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 2018/05/16 18:49:43 UTC
[02/21] hbase-site git commit: Published site at
2c32272dfa40dbf574343901c2ddea9319ca0bd5.
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/ec5d5242/testdevapidocs/src-html/org/apache/hadoop/hbase/wal/IOTestProvider.AllowedOperations.html
----------------------------------------------------------------------
diff --git a/testdevapidocs/src-html/org/apache/hadoop/hbase/wal/IOTestProvider.AllowedOperations.html b/testdevapidocs/src-html/org/apache/hadoop/hbase/wal/IOTestProvider.AllowedOperations.html
index 47245bb..0e3d2ab 100644
--- a/testdevapidocs/src-html/org/apache/hadoop/hbase/wal/IOTestProvider.AllowedOperations.html
+++ b/testdevapidocs/src-html/org/apache/hadoop/hbase/wal/IOTestProvider.AllowedOperations.html
@@ -100,203 +100,202 @@
<span class="sourceLineNo">092</span> /**<a name="line.92"></a>
<span class="sourceLineNo">093</span> * @param factory factory that made us, identity used for FS layout. may not be null<a name="line.93"></a>
<span class="sourceLineNo">094</span> * @param conf may not be null<a name="line.94"></a>
-<span class="sourceLineNo">095</span> * @param listeners may be null<a name="line.95"></a>
-<span class="sourceLineNo">096</span> * @param providerId differentiate between providers from one facotry, used for FS layout. may be<a name="line.96"></a>
-<span class="sourceLineNo">097</span> * null<a name="line.97"></a>
-<span class="sourceLineNo">098</span> */<a name="line.98"></a>
-<span class="sourceLineNo">099</span> @Override<a name="line.99"></a>
-<span class="sourceLineNo">100</span> public void init(WALFactory factory, Configuration conf, String providerId) throws IOException {<a name="line.100"></a>
-<span class="sourceLineNo">101</span> if (factory != null) {<a name="line.101"></a>
-<span class="sourceLineNo">102</span> throw new IllegalStateException("WALProvider.init should only be called once.");<a name="line.102"></a>
-<span class="sourceLineNo">103</span> }<a name="line.103"></a>
-<span class="sourceLineNo">104</span> this.factory = factory;<a name="line.104"></a>
-<span class="sourceLineNo">105</span> this.conf = conf;<a name="line.105"></a>
-<span class="sourceLineNo">106</span> this.providerId = providerId != null ? providerId : DEFAULT_PROVIDER_ID;<a name="line.106"></a>
+<span class="sourceLineNo">095</span> * @param providerId differentiate between providers from one facotry, used for FS layout. may be<a name="line.95"></a>
+<span class="sourceLineNo">096</span> * null<a name="line.96"></a>
+<span class="sourceLineNo">097</span> */<a name="line.97"></a>
+<span class="sourceLineNo">098</span> @Override<a name="line.98"></a>
+<span class="sourceLineNo">099</span> public void init(WALFactory factory, Configuration conf, String providerId) throws IOException {<a name="line.99"></a>
+<span class="sourceLineNo">100</span> if (factory != null) {<a name="line.100"></a>
+<span class="sourceLineNo">101</span> throw new IllegalStateException("WALProvider.init should only be called once.");<a name="line.101"></a>
+<span class="sourceLineNo">102</span> }<a name="line.102"></a>
+<span class="sourceLineNo">103</span> this.factory = factory;<a name="line.103"></a>
+<span class="sourceLineNo">104</span> this.conf = conf;<a name="line.104"></a>
+<span class="sourceLineNo">105</span> this.providerId = providerId != null ? providerId : DEFAULT_PROVIDER_ID;<a name="line.105"></a>
+<span class="sourceLineNo">106</span><a name="line.106"></a>
<span class="sourceLineNo">107</span><a name="line.107"></a>
-<span class="sourceLineNo">108</span><a name="line.108"></a>
-<span class="sourceLineNo">109</span> }<a name="line.109"></a>
-<span class="sourceLineNo">110</span><a name="line.110"></a>
-<span class="sourceLineNo">111</span> @Override<a name="line.111"></a>
-<span class="sourceLineNo">112</span> public List<WAL> getWALs() {<a name="line.112"></a>
-<span class="sourceLineNo">113</span> return Collections.singletonList(log);<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> private FSHLog createWAL() throws IOException {<a name="line.116"></a>
-<span class="sourceLineNo">117</span> String logPrefix = factory.factoryId + WAL_FILE_NAME_DELIMITER + providerId;<a name="line.117"></a>
-<span class="sourceLineNo">118</span> return new IOTestWAL(CommonFSUtils.getWALFileSystem(conf), CommonFSUtils.getWALRootDir(conf),<a name="line.118"></a>
-<span class="sourceLineNo">119</span> AbstractFSWALProvider.getWALDirectoryName(factory.factoryId),<a name="line.119"></a>
-<span class="sourceLineNo">120</span> HConstants.HREGION_OLDLOGDIR_NAME, conf, listeners, true, logPrefix,<a name="line.120"></a>
-<span class="sourceLineNo">121</span> META_WAL_PROVIDER_ID.equals(providerId) ? META_WAL_PROVIDER_ID : null);<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> @Override<a name="line.124"></a>
-<span class="sourceLineNo">125</span> public WAL getWAL(RegionInfo region) throws IOException {<a name="line.125"></a>
-<span class="sourceLineNo">126</span> FSHLog log = this.log;<a name="line.126"></a>
-<span class="sourceLineNo">127</span> if (log != null) {<a name="line.127"></a>
-<span class="sourceLineNo">128</span> return log;<a name="line.128"></a>
-<span class="sourceLineNo">129</span> }<a name="line.129"></a>
-<span class="sourceLineNo">130</span> synchronized (this) {<a name="line.130"></a>
-<span class="sourceLineNo">131</span> log = this.log;<a name="line.131"></a>
-<span class="sourceLineNo">132</span> if (log == null) {<a name="line.132"></a>
-<span class="sourceLineNo">133</span> log = createWAL();<a name="line.133"></a>
-<span class="sourceLineNo">134</span> this.log = log;<a name="line.134"></a>
-<span class="sourceLineNo">135</span> }<a name="line.135"></a>
-<span class="sourceLineNo">136</span> }<a name="line.136"></a>
-<span class="sourceLineNo">137</span> return log;<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> @Override<a name="line.140"></a>
-<span class="sourceLineNo">141</span> public void close() throws IOException {<a name="line.141"></a>
-<span class="sourceLineNo">142</span> FSHLog log = this.log;<a name="line.142"></a>
-<span class="sourceLineNo">143</span> if (log != null) {<a name="line.143"></a>
-<span class="sourceLineNo">144</span> log.close();<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><a name="line.147"></a>
-<span class="sourceLineNo">148</span> @Override<a name="line.148"></a>
-<span class="sourceLineNo">149</span> public void shutdown() throws IOException {<a name="line.149"></a>
-<span class="sourceLineNo">150</span> FSHLog log = this.log;<a name="line.150"></a>
-<span class="sourceLineNo">151</span> if (log != null) {<a name="line.151"></a>
-<span class="sourceLineNo">152</span> log.shutdown();<a name="line.152"></a>
-<span class="sourceLineNo">153</span> }<a name="line.153"></a>
-<span class="sourceLineNo">154</span> }<a name="line.154"></a>
-<span class="sourceLineNo">155</span><a name="line.155"></a>
-<span class="sourceLineNo">156</span> private static class IOTestWAL extends FSHLog {<a name="line.156"></a>
-<span class="sourceLineNo">157</span><a name="line.157"></a>
-<span class="sourceLineNo">158</span> private final boolean doFileRolls;<a name="line.158"></a>
-<span class="sourceLineNo">159</span><a name="line.159"></a>
-<span class="sourceLineNo">160</span> // Used to differntiate between roll calls before and after we finish construction.<a name="line.160"></a>
-<span class="sourceLineNo">161</span> private final boolean initialized;<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> * Create an edit log at the given <code>dir</code> location.<a name="line.164"></a>
-<span class="sourceLineNo">165</span> *<a name="line.165"></a>
-<span class="sourceLineNo">166</span> * You should never have to load an existing log. If there is a log at<a name="line.166"></a>
-<span class="sourceLineNo">167</span> * startup, it should have already been processed and deleted by the time the<a name="line.167"></a>
-<span class="sourceLineNo">168</span> * WAL object is started up.<a name="line.168"></a>
-<span class="sourceLineNo">169</span> *<a name="line.169"></a>
-<span class="sourceLineNo">170</span> * @param fs filesystem handle<a name="line.170"></a>
-<span class="sourceLineNo">171</span> * @param rootDir path to where logs and oldlogs<a name="line.171"></a>
-<span class="sourceLineNo">172</span> * @param logDir dir where wals are stored<a name="line.172"></a>
-<span class="sourceLineNo">173</span> * @param archiveDir dir where wals are archived<a name="line.173"></a>
-<span class="sourceLineNo">174</span> * @param conf configuration to use<a name="line.174"></a>
-<span class="sourceLineNo">175</span> * @param listeners Listeners on WAL events. Listeners passed here will<a name="line.175"></a>
-<span class="sourceLineNo">176</span> * be registered before we do anything else; e.g. the<a name="line.176"></a>
-<span class="sourceLineNo">177</span> * Constructor {@link #rollWriter()}.<a name="line.177"></a>
