http://git-wip-us.apache.org/repos/asf/hbase-site/blob/539ad177/devapidocs/src-html/org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureStore.LeaseRecovery.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureStore.LeaseRecovery.html b/devapidocs/src-html/org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureStore.LeaseRecovery.html index 4a90c16..fc06682 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureStore.LeaseRecovery.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureStore.LeaseRecovery.html @@ -108,866 +108,870 @@ <span class="sourceLineNo">100</span><a name="line.100"></a> <span class="sourceLineNo">101</span> private final LinkedList<ProcedureWALFile> logs = new LinkedList<ProcedureWALFile>();<a name="line.101"></a> <span class="sourceLineNo">102</span> private final ProcedureStoreTracker storeTracker = new ProcedureStoreTracker();<a name="line.102"></a> -<span class="sourceLineNo">103</span> private final AtomicLong inactiveLogsMaxId = new AtomicLong(0);<a name="line.103"></a> -<span class="sourceLineNo">104</span> private final ReentrantLock lock = new ReentrantLock();<a name="line.104"></a> -<span class="sourceLineNo">105</span> private final Condition waitCond = lock.newCondition();<a name="line.105"></a> -<span class="sourceLineNo">106</span> private final Condition slotCond = lock.newCondition();<a name="line.106"></a> -<span class="sourceLineNo">107</span> private final Condition syncCond = lock.newCondition();<a name="line.107"></a> -<span class="sourceLineNo">108</span><a name="line.108"></a> -<span class="sourceLineNo">109</span> private final LeaseRecovery leaseRecovery;<a name="line.109"></a> -<span class="sourceLineNo">110</span> private final Configuration conf;<a name="line.110"></a> -<span class="sourceLineNo">111</span> private final FileSystem fs;<a name="line.111"></a> -<span class="sourceLineNo">112</span> private final Path logDir;<a name="line.112"></a> -<span class="sourceLineNo">113</span><a name="line.113"></a> -<span class="sourceLineNo">114</span> private final AtomicReference<Throwable> syncException = new AtomicReference<Throwable>();<a name="line.114"></a> -<span class="sourceLineNo">115</span> private final AtomicBoolean loading = new AtomicBoolean(true);<a name="line.115"></a> -<span class="sourceLineNo">116</span> private final AtomicBoolean inSync = new AtomicBoolean(false);<a name="line.116"></a> -<span class="sourceLineNo">117</span> private final AtomicLong totalSynced = new AtomicLong(0);<a name="line.117"></a> -<span class="sourceLineNo">118</span> private final AtomicLong lastRollTs = new AtomicLong(0);<a name="line.118"></a> -<span class="sourceLineNo">119</span><a name="line.119"></a> -<span class="sourceLineNo">120</span> private LinkedTransferQueue<ByteSlot> slotsCache = null;<a name="line.120"></a> -<span class="sourceLineNo">121</span> private Set<ProcedureWALFile> corruptedLogs = null;<a name="line.121"></a> -<span class="sourceLineNo">122</span> private FSDataOutputStream stream = null;<a name="line.122"></a> -<span class="sourceLineNo">123</span> private long flushLogId = 0;<a name="line.123"></a> -<span class="sourceLineNo">124</span> private int slotIndex = 0;<a name="line.124"></a> -<span class="sourceLineNo">125</span> private Thread syncThread;<a name="line.125"></a> -<span class="sourceLineNo">126</span> private ByteSlot[] slots;<a name="line.126"></a> -<span class="sourceLineNo">127</span><a name="line.127"></a> -<span class="sourceLineNo">128</span> private int maxRetriesBeforeRoll;<a name="line.128"></a> -<span class="sourceLineNo">129</span> private int maxSyncFailureRoll;<a name="line.129"></a> -<span class="sourceLineNo">130</span> private int waitBeforeRoll;<a name="line.130"></a> -<span class="sourceLineNo">131</span> private int rollRetries;<a name="line.131"></a> -<span class="sourceLineNo">132</span> private int periodicRollMsec;<a name="line.132"></a> -<span class="sourceLineNo">133</span> private long rollThreshold;<a name="line.133"></a> -<span class="sourceLineNo">134</span> private boolean useHsync;<a name="line.134"></a> -<span class="sourceLineNo">135</span> private int syncWaitMsec;<a name="line.135"></a> -<span class="sourceLineNo">136</span><a name="line.136"></a> -<span class="sourceLineNo">137</span> public WALProcedureStore(final Configuration conf, final FileSystem fs, final Path logDir,<a name="line.137"></a> -<span class="sourceLineNo">138</span> final LeaseRecovery leaseRecovery) {<a name="line.138"></a> -<span class="sourceLineNo">139</span> this.fs = fs;<a name="line.139"></a> -<span class="sourceLineNo">140</span> this.conf = conf;<a name="line.140"></a> -<span class="sourceLineNo">141</span> this.logDir = logDir;<a name="line.141"></a> -<span class="sourceLineNo">142</span> this.leaseRecovery = leaseRecovery;<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> @Override<a name="line.145"></a> -<span class="sourceLineNo">146</span> public void start(int numSlots) throws IOException {<a name="line.146"></a> -<span class="sourceLineNo">147</span> if (!setRunning(true)) {<a name="line.147"></a> -<span class="sourceLineNo">148</span> return;<a name="line.148"></a> -<span class="sourceLineNo">149</span> }<a name="line.149"></a> -<span class="sourceLineNo">150</span><a name="line.150"></a> -<span class="sourceLineNo">151</span> // Init buffer slots<a name="line.151"></a> -<span class="sourceLineNo">152</span> loading.set(true);<a name="line.152"></a> -<span class="sourceLineNo">153</span> slots = new ByteSlot[numSlots];<a name="line.153"></a> -<span class="sourceLineNo">154</span> slotsCache = new LinkedTransferQueue();<a name="line.154"></a> -<span class="sourceLineNo">155</span> while (slotsCache.size() < numSlots) {<a name="line.155"></a> -<span class="sourceLineNo">156</span> slotsCache.offer(new