span> ServerName sn = blockUntilAvailable(zkw, replicaId, timeout);<a name="line.217"></a> -<span class="sourceLineNo">218</span><a name="line.218"></a> -<span class="sourceLineNo">219</span> if (sn == null) {<a name="line.219"></a> -<span class="sourceLineNo">220</span> throw new NotAllMetaRegionsOnlineException("Timed out; " + timeout + "ms");<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> return sn;<a name="line.223"></a> -<span class="sourceLineNo">224</span> }<a name="line.224"></a> +<span class="sourceLineNo">102</span> * Gets the meta regions and their locations for the given path and replica ID.<a name="line.102"></a> +<span class="sourceLineNo">103</span> *<a name="line.103"></a> +<span class="sourceLineNo">104</span> * @param zkw reference to the {@link ZKWatcher} which also contains configuration and operation<a name="line.104"></a> +<span class="sourceLineNo">105</span> * @param replicaId the ID of the replica<a name="line.105"></a> +<span class="sourceLineNo">106</span> * @return meta table regions and their locations.<a name="line.106"></a> +<span class="sourceLineNo">107</span> */<a name="line.107"></a> +<span class="sourceLineNo">108</span> public List<Pair<RegionInfo, ServerName>> getMetaRegionsAndLocations(ZKWatcher zkw,<a name="line.108"></a> +<span class="sourceLineNo">109</span> int replicaId) {<a name="line.109"></a> +<span class="sourceLineNo">110</span> ServerName serverName = getMetaRegionLocation(zkw, replicaId);<a name="line.110"></a> +<span class="sourceLineNo">111</span> List<Pair<RegionInfo, ServerName>> list = new ArrayList<>(1);<a name="line.111"></a> +<span class="sourceLineNo">112</span> list.add(new Pair<>(RegionReplicaUtil.getRegionInfoForReplica(<a name="line.112"></a> +<span class="sourceLineNo">113</span> RegionInfoBuilder.FIRST_META_REGIONINFO, replicaId), serverName));<a name="line.113"></a> +<span class="sourceLineNo">114</span> return list;<a name="line.114"></a> +<span class="sourceLineNo">115</span> }<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> * Gets the meta regions for the given path with the default replica ID.<a name="line.118"></a> +<span class="sourceLineNo">119</span> *<a name="line.119"></a> +<span class="sourceLineNo">120</span> * @param zkw ZooKeeper watcher to be used<a name="line.120"></a> +<span class="sourceLineNo">121</span> * @return List of meta regions<a name="line.121"></a> +<span class="sourceLineNo">122</span> */<a name="line.122"></a> +<span class="sourceLineNo">123</span> public List<RegionInfo> getMetaRegions(ZKWatcher zkw) {<a name="line.123"></a> +<span class="sourceLineNo">124</span> return getMetaRegions(zkw, RegionInfo.DEFAULT_REPLICA_ID);<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> /**<a name="line.127"></a> +<span class="sourceLineNo">128</span> * Gets the meta regions for the given path and replica ID.<a name="line.128"></a> +<span class="sourceLineNo">129</span> *<a name="line.129"></a> +<span class="sourceLineNo">130</span> * @param zkw reference to the {@link ZKWatcher} which also contains configuration and operation<a name="line.130"></a> +<span class="sourceLineNo">131</span> * @param replicaId the ID of the replica<a name="line.131"></a> +<span class="sourceLineNo">132</span> * @return List of meta regions<a name="line.132"></a> +<span class="sourceLineNo">133</span> */<a name="line.133"></a> +<span class="sourceLineNo">134</span> public List<RegionInfo> getMetaRegions(ZKWatcher zkw, int replicaId) {<a name="line.134"></a> +<span class="sourceLineNo">135</span> List<Pair<RegionInfo, ServerName>> result;<a name="line.135"></a> +<span class="sourceLineNo">136</span> result = getMetaRegionsAndLocations(zkw, replicaId);<a name="line.136"></a> +<span class="sourceLineNo">137</span> return getListOfRegionInfos(result);<a name="line.137"></a> +<span class="sourceLineNo">138</span> }<a name="line.138"></a> +<span class="sourceLineNo">139</span><a name="line.139"></a> +<span class="sourceLineNo">140</span> private List<RegionInfo> getListOfRegionInfos(final List<Pair<RegionInfo, ServerName>> pairs) {<a name="line.140"></a> +<span class="sourceLineNo">141</span> if (pairs == null || pairs.isEmpty()) {<a name="line.141"></a> +<span class="sourceLineNo">142</span> return Collections.EMPTY_LIST;<a name="line.142"></a> +<span class="sourceLineNo">143</span> }<a name="line.143"></a> +<span class="sourceLineNo">144</span><a name="line.144"></a> +<span class="sourceLineNo">145</span> List<RegionInfo> result = new ArrayList<>(pairs.size());<a name="line.145"></a> +<span class="sourceLineNo">146</span> for (Pair<RegionInfo, ServerName> pair: pairs) {<a name="line.146"></a> +<span class="sourceLineNo">147</span> result.add(pair.getFirst());<a name="line.147"></a> +<span class="sourceLineNo">148</span> }<a name="line.148"></a> +<span class="sourceLineNo">149</span> return result;<a name="line.149"></a> +<span class="sourceLineNo">150</span> }<a name="line.150"></a> +<span class="sourceLineNo">151</span><a name="line.151"></a> +<span class="sourceLineNo">152</span> /**<a name="line.152"></a> +<span class="sourceLineNo">153</span> * Gets the meta region location, if available. Does not block.<a name="line.153"></a> +<span class="sourceLineNo">154</span> * @param zkw zookeeper connection to use<a name="line.154"></a> +<span class="sourceLineNo">155</span> * @return server name or null if we failed to get the data.<a name="line.155"></a> +<span class="sourceLineNo">156</span> */<a name="line.156"></a> +<span class="sourceLineNo">157</span> public ServerName getMetaRegionLocation(final ZKWatcher zkw) {<a name="line.157"></a> +<span class="sourceLineNo">158</span> try {<a name="line.158"></a> +<span class="sourceLineNo">159</span> RegionState state = getMetaRegionState(zkw);<a name="line.159"></a> +<span class="sourceLineNo">160</span> return state.isOpened() ? state.getServerName() : null;<a name="line.160"></a> +<span class="sourceLineNo">161</span> } catch (KeeperException ke) {<a name="line.161"></a> +<span class="sourceLineNo">162</span> return null;<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> * Gets the meta region location, if available. 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Given the zookeeper notification could be delayed, we will try to<a name="line.201"></a> +<span class="sourceLineNo">202</span> * get the latest data.<a name="line.202"></a> +<span class="sourceLineNo">203</span> *<a name="line.203"></a> +<span class="sourceLineNo">204</span> * @param zkw reference to the {@link ZKWatcher} which also contains configuration and operation<a name="line.204"></a> +<span class="sourceLineNo">205</span> * @param replicaId the ID of the replica<a name="line.205"></a> +<span class="sourceLineNo">206</span> * @param timeout maximum time to wait, in millis<a name="line.206"></a> +<span class="sourceLineNo">207</span> * @return server name for server hosting meta region formatted as per<a name="line.207"></a> +<span class="sourceLineNo">208</span> * {@link ServerName}, or null if none available<a name="line.208"></a> +<span class="sourceLineNo">209</span> * @throws InterruptedException if waiting for the socket operation fails<a name="line.209"></a> +<span class="sourceLineNo">210</span> * @throws NotAllMetaRegionsOnlineException if a meta or root region is not online<a name="line.210"></a> +<span class="sourceLineNo">211</span> */<a name="line.211"></a> +<span class="sourceLineNo">212</span> public ServerName waitMetaRegionLocation(ZKWatcher zkw, int replicaId, long timeout)<a name="line.212"></a> +<span class="sourceLineNo">213</span> throws InterruptedException, NotAllMetaRegionsOnlineException {<a name="line.213"></a> +<span