-<span class="sourceLineNo">178</span> * @param failIfWALExists If true IOException will be thrown if files related to this wal<a name="line.178"></a>
-<span class="sourceLineNo">179</span> * already exist.<a name="line.179"></a>
-<span class="sourceLineNo">180</span> * @param prefix should always be hostname and port in distributed env and<a name="line.180"></a>
-<span class="sourceLineNo">181</span> * it will be URL encoded before being used.<a name="line.181"></a>
-<span class="sourceLineNo">182</span> * If prefix is null, "wal" will be used<a name="line.182"></a>
-<span class="sourceLineNo">183</span> * @param suffix will be url encoded. null is treated as empty. non-empty must start with<a name="line.183"></a>
-<span class="sourceLineNo">184</span> * {@link AbstractFSWALProvider#WAL_FILE_NAME_DELIMITER}<a name="line.184"></a>
-<span class="sourceLineNo">185</span> * @throws IOException<a name="line.185"></a>
-<span class="sourceLineNo">186</span> */<a name="line.186"></a>
-<span class="sourceLineNo">187</span> public IOTestWAL(final FileSystem fs, final Path rootDir, final String logDir,<a name="line.187"></a>
-<span class="sourceLineNo">188</span> final String archiveDir, final Configuration conf,<a name="line.188"></a>
-<span class="sourceLineNo">189</span> final List<WALActionsListener> listeners,<a name="line.189"></a>
-<span class="sourceLineNo">190</span> final boolean failIfWALExists, final String prefix, final String suffix)<a name="line.190"></a>
-<span class="sourceLineNo">191</span> throws IOException {<a name="line.191"></a>
-<span class="sourceLineNo">192</span> super(fs, rootDir, logDir, archiveDir, conf, listeners, failIfWALExists, prefix, suffix);<a name="line.192"></a>
-<span class="sourceLineNo">193</span> Collection<String> operations = conf.getStringCollection(ALLOWED_OPERATIONS);<a name="line.193"></a>
-<span class="sourceLineNo">194</span> doFileRolls = operations.isEmpty() || operations.contains(AllowedOperations.all.name()) ||<a name="line.194"></a>
-<span class="sourceLineNo">195</span> operations.contains(AllowedOperations.fileroll.name());<a name="line.195"></a>
-<span class="sourceLineNo">196</span> initialized = true;<a name="line.196"></a>
-<span class="sourceLineNo">197</span> LOG.info("Initialized with file rolling " + (doFileRolls ? "enabled" : "disabled"));<a name="line.197"></a>
-<span class="sourceLineNo">198</span> }<a name="line.198"></a>
-<span class="sourceLineNo">199</span><a name="line.199"></a>
-<span class="sourceLineNo">200</span> private Writer noRollsWriter;<a name="line.200"></a>
-<span class="sourceLineNo">201</span><a name="line.201"></a>
-<span class="sourceLineNo">202</span> // creatWriterInstance is where the new pipeline is set up for doing file rolls<a name="line.202"></a>
-<span class="sourceLineNo">203</span> // if we are skipping it, just keep returning the same writer.<a name="line.203"></a>
-<span class="sourceLineNo">204</span> @Override<a name="line.204"></a>
-<span class="sourceLineNo">205</span> protected Writer createWriterInstance(final Path path) throws IOException {<a name="line.205"></a>
-<span class="sourceLineNo">206</span> // we get called from the FSHLog constructor (!); always roll in this case since<a name="line.206"></a>
-<span class="sourceLineNo">207</span> // we don't know yet if we're supposed to generally roll and<a name="line.207"></a>
-<span class="sourceLineNo">208</span> // we need an initial file in the case of doing appends but no rolls.<a name="line.208"></a>
-<span class="sourceLineNo">209</span> if (!initialized || doFileRolls) {<a name="line.209"></a>
-<span class="sourceLineNo">210</span> LOG.info("creating new writer instance.");<a name="line.210"></a>
-<span class="sourceLineNo">211</span> final ProtobufLogWriter writer = new IOTestWriter();<a name="line.211"></a>
-<span class="sourceLineNo">212</span> try {<a name="line.212"></a>
-<span class="sourceLineNo">213</span> writer.init(fs, path, conf, false);<a name="line.213"></a>
-<span class="sourceLineNo">214</span> } catch (CommonFSUtils.StreamLacksCapabilityException exception) {<a name="line.214"></a>
-<span class="sourceLineNo">215</span> throw new IOException("Can't create writer instance because underlying FileSystem " +<a name="line.215"></a>
-<span class="sourceLineNo">216</span> "doesn't support needed stream capabilities.", exception);<a name="line.216"></a>
-<span class="sourceLineNo">217</span> }<a name="line.217"></a>
-<span class="sourceLineNo">218</span> if (!initialized) {<a name="line.218"></a>
-<span class="sourceLineNo">219</span> LOG.info("storing initial writer instance in case file rolling isn't allowed.");<a name="line.219"></a>
-<span class="sourceLineNo">220</span> noRollsWriter = writer;<a name="line.220"></a>
-<span class="sourceLineNo">221</span> }<a name="line.221"></a>
-<span class="sourceLineNo">222</span> return writer;<a name="line.222"></a>
-<span class="sourceLineNo">223</span> } else {<a name="line.223"></a>
-<span class="sourceLineNo">224</span> LOG.info("WAL rolling disabled, returning the first writer.");<a name="line.224"></a>
-<span class="sourceLineNo">225</span> // Initial assignment happens during the constructor call, so there ought not be<a name="line.225"></a>
-<span class="sourceLineNo">226</span> // a race for first assignment.<a name="line.226"></a>
-<span class="sourceLineNo">227</span> return noRollsWriter;<a name="line.227"></a>
-<span class="sourceLineNo">228</span> }<a name="line.228"></a>
-<span class="sourceLineNo">229</span> }<a name="line.229"></a>
-<span class="sourceLineNo">230</span> }<a name="line.230"></a>
-<span class="sourceLineNo">231</span><a name="line.231"></a>
-<span class="sourceLineNo">232</span> /**<a name="line.232"></a>
-<span class="sourceLineNo">233</span> * Presumes init will be called by a single thread prior to any access of other methods.<a name="line.233"></a>
-<span class="sourceLineNo">234</span> */<a name="line.234"></a>
-<span class="sourceLineNo">235</span> private static class IOTestWriter extends ProtobufLogWriter {<a name="line.235"></a>
-<span class="sourceLineNo">236</span> private boolean doAppends;<a name="line.236"></a>
-<span class="sourceLineNo">237</span> private boolean doSyncs;<a name="line.237"></a>
-<span class="sourceLineNo">238</span><a name="line.238"></a>
-<span class="sourceLineNo">239</span> @Override<a name="line.239"></a>
-<span class="sourceLineNo">240</span> public void init(FileSystem fs, Path path, Configuration conf, boolean overwritable)<a name="line.240"></a>
-<span class="sourceLineNo">241</span> throws IOException, CommonFSUtils.StreamLacksCapabilityException {<a name="line.241"></a>
-<span class="sourceLineNo">242</span> Collection<String> operations = conf.getStringCollection(ALLOWED_OPERATIONS);<a name="line.242"></a>
-<span class="sourceLineNo">243</span> if (operations.isEmpty() || operations.contains(AllowedOperations.all.name())) {<a name="line.243"></a>
-<span class="sourceLineNo">244</span> doAppends = doSyncs = true;<a name="line.244"></a>
-<span class="sourceLineNo">245</span> } else if (operations.contains(AllowedOperations.none.name())) {<a name="line.245"></a>
-<span class="sourceLineNo">246</span> doAppends = doSyncs = false;<a name="line.246"></a>
-<span class="sourceLineNo">247</span> } else {<a name="line.247"></a>
-<span class="sourceLineNo">248</span> doAppends = operations.contains(AllowedOperations.append.name());<a name="line.248"></a>
-<span class="sourceLineNo">249</span> doSyncs = operations.contains(AllowedOperations.sync.name());<a name="line.249"></a>
-<span class="sourceLineNo">250</span> }<a name="line.250"></a>
-<span class="sourceLineNo">251</span> LOG.info("IOTestWriter initialized with appends " + (doAppends ? "enabled" : "disabled") +<a name="line.251"></a>
-<span class="sourceLineNo">252</span> " and syncs " + (doSyncs ? "enabled" : "disabled"));<a name="line.252"></a>
-<span class="sourceLineNo">253</span> super.init(fs, path, conf, overwritable);<a name="line.253"></a>
-<span class="sourceLineNo">254</span> }<a name="line.254"></a>
-<span class="sourceLineNo">255</span><a name="line.255"></a>
-<span class="sourceLineNo">256</span> @Override<a name="line.256"></a>
-<span class="sourceLineNo">257</span> protected String getWriterClassName() {<a name="line.257"></a>
-<span class="sourceLineNo">258</span> return ProtobufLogWriter.class.getSimpleName();<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 void append(Entry entry) throws IOException {<a name="line.262"></a>
-<span class="sourceLineNo">263</span> if (doAppends) {<a name="line.263"></a>
-<span class="sourceLineNo">264</span> super.append(entry);<a name="line.264"></a>
-<span class="sourceLineNo">265</span> }<a name="line.265"></a>
-<span class="sourceLineNo">266</span> }<a name="line.266"></a>
-<span class="sourceLineNo">267</span><a name="line.267"></a>
-<span class="sourceLineNo">268</span> @Override<a name="line.268"></a>