ByteSlot());<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> // Tunings<a name="line.159"></a> -<span class="sourceLineNo">160</span> maxRetriesBeforeRoll =<a name="line.160"></a> -<span class="sourceLineNo">161</span> conf.getInt(MAX_RETRIES_BEFORE_ROLL_CONF_KEY, DEFAULT_MAX_RETRIES_BEFORE_ROLL);<a name="line.161"></a> -<span class="sourceLineNo">162</span> maxSyncFailureRoll = conf.getInt(MAX_SYNC_FAILURE_ROLL_CONF_KEY, DEFAULT_MAX_SYNC_FAILURE_ROLL);<a name="line.162"></a> -<span class="sourceLineNo">163</span> waitBeforeRoll = conf.getInt(WAIT_BEFORE_ROLL_CONF_KEY, DEFAULT_WAIT_BEFORE_ROLL);<a name="line.163"></a> -<span class="sourceLineNo">164</span> rollRetries = conf.getInt(ROLL_RETRIES_CONF_KEY, DEFAULT_ROLL_RETRIES);<a name="line.164"></a> -<span class="sourceLineNo">165</span> rollThreshold = conf.getLong(ROLL_THRESHOLD_CONF_KEY, DEFAULT_ROLL_THRESHOLD);<a name="line.165"></a> -<span class="sourceLineNo">166</span> periodicRollMsec = conf.getInt(PERIODIC_ROLL_CONF_KEY, DEFAULT_PERIODIC_ROLL);<a name="line.166"></a> -<span class="sourceLineNo">167</span> syncWaitMsec = conf.getInt(SYNC_WAIT_MSEC_CONF_KEY, DEFAULT_SYNC_WAIT_MSEC);<a name="line.167"></a> -<span class="sourceLineNo">168</span> useHsync = conf.getBoolean(USE_HSYNC_CONF_KEY, DEFAULT_USE_HSYNC);<a name="line.168"></a> -<span class="sourceLineNo">169</span><a name="line.169"></a> -<span class="sourceLineNo">170</span> // Init sync thread<a name="line.170"></a> -<span class="sourceLineNo">171</span> syncThread = new Thread("WALProcedureStoreSyncThread") {<a name="line.171"></a> -<span class="sourceLineNo">172</span> @Override<a name="line.172"></a> -<span class="sourceLineNo">173</span> public void run() {<a name="line.173"></a> -<span class="sourceLineNo">174</span> try {<a name="line.174"></a> -<span class="sourceLineNo">175</span> syncLoop();<a name="line.175"></a> -<span class="sourceLineNo">176</span> } catch (Throwable e) {<a name="line.176"></a> -<span class="sourceLineNo">177</span> LOG.error("Got an exception from the sync-loop", e);<a name="line.177"></a> -<span class="sourceLineNo">178</span> if (!isSyncAborted()) {<a name="line.178"></a> -<span class="sourceLineNo">179</span> sendAbortProcessSignal();<a name="line.179"></a> -<span class="sourceLineNo">180</span> }<a name="line.180"></a> -<span class="sourceLineNo">181</span> }<a name="line.181"></a> -<span class="sourceLineNo">182</span> }<a name="line.182"></a> -<span class="sourceLineNo">183</span> };<a name="line.183"></a> -<span class="sourceLineNo">184</span> syncThread.start();<a name="line.184"></a> -<span class="sourceLineNo">185</span> }<a name="line.185"></a> -<span class="sourceLineNo">186</span><a name="line.186"></a> -<span class="sourceLineNo">187</span> @Override<a name="line.187"></a> -<span class="sourceLineNo">188</span> public void stop(boolean abort) {<a name="line.188"></a> -<span class="sourceLineNo">189</span> if (!setRunning(false)) {<a name="line.189"></a> -<span class="sourceLineNo">190</span> return;<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> LOG.info("Stopping the WAL Procedure Store");<a name="line.193"></a> -<span class="sourceLineNo">194</span> if (lock.tryLock()) {<a name="line.194"></a> -<span class="sourceLineNo">195</span> try {<a name="line.195"></a> -<span class="sourceLineNo">196</span> waitCond.signalAll();<a name="line.196"></a> -<span class="sourceLineNo">197</span> syncCond.signalAll();<a name="line.197"></a> -<span class="sourceLineNo">198</span> } finally {<a 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class="sourceLineNo">212</span> closeStream();<a name="line.212"></a> -<span class="sourceLineNo">213</span><a name="line.213"></a> -<span class="sourceLineNo">214</span> // Close the old logs<a name="line.214"></a> -<span class="sourceLineNo">215</span> // they should be already closed, this is just in case the load fails<a name="line.215"></a> -<span class="sourceLineNo">216</span> // and we call start() and then stop()<a name="line.216"></a> -<span class="sourceLineNo">217</span> for (ProcedureWALFile log: logs) {<a name="line.217"></a> -<span class="sourceLineNo">218</span> log.close();<a name="line.218"></a> -<span class="sourceLineNo">219</span> }<a name="line.219"></a> -<span class="sourceLineNo">220</span> logs.clear();<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> @Override<a name="line.223"></a> -<span class="sourceLineNo">224</span> public int getNumThreads() {<a name="line.224"></a> -<span class="sourceLineNo">225</span> return slots == null ? 0 : slots.length;<a name="line.225"></a> -<span class="sourceLineNo">226</span> }<a name="line.226"></a> -<span class="sourceLineNo">227</span><a name="line.227"></a> -<span class="sourceLineNo">228</span> public ProcedureStoreTracker getStoreTracker() {<a name="line.228"></a> -<span class="sourceLineNo">229</span> return storeTracker;<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> public LinkedList<ProcedureWALFile> getActiveLogs() {<a name="line.232"></a> -<span class="sourceLineNo">233</span> return logs;<a name="line.233"></a> -<span class="sourceLineNo">234</span> }<a name="line.234"></a> -<span class="sourceLineNo">235</span><a name="line.235"></a> -<span class="sourceLineNo">236</span> public Set<ProcedureWALFile> getCorruptedLogs() {<a name="line.236"></a> -<span class="sourceLineNo">237</span> return corruptedLogs;<a name="line.237"></a> -<span class="sourceLineNo">238</span> }<a name="line.238"></a> -<span class="sourceLineNo">239</span><a name="line.239"></a> -<span class="sourceLineNo">240</span> @Override<a name="line.240"></a> -<span class="sourceLineNo">241</span> public void recoverLease() throws IOException {<a name="line.241"></a> -<span class="sourceLineNo">242</span> LOG.info("Starting