class="sourceLineNo">214</span> try {<a name="line.214"></a> +<span class="sourceLineNo">215</span> if (ZKUtil.checkExists(zkw, zkw.znodePaths.baseZNode) == -1) {<a name="line.215"></a> +<span class="sourceLineNo">216</span> String errorMsg = "Check the value configured in 'zookeeper.znode.parent'. "<a name="line.216"></a> +<span class="sourceLineNo">217</span> + "There could be a mismatch with the one configured in the master.";<a name="line.217"></a> +<span class="sourceLineNo">218</span> LOG.error(errorMsg);<a name="line.218"></a> +<span class="sourceLineNo">219</span> throw new IllegalArgumentException(errorMsg);<a name="line.219"></a> +<span class="sourceLineNo">220</span> }<a name="line.220"></a> +<span class="sourceLineNo">221</span> } catch (KeeperException e) {<a name="line.221"></a> +<span class="sourceLineNo">222</span> throw new IllegalStateException("KeeperException while trying to check baseZNode:", e);<a name="line.222"></a> +<span class="sourceLineNo">223</span> }<a name="line.223"></a> +<span class="sourceLineNo">224</span> ServerName sn = blockUntilAvailable(zkw, replicaId, timeout);<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> * Waits indefinitely for availability of <code>hbase:meta</code>. Used during<a name="line.227"></a> -<span class="sourceLineNo">228</span> * cluster startup. Does not verify meta, just that something has been<a name="line.228"></a> -<span class="sourceLineNo">229</span> * set up in zk.<a name="line.229"></a> -<span class="sourceLineNo">230</span> * @see #waitMetaRegionLocation(ZKWatcher, long)<a name="line.230"></a> -<span class="sourceLineNo">231</span> * @throws InterruptedException if interrupted while waiting<a name="line.231"></a> -<span class="sourceLineNo">232</span> */<a name="line.232"></a> -<span class="sourceLineNo">233</span> public void waitMetaRegionLocation(ZKWatcher zkw) throws InterruptedException {<a name="line.233"></a> -<span class="sourceLineNo">234</span> long startTime = System.currentTimeMillis();<a name="line.234"></a> -<span class="sourceLineNo">235</span> while (!stopped) {<a name="line.235"></a> -<span class="sourceLineNo">236</span> try {<a name="line.236"></a> -<span class="sourceLineNo">237</span> if (waitMetaRegionLocation(zkw, 100) != null) break;<a name="line.237"></a> -<span class="sourceLineNo">238</span> long sleepTime = System.currentTimeMillis() - startTime;<a name="line.238"></a> -<span class="sourceLineNo">239</span> // +1 in case sleepTime=0<a name="line.239"></a> -<span class="sourceLineNo">240</span> if ((sleepTime + 1) % 10000 == 0) {<a name="line.240"></a> -<span class="sourceLineNo">241</span> LOG.warn("Have been waiting for meta to be assigned for " + sleepTime + "ms");<a name="line.241"></a> -<span class="sourceLineNo">242</span> }<a name="line.242"></a> -<span class="sourceLineNo">243</span> } catch (NotAllMetaRegionsOnlineException e) {<a name="line.243"></a> -<span class="sourceLineNo">244</span> if (LOG.isTraceEnabled()) {<a name="line.244"></a> -<span class="sourceLineNo">245</span> LOG.trace("hbase:meta still not available, sleeping and retrying." +<a name="line.245"></a> -<span class="sourceLineNo">246</span> " Reason: " + e.getMessage());<a name="line.246"></a> -<span class="sourceLineNo">247</span> }<a name="line.247"></a> -<span class="sourceLineNo">248</span> }<a name="line.248"></a> -<span class="sourceLineNo">249</span> }<a name="line.249"></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> /**<a name="line.252"></a> -<span class="sourceLineNo">253</span> * Verify <code>hbase:meta</code> is deployed and accessible.<a name="line.253"></a> -<span class="sourceLineNo">254</span> * @param hConnection<a name="line.254"></a> -<span class="sourceLineNo">255</span> * @param zkw<a name="line.255"></a> -<span class="sourceLineNo">256</span> * @param timeout How long to wait on zk for meta address (passed through to<a name="line.256"></a> -<span class="sourceLineNo">257</span> * the internal call to {@link #getMetaServerConnection}.<a name="line.257"></a> -<span class="sourceLineNo">258</span> * @return True if the <code>hbase:meta</code> location is healthy.<a name="line.258"></a> -<span class="sourceLineNo">259</span> * @throws java.io.IOException<a name="line.259"></a> -<span class="sourceLineNo">260</span> * @throws InterruptedException<a name="line.260"></a> -<span class="sourceLineNo">261</span> */<a name="line.261"></a> -<span class="sourceLineNo">262</span> public boolean verifyMetaRegionLocation(ClusterConnection hConnection,<a name="line.262"></a> -<span class="sourceLineNo">263</span> ZKWatcher zkw, final long timeout)<a name="line.263"></a> -<span class="sourceLineNo">264</span> throws InterruptedException, IOException {<a name="line.264"></a> -<span class="sourceLineNo">265</span> return verifyMetaRegionLocation(hConnection, zkw, timeout, RegionInfo.DEFAULT_REPLICA_ID);<a name="line.265"></a> -<span class="sourceLineNo">266</span> }<a name="line.266"></a> -<span class="sourceLineNo">267</span><a name="line.267"></a> -<span class="sourceLineNo">268</span> /**<a name="line.268"></a> -<span class="sourceLineNo">269</span> * Verify <code>hbase:meta</code> is deployed and accessible.<a 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name="line.279"></a> -<span class="sourceLineNo">280</span> throws InterruptedException, IOException {<a name="line.280"></a> -<span class="sourceLineNo">281</span> AdminProtos.AdminService.BlockingInterface service = null;<a name="line.281"></a> -<span class="sourceLineNo">282</span> try {<a name="line.282"></a> -<span class="sourceLineNo">283</span> service = getMetaServerConnection(connection, zkw, timeout, replicaId);<a name="line.283"></a> -<span class="sourceLineNo">284</span> } catch (NotAllMetaRegionsOnlineException e) {<a name="line.284"></a> -<span class="sourceLineNo">285</span> // Pass<a name="line.285"></a> -<span class="sourceLineNo">286</span> } catch (ServerNotRunningYetException e) {<a name="line.286"></a> -<span class="sourceLineNo">287</span> // Pass -- remote server is not up so can't be carrying root<a name="line.287"></a> -<span class="sourceLineNo">288</span> } catch (UnknownHostException e) {<a name="line.288"></a> -<span class="sourceLineNo">289</span> // Pass -- server name doesn't resolve so it can't be assigned anything.<a name="line.289"></a> -<span class="sourceLineNo">290</span> } catch (RegionServerStoppedException e) {<a name="line.290"></a> -<span class="sourceLineNo">291</span> // Pass -- server name sends us to a server that is dying or already dead.<a name="line.291"></a> -<span class="sourceLineNo">292</span> }<a name="line.292"></a> -<span class="sourceLineNo">293</span> return (service != null) && verifyRegionLocation(connection, service,<a name="line.293"></a> -<span class="sourceLineNo">294</span> getMetaRegionLocation(zkw, replicaId), RegionReplicaUtil.getRegionInfoForReplica(<a name="line.294"></a> -<span class="sourceLineNo">295</span> RegionInfoBuilder.FIRST_META_REGIONINFO, replicaId).getRegionName());<a name="line.295"></a> -<span class="sourceLineNo">296</span> }<a name="line.296"></a> -<span class="sourceLineNo">297</span><a name="line.297"></a> -<span class="sourceLineNo">298</span> /**<a name="line.298"></a> -<span class="sourceLineNo">299</span> * Verify we can connect to <code>hostingServer</code> and that its carrying<a name="line.299"></a> -<span class="sourceLineNo">300</span> * <code>regionName</code>.<a name="line.300"></a> -<span class="sourceLineNo">301</span> * @param hostingServer Interface to the server hosting <code>regionName</code><a name="line.301"></a> -<span class="sourceLineNo">302</span> * @param address The servername that goes with the <code>metaServer</code><a name="line.302"></a> -<span class="sourceLineNo">303</span> * Interface. Used logging.