-<span class="sourceLineNo">269</span> public void sync(boolean forceSync) throws IOException {<a name="line.269"></a>
-<span class="sourceLineNo">270</span> if (doSyncs) {<a name="line.270"></a>
-<span class="sourceLineNo">271</span> super.sync(forceSync);<a name="line.271"></a>
-<span class="sourceLineNo">272</span> }<a name="line.272"></a>
-<span class="sourceLineNo">273</span> }<a name="line.273"></a>
-<span class="sourceLineNo">274</span> }<a name="line.274"></a>
-<span class="sourceLineNo">275</span><a name="line.275"></a>
-<span class="sourceLineNo">276</span> @Override<a name="line.276"></a>
-<span class="sourceLineNo">277</span> public long getNumLogFiles() {<a name="line.277"></a>
-<span class="sourceLineNo">278</span> return this.log.getNumLogFiles();<a name="line.278"></a>
-<span class="sourceLineNo">279</span> }<a name="line.279"></a>
-<span class="sourceLineNo">280</span><a name="line.280"></a>
-<span class="sourceLineNo">281</span> @Override<a name="line.281"></a>
-<span class="sourceLineNo">282</span> public long getLogFileSize() {<a name="line.282"></a>
-<span class="sourceLineNo">283</span> return this.log.getLogFileSize();<a name="line.283"></a>
-<span class="sourceLineNo">284</span> }<a name="line.284"></a>
-<span class="sourceLineNo">285</span><a name="line.285"></a>
-<span class="sourceLineNo">286</span> @Override<a name="line.286"></a>
-<span class="sourceLineNo">287</span> public void addWALActionsListener(WALActionsListener listener) {<a name="line.287"></a>
-<span class="sourceLineNo">288</span> // TODO Implement WALProvider.addWALActionLister<a name="line.288"></a>
-<span class="sourceLineNo">289</span><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">108</span> }<a name="line.108"></a>
+<span class="sourceLineNo">109</span><a name="line.109"></a>
+<span class="sourceLineNo">110</span> @Override<a name="line.110"></a>
+<span class="sourceLineNo">111</span> public List<WAL> getWALs() {<a name="line.111"></a>
+<span class="sourceLineNo">112</span> return Collections.singletonList(log);<a name="line.112"></a>
+<span class="sourceLineNo">113</span> }<a name="line.113"></a>
+<span class="sourceLineNo">114</span><a name="line.114"></a>
+<span class="sourceLineNo">115</span> private FSHLog createWAL() throws IOException {<a name="line.115"></a>
+<span class="sourceLineNo">116</span> String logPrefix = factory.factoryId + WAL_FILE_NAME_DELIMITER + providerId;<a name="line.116"></a>
+<span class="sourceLineNo">117</span> return new IOTestWAL(CommonFSUtils.getWALFileSystem(conf), CommonFSUtils.getWALRootDir(conf),<a name="line.117"></a>
+<span class="sourceLineNo">118</span> AbstractFSWALProvider.getWALDirectoryName(factory.factoryId),<a name="line.118"></a>
+<span class="sourceLineNo">119</span> HConstants.HREGION_OLDLOGDIR_NAME, conf, listeners, true, logPrefix,<a name="line.119"></a>
+<span class="sourceLineNo">120</span> META_WAL_PROVIDER_ID.equals(providerId) ? META_WAL_PROVIDER_ID : null);<a name="line.120"></a>
+<span class="sourceLineNo">121</span> }<a name="line.121"></a>
+<span class="sourceLineNo">122</span><a name="line.122"></a>
+<span class="sourceLineNo">123</span> @Override<a name="line.123"></a>
+<span class="sourceLineNo">124</span> public WAL getWAL(RegionInfo region) throws IOException {<a name="line.124"></a>
+<span class="sourceLineNo">125</span> FSHLog log = this.log;<a name="line.125"></a>
+<span class="sourceLineNo">126</span> if (log != null) {<a name="line.126"></a>
+<span class="sourceLineNo">127</span> return log;<a name="line.127"></a>
+<span class="sourceLineNo">128</span> }<a name="line.128"></a>
+<span class="sourceLineNo">129</span> synchronized (this) {<a name="line.129"></a>
+<span class="sourceLineNo">130</span> log = this.log;<a name="line.130"></a>
+<span class="sourceLineNo">131</span> if (log == null) {<a name="line.131"></a>
+<span class="sourceLineNo">132</span> log = createWAL();<a name="line.132"></a>
+<span class="sourceLineNo">133</span> this.log = log;<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> return log;<a name="line.136"></a>
+<span class="sourceLineNo">137</span> }<a name="line.137"></a>
+<span class="sourceLineNo">138</span><a name="line.138"></a>
+<span class="sourceLineNo">139</span> @Override<a name="line.139"></a>
+<span class="sourceLineNo">140</span> public void close() throws IOException {<a name="line.140"></a>
+<span class="sourceLineNo">141</span> FSHLog log = this.log;<a name="line.141"></a>
+<span class="sourceLineNo">142</span> if (log != null) {<a name="line.142"></a>
+<span class="sourceLineNo">143</span> log.close();<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> @Override<a name="line.147"></a>
+<span class="sourceLineNo">148</span> public void shutdown() throws IOException {<a name="line.148"></a>
+<span class="sourceLineNo">149</span> FSHLog log = this.log;<a name="line.149"></a>
+<span class="sourceLineNo">150</span> if (log != null) {<a name="line.150"></a>
+<span class="sourceLineNo">151</span> log.shutdown();<a name="line.151"></a>
+<span class="sourceLineNo">152</span> }<a name="line.152"></a>
+<span class="sourceLineNo">153</span> }<a name="line.153"></a>
+<span class="sourceLineNo">154</span><a name="line.154"></a>
+<span class="sourceLineNo">155</span> private static class IOTestWAL extends FSHLog {<a name="line.155"></a>
+<span class="sourceLineNo">156</span><a name="line.156"></a>
+<span class="sourceLineNo">157</span> private final boolean doFileRolls;<a name="line.157"></a>
+<span class="sourceLineNo">158</span><a name="line.158"></a>
+<span class="sourceLineNo">159</span> // Used to differntiate between roll calls before and after we finish construction.<a name="line.159"></a>
+<span class="sourceLineNo">160</span> private final boolean initialized;<a name="line.160"></a>
+<span class="sourceLineNo">161</span><a name="line.161"></a>
+<span class="sourceLineNo">162</span> /**<a name="line.162"></a>
+<span class="sourceLineNo">163</span> * Create an edit log at the given <code>dir</code> location.<a name="line.163"></a>
+<span class="sourceLineNo">164</span> *<a name="line.164"></a>
+<span class="sourceLineNo">165</span> * You should never have to load an existing log. If there is a log at<a name="line.165"></a>
+<span class="sourceLineNo">166</span> * startup, it should have already been processed and deleted by the time the<a name="line.166"></a>
+<span class="sourceLineNo">167</span> * WAL object is started up.<a name="line.167"></a>
+<span class="sourceLineNo">168</span> *<a name="line.168"></a>
+<span class="sourceLineNo">169</span> * @param fs filesystem handle<a name="line.169"></a>
+<span class="sourceLineNo">170</span> * @param rootDir path to where logs and oldlogs<a name="line.170"></a>
+<span class="sourceLineNo">171</span> * @param logDir dir where wals are stored<a name="line.171"></a>
+<span class="sourceLineNo">172</span> * @param archiveDir dir where wals are archived<a name="line.172"></a>
+<span class="sourceLineNo">173</span> * @param conf configuration to use<a name="line.173"></a>
+<span class="sourceLineNo">174</span> * @param listeners Listeners on WAL events. Listeners passed here will<a name="line.174"></a>
+<span class="sourceLineNo">175</span> * be registered before we do anything else; e.g. the<a name="line.175"></a>
+<span class="sourceLineNo">176</span> * Constructor {@link #rollWriter()}.<a name="line.176"></a>
+<span class="sourceLineNo">177</span> * @param failIfWALExists If true IOException will be thrown if files related to this wal<a name="line.177"></a>
+<span class="sourceLineNo">178</span> * already exist.<a name="line.178"></a>
+<span class="sourceLineNo">179</span> * @param prefix should always be hostname and port in distributed env and<a name="line.179"></a>
+<span class="sourceLineNo">180</span> * it will be URL encoded before being used.<a name="line.180"></a>
+<span class="sourceLineNo">181</span> * If prefix is null, "wal" will be used<a name="line.181"></a>
+<span class="sourceLineNo">182</span> * @param suffix will be url encoded. null is treated as empty. non-empty must start with<a name="line.182"></a>
+<span class="sourceLineNo">183</span> * {@link AbstractFSWALProvider#WAL_FILE_NAME_DELIMITER}<a name="line.183"></a>
+<span class="sourceLineNo">184</span> * @throws IOException<a name="line.184"></a>
+<span class="sourceLineNo">185</span> */<a name="line.185"></a>
+<span class="sourceLineNo">186</span> public IOTestWAL(final FileSystem fs, final Path rootDir, final String logDir,<a name="line.186"></a>
+<span class="sourceLineNo">187</span> final String archiveDir, final Configuration conf,<a name="line.187"></a>
+<span class="sourceLineNo">188</span> final List<WALActionsListener> listeners,<a name="line.188"></a>
+<span class="sourceLineNo">189</span> final boolean failIfWALExists, final String prefix, final String suffix)<a name="line.189"></a>
+<span class="sourceLineNo">190</span> throws IOException {<a name="line.190"></a>