WAL Procedure Store lease recovery");<a name="line.242"></a> -<span class="sourceLineNo">243</span> FileStatus[] oldLogs = getLogFiles();<a name="line.243"></a> -<span class="sourceLineNo">244</span> while (isRunning()) {<a name="line.244"></a> -<span class="sourceLineNo">245</span> // Get Log-MaxID and recover lease on old logs<a name="line.245"></a> -<span class="sourceLineNo">246</span> flushLogId = initOldLogs(oldLogs);<a name="line.246"></a> -<span class="sourceLineNo">247</span><a name="line.247"></a> -<span class="sourceLineNo">248</span> // Create new state-log<a name="line.248"></a> -<span class="sourceLineNo">249</span> if (!rollWriter(flushLogId + 1)) {<a name="line.249"></a> -<span class="sourceLineNo">250</span> // someone else has already created this log<a name="line.250"></a> -<span class="sourceLineNo">251</span> LOG.debug("someone else has already created log " + flushLogId);<a name="line.251"></a> -<span class="sourceLineNo">252</span> continue;<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> // We have the lease on the log<a name="line.255"></a> -<span class="sourceLineNo">256</span> oldLogs = getLogFiles();<a name="line.256"></a> -<span class="sourceLineNo">257</span> if (getMaxLogId(oldLogs) > flushLogId) {<a name="line.257"></a> -<span class="sourceLineNo">258</span> if (LOG.isDebugEnabled()) {<a name="line.258"></a> -<span class="sourceLineNo">259</span> LOG.debug("Someone else created new logs. Expected maxLogId < " + flushLogId);<a name="line.259"></a> -<span class="sourceLineNo">260</span> }<a name="line.260"></a> -<span class="sourceLineNo">261</span> logs.getLast().removeFile();<a name="line.261"></a> -<span class="sourceLineNo">262</span> continue;<a name="line.262"></a> -<span class="sourceLineNo">263</span> }<a name="line.263"></a> -<span class="sourceLineNo">264</span><a name="line.264"></a> -<span class="sourceLineNo">265</span> LOG.info("Lease acquired for flushLogId: " + flushLogId);<a name="line.265"></a> -<span class="sourceLineNo">266</span> break;<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><a name="line.269"></a> -<span class="sourceLineNo">270</span> @Override<a name="line.270"></a> -<span class="sourceLineNo">271</span> public void load(final ProcedureLoader loader) throws IOException {<a name="line.271"></a> -<span 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}<a name="line.305"></a> -<span class="sourceLineNo">306</span><a name="line.306"></a> -<span class="sourceLineNo">307</span> @Override<a name="line.307"></a> -<span class="sourceLineNo">308</span> public void removeLog(ProcedureWALFile log) {<a name="line.308"></a> -<span class="sourceLineNo">309</span> toRemove.add(log);<a name="line.309"></a> -<span class="sourceLineNo">310</span> }<a name="line.310"></a> -<span class="sourceLineNo">311</span><a name="line.311"></a> -<span class="sourceLineNo">312</span> @Override<a name="line.312"></a> -<span class="sourceLineNo">313</span> public void markCorruptedWAL(ProcedureWALFile log, IOException e) {<a name="line.313"></a> -<span class="sourceLineNo">314</span> if (corruptedLogs == null) {<a name="line.314"></a> -<span class="sourceLineNo">315</span> corruptedLogs = new HashSet<ProcedureWALFile>();<a name="line.315"></a> -<span class="sourceLineNo">316</span> }<a name="line.316"></a> -<span class="sourceLineNo">317</span> corruptedLogs.add(log);<a name="line.317"></a> -<span class="sourceLineNo">318</span> // TODO: sideline corrupted log<a name="line.318"></a> -<span class="sourceLineNo">319</span> }<a name="line.319"></a> -<span class="sourceLineNo">320</span> });<a name="line.320"></a> -<span class="sourceLineNo">321</span> } finally {<a name="line.321"></a> -<span class="sourceLineNo">322</span> if (!toRemove.isEmpty()) {<a name="line.322"></a> -<span class="sourceLineNo">323</span> for (ProcedureWALFile log: toRemove) {<a name="line.323"></a> -<span class="sourceLineNo">324</span> removeLogFile(log);<a name="line.324"></a> -<span class="sourceLineNo">325</span> }<a name="line.325"></a> -<span class="sourceLineNo">326</span> }<a name="line.326"></a> -<span class="sourceLineNo">327</span> loading.set(false);<a name="line.327"></a> -<span class="sourceLineNo">328</span> }<a name="line.328"></a> -<span class="sourceLineNo">329</span> }<a name="line.329"></a> -<span class="sourceLineNo">330</span><a 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name="line.352"></a> -<span class="sourceLineNo">353</span> LOG.fatal("Unable to serialize one of the procedure: proc=" + proc +<a name="line.353"></a> -<span class="sourceLineNo">354</span> ", subprocs=" + Arrays.toString(subprocs), e);<a name="line.354"></a> -<span class="sourceLineNo">355</span> throw new RuntimeException(e);<a name="line.355"></a> -<span class="sourceLineNo">356</span> } finally {<a name="line.356"></a> -<span class="sourceLineNo">357</span> releaseSlot(slot);<a name="line.357"></a> -<span class="sourceLineNo">358</span> }<a name="line.358"></a> -<span class="sourceLineNo">359</span><a name="line.359"></a> -<span class="sourceLineNo">360</span> // Update the store tracker<a name="line.360"></a> -<span class="sourceLineNo">361</span> synchronized (storeTracker) {<a name="line.361"></a> -<span class="sourceLineNo">362</span> storeTracker.insert(proc, subprocs);<a name="line.362"></a> -<span class="sourceLineNo">363</span> if (logId == flushLogId) {<a name="line.363"></a> -<span class="sourceLineNo">364</span> checkAndTryRoll();<a name="line.364"></a> -<span class="sourceLineNo">365</span> }<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> @Override<a name="line.369"></a> -<span class="sourceLineNo">370</span> public void update(final Procedure proc) {<a name="line.370"></a> -<span class="sourceLineNo">371</span> if (LOG.isTraceEnabled()) {<a