<a name="line.303"></a> -<span class="sourceLineNo">304</span> * @param regionName The regionname we are interested in.<a name="line.304"></a> -<span class="sourceLineNo">305</span> * @return True if we were able to verify the region located at other side of<a name="line.305"></a> -<span class="sourceLineNo">306</span> * the Interface.<a name="line.306"></a> -<span class="sourceLineNo">307</span> * @throws IOException<a name="line.307"></a> -<span class="sourceLineNo">308</span> */<a name="line.308"></a> -<span class="sourceLineNo">309</span> // TODO: We should be able to get the ServerName from the AdminProtocol<a name="line.309"></a> -<span class="sourceLineNo">310</span> // rather than have to pass it in. 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Use an {@link org.apache.hadoop.hbase.client.HTable} instead.<a name="line.352"></a> -<span class="sourceLineNo">353</span> * @param connection<a name="line.353"></a> -<span class="sourceLineNo">354</span> * @param zkw<a name="line.354"></a> -<span class="sourceLineNo">355</span> * @param timeout How long to wait on meta location<a name="line.355"></a> -<span class="sourceLineNo">356</span> * @param replicaId<a name="line.356"></a> -<span class="sourceLineNo">357</span> * @return connection to server hosting meta<a name="line.357"></a> -<span class="sourceLineNo">358</span> * @throws InterruptedException<a name="line.358"></a> -<span class="sourceLineNo">359</span> * @throws NotAllMetaRegionsOnlineException if timed out waiting<a name="line.359"></a> -<span class="sourceLineNo">360</span> * @throws IOException<a name="line.360"></a> -<span class="sourceLineNo">361</span> */<a name="line.361"></a> -<span class="sourceLineNo">362</span> private AdminService.BlockingInterface getMetaServerConnection(ClusterConnection connection,<a name="line.362"></a> -<span class="sourceLineNo">363</span> ZKWatcher zkw, long timeout, int replicaId)<a name="line.363"></a> -<span class="sourceLineNo">364</span> throws InterruptedException, NotAllMetaRegionsOnlineException, IOException {<a name="line.364"></a> -<span class="sourceLineNo">365</span> return getCachedConnection(connection, waitMetaRegionLocation(zkw, replicaId, timeout));<a name="line.365"></a> -<span class="sourceLineNo">366</span> }<a name="line.366"></a> -<span class="sourceLineNo">367</span><a name="line.367"></a> -<span class="sourceLineNo">368</span> /**<a name="line.368"></a> -<span class="sourceLineNo">369</span> * @param sn ServerName to get a connection against.<a name="line.369"></a> -<span class="sourceLineNo">370</span> * @return The AdminProtocol we got when we connected to <code>sn</code><a name="line.370"></a> -<span class="sourceLineNo">371</span> * May have come from cache, may not be good, may have been setup by this<a name="line.371"></a> -<span class="sourceLineNo">372</span> * invocation, or may be null.<a name="line.372"></a> -<span class="sourceLineNo">373</span> * @throws IOException<a name="line.373"></a> -<span class="sourceLineNo">374</span> */<a name="line.374"></a> -<span class="sourceLineNo">375</span> private static AdminService.BlockingInterface getCachedConnection(ClusterConnection connection,<a name="line.375"></a> -<span class="sourceLineNo">376</span> ServerName sn)<a name="line.376"></a> -<span class="sourceLineNo">377</span> throws IOException {<a name="line.377"></a> -<span class="sourceLineNo">378</span> if (sn == null) {<a name="line.378"></a> -<span class="sourceLineNo">379</span> return null;<a name="line.379"></a> -<span class="sourceLineNo">380</span> }<a name="line.380"></a> -<span class="sourceLineNo">381</span> AdminService.BlockingInterface service = null;<a name="line.381"></a> -<span class="sourceLineNo">382</span> try {<a name="line.382"></a> -<span class="sourceLineNo">383</span> service = connection.getAdmin(sn);<a name="line.383"></a> -<span class="sourceLineNo">384</span> } catch (RetriesExhaustedException e) {<a name="line.384"></a> -<span class="sourceLineNo">385</span> if (e.getCause() != null && e.getCause() instanceof ConnectException) {<a name="line.385"></a> -<span class="sourceLineNo">386</span> // Catch this; 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Connect refused.<a name="line.405"></a> -<span class="sourceLineNo">406</span> } else if (cause != null && cause instanceof EOFException) {<a name="line.406"></a> -<span class="sourceLineNo">407</span> // Catch. Other end disconnected us.<a name="line.407"></a> -<span class="sourceLineNo">408</span> } else if (cause != null && cause.getMessage() != null &&<a name="line.408"></a> -<span class="sourceLineNo">409</span> cause.getMessage().toLowerCase(Locale.ROOT).contains("connection reset")) {<a name="line.409"></a> -<span class="sourceLineNo">410</span> // Catch. Connection reset.<a name="line.410"></a> -<span class="sourceLineNo">411</span> } else {<a name="line.411"></a> -<span class="sourceLineNo">412</span> throw ioe;<a name="line.412"></a> -<span class="sourceLineNo">413</span> }<a name="line.413"></a> -<span class="sourceLineNo">414</span><a name="line.414"></a> -<span class="sourceLineNo">415</span> }<a name="line.415"></a> -<span class="sourceLineNo">416</span> return service;<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> /**<a name="line.419"></a> -<span class="sourceLineNo">420</span> * Sets the location of <code>hbase:meta</code> in ZooKeeper to the<a name="line.420"></a> -<span class="sourceLineNo">421</span> * specified server address.<a name="line.421"></a> -<span class="sourceLineNo">422</span> * @param zookeeper zookeeper reference<a name="line.422"></a> -<span 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class="sourceLineNo">433</span> * Sets the location of <code>hbase:meta</code> in ZooKeeper to the<a name="line.433"></a> -<span class="sourceLineNo">434</span> * specified server address.<a name="line.434"></a> -<span class="sourceLineNo">435</span> * @param zookeeper<a name="line.435"></a> -<span class="sourceLineNo">436</span> * @param serverName<a name="line.436"></a> -<span class="sourceLineNo">437</span> * @param replicaId<a name="line.437"></a> -<span class="sourceLineNo">438</span> * @param state<a name="line.438"></a> -<span class="sourceLineNo">439</span> * @throws KeeperException<a name="line.439"></a> -<span class="sourceLineNo">440</span> */<a name="line.440"></a> -<span class="sourceLineNo">441</span> public static void setMetaLocation(ZKWatcher zookeeper,<a name="line.441"></a> -<span class="sourceLineNo">442</span> ServerName serverName, int replicaId, RegionState.State state) throws KeeperException {<a name="line.442"></a> -<span class="sourceLineNo">443</span> if (serverName == null) {<a name="line.443"></a> -<span class="sourceLineNo">444</span> LOG.warn("Tried to set null ServerName in hbase:meta; skipping -- ServerName required");<a name="line.444"></a> -<span class="sourceLineNo">445</span> return;<a name="line.445"></a> -<span class="sourceLineNo">446</span> }<a name="line.446"></a> -<span class="sourceLineNo">447</span> LOG.info("Setting hbase:meta (replicaId=" + replicaId + ") location in ZooKeeper as " +<a name="line.447"></a> -<span class="sourceLineNo">448</span> serverName);<a name="line.448"></a> -<span class="sourceLineNo">449</span> // Make the MetaRegionServer pb and then get its bytes and save this as<a name="line.449"></a> -<span class="sourceLineNo">450</span> // the znode content.