+<span class="sourceLineNo">191</span> super(fs, rootDir, logDir, archiveDir, conf, listeners, failIfWALExists, prefix, suffix);<a name="line.191"></a>
+<span class="sourceLineNo">192</span> Collection<String> operations = conf.getStringCollection(ALLOWED_OPERATIONS);<a name="line.192"></a>
+<span class="sourceLineNo">193</span> doFileRolls = operations.isEmpty() || operations.contains(AllowedOperations.all.name()) ||<a name="line.193"></a>
+<span class="sourceLineNo">194</span> operations.contains(AllowedOperations.fileroll.name());<a name="line.194"></a>
+<span class="sourceLineNo">195</span> initialized = true;<a name="line.195"></a>
+<span class="sourceLineNo">196</span> LOG.info("Initialized with file rolling " + (doFileRolls ? "enabled" : "disabled"));<a name="line.196"></a>
+<span class="sourceLineNo">197</span> }<a name="line.197"></a>
+<span class="sourceLineNo">198</span><a name="line.198"></a>
+<span class="sourceLineNo">199</span> private Writer noRollsWriter;<a name="line.199"></a>
+<span class="sourceLineNo">200</span><a name="line.200"></a>
+<span class="sourceLineNo">201</span> // creatWriterInstance is where the new pipeline is set up for doing file rolls<a name="line.201"></a>
+<span class="sourceLineNo">202</span> // if we are skipping it, just keep returning the same writer.<a name="line.202"></a>
+<span class="sourceLineNo">203</span> @Override<a name="line.203"></a>
+<span class="sourceLineNo">204</span> protected Writer createWriterInstance(final Path path) throws IOException {<a name="line.204"></a>
+<span class="sourceLineNo">205</span> // we get called from the FSHLog constructor (!); always roll in this case since<a name="line.205"></a>
+<span class="sourceLineNo">206</span> // we don't know yet if we're supposed to generally roll and<a name="line.206"></a>
+<span class="sourceLineNo">207</span> // we need an initial file in the case of doing appends but no rolls.<a name="line.207"></a>
+<span class="sourceLineNo">208</span> if (!initialized || doFileRolls) {<a name="line.208"></a>
+<span class="sourceLineNo">209</span> LOG.info("creating new writer instance.");<a name="line.209"></a>
+<span class="sourceLineNo">210</span> final ProtobufLogWriter writer = new IOTestWriter();<a name="line.210"></a>
+<span class="sourceLineNo">211</span> try {<a name="line.211"></a>
+<span class="sourceLineNo">212</span> writer.init(fs, path, conf, false, this.blocksize);<a name="line.212"></a>
+<span class="sourceLineNo">213</span> } catch (CommonFSUtils.StreamLacksCapabilityException exception) {<a name="line.213"></a>
+<span class="sourceLineNo">214</span> throw new IOException("Can't create writer instance because underlying FileSystem " +<a name="line.214"></a>
+<span class="sourceLineNo">215</span> "doesn't support needed stream capabilities.", exception);<a name="line.215"></a>
+<span class="sourceLineNo">216</span> }<a name="line.216"></a>
+<span class="sourceLineNo">217</span> if (!initialized) {<a name="line.217"></a>
+<span class="sourceLineNo">218</span> LOG.info("storing initial writer instance in case file rolling isn't allowed.");<a name="line.218"></a>
+<span class="sourceLineNo">219</span> noRollsWriter = writer;<a name="line.219"></a>
+<span class="sourceLineNo">220</span> }<a name="line.220"></a>
+<span class="sourceLineNo">221</span> return writer;<a name="line.221"></a>
+<span class="sourceLineNo">222</span> } else {<a name="line.222"></a>
+<span class="sourceLineNo">223</span> LOG.info("WAL rolling disabled, returning the first writer.");<a name="line.223"></a>
+<span class="sourceLineNo">224</span> // Initial assignment happens during the constructor call, so there ought not be<a name="line.224"></a>
+<span class="sourceLineNo">225</span> // a race for first assignment.<a name="line.225"></a>
+<span class="sourceLineNo">226</span> return noRollsWriter;<a name="line.226"></a>
+<span class="sourceLineNo">227</span> }<a name="line.227"></a>
+<span class="sourceLineNo">228</span> }<a name="line.228"></a>
+<span class="sourceLineNo">229</span> }<a name="line.229"></a>
+<span class="sourceLineNo">230</span><a name="line.230"></a>
+<span class="sourceLineNo">231</span> /**<a name="line.231"></a>
+<span class="sourceLineNo">232</span> * Presumes init will be called by a single thread prior to any access of other methods.<a name="line.232"></a>
+<span class="sourceLineNo">233</span> */<a name="line.233"></a>
+<span class="sourceLineNo">234</span> private static class IOTestWriter extends ProtobufLogWriter {<a name="line.234"></a>
+<span class="sourceLineNo">235</span> private boolean doAppends;<a name="line.235"></a>
+<span class="sourceLineNo">236</span> private boolean doSyncs;<a name="line.236"></a>
+<span class="sourceLineNo">237</span><a name="line.237"></a>
+<span class="sourceLineNo">238</span> @Override<a name="line.238"></a>
+<span class="sourceLineNo">239</span> public void init(FileSystem fs, Path path, Configuration conf, boolean overwritable,<a name="line.239"></a>
+<span class="sourceLineNo">240</span> long blocksize) throws IOException, CommonFSUtils.StreamLacksCapabilityException {<a name="line.240"></a>
+<span class="sourceLineNo">241</span> Collection<String> operations = conf.getStringCollection(ALLOWED_OPERATIONS);<a name="line.241"></a>
+<span class="sourceLineNo">242</span> if (operations.isEmpty() || operations.contains(AllowedOperations.all.name())) {<a name="line.242"></a>
+<span class="sourceLineNo">243</span> doAppends = doSyncs = true;<a name="line.243"></a>
+<span class="sourceLineNo">244</span> } else if (operations.contains(AllowedOperations.none.name())) {<a name="line.244"></a>
+<span class="sourceLineNo">245</span> doAppends = doSyncs = false;<a name="line.245"></a>
+<span class="sourceLineNo">246</span> } else {<a name="line.246"></a>
+<span class="sourceLineNo">247</span> doAppends = operations.contains(AllowedOperations.append.name());<a name="line.247"></a>
+<span class="sourceLineNo">248</span> doSyncs = operations.contains(AllowedOperations.sync.name());<a name="line.248"></a>
+<span class="sourceLineNo">249</span> }<a name="line.249"></a>
+<span class="sourceLineNo">250</span> LOG.info("IOTestWriter initialized with appends " + (doAppends ? "enabled" : "disabled") +<a name="line.250"></a>
+<span class="sourceLineNo">251</span> " and syncs " + (doSyncs ? "enabled" : "disabled"));<a name="line.251"></a>
+<span class="sourceLineNo">252</span> super.init(fs, path, conf, overwritable, blocksize);<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> @Override<a name="line.255"></a>
+<span class="sourceLineNo">256</span> protected String getWriterClassName() {<a name="line.256"></a>
+<span class="sourceLineNo">257</span> return ProtobufLogWriter.class.getSimpleName();<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> @Override<a name="line.260"></a>
+<span class="sourceLineNo">261</span> public void append(Entry entry) throws IOException {<a name="line.261"></a>
+<span class="sourceLineNo">262</span> if (doAppends) {<a name="line.262"></a>
+<span class="sourceLineNo">263</span> super.append(entry);<a name="line.263"></a>
+<span class="sourceLineNo">264</span> }<a name="line.264"></a>
+<span class="sourceLineNo">265</span> }<a name="line.265"></a>
+<span class="sourceLineNo">266</span><a name="line.266"></a>
+<span class="sourceLineNo">267</span> @Override<a name="line.267"></a>
+<span class="sourceLineNo">268</span> public void sync(boolean forceSync) throws IOException {<a name="line.268"></a>
+<span class="sourceLineNo">269</span> if (doSyncs) {<a name="line.269"></a>
+<span class="sourceLineNo">270</span> super.sync(forceSync);<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> }<a name="line.273"></a>
+<span class="sourceLineNo">274</span><a name="line.274"></a>
+<span class="sourceLineNo">275</span> @Override<a name="line.275"></a>
+<span class="sourceLineNo">276</span> public long getNumLogFiles() {<a name="line.276"></a>
+<span class="sourceLineNo">277</span> return this.log.getNumLogFiles();<a name="line.277"></a>
+<span class="sourceLineNo">278</span> }<a name="line.278"></a>
+<span class="sourceLineNo">279</span><a name="line.279"></a>
+<span class="sourceLineNo">280</span> @Override<a name="line.280"></a>
+<span class="sourceLineNo">281</span> public long getLogFileSize() {<a name="line.281"></a>
+<span class="sourceLineNo">282</span> return this.log.getLogFileSize();<a name="line.282"></a>
+<span class="sourceLineNo">283</span> }<a name="line.283"></a>
+<span class="sourceLineNo">284</span><a name="line.284"></a>
+<span class="sourceLineNo">285</span> @Override<a name="line.285"></a>
+<span class="sourceLineNo">286</span> public void addWALActionsListener(WALActionsListener listener) {<a name="line.286"></a>
+<span class="sourceLineNo">287</span> // TODO Implement WALProvider.addWALActionLister<a name="line.287"></a>
+<span class="sourceLineNo">288</span><a name="line.288"></a>