name="line.371"></a> -<span class="sourceLineNo">372</span> LOG.trace("Update " + proc);<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> ByteSlot slot = acquireSlot();<a name="line.375"></a> -<span class="sourceLineNo">376</span> long logId = -1;<a name="line.376"></a> -<span class="sourceLineNo">377</span> try {<a name="line.377"></a> -<span class="sourceLineNo">378</span> // Serialize the update<a name="line.378"></a> -<span class="sourceLineNo">379</span> ProcedureWALFormat.writeUpdate(slot, proc);<a name="line.379"></a> -<span class="sourceLineNo">380</span><a name="line.380"></a> -<span class="sourceLineNo">381</span> // Push the transaction data and wait until it is persisted<a name="line.381"></a> -<span class="sourceLineNo">382</span> logId = pushData(slot);<a name="line.382"></a> -<span class="sourceLineNo">383</span> } catch (IOException e) {<a name="line.383"></a> -<span class="sourceLineNo">384</span> // We are not able to serialize the procedure.<a name="line.384"></a> -<span class="sourceLineNo">385</span> // this is a code error, and we are not able to go on.<a name="line.385"></a> -<span class="sourceLineNo">386</span> LOG.fatal("Unable to serialize the procedure: " + proc, e);<a name="line.386"></a> -<span class="sourceLineNo">387</span> throw new RuntimeException(e);<a name="line.387"></a> -<span class="sourceLineNo">388</span> } finally {<a name="line.388"></a> -<span class="sourceLineNo">389</span> releaseSlot(slot);<a name="line.389"></a> -<span class="sourceLineNo">390</span> }<a name="line.390"></a> -<span class="sourceLineNo">391</span><a name="line.391"></a> -<span class="sourceLineNo">392</span> // Update the store tracker<a name="line.392"></a> -<span class="sourceLineNo">393</span> boolean removeOldLogs = false;<a name="line.393"></a> -<span class="sourceLineNo">394</span> synchronized (storeTracker) {<a name="line.394"></a> -<span class="sourceLineNo">395</span> storeTracker.update(proc);<a name="line.395"></a> -<span class="sourceLineNo">396</span> if (logId == flushLogId) {<a name="line.396"></a> -<span class="sourceLineNo">397</span> removeOldLogs = storeTracker.isUpdated();<a name="line.397"></a> -<span class="sourceLineNo">398</span> checkAndTryRoll();<a name="line.398"></a> -<span class="sourceLineNo">399</span> }<a name="line.399"></a> -<span class="sourceLineNo">400</span> }<a name="line.400"></a> -<span class="sourceLineNo">401</span><a name="line.401"></a> -<span class="sourceLineNo">402</span> if (removeOldLogs) {<a name="line.402"></a> -<span class="sourceLineNo">403</span> setInactiveLogsMaxId(logId - 1);<a name="line.403"></a> +<span class="sourceLineNo">103</span> private final ReentrantLock lock = new ReentrantLock();<a name="line.103"></a> +<span class="sourceLineNo">104</span> private final Condition waitCond = lock.newCondition();<a name="line.104"></a> +<span class="sourceLineNo">105</span> private final Condition slotCond = lock.newCondition();<a name="line.105"></a> +<span class="sourceLineNo">106</span> private final Condition syncCond = lock.newCondition();<a name="line.106"></a> +<span class="sourceLineNo">107</span><a name="line.107"></a> +<span class="sourceLineNo">108</span> private final LeaseRecovery leaseRecovery;<a name="line.108"></a> +<span class="sourceLineNo">109</span> private final Configuration conf;<a name="line.109"></a> +<span class="sourceLineNo">110</span> private final FileSystem fs;<a name="line.110"></a> +<span class="sourceLineNo">111</span> private final Path logDir;<a name="line.111"></a> +<span class="sourceLineNo">112</span><a name="line.112"></a> +<span class="sourceLineNo">113</span> private final AtomicReference<Throwable> syncException = new AtomicReference<Throwable>();<a name="line.113"></a> +<span class="sourceLineNo">114</span> private final AtomicBoolean loading = new AtomicBoolean(true);<a name="line.114"></a> +<span class="sourceLineNo">115</span> private final AtomicBoolean inSync = new AtomicBoolean(false);<a name="line.115"></a> +<span class="sourceLineNo">116</span> private final AtomicLong totalSynced = new AtomicLong(0);<a name="line.116"></a> +<span class="sourceLineNo">117</span> private final AtomicLong lastRollTs = new AtomicLong(0);<a name="line.117"></a> +<span class="sourceLineNo">118</span><a name="line.118"></a> +<span class="sourceLineNo">119</span> private LinkedTransferQueue<ByteSlot> slotsCache = null;<a name="line.119"></a> +<span class="sourceLineNo">120</span> private Set<ProcedureWALFile> corruptedLogs = null;<a name="line.120"></a> +<span class="sourceLineNo">121</span> private FSDataOutputStream stream = null;<a name="line.121"></a> +<span class="sourceLineNo">122</span> private long flushLogId = 0;<a name="line.122"></a> +<span class="sourceLineNo">123</span> private int slotIndex = 0;<a name="line.123"></a> +<span class="sourceLineNo">124</span> private Thread syncThread;<a name="line.124"></a> +<span class="sourceLineNo">125</span> private ByteSlot[] slots;<a name="line.125"></a> +<span class="sourceLineNo">126</span><a name="line.126"></a> +<span class="sourceLineNo">127</span> private int maxRetriesBeforeRoll;<a name="line.127"></a> +<span class="sourceLineNo">128</span> private int maxSyncFailureRoll;<a name="line.128"></a> +<span class="sourceLineNo">129</span> private int waitBeforeRoll;<a name="line.129"></a> +<span class="sourceLineNo">130</span> private int rollRetries;<a name="line.130"></a> +<span class="sourceLineNo">131</span> private int periodicRollMsec;<a name="line.131"></a> +<span class="sourceLineNo">132</span> private long rollThreshold;<a name="line.132"></a> +<span class="sourceLineNo">133</span> private boolean useHsync;<a name="line.133"></a> +<span class="sourceLineNo">134</span> private int syncWaitMsec;<a name="line.134"></a> +<span class="sourceLineNo">135</span><a