<a name="line.450"></a> -<span class="sourceLineNo">451</span> MetaRegionServer pbrsr = MetaRegionServer.newBuilder()<a name="line.451"></a> -<span class="sourceLineNo">452</span> .setServer(ProtobufUtil.toServerName(serverName))<a name="line.452"></a> -<span class="sourceLineNo">453</span> .setRpcVersion(HConstants.RPC_CURRENT_VERSION)<a name="line.453"></a> -<span class="sourceLineNo">454</span> .setState(state.convert()).build();<a name="line.454"></a> -<span class="sourceLineNo">455</span> byte[] data = ProtobufUtil.prependPBMagic(pbrsr.toByteArray());<a name="line.455"></a> -<span class="sourceLineNo">456</span> try {<a name="line.456"></a> -<span class="sourceLineNo">457</span> ZKUtil.setData(zookeeper,<a name="line.457"></a> -<span class="sourceLineNo">458</span> zookeeper.znodePaths.getZNodeForReplica(replicaId), data);<a name="line.458"></a> -<span class="sourceLineNo">459</span> } catch(KeeperException.NoNodeException nne) {<a name="line.459"></a> -<span class="sourceLineNo">460</span> if (replicaId == RegionInfo.DEFAULT_REPLICA_ID) {<a name="line.460"></a> -<span class="sourceLineNo">461</span> LOG.debug("META region location doesn't exist, create it");<a name="line.461"></a> -<span class="sourceLineNo">462</span> } else {<a name="line.462"></a> -<span class="sourceLineNo">463</span> LOG.debug("META region location doesn't exist for replicaId=" + replicaId +<a name="line.463"></a> -<span class="sourceLineNo">464</span> ", create it");<a name="line.464"></a> -<span class="sourceLineNo">465</span> }<a name="line.465"></a> -<span class="sourceLineNo">466</span> ZKUtil.createAndWatch(zookeeper, zookeeper.znodePaths.getZNodeForReplica(replicaId), data);<a name="line.466"></a> -<span class="sourceLineNo">467</span> }<a name="line.467"></a> -<span class="sourceLineNo">468</span> }<a name="line.468"></a> -<span class="sourceLineNo">469</span><a name="line.469"></a> -<span class="sourceLineNo">470</span> /**<a name="line.470"></a> -<span class="sourceLineNo">471</span> * Load the meta region state from the meta server ZNode.<a name="line.471"></a> -<span class="sourceLineNo">472</span> */<a name="line.472"></a> -<span class="sourceLineNo">473</span> public static RegionState getMetaRegionState(ZKWatcher zkw) throws KeeperException {<a name="line.473"></a> -<span class="sourceLineNo">474</span> return getMetaRegionState(zkw, RegionInfo.DEFAULT_REPLICA_ID);<a name="line.474"></a> -<span class="sourceLineNo">475</span> }<a name="line.475"></a> -<span class="sourceLineNo">476</span><a name="line.476"></a> -<span class="sourceLineNo">477</span> /**<a name="line.477"></a> -<span class="sourceLineNo">478</span> * Load the meta region state from the meta server ZNode.<a name="line.478"></a> -<span class="sourceLineNo">479</span> * @param zkw<a name="line.479"></a> -<span class="sourceLineNo">480</span> * @param replicaId<a name="line.480"></a> -<span class="sourceLineNo">481</span> * @return regionstate<a name="line.481"></a> -<span class="sourceLineNo">482</span> * @throws KeeperException<a name="line.482"></a> -<span class="sourceLineNo">483</span> */<a name="line.483"></a> -<span class="sourceLineNo">484</span> public static RegionState getMetaRegionState(ZKWatcher zkw, int replicaId)<a name="line.484"></a> -<span class="sourceLineNo">485</span> throws KeeperException {<a name="line.485"></a> -<span class="sourceLineNo">486</span> RegionState.State state = RegionState.State.OPEN;<a name="line.486"></a> -<span class="sourceLineNo">487</span> ServerName serverName = null;<a name="line.487"></a> -<span class="sourceLineNo">488</span> try {<a name="line.488"></a> -<span class="sourceLineNo">489</span> byte[] data = ZKUtil.getData(zkw, zkw.znodePaths.getZNodeForReplica(replicaId));<a name="line.489"></a> -<span class="sourceLineNo">490</span> if (data != null && data.length > 0 && ProtobufUtil.isPBMagicPrefix(data)) {<a name="line.490"></a> -<span class="sourceLineNo">491</span> try {<a name="line.491"></a> -<span class="sourceLineNo">492</span> int prefixLen = ProtobufUtil.lengthOfPBMagic();<a name="line.492"></a> -<span class="sourceLineNo">493</span> ZooKeeperProtos.MetaRegionServer rl =<a name="line.493"></a> -<span class="sourceLineNo">494</span> ZooKeeperProtos.MetaRegionServer.PARSER.parseFrom<a name="line.494"></a> -<span class="sourceLineNo">495</span> (data, prefixLen, data.length - prefixLen);<a name="line.495"></a> -<span class="sourceLineNo">496</span> if (rl.hasState()) {<a name="line.496"></a> -<span class="sourceLineNo">497</span> state = RegionState.State.convert(rl.getState());<a name="line.497"></a> -<span class="sourceLineNo">498</span> }<a name="line.498"></a> -<span class="sourceLineNo">499</span> HBaseProtos.ServerName sn = rl.getServer();<a name="line.499"></a> -<span class="sourceLineNo">500</span> serverName = ServerName.valueOf(<a name="line.500"></a> -<span class="sourceLineNo">501</span> sn.getHostName(), sn.getPort(), sn.getStartCode());<a name="line.501"></a> -<span class="sourceLineNo">502</span> } catch (InvalidProtocolBufferException e) {<a name="line.502"></a> -<span class="sourceLineNo">503</span> throw new DeserializationException("Unable to parse meta region location");<a name="line.503"></a> -<span class="sourceLineNo">504</span> }<a name="line.504"></a> -<span class="sourceLineNo">505</span> } else {<a name="line.505"></a> -<span class="sourceLineNo">506</span> // old style of meta region location?<a name="line.506"></a> -<span class="sourceLineNo">507</span> serverName = ProtobufUtil.parseServerNameFrom(data);<a name="line.507"></a> -<span class="sourceLineNo">508</span> }<a name="line.508"></a> -<span class="sourceLineNo">509</span> } catch (DeserializationException e) {<a name="line.509"></a> -<span class="sourceLineNo">510</span> throw ZKUtil.convert(e);<a name="line.510"></a> -<span class="sourceLineNo">511</span> } catch (InterruptedException e) {<a name="line.511"></a> -<span class="sourceLineNo">512</span> Thread.currentThread().interrupt();<a name="line.512"></a> -<span class="sourceLineNo">513</span> }<a name="line.513"></a> -<span class="sourceLineNo">514</span> if (serverName == null) {<a name="line.514"></a> -<span class="sourceLineNo">515</span> state = RegionState.State.OFFLINE;<a name="line.515"></a> -<span class="sourceLineNo">516</span> }<a name="line.516"></a> -<span class="sourceLineNo">517</span> return new RegionState(<a name="line.517"></a> -<span class="sourceLineNo">518</span> RegionReplicaUtil.getRegionInfoForReplica(<a name="line.518"></a> -<span class="sourceLineNo">519</span> RegionInfoBuilder.FIRST_META_REGIONINFO, replicaId),<a name="line.519"></a> -<span class="sourceLineNo">520</span> state, serverName);<a name="line.520"></a> -<span class="sourceLineNo">521</span> }<a name="line.521"></a> -<span class="sourceLineNo">522</span><a name="line.522"></a> -<span class="sourceLineNo">523</span> /**<a name="line.523"></a> -<span class="sourceLineNo">524</span> * Deletes the location of <code>hbase:meta</code> in ZooKeeper.<a name="line.524"></a> -<span class="sourceLineNo">525</span> * @param zookeeper zookeeper reference<a name="line.525"></a> -<span class="sourceLineNo">526</span> * @throws KeeperException unexpected zookeeper exception<a name="line.526"></a> -<span class="sourceLineNo">527</span> */<a name="line.527"></a> -<span class="sourceLineNo">528</span> public void deleteMetaLocation(ZKWatcher zookeeper)<a name="line.528"></a> -<span class="sourceLineNo">529</span> throws KeeperException {<a name="line.529"></a> -<span class="sourceLineNo">530</span> deleteMetaLocation(zookeeper, RegionInfo.DEFAULT_REPLICA_ID);<a name="line.530"></a> -<span class="sourceLineNo">531</span> }<a name="line.531"></a> -<span class="sourceLineNo">532</span><a name="line.532"></a> -<span class="sourceLineNo">533</span> public void deleteMetaLocation(ZKWatcher zookeeper, int replicaId)<a name="line.533"></a> -<span class="sourceLineNo">534</span> throws KeeperException {<a name="line.534"></a> -<span class="sourceLineNo">535</span> if (replicaId == RegionInfo.DEFAULT_REPLICA_ID) {<a name="line.535"></a> -<span class="sourceLineNo">536</span> LOG.info("Deleting hbase:meta region location in ZooKeeper");<a name="line.536"></a> -<span class="sourceLineNo">537</span> } else {<a name="line.537"></a> -<span class="sourceLineNo">538</span> LOG.info("Deleting hbase:meta for " + replicaId + " region location in ZooKeeper");<a name="line.538"></a> -<span class="sourceLineNo">539</span> }<a name="line.539"></a> -<span class="sourceLineNo">540</span> try {<a name="line.540"></a> -<span class="sourceLineNo">541</span> // Just delete the node. Don't need any watches.