+<span class="sourceLineNo">289</span> }<a name="line.289"></a>
+<span class="sourceLineNo">290</span>}<a name="line.290"></a>
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/ec5d5242/testdevapidocs/src-html/org/apache/hadoop/hbase/wal/IOTestProvider.IOTestWAL.html
----------------------------------------------------------------------
diff --git a/testdevapidocs/src-html/org/apache/hadoop/hbase/wal/IOTestProvider.IOTestWAL.html b/testdevapidocs/src-html/org/apache/hadoop/hbase/wal/IOTestProvider.IOTestWAL.html
index 47245bb..0e3d2ab 100644
--- a/testdevapidocs/src-html/org/apache/hadoop/hbase/wal/IOTestProvider.IOTestWAL.html
+++ b/testdevapidocs/src-html/org/apache/hadoop/hbase/wal/IOTestProvider.IOTestWAL.html
@@ -100,203 +100,202 @@
<span class="sourceLineNo">092</span> /**<a name="line.92"></a>
<span class="sourceLineNo">093</span> * @param factory factory that made us, identity used for FS layout. may not be null<a name="line.93"></a>
<span class="sourceLineNo">094</span> * @param conf may not be null<a name="line.94"></a>
-<span class="sourceLineNo">095</span> * @param listeners may be null<a name="line.95"></a>
-<span class="sourceLineNo">096</span> * @param providerId differentiate between providers from one facotry, used for FS layout. may be<a name="line.96"></a>
-<span class="sourceLineNo">097</span> * null<a name="line.97"></a>
-<span class="sourceLineNo">098</span> */<a name="line.98"></a>
-<span class="sourceLineNo">099</span> @Override<a name="line.99"></a>
-<span class="sourceLineNo">100</span> public void init(WALFactory factory, Configuration conf, String providerId) throws IOException {<a name="line.100"></a>
-<span class="sourceLineNo">101</span> if (factory != null) {<a name="line.101"></a>
-<span class="sourceLineNo">102</span> throw new IllegalStateException("WALProvider.init should only be called once.");<a name="line.102"></a>
-<span class="sourceLineNo">103</span> }<a name="line.103"></a>
-<span class="sourceLineNo">104</span> this.factory = factory;<a name="line.104"></a>
-<span class="sourceLineNo">105</span> this.conf = conf;<a name="line.105"></a>
-<span class="sourceLineNo">106</span> this.providerId = providerId != null ? providerId : DEFAULT_PROVIDER_ID;<a name="line.106"></a>
+<span class="sourceLineNo">095</span> * @param providerId differentiate between providers from one facotry, used for FS layout. may be<a name="line.95"></a>
+<span class="sourceLineNo">096</span> * null<a name="line.96"></a>
+<span class="sourceLineNo">097</span> */<a name="line.97"></a>
+<span class="sourceLineNo">098</span> @Override<a name="line.98"></a>
+<span class="sourceLineNo">099</span> public void init(WALFactory factory, Configuration conf, String providerId) throws IOException {<a name="line.99"></a>
+<span class="sourceLineNo">100</span> if (factory != null) {<a name="line.100"></a>
+<span class="sourceLineNo">101</span> throw new IllegalStateException("WALProvider.init should only be called once.");<a name="line.101"></a>
+<span class="sourceLineNo">102</span> }<a name="line.102"></a>
+<span class="sourceLineNo">103</span> this.factory = factory;<a name="line.103"></a>
+<span class="sourceLineNo">104</span> this.conf = conf;<a name="line.104"></a>
+<span class="sourceLineNo">105</span> this.providerId = providerId != null ? providerId : DEFAULT_PROVIDER_ID;<a name="line.105"></a>
+<span class="sourceLineNo">106</span><a name="line.106"></a>
<span class="sourceLineNo">107</span><a name="line.107"></a>
-<span class="sourceLineNo">108</span><a name="line.108"></a>
-<span class="sourceLineNo">109</span> }<a name="line.109"></a>
-<span class="sourceLineNo">110</span><a name="line.110"></a>
-<span class="sourceLineNo">111</span> @Override<a name="line.111"></a>
-<span class="sourceLineNo">112</span> public List<WAL> getWALs() {<a name="line.112"></a>
-<span class="sourceLineNo">113</span> return Collections.singletonList(log);<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> private FSHLog createWAL() throws IOException {<a name="line.116"></a>
-<span class="sourceLineNo">117</span> String logPrefix = factory.factoryId + WAL_FILE_NAME_DELIMITER + providerId;<a name="line.117"></a>
-<span class="sourceLineNo">118</span> return new IOTestWAL(CommonFSUtils.getWALFileSystem(conf), CommonFSUtils.getWALRootDir(conf),<a name="line.118"></a>
-<span class="sourceLineNo">119</span> AbstractFSWALProvider.getWALDirectoryName(factory.factoryId),<a name="line.119"></a>
-<span class="sourceLineNo">120</span> HConstants.HREGION_OLDLOGDIR_NAME, conf, listeners, true, logPrefix,<a name="line.120"></a>
-<span class="sourceLineNo">121</span> META_WAL_PROVIDER_ID.equals(providerId) ? META_WAL_PROVIDER_ID : null);<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> @Override<a name="line.124"></a>
-<span class="sourceLineNo">125</span> public WAL getWAL(RegionInfo region) throws IOException {<a name="line.125"></a>
-<span class="sourceLineNo">126</span> FSHLog log = this.log;<a name="line.126"></a>
-<span class="sourceLineNo">127</span> if (log != null) {<a name="line.127"></a>
-<span class="sourceLineNo">128</span> return log;<a name="line.128"></a>
-<span class="sourceLineNo">129</span> }<a name="line.129"></a>
-<span class="sourceLineNo">130</span> synchronized (this) {<a name="line.130"></a>
-<span class="sourceLineNo">131</span> log = this.log;<a name="line.131"></a>
-<span class="sourceLineNo">132</span> if (log == null) {<a name="line.132"></a>
-<span class="sourceLineNo">133</span> log = createWAL();<a name="line.133"></a>
-<span class="sourceLineNo">134</span> this.log = log;<a name="line.134"></a>
-<span class="sourceLineNo">135</span> }<a name="line.135"></a>
-<span class="sourceLineNo">136</span> }<a name="line.136"></a>
-<span class="sourceLineNo">137</span> return log;<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> @Override<a name="line.140"></a>
-<span class="sourceLineNo">141</span> public void close() throws IOException {<a name="line.141"></a>
-<span class="sourceLineNo">142</span> FSHLog log = this.log;<a name="line.142"></a>
-<span class="sourceLineNo">143</span> if (log != null) {<a name="line.143"></a>
-<span class="sourceLineNo">144</span> log.close();<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><a name="line.147"></a>
-<span class="sourceLineNo">148</span> @Override<a name="line.148"></a>
-<span class="sourceLineNo">149</span> public void shutdown() throws IOException {<a name="line.149"></a>
-<span class="sourceLineNo">150</span> FSHLog log = this.log;<a name="line.150"></a>
-<span class="sourceLineNo">151</span> if (log != null) {<a name="line.151"></a>
-<span class="sourceLineNo">152</span> log.shutdown();<a name="line.152"></a>
-<span class="sourceLineNo">153</span> }<a name="line.153"></a>
-<span class="sourceLineNo">154</span> }<a name="line.154"></a>
-<span class="sourceLineNo">155</span><a name="line.155"></a>
-<span class="sourceLineNo">156</span> private static class IOTestWAL extends FSHLog {<a name="line.156"></a>
-<span class="sourceLineNo">157</span><a name="line.157"></a>
-<span class="sourceLineNo">158</span> private final boolean doFileRolls;<a name="line.158"></a>
-<span class="sourceLineNo">159</span><a name="line.159"></a>
-<span class="sourceLineNo">160</span> // Used to differntiate between roll calls before and after we finish construction.<a name="line.160"></a>
-<span class="sourceLineNo">161</span> private final boolean initialized;<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> * Create an edit log at the given <code>dir</code> location.<a name="line.164"></a>
-<span class="sourceLineNo">165</span> *<a name="line.165"></a>
-<span class="sourceLineNo">166</span> * You should never have to load an existing log. If there is a log at<a name="line.166"></a>
-<span class="sourceLineNo">167</span> * startup, it should have already been processed and deleted by the time the<a name="line.167"></a>
-<span class="sourceLineNo">168</span> * WAL object is started up.<a name="line.168"></a>
-<span class="sourceLineNo">169</span> *<a name="line.169"></a>
-<span class="sourceLineNo">170</span> * @param fs filesystem handle<a name="line.170"></a>
-<span class="sourceLineNo">171</span> * @param rootDir path to where logs and oldlogs<a name="line.171"></a>
-<span class="sourceLineNo">172</span> * @param logDir dir where wals are stored<a name="line.172"></a>
-<span class="sourceLineNo">173</span> * @param archiveDir dir where wals are archived<a name="line.173"></a>
-<span class="sourceLineNo">174</span> * @param conf configuration to use<a name="line.174"></a>
-<span class="sourceLineNo">175</span> * @param listeners Listeners on WAL events. Listeners passed here will<a name="line.175"></a>
-<span class="sourceLineNo">176</span> * be registered before we do anything else; e.g. the<a name="line.176"></a>
-<span class="sourceLineNo">177</span> * Constructor {@link #rollWriter()}.<a name="line.177"></a>