name="line.135"></a> +<span class="sourceLineNo">136</span> public WALProcedureStore(final Configuration conf, final FileSystem fs, final Path logDir,<a name="line.136"></a> +<span class="sourceLineNo">137</span> final LeaseRecovery leaseRecovery) {<a name="line.137"></a> +<span class="sourceLineNo">138</span> this.fs = fs;<a name="line.138"></a> +<span class="sourceLineNo">139</span> this.conf = conf;<a name="line.139"></a> +<span class="sourceLineNo">140</span> this.logDir = logDir;<a name="line.140"></a> +<span class="sourceLineNo">141</span> this.leaseRecovery = leaseRecovery;<a name="line.141"></a> +<span class="sourceLineNo">142</span> }<a name="line.142"></a> +<span class="sourceLineNo">143</span><a name="line.143"></a> +<span class="sourceLineNo">144</span> @Override<a name="line.144"></a> +<span class="sourceLineNo">145</span> public void start(int numSlots) throws IOException {<a name="line.145"></a> +<span class="sourceLineNo">146</span> if (!setRunning(true)) {<a name="line.146"></a> +<span class="sourceLineNo">147</span> return;<a name="line.147"></a> +<span class="sourceLineNo">148</span> }<a name="line.148"></a> +<span class="sourceLineNo">149</span><a name="line.149"></a> +<span class="sourceLineNo">150</span> // Init buffer slots<a name="line.150"></a> +<span class="sourceLineNo">151</span> loading.set(true);<a name="line.151"></a> +<span class="sourceLineNo">152</span> slots = new ByteSlot[numSlots];<a name="line.152"></a> +<span class="sourceLineNo">153</span> slotsCache = new LinkedTransferQueue();<a name="line.153"></a> +<span class="sourceLineNo">154</span> while (slotsCache.size() < numSlots) {<a name="line.154"></a> +<span class="sourceLineNo">155</span> slotsCache.offer(new ByteSlot());<a name="line.155"></a> +<span class="sourceLineNo">156</span> }<a name="line.156"></a> +<span class="sourceLineNo">157</span><a name="line.157"></a> +<span class="sourceLineNo">158</span> // Tunings<a name="line.158"></a> +<span class="sourceLineNo">159</span> maxRetriesBeforeRoll =<a name="line.159"></a> +<span class="sourceLineNo">160</span> conf.getInt(MAX_RETRIES_BEFORE_ROLL_CONF_KEY, DEFAULT_MAX_RETRIES_BEFORE_ROLL);<a name="line.160"></a> +<span class="sourceLineNo">161</span> maxSyncFailureRoll = conf.getInt(MAX_SYNC_FAILURE_ROLL_CONF_KEY, DEFAULT_MAX_SYNC_FAILURE_ROLL);<a name="line.161"></a> +<span class="sourceLineNo">162</span> waitBeforeRoll = conf.getInt(WAIT_BEFORE_ROLL_CONF_KEY, DEFAULT_WAIT_BEFORE_ROLL);<a name="line.162"></a> +<span class="sourceLineNo">163</span> rollRetries = conf.getInt(ROLL_RETRIES_CONF_KEY, DEFAULT_ROLL_RETRIES);<a name="line.163"></a> +<span class="sourceLineNo">164</span> rollThreshold = conf.getLong(ROLL_THRESHOLD_CONF_KEY, DEFAULT_ROLL_THRESHOLD);<a name="line.164"></a> +<span class="sourceLineNo">165</span> periodicRollMsec = conf.getInt(PERIODIC_ROLL_CONF_KEY, DEFAULT_PERIODIC_ROLL);<a name="line.165"></a> +<span class="sourceLineNo">166</span> syncWaitMsec = conf.getInt(SYNC_WAIT_MSEC_CONF_KEY, DEFAULT_SYNC_WAIT_MSEC);<a name="line.166"></a> +<span class="sourceLineNo">167</span> useHsync = conf.getBoolean(USE_HSYNC_CONF_KEY, DEFAULT_USE_HSYNC);<a name="line.167"></a> +<span class="sourceLineNo">168</span><a name="line.168"></a> +<span class="sourceLineNo">169</span> // Init sync thread<a name="line.169"></a> +<span class="sourceLineNo">170</span> syncThread = new Thread("WALProcedureStoreSyncThread") {<a name="line.170"></a> +<span class="sourceLineNo">171</span> @Override<a name="line.171"></a> +<span class="sourceLineNo">172</span> public void run() {<a name="line.172"></a> +<span class="sourceLineNo">173</span> try {<a name="line.173"></a> +<span class="sourceLineNo">174</span> syncLoop();<a name="line.174"></a> +<span class="sourceLineNo">175</span> } catch (Throwable e) {<a name="line.175"></a> +<span class="sourceLineNo">176</span> LOG.error("Got an exception from the sync-loop", e);<a name="line.176"></a> +<span class="sourceLineNo">177</span> if (!isSyncAborted()) {<a name="line.177"></a> +<span class="sourceLineNo">178</span> sendAbortProcessSignal();<a name="line.178"></a> +<span class="sourceLineNo">179</span> }<a name="line.179"></a> +<span class="sourceLineNo">180</span> }<a name="line.180"></a> +<span class="sourceLineNo">181</span> }<a name="line.181"></a> +<span class="sourceLineNo">182</span> };<a name="line.182"></a> +<span class="sourceLineNo">183</span> syncThread.start();<a name="line.183"></a> +<span class="sourceLineNo">184</span> }<a name="line.184"></a> +<span class="sourceLineNo">185</span><a name="line.185"></a> +<span class="sourceLineNo">186</span> @Override<a name="line.186"></a> +<span class="sourceLineNo">187</span> public void stop(boolean abort) {<a name="line.187"></a> +<span class="sourceLineNo">188</span> if (!setRunning(false)) {<a name="line.188"></a> +<span class="sourceLineNo">189</span> return;<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> LOG.info("Stopping the WAL Procedure Store");<a name="line.192"></a> +<span class="sourceLineNo">193</span> sendStopSignal();<a name="line.193"></a> +<span class="sourceLineNo">194</span><a name="line.194"></a> +<span class="sourceLineNo">195</span> if (!abort) {<a name="line.195"></a> +<span class="sourceLineNo">196</span> try {<a name="line.196"></a> +<span class="sourceLineNo">197</span> while (syncThread.isAlive()) {<a name="line.197"></a> +<span class="sourceLineNo">198</span> sendStopSignal();<a name="line.198"></a> +<span class="sourceLineNo">199</span> syncThread.join(250);<a name="line.199"></a> +<span class="sourceLineNo">200</span> }<a name="line.200"></a> +<span class="sourceLineNo">201</span> } catch (InterruptedException e) {<a name="line.201"></a> +<span class="sourceLineNo">202</span> LOG.warn("join interrupted", e);<a