<a name="line.541"></a> -<span class="sourceLineNo">542</span> ZKUtil.deleteNode(zookeeper, zookeeper.znodePaths.getZNodeForReplica(replicaId));<a name="line.542"></a> -<span class="sourceLineNo">543</span> } catch(KeeperException.NoNodeException nne) {<a name="line.543"></a> -<span class="sourceLineNo">544</span> // Has already been deleted<a name="line.544"></a> -<span class="sourceLineNo">545</span> }<a name="line.545"></a> -<span class="sourceLineNo">546</span> }<a name="line.546"></a> -<span class="sourceLineNo">547</span> /**<a name="line.547"></a> -<span class="sourceLineNo">548</span> * Wait until the primary meta region is available. Get the secondary<a name="line.548"></a> -<span class="sourceLineNo">549</span> * locations as well but don't block for those.<a name="line.549"></a> -<span class="sourceLineNo">550</span> * @param zkw<a name="line.550"></a> -<span class="sourceLineNo">551</span> * @param timeout<a name="line.551"></a> -<span class="sourceLineNo">552</span> * @param conf<a name="line.552"></a> -<span class="sourceLineNo">553</span> * @return ServerName or null if we timed out.<a name="line.553"></a> -<span class="sourceLineNo">554</span> * @throws InterruptedException<a name="line.554"></a> -<span class="sourceLineNo">555</span> */<a name="line.555"></a> -<span class="sourceLineNo">556</span> public List<ServerName> blockUntilAvailable(final ZKWatcher zkw,<a name="line.556"></a> -<span class="sourceLineNo">557</span> final long timeout, Configuration conf)<a name="line.557"></a> -<span class="sourceLineNo">558</span> throws InterruptedException {<a name="line.558"></a> -<span class="sourceLineNo">559</span> int numReplicasConfigured = 1;<a name="line.559"></a> -<span class="sourceLineNo">560</span><a name="line.560"></a> -<span class="sourceLineNo">561</span> List<ServerName> servers = new ArrayList<>();<a name="line.561"></a> -<span class="sourceLineNo">562</span> // Make the blocking call first so that we do the wait to know<a name="line.562"></a> -<span class="sourceLineNo">563</span> // the znodes are all in place or timeout.<a name="line.563"></a> -<span class="sourceLineNo">564</span> ServerName server = blockUntilAvailable(zkw, timeout);<a name="line.564"></a> -<span class="sourceLineNo">565</span> if (server == null) return null;<a name="line.565"></a> -<span class="sourceLineNo">566</span> servers.add(server);<a name="line.566"></a> +<span class="sourceLineNo">226</span> if (sn == null) {<a name="line.226"></a> +<span class="sourceLineNo">227</span> throw new NotAllMetaRegionsOnlineException("Timed out; " + timeout + "ms");<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> return sn;<a name="line.230"></a> +<span class="sourceLineNo">231</span> }<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> * Waits indefinitely for availability of <code>hbase:meta</code>. Used during<a name="line.234"></a> +<span class="sourceLineNo">235</span> * cluster startup. Does not verify meta, just that something has been<a name="line.235"></a> +<span class="sourceLineNo">236</span> * set up in zk.<a name="line.236"></a> +<span class="sourceLineNo">237</span> * @see #waitMetaRegionLocation(ZKWatcher, long)<a name="line.237"></a> +<span class="sourceLineNo">238</span> * @throws InterruptedException if interrupted while waiting<a name="line.238"></a> +<span class="sourceLineNo">239</span> */<a name="line.239"></a> +<span class="sourceLineNo">240</span> public void waitMetaRegionLocation(ZKWatcher zkw) throws InterruptedException {<a name="line.240"></a> +<span class="sourceLineNo">241</span> long startTime = System.currentTimeMillis();<a name="line.241"></a> +<span class="sourceLineNo">242</span> while (!stopped) {<a name="line.242"></a> +<span class="sourceLineNo">243</span> try {<a name="line.243"></a> +<span class="sourceLineNo">244</span> if (waitMetaRegionLocation(zkw, 100) != null) {<a name="line.244"></a> +<span class="sourceLineNo">245</span> break;<a name="line.245"></a> +<span class="sourceLineNo">246</span> }<a name="line.246"></a> +<span class="sourceLineNo">247</span><a name="line.247"></a> +<span class="sourceLineNo">248</span> long sleepTime = System.currentTimeMillis() - startTime;<a name="line.248"></a> +<span class="sourceLineNo">249</span> // +1 in case sleepTime=0<a name="line.249"></a> +<span class="sourceLineNo">250</span> if ((sleepTime + 1) % 10000 == 0) {<a name="line.250"></a> +<span class="sourceLineNo">251</span> LOG.warn("Have been waiting for meta to be assigned for " + sleepTime + "ms");<a name="line.251"></a> +<span class="sourceLineNo">252</span> }<a name="line.252"></a> +<span class="sourceLineNo">253</span> } catch (NotAllMetaRegionsOnlineException e) {<a name="line.253"></a> +<span class="sourceLineNo">254</span> if (LOG.isTraceEnabled()) {<a name="line.254"></a> +<span class="sourceLineNo">255</span> LOG.trace("hbase:meta still not available, sleeping and retrying." +<a name="line.255"></a> +<span class="sourceLineNo">256</span> " Reason: " + e.getMessage());<a name="line.256"></a> +<span class="sourceLineNo">257</span> }<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><a name="line.261"></a> +<span class="sourceLineNo">262</span> /**<a name="line.262"></a> +<span class="sourceLineNo">263</span> * Verify <code>hbase:meta</code> is deployed and accessible.<a name="line.263"></a> +<span class="sourceLineNo">264</span> *<a name="line.264"></a> +<span class="sourceLineNo">265</span> * @param hConnection the connection to use<a name="line.265"></a> +<span class="sourceLineNo">266</span> * @param zkw reference to the {@link ZKWatcher} which also contains configuration and operation<a name="line.266"></a> +<span class="sourceLineNo">267</span> * @param timeout How long to wait on zk for meta address (passed through to<a name="line.267"></a> +<span class="sourceLineNo">268</span> * the internal call to {@link #getMetaServerConnection}.<a name="line.268"></a> +<span class="sourceLineNo">269</span> * @return True if the <code>hbase:meta</code> location is healthy.<a name="line.269"></a> +<span class="sourceLineNo">270</span> * @throws IOException if the number of retries for getting the connection is exceeded<a name="line.270"></a> +<span class="sourceLineNo">271</span> * @throws InterruptedException if waiting for the socket operation fails<a name="line.271"></a> +<span class="sourceLineNo">272</span> */<a name="line.272"></a> +<span class="sourceLineNo">273</span> public boolean verifyMetaRegionLocation(ClusterConnection hConnection, ZKWatcher zkw,<a name="line.273"></a> +<span class="sourceLineNo">274</span> final long timeout) throws InterruptedException, IOException {<a name="line.274"></a> +<span class="sourceLineNo">275</span> return verifyMetaRegionLocation(hConnection, zkw, timeout, RegionInfo.DEFAULT_REPLICA_ID);<a name="line.275"></a> +<span class="sourceLineNo">276</span> }<a name="line.276"></a> +<span class="sourceLineNo">277</span><a name="line.277"></a> +<span class="sourceLineNo">278</span> /**<a name="line.278"></a> +<span class="sourceLineNo">279</span> * Verify <code>hbase:meta</code> is deployed and accessible.