-<span class="sourceLineNo">178</span> * @param failIfWALExists If true IOException will be thrown if files related to this wal<a name="line.178"></a>
-<span class="sourceLineNo">179</span> * already exist.<a name="line.179"></a>
-<span class="sourceLineNo">180</span> * @param prefix should always be hostname and port in distributed env and<a name="line.180"></a>
-<span class="sourceLineNo">181</span> * it will be URL encoded before being used.<a name="line.181"></a>
-<span class="sourceLineNo">182</span> * If prefix is null, "wal" will be used<a name="line.182"></a>
-<span class="sourceLineNo">183</span> * @param suffix will be url encoded. null is treated as empty. non-empty must start with<a name="line.183"></a>
-<span class="sourceLineNo">184</span> * {@link AbstractFSWALProvider#WAL_FILE_NAME_DELIMITER}<a name="line.184"></a>
-<span class="sourceLineNo">185</span> * @throws IOException<a name="line.185"></a>
-<span class="sourceLineNo">186</span> */<a name="line.186"></a>
-<span class="sourceLineNo">187</span> public IOTestWAL(final FileSystem fs, final Path rootDir, final String logDir,<a name="line.187"></a>
-<span class="sourceLineNo">188</span> final String archiveDir, final Configuration conf,<a name="line.188"></a>
-<span class="sourceLineNo">189</span> final List<WALActionsListener> listeners,<a name="line.189"></a>
-<span class="sourceLineNo">190</span> final boolean failIfWALExists, final String prefix, final String suffix)<a name="line.190"></a>
-<span class="sourceLineNo">191</span> throws IOException {<a name="line.191"></a>
-<span class="sourceLineNo">192</span> super(fs, rootDir, logDir, archiveDir, conf, listeners, failIfWALExists, prefix, suffix);<a name="line.192"></a>
-<span class="sourceLineNo">193</span> Collection<String> operations = conf.getStringCollection(ALLOWED_OPERATIONS);<a name="line.193"></a>
-<span class="sourceLineNo">194</span> doFileRolls = operations.isEmpty() || operations.contains(AllowedOperations.all.name()) ||<a name="line.194"></a>
-<span class="sourceLineNo">195</span> operations.contains(AllowedOperations.fileroll.name());<a name="line.195"></a>
-<span class="sourceLineNo">196</span> initialized = true;<a name="line.196"></a>
-<span class="sourceLineNo">197</span> LOG.info("Initialized with file rolling " + (doFileRolls ? "enabled" : "disabled"));<a name="line.197"></a>
-<span class="sourceLineNo">198</span> }<a name="line.198"></a>
-<span class="sourceLineNo">199</span><a name="line.199"></a>
-<span class="sourceLineNo">200</span> private Writer noRollsWriter;<a name="line.200"></a>
-<span class="sourceLineNo">201</span><a name="line.201"></a>
-<span class="sourceLineNo">202</span> // creatWriterInstance is where the new pipeline is set up for doing file rolls<a name="line.202"></a>
-<span class="sourceLineNo">203</span> // if we are skipping it, just keep returning the same writer.<a name="line.203"></a>
-<span class="sourceLineNo">204</span> @Override<a name="line.204"></a>
-<span class="sourceLineNo">205</span> protected Writer createWriterInstance(final Path path) throws IOException {<a name="line.205"></a>
-<span class="sourceLineNo">206</span> // we get called from the FSHLog constructor (!); always roll in this case since<a name="line.206"></a>
-<span class="sourceLineNo">207</span> // we don't know yet if we're supposed to generally roll and<a name="line.207"></a>
-<span class="sourceLineNo">208</span> // we need an initial file in the case of doing appends but no rolls.<a name="line.208"></a>
-<span class="sourceLineNo">209</span> if (!initialized || doFileRolls) {<a name="line.209"></a>
-<span class="sourceLineNo">210</span> LOG.info("creating new writer instance.");<a name="line.210"></a>
-<span class="sourceLineNo">211</span> final ProtobufLogWriter writer = new IOTestWriter();<a name="line.211"></a>
-<span class="sourceLineNo">212</span> try {<a name="line.212"></a>
-<span class="sourceLineNo">213</span> writer.init(fs, path, conf, false);<a name="line.213"></a>
-<span class="sourceLineNo">214</span> } catch (CommonFSUtils.StreamLacksCapabilityException exception) {<a name="line.214"></a>
-<span class="sourceLineNo">215</span> throw new IOException("Can't create writer instance because underlying FileSystem " +<a name="line.215"></a>
-<span class="sourceLineNo">216</span> "doesn't support needed stream capabilities.", exception);<a name="line.216"></a>
-<span class="sourceLineNo">217</span> }<a name="line.217"></a>
-<span class="sourceLineNo">218</span> if (!initialized) {<a name="line.218"></a>
-<span class="sourceLineNo">219</span> LOG.info("storing initial writer instance in case file rolling isn't allowed.");<a name="line.219"></a>
-<span class="sourceLineNo">220</span> noRollsWriter = writer;<a name="line.220"></a>
-<span class="sourceLineNo">221</span> }<a name="line.221"></a>
-<span class="sourceLineNo">222</span> return writer;<a name="line.222"></a>
-<span class="sourceLineNo">223</span> } else {<a name="line.223"></a>
-<span class="sourceLineNo">224</span> LOG.info("WAL rolling disabled, returning the first writer.");<a name="line.224"></a>
-<span class="sourceLineNo">225</span> // Initial assignment happens during the constructor call, so there ought not be<a name="line.225"></a>
-<span class="sourceLineNo">226</span> // a race for first assignment.<a name="line.226"></a>
-<span class="sourceLineNo">227</span> return noRollsWriter;<a name="line.227"></a>
-<span class="sourceLineNo">228</span> }<a name="line.228"></a>
-<span class="sourceLineNo">229</span> }<a name="line.229"></a>
-<span class="sourceLineNo">230</span> }<a name="line.230"></a>
-<span class="sourceLineNo">231</span><a name="line.231"></a>
-<span class="sourceLineNo">232</span> /**<a name="line.232"></a>
-<span class="sourceLineNo">233</span> * Presumes init will be called by a single thread prior to any access of other methods.<a name="line.233"></a>
-<span class="sourceLineNo">234</span> */<a name="line.234"></a>
-<span class="sourceLineNo">235</span> private static class IOTestWriter extends ProtobufLogWriter {<a name="line.235"></a>
-<span class="sourceLineNo">236</span> private boolean doAppends;<a name="line.236"></a>
-<span class="sourceLineNo">237</span> private boolean doSyncs;<a name="line.237"></a>
-<span class="sourceLineNo">238</span><a name="line.238"></a>
-<span class="sourceLineNo">239</span> @Override<a name="line.239"></a>
-<span class="sourceLineNo">240</span> public void init(FileSystem fs, Path path, Configuration conf, boolean overwritable)<a name="line.240"></a>
-<span class="sourceLineNo">241</span> throws IOException, CommonFSUtils.StreamLacksCapabilityException {<a name="line.241"></a>
-<span class="sourceLineNo">242</span> Collection<String> operations = conf.getStringCollection(ALLOWED_OPERATIONS);<a name="line.242"></a>
-<span class="sourceLineNo">243</span> if (operations.isEmpty() || operations.contains(AllowedOperations.all.name())) {<a name="line.243"></a>
-<span class="sourceLineNo">244</span> doAppends = doSyncs = true;<a name="line.244"></a>
-<span class="sourceLineNo">245</span> } else if (operations.contains(AllowedOperations.none.name())) {<a name="line.245"></a>
-<span class="sourceLineNo">246</span> doAppends = doSyncs = false;<a name="line.246"></a>
-<span class="sourceLineNo">247</span> } else {<a name="line.247"></a>
-<span class="sourceLineNo">248</span> doAppends = operations.contains(AllowedOperations.append.name());<a name="line.248"></a>
-<span class="sourceLineNo">249</span> doSyncs = operations.contains(AllowedOperations.sync.name());<a name="line.249"></a>
-<span class="sourceLineNo">250</span> }<a name="line.250"></a>
-<span class="sourceLineNo">251</span> LOG.info("IOTestWriter initialized with appends " + (doAppends ? "enabled" : "disabled") +<a name="line.251"></a>
-<span class="sourceLineNo">252</span> " and syncs " + (doSyncs ? "enabled" : "disabled"));<a name="line.252"></a>
-<span class="sourceLineNo">253</span> super.init(fs, path, conf, overwritable);<a name="line.253"></a>
-<span class="sourceLineNo">254</span> }<a name="line.254"></a>
-<span class="sourceLineNo">255</span><a name="line.255"></a>
-<span class="sourceLineNo">256</span> @Override<a name="line.256"></a>
-<span class="sourceLineNo">257</span> protected String getWriterClassName() {<a name="line.257"></a>
-<span class="sourceLineNo">258</span> return ProtobufLogWriter.class.getSimpleName();<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 void append(Entry entry) throws IOException {<a name="line.262"></a>
-<span class="sourceLineNo">263</span> if (doAppends) {<a name="line.263"></a>
-<span class="sourceLineNo">264</span> super.append(entry);<a name="line.264"></a>
-<span class="sourceLineNo">265</span> }<a name="line.265"></a>
-<span class="sourceLineNo">266</span> }<a name="line.266"></a>
-<span class="sourceLineNo">267</span><a name="line.267"></a>
-<span class="sourceLineNo">268</span> @Override<a name="line.268"></a>
-<span class="sourceLineNo">269</span> public void sync(boolean forceSync) throws IOException {<a name="line.269"></a>