name="line.202"></a> +<span class="sourceLineNo">203</span> Thread.currentThread().interrupt();<a name="line.203"></a> +<span class="sourceLineNo">204</span> }<a name="line.204"></a> +<span class="sourceLineNo">205</span> }<a name="line.205"></a> +<span class="sourceLineNo">206</span><a name="line.206"></a> +<span class="sourceLineNo">207</span> // Close the writer<a name="line.207"></a> +<span class="sourceLineNo">208</span> closeStream();<a name="line.208"></a> +<span class="sourceLineNo">209</span><a name="line.209"></a> +<span class="sourceLineNo">210</span> // Close the old logs<a name="line.210"></a> +<span class="sourceLineNo">211</span> // they should be already closed, this is just in case the load fails<a name="line.211"></a> +<span class="sourceLineNo">212</span> // and we call start() and then stop()<a name="line.212"></a> +<span class="sourceLineNo">213</span> for (ProcedureWALFile log: logs) {<a name="line.213"></a> +<span class="sourceLineNo">214</span> log.close();<a name="line.214"></a> +<span class="sourceLineNo">215</span> }<a name="line.215"></a> +<span class="sourceLineNo">216</span> logs.clear();<a name="line.216"></a> +<span class="sourceLineNo">217</span> }<a name="line.217"></a> +<span class="sourceLineNo">218</span><a name="line.218"></a> +<span class="sourceLineNo">219</span> private void sendStopSignal() {<a name="line.219"></a> +<span class="sourceLineNo">220</span> if (lock.tryLock()) {<a name="line.220"></a> +<span class="sourceLineNo">221</span> try {<a name="line.221"></a> +<span class="sourceLineNo">222</span> waitCond.signalAll();<a name="line.222"></a> +<span class="sourceLineNo">223</span> syncCond.signalAll();<a name="line.223"></a> +<span class="sourceLineNo">224</span> } finally {<a name="line.224"></a> +<span class="sourceLineNo">225</span> lock.unlock();<a name="line.225"></a> +<span class="sourceLineNo">226</span> }<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> @Override<a name="line.230"></a> +<span class="sourceLineNo">231</span> public int getNumThreads() {<a name="line.231"></a> +<span class="sourceLineNo">232</span> return slots == null ? 0 : slots.length;<a name="line.232"></a> +<span class="sourceLineNo">233</span> }<a name="line.233"></a> +<span class="sourceLineNo">234</span><a name="line.234"></a> +<span class="sourceLineNo">235</span> public ProcedureStoreTracker getStoreTracker() {<a name="line.235"></a> +<span class="sourceLineNo">236</span> return storeTracker;<a name="line.236"></a> +<span class="sourceLineNo">237</span> }<a name="line.237"></a> +<span class="sourceLineNo">238</span><a name="line.238"></a> +<span class="sourceLineNo">239</span> public LinkedList<ProcedureWALFile> getActiveLogs() {<a name="line.239"></a> +<span class="sourceLineNo">240</span> return logs;<a name="line.240"></a> +<span class="sourceLineNo">241</span> }<a name="line.241"></a> +<span class="sourceLineNo">242</span><a name="line.242"></a> +<span class="sourceLineNo">243</span> public Set<ProcedureWALFile> getCorruptedLogs() {<a name="line.243"></a> +<span class="sourceLineNo">244</span> return corruptedLogs;<a name="line.244"></a> +<span class="sourceLineNo">245</span> }<a name="line.245"></a> +<span class="sourceLineNo">246</span><a name="line.246"></a> +<span class="sourceLineNo">247</span> @Override<a name="line.247"></a> +<span class="sourceLineNo">248</span> public void recoverLease() throws IOException {<a name="line.248"></a> +<span class="sourceLineNo">249</span> lock.lock();<a name="line.249"></a> +<span class="sourceLineNo">250</span> try {<a name="line.250"></a> +<span class="sourceLineNo">251</span> LOG.info("Starting WAL Procedure Store lease recovery");<a name="line.251"></a> +<span class="sourceLineNo">252</span> FileStatus[] oldLogs = getLogFiles();<a name="line.252"></a> +<span class="sourceLineNo">253</span> while (isRunning()) {<a name="line.253"></a> +<span class="sourceLineNo">254</span> // Get Log-MaxID and recover lease on old logs<a name="line.254"></a> +<span class="sourceLineNo">255</span> flushLogId = initOldLogs(oldLogs);<a name="line.255"></a> +<span class="sourceLineNo">256</span><a name="line.256"></a> +<span class="sourceLineNo">257</span> // Create new state-log<a name="line.257"></a> +<span class="sourceLineNo">258</span> if (!rollWriter(flushLogId + 1)) {<a name="line.258"></a> +<span class="sourceLineNo">259</span> // someone else has already created this log<a name="line.259"></a> +<span class="sourceLineNo">260</span> LOG.debug("someone else has already created log " + flushLogId);<a name="line.260"></a> +<span class="sourceLineNo">261</span> continue;<a name="line.261"></a> +<span class="sourceLineNo">262</span> }<a name="line.262"></a> +<span class="sourceLineNo">263</span><a name="line.263"></a> +<span class="sourceLineNo">264</span> // We have the lease on the log<a name="line.264"></a> +<span class="sourceLineNo">265</span> oldLogs = getLogFiles();<a name="line.265"></a> +<span class="sourceLineNo">266</span> if (getMaxLogId(oldLogs) > flushLogId) {<a name="line.266"></a> +<span class="sourceLineNo">267</span> if (LOG.isDebugEnabled()) {<a name="line.267"></a> +<span class="sourceLineNo">268</span> LOG.debug("Someone else created new logs. Expected maxLogId < " + flushLogId);<a name="line.268"></a> +<span class="sourceLineNo">269</span> }<a name="line.269"></a> +<span class="sourceLineNo">270</span> logs.getLast().removeFile();<a name="line.270"></a> +<span class="sourceLineNo">271</span> continue;<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> LOG.info("Lease acquired for flushLogId: " + flushLogId);<a name="line.274"></a> +<span class="sourceLineNo">275</span> break;<a name="line.275"></a> +<span class="sourceLineNo">276</span> }<a name="line.276"></a> +<span class="sourceLineNo">277</span> } finally {<a name="line.277"></a> +<span class="sourceLineNo">278</span> lock.unlock();<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><a name="line.281"></a> +<span class="sourceLineNo">282</span> @Override<a name="line.282"></a> +<span class="sourceLineNo">283</span> public void load(final ProcedureLoader loader) throws IOException {<a name="line.283"></a> +<span class="sourceLineNo">284</span> if (logs.isEmpty()) {<a name="line.284"></a> +<span class="sourceLineNo">285</span> throw new RuntimeException("recoverLease() must be called before loading data");<a name="line.285"></a> +<span class="sourceLineNo">286</span> }<a name="line.286"></a> +<span class="sourceLineNo">287</span><a name="line.287"></a> +<span class="sourceLineNo">288</span> // Nothing to do, If we have only the current log.