<a name="line.279"></a> +<span class="sourceLineNo">280</span> *<a name="line.280"></a> +<span class="sourceLineNo">281</span> * @param connection the connection to use<a name="line.281"></a> +<span class="sourceLineNo">282</span> * @param zkw reference to the {@link ZKWatcher} which also contains configuration and operation<a name="line.282"></a> +<span class="sourceLineNo">283</span> * @param timeout How long to wait on zk for meta address (passed through to<a name="line.283"></a> +<span class="sourceLineNo">284</span> * @param replicaId the ID of the replica<a name="line.284"></a> +<span class="sourceLineNo">285</span> * @return True if the <code>hbase:meta</code> location is healthy.<a name="line.285"></a> +<span class="sourceLineNo">286</span> * @throws InterruptedException if waiting for the socket operation fails<a name="line.286"></a> +<span class="sourceLineNo">287</span> * @throws IOException if the number of retries for getting the connection is exceeded<a name="line.287"></a> +<span class="sourceLineNo">288</span> */<a name="line.288"></a> +<span class="sourceLineNo">289</span> public boolean verifyMetaRegionLocation(ClusterConnection connection, ZKWatcher zkw,<a name="line.289"></a> +<span class="sourceLineNo">290</span> final long timeout, int replicaId) throws InterruptedException, IOException {<a name="line.290"></a> +<span class="sourceLineNo">291</span> AdminProtos.AdminService.BlockingInterface service = null;<a name="line.291"></a> +<span class="sourceLineNo">292</span> try {<a name="line.292"></a> +<span class="sourceLineNo">293</span> service = getMetaServerConnection(connection, zkw, timeout, replicaId);<a name="line.293"></a> +<span class="sourceLineNo">294</span> } catch (NotAllMetaRegionsOnlineException e) {<a name="line.294"></a> +<span class="sourceLineNo">295</span> // Pass<a name="line.295"></a> +<span class="sourceLineNo">296</span> } catch (ServerNotRunningYetException e) {<a name="line.296"></a> +<span class="sourceLineNo">297</span> // Pass -- remote server is not up so can't be carrying root<a name="line.297"></a> +<span class="sourceLineNo">298</span> } catch (UnknownHostException e) {<a name="line.298"></a> +<span class="sourceLineNo">299</span> // Pass -- server name doesn't resolve so it can't be assigned anything.<a name="line.299"></a> +<span class="sourceLineNo">300</span> } catch (RegionServerStoppedException e) {<a name="line.300"></a> +<span class="sourceLineNo">301</span> // Pass -- server name sends us to a server that is dying or already dead.<a name="line.301"></a> +<span class="sourceLineNo">302</span> }<a name="line.302"></a> +<span class="sourceLineNo">303</span> return (service != null) && verifyRegionLocation(connection, service,<a name="line.303"></a> +<span class="sourceLineNo">304</span> getMetaRegionLocation(zkw, replicaId), RegionReplicaUtil.getRegionInfoForReplica(<a name="line.304"></a> +<span class="sourceLineNo">305</span> RegionInfoBuilder.FIRST_META_REGIONINFO, replicaId).getRegionName());<a name="line.305"></a> +<span class="sourceLineNo">306</span> }<a name="line.306"></a> +<span class="sourceLineNo">307</span><a name="line.307"></a> +<span class="sourceLineNo">308</span> /**<a name="line.308"></a> +<span class="sourceLineNo">309</span> * Verify we can connect to <code>hostingServer</code> and that its carrying<a name="line.309"></a> +<span class="sourceLineNo">310</span> * <code>regionName</code>.<a name="line.310"></a> +<span class="sourceLineNo">311</span> * @param hostingServer Interface to the server hosting <code>regionName</code><a name="line.311"></a> +<span class="sourceLineNo">312</span> * @param address The servername that goes with the <code>metaServer</code> interface.<a name="line.312"></a> +<span class="sourceLineNo">313</span> * Used logging.<a name="line.313"></a> +<span class="sourceLineNo">314</span> * @param regionName The regionname we are interested in.<a name="line.314"></a> +<span class="sourceLineNo">315</span> * @return True if we were able to verify the region located at other side of the interface.<a name="line.315"></a> +<span class="sourceLineNo">316</span> */<a name="line.316"></a> +<span class="sourceLineNo">317</span> // TODO: We should be able to get the ServerName from the AdminProtocol<a name="line.317"></a> +<span class="sourceLineNo">318</span> // rather than have to pass it in. Its made awkward by the fact that the<a name="line.318"></a> +<span class="sourceLineNo">319</span> // HRI is likely a proxy against remote server so the getServerName needs<a name="line.319"></a> +<span class="sourceLineNo">320</span> // to be fixed to go to a local method or to a cache before we can do this.<a name="line.320"></a> +<span class="sourceLineNo">321</span> private boolean verifyRegionLocation(final ClusterConnection connection,<a name="line.321"></a> +<span class="sourceLineNo">322</span> AdminService.BlockingInterface hostingServer, final ServerName address,<a name="line.322"></a> +<span class="sourceLineNo">323</span> final byte [] regionName) {<a name="line.323"></a> +<span class="sourceLineNo">324</span> if (hostingServer == null) {<a name="line.324"></a> +<span class="sourceLineNo">325</span> LOG.info("Passed hostingServer is null");<a name="line.325"></a> +<span class="sourceLineNo">326</span> return false;<a name="line.326"></a> +<span class="sourceLineNo">327</span> }<a name="line.327"></a> +<span class="sourceLineNo">328</span> Throwable t;<a name="line.328"></a> +<span class="sourceLineNo">329</span> HBaseRpcController controller = connection.getRpcControllerFactory().newController();<a name="line.329"></a> +<span class="sourceLineNo">330</span> try {<a name="line.330"></a> +<span class="sourceLineNo">331</span> // Try and get regioninfo from the hosting server.<a name="line.331"></a> +<span class="sourceLineNo">332</span> return ProtobufUtil.getRegionInfo(controller, hostingServer, regionName) != null;<a name="line.332"></a> +<span class="sourceLineNo">333</span> } catch (ConnectException e) {<a name="line.333"></a> +<span class="sourceLineNo">334</span> t = e;<a name="line.334"></a> +<span class="sourceLineNo">335</span> } catch (RetriesExhaustedException e) {<a name="line.335"></a> +<span class="sourceLineNo">336</span> t = e;<a name="line.336"></a> +<span class="sourceLineNo">337</span> } catch (RemoteException e) {<a name="line.337"></a> +<span class="sourceLineNo">338</span> IOException ioe = e.unwrapRemoteException();<a name="line.338"></a> +<span class="sourceLineNo">339</span> t = ioe;<a name="line.339"></a> +<span class="sourceLineNo">340</span> } catch (IOException e) {<a name="line.340"></a> +<span class="sourceLineNo">341</span> Throwable cause = e.getCause();<a name="line.341"></a> +<span class="sourceLineNo">342</span> if (cause != null && cause instanceof EOFException) {<a name="line.342"></a> +<span class="sourceLineNo">343</span> t = cause;<a name="line.343"></a> +<span class="sourceLineNo">344</span> } else if (cause != null && cause.getMessage() != null<a name="line.344"></a> +<span class="sourceLineNo">345</span> && cause.getMessage().contains("Connection reset")) {<a name="line.345"></a> +<span class="sourceLineNo">346</span> t = cause;<a name="line.346"></a> +<span class="sourceLineNo">347</span> } else {<a name="line.347"></a> +<span class="sourceLineNo">348</span> t = e;<a name="line.348"></a> +<span class="sourceLineNo">349</span> }<a name="line.349"></a> +<span class="sourceLineNo">350</span> }<a name="line.350"></a> +<span class="sourceLineNo">351</span> LOG.info("Failed verification of " + Bytes.toStringBinary(regionName) +<a name="line.351"></a> +<span class="sourceLineNo">352</span> " at address=" + address + ", exception=" + t.getMessage());<a name="line.352"></a> +<span class="sourceLineNo">353</span> return false;<a name="line.353"></a> +<span class="sourceLineNo">354</span> }<a name="line.354"></a> +<span class="sourceLineNo">355</span><a name="line.355"></a> +<span class="sourceLineNo">356</span> /**<a name="line.356"></a> +<span class="sourceLineNo">357</span> * Gets a connection to the server hosting meta, as reported by ZooKeeper, waiting up to the<a name="line.357"></a> +<span class="sourceLineNo">358</span> * specified timeout for availability.