-<span class="sourceLineNo">270</span> if (doSyncs) {<a name="line.270"></a>
-<span class="sourceLineNo">271</span> super.sync(forceSync);<a name="line.271"></a>
-<span class="sourceLineNo">272</span> }<a name="line.272"></a>
-<span class="sourceLineNo">273</span> }<a name="line.273"></a>
-<span class="sourceLineNo">274</span> }<a name="line.274"></a>
-<span class="sourceLineNo">275</span><a name="line.275"></a>
-<span class="sourceLineNo">276</span> @Override<a name="line.276"></a>
-<span class="sourceLineNo">277</span> public long getNumLogFiles() {<a name="line.277"></a>
-<span class="sourceLineNo">278</span> return this.log.getNumLogFiles();<a name="line.278"></a>
-<span class="sourceLineNo">279</span> }<a name="line.279"></a>
-<span class="sourceLineNo">280</span><a name="line.280"></a>
-<span class="sourceLineNo">281</span> @Override<a name="line.281"></a>
-<span class="sourceLineNo">282</span> public long getLogFileSize() {<a name="line.282"></a>
-<span class="sourceLineNo">283</span> return this.log.getLogFileSize();<a name="line.283"></a>
-<span class="sourceLineNo">284</span> }<a name="line.284"></a>
-<span class="sourceLineNo">285</span><a name="line.285"></a>
-<span class="sourceLineNo">286</span> @Override<a name="line.286"></a>
-<span class="sourceLineNo">287</span> public void addWALActionsListener(WALActionsListener listener) {<a name="line.287"></a>
-<span class="sourceLineNo">288</span> // TODO Implement WALProvider.addWALActionLister<a name="line.288"></a>
-<span class="sourceLineNo">289</span><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">108</span> }<a name="line.108"></a>
+<span class="sourceLineNo">109</span><a name="line.109"></a>
+<span class="sourceLineNo">110</span> @Override<a name="line.110"></a>
+<span class="sourceLineNo">111</span> public List<WAL> getWALs() {<a name="line.111"></a>
+<span class="sourceLineNo">112</span> return Collections.singletonList(log);<a name="line.112"></a>
+<span class="sourceLineNo">113</span> }<a name="line.113"></a>
+<span class="sourceLineNo">114</span><a name="line.114"></a>
+<span class="sourceLineNo">115</span> private FSHLog createWAL() throws IOException {<a name="line.115"></a>
+<span class="sourceLineNo">116</span> String logPrefix = factory.factoryId + WAL_FILE_NAME_DELIMITER + providerId;<a name="line.116"></a>
+<span class="sourceLineNo">117</span> return new IOTestWAL(CommonFSUtils.getWALFileSystem(conf), CommonFSUtils.getWALRootDir(conf),<a name="line.117"></a>
+<span class="sourceLineNo">118</span> AbstractFSWALProvider.getWALDirectoryName(factory.factoryId),<a name="line.118"></a>
+<span class="sourceLineNo">119</span> HConstants.HREGION_OLDLOGDIR_NAME, conf, listeners, true, logPrefix,<a name="line.119"></a>
+<span class="sourceLineNo">120</span> META_WAL_PROVIDER_ID.equals(providerId) ? META_WAL_PROVIDER_ID : null);<a name="line.120"></a>
+<span class="sourceLineNo">121</span> }<a name="line.121"></a>
+<span class="sourceLineNo">122</span><a name="line.122"></a>
+<span class="sourceLineNo">123</span> @Override<a name="line.123"></a>
+<span class="sourceLineNo">124</span> public WAL getWAL(RegionInfo region) throws IOException {<a name="line.124"></a>
+<span class="sourceLineNo">125</span> FSHLog log = this.log;<a name="line.125"></a>
+<span class="sourceLineNo">126</span> if (log != null) {<a name="line.126"></a>
+<span class="sourceLineNo">127</span> return log;<a name="line.127"></a>
+<span class="sourceLineNo">128</span> }<a name="line.128"></a>
+<span class="sourceLineNo">129</span> synchronized (this) {<a name="line.129"></a>
+<span class="sourceLineNo">130</span> log = this.log;<a name="line.130"></a>
+<span class="sourceLineNo">131</span> if (log == null) {<a name="line.131"></a>
+<span class="sourceLineNo">132</span> log = createWAL();<a name="line.132"></a>
+<span class="sourceLineNo">133</span> this.log = log;<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> return log;<a name="line.136"></a>
+<span class="sourceLineNo">137</span> }<a name="line.137"></a>
+<span class="sourceLineNo">138</span><a name="line.138"></a>
+<span class="sourceLineNo">139</span> @Override<a name="line.139"></a>
+<span class="sourceLineNo">140</span> public void close() throws IOException {<a name="line.140"></a>
+<span class="sourceLineNo">141</span> FSHLog log = this.log;<a name="line.141"></a>
+<span class="sourceLineNo">142</span> if (log != null) {<a name="line.142"></a>
+<span class="sourceLineNo">143</span> log.close();<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> @Override<a name="line.147"></a>
+<span class="sourceLineNo">148</span> public void shutdown() throws IOException {<a name="line.148"></a>
+<span class="sourceLineNo">149</span> FSHLog log = this.log;<a name="line.149"></a>
+<span class="sourceLineNo">150</span> if (log != null) {<a name="line.150"></a>
+<span class="sourceLineNo">151</span> log.shutdown();<a name="line.151"></a>
+<span class="sourceLineNo">152</span> }<a name="line.152"></a>
+<span class="sourceLineNo">153</span> }<a name="line.153"></a>
+<span class="sourceLineNo">154</span><a name="line.154"></a>
+<span class="sourceLineNo">155</span> private static class IOTestWAL extends FSHLog {<a name="line.155"></a>
+<span class="sourceLineNo">156</span><a name="line.156"></a>
+<span class="sourceLineNo">157</span> private final boolean doFileRolls;<a name="line.157"></a>
+<span class="sourceLineNo">158</span><a name="line.158"></a>
+<span class="sourceLineNo">159</span> // Used to differntiate between roll calls before and after we finish construction.<a name="line.159"></a>
+<span class="sourceLineNo">160</span> private final boolean initialized;<a name="line.160"></a>
+<span class="sourceLineNo">161</span><a name="line.161"></a>
+<span class="sourceLineNo">162</span> /**<a name="line.162"></a>
+<span class="sourceLineNo">163</span> * Create an edit log at the given <code>dir</code> location.<a name="line.163"></a>
+<span class="sourceLineNo">164</span> *<a name="line.164"></a>
+<span class="sourceLineNo">165</span> * You should never have to load an existing log. If there is a log at<a name="line.165"></a>
+<span class="sourceLineNo">166</span> * startup, it should have already been processed and deleted by the time the<a name="line.166"></a>
+<span class="sourceLineNo">167</span> * WAL object is started up.<a name="line.167"></a>
+<span class="sourceLineNo">168</span> *<a name="line.168"></a>
+<span class="sourceLineNo">169</span> * @param fs filesystem handle<a name="line.169"></a>
+<span class="sourceLineNo">170</span> * @param rootDir path to where logs and oldlogs<a name="line.170"></a>
+<span class="sourceLineNo">171</span> * @param logDir dir where wals are stored<a name="line.171"></a>
+<span class="sourceLineNo">172</span> * @param archiveDir dir where wals are archived<a name="line.172"></a>
+<span class="sourceLineNo">173</span> * @param conf configuration to use<a name="line.173"></a>
+<span class="sourceLineNo">174</span> * @param listeners Listeners on WAL events. Listeners passed here will<a name="line.174"></a>
+<span class="sourceLineNo">175</span> * be registered before we do anything else; e.g. the<a name="line.175"></a>
+<span class="sourceLineNo">176</span> * Constructor {@link #rollWriter()}.<a name="line.176"></a>
+<span class="sourceLineNo">177</span> * @param failIfWALExists If true IOException will be thrown if files related to this wal<a name="line.177"></a>
+<span class="sourceLineNo">178</span> * already exist.<a name="line.178"></a>
+<span class="sourceLineNo">179</span> * @param prefix should always be hostname and port in distributed env and<a name="line.179"></a>
+<span class="sourceLineNo">180</span> * it will be URL encoded before being used.<a name="line.180"></a>
+<span class="sourceLineNo">181</span> * If prefix is null, "wal" will be used<a name="line.181"></a>
+<span class="sourceLineNo">182</span> * @param suffix will be url encoded. null is treated as empty. non-empty must start with<a name="line.182"></a>
+<span class="sourceLineNo">183</span> * {@link AbstractFSWALProvider#WAL_FILE_NAME_DELIMITER}<a name="line.183"></a>
+<span class="sourceLineNo">184</span> * @throws IOException<a name="line.184"></a>
+<span class="sourceLineNo">185</span> */<a name="line.185"></a>
+<span class="sourceLineNo">186</span> public IOTestWAL(final FileSystem fs, final Path rootDir, final String logDir,<a name="line.186"></a>
+<span class="sourceLineNo">187</span> final String archiveDir, final Configuration conf,<a name="line.187"></a>
+<span class="sourceLineNo">188</span> final List<WALActionsListener> listeners,<a name="line.188"></a>
+<span class="sourceLineNo">189</span> final boolean failIfWALExists, final String prefix, final String suffix)<a name="line.189"></a>
+<span class="sourceLineNo">190</span> throws IOException {<a name="line.190"></a>
+<span class="sourceLineNo">191</span> super(fs, rootDir, logDir, archiveDir, conf, listeners, failIfWALExists, prefix, suffix);<a name="line.191"></a>