<a name="line.288"></a> +<span class="sourceLineNo">289</span> if (logs.size() == 1) {<a name="line.289"></a> +<span class="sourceLineNo">290</span> if (LOG.isDebugEnabled()) {<a name="line.290"></a> +<span class="sourceLineNo">291</span> LOG.debug("No state logs to replay.");<a name="line.291"></a> +<span class="sourceLineNo">292</span> }<a name="line.292"></a> +<span class="sourceLineNo">293</span> loader.setMaxProcId(0);<a name="line.293"></a> +<span class="sourceLineNo">294</span> loading.set(false);<a name="line.294"></a> +<span class="sourceLineNo">295</span> return;<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> // Load the old logs<a name="line.298"></a> +<span class="sourceLineNo">299</span> final ArrayList<ProcedureWALFile> toRemove = new ArrayList<ProcedureWALFile>();<a name="line.299"></a> +<span class="sourceLineNo">300</span> Iterator<ProcedureWALFile> it = logs.descendingIterator();<a name="line.300"></a> +<span class="sourceLineNo">301</span> it.next(); // Skip the current log<a name="line.301"></a> +<span class="sourceLineNo">302</span> try {<a name="line.302"></a> +<span class="sourceLineNo">303</span> ProcedureWALFormat.load(it, storeTracker, new ProcedureWALFormat.Loader() {<a name="line.303"></a> +<span class="sourceLineNo">304</span> @Override<a name="line.304"></a> +<span class="sourceLineNo">305</span> public void setMaxProcId(long maxProcId) {<a name="line.305"></a> +<span class="sourceLineNo">306</span> loader.setMaxProcId(maxProcId);<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> @Override<a name="line.309"></a> +<span class="sourceLineNo">310</span> public void load(ProcedureIterator procIter) throws IOException {<a name="line.310"></a> +<span class="sourceLineNo">311</span> loader.load(procIter);<a name="line.311"></a> +<span class="sourceLineNo">312</span> }<a name="line.312"></a> +<span class="sourceLineNo">313</span><a name="line.313"></a> +<span class="sourceLineNo">314</span> @Override<a name="line.314"></a> +<span class="sourceLineNo">315</span> public void handleCorrupted(ProcedureIterator procIter) throws IOException {<a name="line.315"></a> +<span class="sourceLineNo">316</span> loader.handleCorrupted(procIter);<a name="line.316"></a> +<span class="sourceLineNo">317</span> }<a name="line.317"></a> +<span class="sourceLineNo">318</span><a name="line.318"></a> +<span class="sourceLineNo">319</span> @Override<a name="line.319"></a> +<span class="sourceLineNo">320</span> public void removeLog(ProcedureWALFile log) {<a name="line.320"></a> +<span class="sourceLineNo">321</span> toRemove.add(log);<a name="line.321"></a> +<span class="sourceLineNo">322</span> }<a name="line.322"></a> +<span class="sourceLineNo">323</span><a name="line.323"></a> +<span class="sourceLineNo">324</span> @Override<a name="line.324"></a> +<span class="sourceLineNo">325</span> public void markCorruptedWAL(ProcedureWALFile log, IOException e) {<a name="line.325"></a> +<span class="sourceLineNo">326</span> if (corruptedLogs == null) {<a name="line.326"></a> +<span class="sourceLineNo">327</span> corruptedLogs = new HashSet<ProcedureWALFile>();<a name="line.327"></a> +<span class="sourceLineNo">328</span> }<a name="line.328"></a> +<span class="sourceLineNo">329</span> corruptedLogs.add(log);<a name="line.329"></a> +<span class="sourceLineNo">330</span> // TODO: sideline corrupted log<a name="line.330"></a> +<span class="sourceLineNo">331</span> }<a name="line.331"></a> +<span class="sourceLineNo">332</span> });<a name="line.332"></a> +<span class="sourceLineNo">333</span> } finally {<a name="line.333"></a> +<span class="sourceLineNo">334</span> if (!toRemove.isEmpty()) {<a name="line.334"></a> +<span class="sourceLineNo">335</span> for (ProcedureWALFile log: toRemove) {<a name="line.335"></a> +<span class="sourceLineNo">336</span> removeLogFile(log);<a name="line.336"></a> +<span class="sourceLineNo">337</span> }<a name="line.337"></a> +<span class="sourceLineNo">338</span> }<a name="line.338"></a> +<span class="sourceLineNo">339</span> loading.set(false);<a name="line.339"></a> +<span class="sourceLineNo">340</span> }<a name="line.340"></a> +<span class="sourceLineNo">341</span> }<a name="line.341"></a> +<span class="sourceLineNo">342</span><a name="line.342"></a> +<span class="sourceLineNo">343</span> @Override<a name="line.343"></a> +<span class="sourceLineNo">344</span> public void insert(final Procedure proc, final Procedure[] subprocs) {<a name="line.344"></a> +<span class="sourceLineNo">345</span> if (LOG.isTraceEnabled()) {<a name="line.345"></a> +<span class="sourceLineNo">346</span> LOG.trace("Insert " + proc + ", subproc=" + Arrays.toString(subprocs));<a name="line.346"></a> +<span class="sourceLineNo">347</span> }<a name="line.347"></a> +<span class="sourceLineNo">348</span><a name="line.348"></a> +<span class="sourceLineNo">349</span> ByteSlot slot = acquireSlot();<a name="line.349"></a> +<span class="sourceLineNo">350</span> try {<a name="line.350"></a> +<span