<a name="line.358"></a> +<span class="sourceLineNo">359</span> *<a name="line.359"></a> +<span class="sourceLineNo">360</span> * <p>WARNING: Does not retry. Use an {@link org.apache.hadoop.hbase.client.HTable} instead.<a name="line.360"></a> +<span class="sourceLineNo">361</span> *<a name="line.361"></a> +<span class="sourceLineNo">362</span> * @param connection the connection to use<a name="line.362"></a> +<span class="sourceLineNo">363</span> * @param zkw reference to the {@link ZKWatcher} which also contains configuration and operation<a name="line.363"></a> +<span class="sourceLineNo">364</span> * @param timeout How long to wait on meta location<a name="line.364"></a> +<span class="sourceLineNo">365</span> * @param replicaId the ID of the replica<a name="line.365"></a> +<span class="sourceLineNo">366</span> * @return connection to server hosting meta<a name="line.366"></a> +<span class="sourceLineNo">367</span> * @throws InterruptedException if waiting for the socket operation fails<a name="line.367"></a> +<span class="sourceLineNo">368</span> * @throws IOException if the number of retries for getting the connection is exceeded<a name="line.368"></a> +<span class="sourceLineNo">369</span> */<a name="line.369"></a> +<span class="sourceLineNo">370</span> private AdminService.BlockingInterface getMetaServerConnection(ClusterConnection connection,<a name="line.370"></a> +<span class="sourceLineNo">371</span> ZKWatcher zkw, long timeout, int replicaId) throws InterruptedException, IOException {<a name="line.371"></a> +<span class="sourceLineNo">372</span> return getCachedConnection(connection, waitMetaRegionLocation(zkw, replicaId, timeout));<a name="line.372"></a> +<span class="sourceLineNo">373</span> }<a name="line.373"></a> +<span class="sourceLineNo">374</span><a name="line.374"></a> +<span class="sourceLineNo">375</span> /**<a name="line.375"></a> +<span class="sourceLineNo">376</span> * @param sn ServerName to get a connection against.<a name="line.376"></a> +<span class="sourceLineNo">377</span> * @return The AdminProtocol we got when we connected to <code>sn</code><a name="line.377"></a> +<span class="sourceLineNo">378</span> * May have come from cache, may not be good, may have been setup by this invocation, or<a name="line.378"></a> +<span class="sourceLineNo">379</span> * may be null.<a name="line.379"></a> +<span class="sourceLineNo">380</span> * @throws IOException if the number of retries for getting the connection is exceeded<a name="line.380"></a> +<span class="sourceLineNo">381</span> */<a name="line.381"></a> +<span class="sourceLineNo">382</span> private static AdminService.BlockingInterface getCachedConnection(ClusterConnection connection,<a name="line.382"></a> +<span class="sourceLineNo">383</span> ServerName sn) throws IOException {<a name="line.383"></a> +<span class="sourceLineNo">384</span> if (sn == null) {<a name="line.384"></a> +<span class="sourceLineNo">385</span> return null;<a name="line.385"></a> +<span class="sourceLineNo">386</span> }<a name="line.386"></a> +<span class="sourceLineNo">387</span> AdminService.BlockingInterface service = null;<a name="line.387"></a> +<span class="sourceLineNo">388</span> try {<a name="line.388"></a> +<span class="sourceLineNo">389</span> service = connection.getAdmin(sn);<a name="line.389"></a> +<span class="sourceLineNo">390</span> } catch (RetriesExhaustedException e) {<a name="line.390"></a> +<span class="sourceLineNo">391</span> if (e.getCause() != null && e.getCause() instanceof ConnectException) {<a name="line.391"></a> +<span class="sourceLineNo">392</span> // Catch this; presume it means the cached connection has gone bad.<a name="line.392"></a> +<span class="sourceLineNo">393</span> } else {<a name="line.393"></a> +<span class="sourceLineNo">394</span> throw e;<a name="line.394"></a> +<span class="sourceLineNo">395</span> }<a name="line.395"></a> +<span class="sourceLineNo">396</span> } catch (SocketTimeoutException e) {<a name="line.396"></a> +<span class="sourceLineNo">397</span> LOG.debug("Timed out connecting to " + sn);<a name="line.397"></a> +<span class="sourceLineNo">398</span> } catch (NoRouteToHostException e) {<a name="line.398"></a> +<span class="sourceLineNo">399</span> LOG.debug("Connecting to " + sn, e);<a name="line.399"></a> +<span class="sourceLineNo">400</span> } catch (SocketException e) {<a name="line.400"></a> +<span class="sourceLineNo">401</span> LOG.debug("Exception connecting to " + sn);<a name="line.401"></a> +<span class="sourceLineNo">402</span> } catch (UnknownHostException e) {<a name="line.402"></a> +<span class="sourceLineNo">403</span> LOG.debug("Unknown host exception connecting to " + sn);<a name="line.403"></a> +<span class="sourceLineNo">404</span> } catch (FailedServerException e) {<a name="line.404"></a> +<span class="sourceLineNo">405</span> if (LOG.isDebugEnabled()) {<a name="line.405"></a> +<span class="sourceLineNo">406</span> LOG.debug("Server " + sn + " is in failed server list.");<a name="line.406"></a> +<span class="sourceLineNo">407</span> }<a name="line.407"></a> +<span class="sourceLineNo">408</span> } catch (IOException ioe) {<a name="line.408"></a> +<span class="sourceLineNo">409</span> Throwable cause = ioe.getCause();<a name="line.409"></a> +<span class="sourceLineNo">410</span> if (ioe instanceof ConnectException) {<a name="line.410"></a> +<span class="sourceLineNo">411</span> // Catch. Connect refused.<a name="line.411"></a> +<span class="sourceLineNo">412</span> } else if (cause != null && cause instanceof EOFException) {<a name="line.412"></a> +<span class="sourceLineNo">413</span> // Catch. Other end disconnected us.<a name="line.413"></a> +<span class="sourceLineNo">414</span> } else if (cause != null && cause.getMessage() != null &&<a name="line.414"></a> +<span class="sourceLineNo">415</span> cause.getMessage().toLowerCase(Locale.ROOT).contains("connection reset")) {<a name="line.415"></a> +<span class="sourceLineNo">416</span> // Catch. Connection reset.<a name="line.416"></a> +<span class="sourceLineNo">417</span> } else {<a name="line.417"></a> +<span class="sourceLineNo">418</span> throw ioe;<a name="line.418"></a> +<span class="sourceLineNo">419</span> }<a name="line.419"></a> +<span class="sourceLineNo">420</span><a name="line.420"></a> +<span class="sourceLineNo">421</span> }<a name="line.421"></a> +<span class="sourceLineNo">422</span> return service;<a name="line.422"></a> +<span class="sourceLineNo">423</span> }<a name="line.423"></a> +<span class="sourceLineNo">424</span><a name="line.424"></a> +<span class="sourceLineNo">425</span> /**<a name="line.425"></a> +<span class="sourceLineNo">426</span> * Sets the location of <code>hbase:meta</code> in ZooKeeper to the<a name="line.426"></a> +<span class="sourceLineNo">427</span> * specified server address.