+<span class="sourceLineNo">192</span> Collection<String> operations = conf.getStringCollection(ALLOWED_OPERATIONS);<a name="line.192"></a>
+<span class="sourceLineNo">193</span> doFileRolls = operations.isEmpty() || operations.contains(AllowedOperations.all.name()) ||<a name="line.193"></a>
+<span class="sourceLineNo">194</span> operations.contains(AllowedOperations.fileroll.name());<a name="line.194"></a>
+<span class="sourceLineNo">195</span> initialized = true;<a name="line.195"></a>
+<span class="sourceLineNo">196</span> LOG.info("Initialized with file rolling " + (doFileRolls ? "enabled" : "disabled"));<a name="line.196"></a>
+<span class="sourceLineNo">197</span> }<a name="line.197"></a>
+<span class="sourceLineNo">198</span><a name="line.198"></a>
+<span class="sourceLineNo">199</span> private Writer noRollsWriter;<a name="line.199"></a>
+<span class="sourceLineNo">200</span><a name="line.200"></a>
+<span class="sourceLineNo">201</span> // creatWriterInstance is where the new pipeline is set up for doing file rolls<a name="line.201"></a>
+<span class="sourceLineNo">202</span> // if we are skipping it, just keep returning the same writer.<a name="line.202"></a>
+<span class="sourceLineNo">203</span> @Override<a name="line.203"></a>
+<span class="sourceLineNo">204</span> protected Writer createWriterInstance(final Path path) throws IOException {<a name="line.204"></a>
+<span class="sourceLineNo">205</span> // we get called from the FSHLog constructor (!); always roll in this case since<a name="line.205"></a>
+<span class="sourceLineNo">206</span> // we don't know yet if we're supposed to generally roll and<a name="line.206"></a>
+<span class="sourceLineNo">207</span> // we need an initial file in the case of doing appends but no rolls.<a name="line.207"></a>
+<span class="sourceLineNo">208</span> if (!initialized || doFileRolls) {<a name="line.208"></a>
+<span class="sourceLineNo">209</span> LOG.info("creating new writer instance.");<a name="line.209"></a>
+<span class="sourceLineNo">210</span> final ProtobufLogWriter writer = new IOTestWriter();<a name="line.210"></a>
+<span class="sourceLineNo">211</span> try {<a name="line.211"></a>
+<span class="sourceLineNo">212</span> writer.init(fs, path, conf, false, this.blocksize);<a name="line.212"></a>
+<span class="sourceLineNo">213</span> } catch (CommonFSUtils.StreamLacksCapabilityException exception) {<a name="line.213"></a>
+<span class="sourceLineNo">214</span> throw new IOException("Can't create writer instance because underlying FileSystem " +<a name="line.214"></a>
+<span class="sourceLineNo">215</span> "doesn't support needed stream capabilities.", exception);<a name="line.215"></a>
+<span class="sourceLineNo">216</span> }<a name="line.216"></a>
+<span class="sourceLineNo">217</span> if (!initialized) {<a name="line.217"></a>
+<span class="sourceLineNo">218</span> LOG.info("storing initial writer instance in case file rolling isn't allowed.");<a name="line.218"></a>
+<span class="sourceLineNo">219</span> noRollsWriter = writer;<a name="line.219"></a>
+<span class="sourceLineNo">220</span> }<a name="line.220"></a>
+<span class="sourceLineNo">221</span> return writer;<a name="line.221"></a>
+<span class="sourceLineNo">222</span> } else {<a name="line.222"></a>
+<span class="sourceLineNo">223</span> LOG.info("WAL rolling disabled, returning the first writer.");<a name="line.223"></a>
+<span class="sourceLineNo">224</span> // Initial assignment happens during the constructor call, so there ought not be<a name="line.224"></a>
+<span class="sourceLineNo">225</span> // a race for first assignment.<a name="line.225"></a>
+<span class="sourceLineNo">226</span> return noRollsWriter;<a name="line.226"></a>
+<span class="sourceLineNo">227</span> }<a name="line.227"></a>
+<span class="sourceLineNo">228</span> }<a name="line.228"></a>
+<span class="sourceLineNo">229</span> }<a name="line.229"></a>
+<span class="sourceLineNo">230</span><a name="line.230"></a>
+<span class="sourceLineNo">231</span> /**<a name="line.231"></a>
+<span class="sourceLineNo">232</span> * Presumes init will be called by a single thread prior to any access of other methods.<a name="line.232"></a>
+<span class="sourceLineNo">233</span> */<a name="line.233"></a>
+<span class="sourceLineNo">234</span> private static class IOTestWriter extends ProtobufLogWriter {<a name="line.234"></a>
+<span class="sourceLineNo">235</span> private boolean doAppends;<a name="line.235"></a>
+<span class="sourceLineNo">236</span> private boolean doSyncs;<a name="line.236"></a>
+<span class="sourceLineNo">237</span><a name="line.237"></a>
+<span class="sourceLineNo">238</span> @Override<a name="line.238"></a>
+<span class="sourceLineNo">239</span> public void init(FileSystem fs, Path path, Configuration conf, boolean overwritable,<a name="line.239"></a>
+<span class="sourceLineNo">240</span> long blocksize) throws IOException, CommonFSUtils.StreamLacksCapabilityException {<a name="line.240"></a>
+<span class="sourceLineNo">241</span> Collection<String> operations = conf.getStringCollection(ALLOWED_OPERATIONS);<a name="line.241"></a>
+<span class="sourceLineNo">242</span> if (operations.isEmpty() || operations.contains(AllowedOperations.all.name())) {<a name="line.242"></a>
+<span class="sourceLineNo">243</span> doAppends = doSyncs = true;<a name="line.243"></a>
+<span class="sourceLineNo">244</span> } else if (operations.contains(AllowedOperations.none.name())) {<a name="line.244"></a>
+<span class="sourceLineNo">245</span> doAppends = doSyncs = false;<a name="line.245"></a>
+<span class="sourceLineNo">246</span> } else {<a name="line.246"></a>
+<span class="sourceLineNo">247</span> doAppends = operations.contains(AllowedOperations.append.name());<a name="line.247"></a>
+<span class="sourceLineNo">248</span> doSyncs = operations.contains(AllowedOperations.sync.name());<a name="line.248"></a>
+<span class="sourceLineNo">249</span> }<a name="line.249"></a>
+<span class="sourceLineNo">250</span> LOG.info("IOTestWriter initialized with appends " + (doAppends ? "enabled" : "disabled") +<a name="line.250"></a>
+<span class="sourceLineNo">251</span> " and syncs " + (doSyncs ? "enabled" : "disabled"));<a name="line.251"></a>
+<span class="sourceLineNo">252</span> super.init(fs, path, conf, overwritable, blocksize);<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> @Override<a name="line.255"></a>
+<span class="sourceLineNo">256</span> protected String getWriterClassName() {<a name="line.256"></a>
+<span class="sourceLineNo">257</span> return ProtobufLogWriter.class.getSimpleName();<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> @Override<a name="line.260"></a>
+<span class="sourceLineNo">261</span> public void append(Entry entry) throws IOException {<a name="line.261"></a>
+<span class="sourceLineNo">262</span> if (doAppends) {<a name="line.262"></a>
+<span class="sourceLineNo">263</span> super.append(entry);<a name="line.263"></a>
+<span class="sourceLineNo">264</span> }<a name="line.264"></a>
+<span class="sourceLineNo">265</span> }<a name="line.265"></a>
+<span class="sourceLineNo">266</span><a name="line.266"></a>
+<span class="sourceLineNo">267</span> @Override<a name="line.267"></a>
+<span class="sourceLineNo">268</span> public void sync(boolean forceSync) throws IOException {<a name="line.268"></a>
+<span class="sourceLineNo">269</span> if (doSyncs) {<a name="line.269"></a>
+<span class="sourceLineNo">270</span> super.sync(forceSync);<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> }<a name="line.273"></a>
+<span class="sourceLineNo">274</span><a name="line.274"></a>
+<span class="sourceLineNo">275</span> @Override<a name="line.275"></a>
+<span class="sourceLineNo">276</span> public long getNumLogFiles() {<a name="line.276"></a>
+<span class="sourceLineNo">277</span> return this.log.getNumLogFiles();<a name="line.277"></a>
+<span class="sourceLineNo">278</span> }<a name="line.278"></a>
+<span class="sourceLineNo">279</span><a name="line.279"></a>
+<span class="sourceLineNo">280</span> @Override<a name="line.280"></a>
+<span class="sourceLineNo">281</span> public long getLogFileSize() {<a name="line.281"></a>
+<span class="sourceLineNo">282</span> return this.log.getLogFileSize();<a name="line.282"></a>
+<span class="sourceLineNo">283</span> }<a name="line.283"></a>
+<span class="sourceLineNo">284</span><a name="line.284"></a>
+<span class="sourceLineNo">285</span> @Override<a name="line.285"></a>
+<span class="sourceLineNo">286</span> public void addWALActionsListener(WALActionsListener listener) {<a name="line.286"></a>
+<span class="sourceLineNo">287</span> // TODO Implement WALProvider.addWALActionLister<a name="line.287"></a>
+<span class="sourceLineNo">288</span><a name="line.288"></a>
+<span class="sourceLineNo">289</span> }<a name="line.289"></a>
+<span class="sourceLineNo">290</span>}<a name="line.290"></a>