class="sourceLineNo">351</span> // Serialize the insert<a name="line.351"></a> +<span class="sourceLineNo">352</span> long[] subProcIds = null;<a name="line.352"></a> +<span class="sourceLineNo">353</span> if (subprocs != null) {<a name="line.353"></a> +<span class="sourceLineNo">354</span> ProcedureWALFormat.writeInsert(slot, proc, subprocs);<a name="line.354"></a> +<span class="sourceLineNo">355</span> subProcIds = new long[subprocs.length];<a name="line.355"></a> +<span class="sourceLineNo">356</span> for (int i = 0; i < subprocs.length; ++i) {<a name="line.356"></a> +<span class="sourceLineNo">357</span> subProcIds[i] = subprocs[i].getProcId();<a name="line.357"></a> +<span class="sourceLineNo">358</span> }<a name="line.358"></a> +<span class="sourceLineNo">359</span> } else {<a name="line.359"></a> +<span class="sourceLineNo">360</span> assert !proc.hasParent();<a name="line.360"></a> +<span class="sourceLineNo">361</span> ProcedureWALFormat.writeInsert(slot, proc);<a name="line.361"></a> +<span class="sourceLineNo">362</span> }<a name="line.362"></a> +<span class="sourceLineNo">363</span><a name="line.363"></a> +<span class="sourceLineNo">364</span> // Push the transaction data and wait until it is persisted<a name="line.364"></a> +<span class="sourceLineNo">365</span> pushData(PushType.INSERT, slot, proc.getProcId(), subProcIds);<a name="line.365"></a> +<span class="sourceLineNo">366</span> } catch (IOException e) {<a name="line.366"></a> +<span class="sourceLineNo">367</span> // We are not able to serialize the procedure.<a name="line.367"></a> +<span class="sourceLineNo">368</span> // this is a code error, and we are not able to go on.<a name="line.368"></a> +<span class="sourceLineNo">369</span> LOG.fatal("Unable to serialize one of the procedure: proc=" + proc +<a name="line.369"></a> +<span class="sourceLineNo">370</span> ", subprocs=" + Arrays.toString(subprocs), e);<a name="line.370"></a> +<span class="sourceLineNo">371</span> throw new RuntimeException(e);<a name="line.371"></a> +<span class="sourceLineNo">372</span> } finally {<a name="line.372"></a> +<span class="sourceLineNo">373</span> releaseSlot(slot);<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><a name="line.376"></a> +<span class="sourceLineNo">377</span> @Override<a name="line.377"></a> +<span class="sourceLineNo">378</span> public void update(final Procedure proc) {<a name="line.378"></a> +<span class="sourceLineNo">379</span> if (LOG.isTraceEnabled()) {<a name="line.379"></a> +<span class="sourceLineNo">380</span> LOG.trace("Update " + proc);<a name="line.380"></a> +<span class="sourceLineNo">381</span> }<a name="line.381"></a> +<span class="sourceLineNo">382</span><a name="line.382"></a> +<span class="sourceLineNo">383</span> ByteSlot slot = acquireSlot();<a name="line.383"></a> +<span class="sourceLineNo">384</span> try {<a name="line.384"></a> +<span class="sourceLineNo">385</span> // Serialize the update<a name="line.385"></a> +<span class="sourceLineNo">386</span> ProcedureWALFormat.writeUpdate(slot, proc);<a name="line.386"></a> +<span class="sourceLineNo">387</span><a name="line.387"></a> +<span class="sourceLineNo">388</span> // Push the transaction data and wait until it is persisted<a name="line.388"></a> +<span class="sourceLineNo">389</span> pushData(PushType.UPDATE, slot, proc.getProcId(), null);<a name="line.389"></a> +<span class="sourceLineNo">390</span> } catch (IOException e) {<a name="line.390"></a> +<span class="sourceLineNo">391</span> // We are not able to serialize the procedure.<a name="line.391"></a> +<span class="sourceLineNo">392</span> // this is a code error, and we are not able to go on.<a name="line.392"></a> +<span class="sourceLineNo">393</span> LOG.fatal("Unable to serialize the procedure: " + proc, e);<a name="line.393"></a> +<span class="sourceLineNo">394</span> throw new RuntimeException(e);<a name="line.394"></a> +<span class="sourceLineNo">395</span> } finally {<a name="line.395"></a> +<span class="sourceLineNo">396</span> releaseSlot(slot);<a name="line.396"></a> +<span class="sourceLineNo">397</span> }<a name="line.397"></a> +<span class="sourceLineNo">398</span> }<a name="line.398"></a> +<span class="sourceLineNo">399</span><a name="line.399"></a> +<span class="sourceLineNo">400</span> @Override<a name="line.400"></a> +<span class="sourceLineNo">401</span> public void delete(final long procId) {<a name="line.401"></a> +<span class="sourceLineNo">402</span> if (LOG.isTraceEnabled()) {<a name="line.402"></a> +<span class="sourceLineNo">403</span> LOG.trace("Delete " + procId);<a name="line.403"></a> <span class="sourceLineNo">404</span> }<a name="line.404"></a> -<span class="sourceLineNo">405</span> }<a name="line.405"></a> -<span class="sourceLineNo">406</span><a name="line.406"></a> -<span class="sourceLineNo">407</span> @Override<a 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StringUtils.humanSize(totalSynced.get() / rollTsSec)));<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> waitCond.await(getMillisToNextPeriodicRoll(), TimeUnit.MILLISECONDS);<a name="line.547"></a> -<span class="sourceLineNo">548</span> if (slotIndex == 0) {<a name="line.548"></a> -<span class="sourceLineNo">549</span> // no data.. probably a stop() or a periodic roll<a name="line.549"></a> -<span class="sourceLineNo">550</span> periodicRoll();<a name="line.550"></a> -<span class="sourceLineNo">551</span> continue;<a name="line.551"></a> -<span class="sourceLineNo">552</span> }<a name="line.552"></a> -<span class="sourceLineNo">553</span> }<a name="line.553"></a> -<span class="sourceLineNo">554</span><a name="line.554"></a> -<span class="sourceLineNo">555</span> // Wait SYNC_WAIT_MSEC or the signal of "slots full" before flushing<a 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<TRUNCATED>