<a name="line.427"></a> +<span class="sourceLineNo">428</span> * @param zookeeper zookeeper reference<a name="line.428"></a> +<span class="sourceLineNo">429</span> * @param serverName The server hosting <code>hbase:meta</code><a name="line.429"></a> +<span class="sourceLineNo">430</span> * @param state The region transition state<a name="line.430"></a> +<span class="sourceLineNo">431</span> * @throws KeeperException unexpected zookeeper exception<a name="line.431"></a> +<span class="sourceLineNo">432</span> */<a name="line.432"></a> +<span class="sourceLineNo">433</span> public static void setMetaLocation(ZKWatcher zookeeper,<a name="line.433"></a> +<span class="sourceLineNo">434</span> ServerName serverName, RegionState.State state) throws KeeperException {<a name="line.434"></a> +<span class="sourceLineNo">435</span> setMetaLocation(zookeeper, serverName, RegionInfo.DEFAULT_REPLICA_ID, state);<a name="line.435"></a> +<span class="sourceLineNo">436</span> }<a name="line.436"></a> +<span class="sourceLineNo">437</span><a name="line.437"></a> +<span class="sourceLineNo">438</span> /**<a name="line.438"></a> +<span class="sourceLineNo">439</span> * Sets the location of <code>hbase:meta</code> in ZooKeeper to the specified server address.<a name="line.439"></a> +<span class="sourceLineNo">440</span> * @param zookeeper reference to the {@link ZKWatcher} which also contains configuration and<a name="line.440"></a> +<span class="sourceLineNo">441</span> * operation<a name="line.441"></a> +<span class="sourceLineNo">442</span> * @param serverName the name of the server<a name="line.442"></a> +<span class="sourceLineNo">443</span> * @param replicaId the ID of the replica<a name="line.443"></a> +<span class="sourceLineNo">444</span> * @param state the state of the region<a name="line.444"></a> +<span class="sourceLineNo">445</span> * @throws KeeperException if a ZooKeeper operation fails<a name="line.445"></a> +<span class="sourceLineNo">446</span> */<a name="line.446"></a> +<span class="sourceLineNo">447</span> public static void setMetaLocation(ZKWatcher zookeeper, ServerName serverName, int replicaId,<a name="line.447"></a> +<span class="sourceLineNo">448</span> RegionState.State state) throws KeeperException {<a name="line.448"></a> +<span class="sourceLineNo">449</span> if (serverName == null) {<a name="line.449"></a> +<span class="sourceLineNo">450</span> LOG.warn("Tried to set null ServerName in hbase:meta; skipping -- ServerName required");<a name="line.450"></a> +<span class="sourceLineNo">451</span> return;<a name="line.451"></a> +<span class="sourceLineNo">452</span> }<a name="line.452"></a> +<span class="sourceLineNo">453</span> LOG.info("Setting hbase:meta (replicaId=" + replicaId + ") location in ZooKeeper as " +<a name="line.453"></a> +<span class="sourceLineNo">454</span> serverName);<a name="line.454"></a> +<span class="sourceLineNo">455</span> // Make the MetaRegionServer pb and then get its bytes and save this as<a name="line.455"></a> +<span class="sourceLineNo">456</span> // the znode content.<a name="line.456"></a> +<span class="sourceLineNo">457</span> MetaRegionServer pbrsr = MetaRegionServer.newBuilder()<a name="line.457"></a> +<span class="sourceLineNo">458</span> .setServer(ProtobufUtil.toServerName(serverName))<a name="line.458"></a> +<span class="sourceLineNo">459</span> .setRpcVersion(HConstants.RPC_CURRENT_VERSION)<a name="line.459"></a> +<span class="sourceLineNo">460</span> .setState(state.convert()).build();<a name="line.460"></a> +<span class="sourceLineNo">461</span> byte[] data = ProtobufUtil.prependPBMagic(pbrsr.toByteArray());<a name="line.461"></a> +<span class="sourceLineNo">462</span> try {<a name="line.462"></a> +<span class="sourceLineNo">463</span> ZKUtil.setData(zookeeper,<a name="line.463"></a> +<span class="sourceLineNo">464</span> zookeeper.znodePaths.getZNodeForReplica(replicaId), data);<a name="line.464"></a> +<span class="sourceLineNo">465</span> } catch(KeeperException.NoNodeException nne) {<a name="line.465"></a> +<span class="sourceLineNo">466</span> if (replicaId == RegionInfo.DEFAULT_REPLICA_ID) {<a name="line.466"></a> +<span class="sourceLineNo">467</span> LOG.debug("META region location doesn't exist, create it");<a name="line.467"></a> +<span class="sourceLineNo">468</span> } else {<a name="line.468"></a> +<span class="sourceLineNo">469</span> LOG.debug("META region location doesn't exist for replicaId=" + replicaId +<a name="line.469"></a> +<span class="sourceLineNo">470</span> ", create it");<a name="line.470"></a> +<span class="sourceLineNo">471</span> }<a name="line.471"></a> +<span class="sourceLineNo">472</span> ZKUtil.createAndWatch(zookeeper, zookeeper.znodePaths.getZNodeForReplica(replicaId), data);<a name="line.472"></a> +<span class="sourceLineNo">473</span> }<a name="line.473"></a> +<span class="sourceLineNo">474</span> }<a name="line.474"></a> +<span class="sourceLineNo">475</span><a name="line.475"></a> +<span class="sourceLineNo">476</span> /**<a name="line.476"></a> +<span class="sourceLineNo">477</span> * Load the meta region state from the meta server ZNode.<a name="line.477"></a> +<span class="sourceLineNo">478</span> */<a name="line.478"></a> +<span class="sourceLineNo">479</span> public static RegionState getMetaRegionState(ZKWatcher zkw) throws KeeperException {<a name="line.479"></a> +<span class="sourceLineNo">480</span> return getMetaRegionState(zkw, RegionInfo.DEFAULT_REPLICA_ID);<a name="line.480"></a> +<span class="sourceLineNo">481</span> }<a name="line.481"></a> +<span class="sourceLineNo">482</span><a name="line.482"></a> +<span class="sourceLineNo">483</span> /**<a name="line.483"></a> +<span class="sourceLineNo">484</span> * Load the meta region state from the meta server ZNode.<a name="line.484"></a> +<span class="sourceLineNo">485</span> *<a name="line.485"></a> +<span class="sourceLineNo">486</span> * @param zkw reference to the {@link ZKWatcher} which also contains configuration and operation<a name="line.486"></a> +<span class="sourceLineNo">487</span> * @param replicaId the ID of the replica<a name="line.487"></a> +<span class="sourceLineNo">488</span> * @return regionstate<a name="line.488"></a> +<span class="sourceLineNo">489</span> * @throws KeeperException if a ZooKeeper operation fails<a name="line.489"></a> +<span class="sourceLineNo">490</span> */<a name="line.490"></a> +<span class="sourceLineNo">491</span> public static RegionState getMetaRegionState(ZKWatcher zkw, int replicaId)<a name="line.491"></a> +<span class="sourceLineNo">492</span> throws KeeperException {<a name="line.492"></a> +<span class="sourceLineNo">493</span> RegionState.State state = RegionState.State.OPEN;<a name="line.493"></a> +<span class="sourceLineNo">494</span> ServerName serverName = null;<a name="line.494"></a> +<span class="sourceLineNo">495</span> try {<a name="line.495"></a> +<span class="sourceLineNo">496</span> byte[] data = ZKUtil.getData(zkw, zkw.znodePaths.getZNodeForReplica(replicaId));<a name="line.496"></a> +<span class="sourceLineNo">497</span> if (data != null && data.length > 0 && ProtobufUtil.isPBMagicPrefix(data)) {<a name="line.497"></a> +<span class="sourceLineNo">498</span> try {<a name="line.498"></a> +<span class="sourceLineNo">499</span> int prefixLen = ProtobufUtil.lengthOfPBMagic();<a name="line.499"></a> +<span class="sourceLineNo">500</span> ZooKeeperProtos.MetaRegionServer rl =<a name="line.500"></a> +<span class="sourceLineNo">501</span> ZooKeeperProtos.MetaRegionServer.PARSER.parseFrom(data, prefixLen,<a name="line.501"></a> +<span class="sourceLineNo">502</span> data.length - prefixLen);<a name="line.502"></a> +<span class="sourceLineNo">503</span> if (rl.hasState()) {<a nam
<TRUNCATED>
