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 2018/07/04 14:51:20 UTC
[16/31] hbase-site git commit: Published site at
3e7f724837e35f41153bc3059e8ac507583a9200.
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/624dc6ea/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 8f754e2..a07f45e 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
@@ -224,1107 +224,1108 @@
<span class="sourceLineNo">216</span> }<a name="line.216"></a>
<span class="sourceLineNo">217</span> }<a name="line.217"></a>
<span class="sourceLineNo">218</span> // Now that it exists, set the log policy<a name="line.218"></a>
-<span class="sourceLineNo">219</span> CommonFSUtils.setStoragePolicy(fs, conf, walDir, HConstants.WAL_STORAGE_POLICY,<a name="line.219"></a>
-<span class="sourceLineNo">220</span> HConstants.DEFAULT_WAL_STORAGE_POLICY);<a name="line.220"></a>
-<span class="sourceLineNo">221</span><a name="line.221"></a>
-<span class="sourceLineNo">222</span> // Create archive dir up front. Rename won't work w/o it up on HDFS.<a name="line.222"></a>
-<span class="sourceLineNo">223</span> if (this.walArchiveDir != null && !this.fs.exists(this.walArchiveDir)) {<a name="line.223"></a>
-<span class="sourceLineNo">224</span> if (this.fs.mkdirs(this.walArchiveDir)) {<a name="line.224"></a>
-<span class="sourceLineNo">225</span> if (LOG.isDebugEnabled()) {<a name="line.225"></a>
-<span class="sourceLineNo">226</span> LOG.debug("Created Procedure Store WAL archive dir " + this.walArchiveDir);<a name="line.226"></a>
-<span class="sourceLineNo">227</span> }<a name="line.227"></a>
-<span class="sourceLineNo">228</span> } else {<a name="line.228"></a>
-<span class="sourceLineNo">229</span> LOG.warn("Failed create of " + this.walArchiveDir);<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><a name="line.233"></a>
-<span class="sourceLineNo">234</span> @Override<a name="line.234"></a>
-<span class="sourceLineNo">235</span> public void start(int numSlots) throws IOException {<a name="line.235"></a>
-<span class="sourceLineNo">236</span> if (!setRunning(true)) {<a name="line.236"></a>
-<span class="sourceLineNo">237</span> return;<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> // Init buffer slots<a name="line.240"></a>
-<span class="sourceLineNo">241</span> loading.set(true);<a name="line.241"></a>
-<span class="sourceLineNo">242</span> runningProcCount = numSlots;<a name="line.242"></a>
-<span class="sourceLineNo">243</span> syncMaxSlot = numSlots;<a name="line.243"></a>
-<span class="sourceLineNo">244</span> slots = new ByteSlot[numSlots];<a name="line.244"></a>
-<span class="sourceLineNo">245</span> slotsCache = new LinkedTransferQueue();<a name="line.245"></a>
-<span class="sourceLineNo">246</span> while (slotsCache.size() < numSlots) {<a name="line.246"></a>
-<span class="sourceLineNo">247</span> slotsCache.offer(new ByteSlot());<a name="line.247"></a>
-<span class="sourceLineNo">248</span> }<a name="line.248"></a>
-<span class="sourceLineNo">249</span><a name="line.249"></a>
-<span class="sourceLineNo">250</span> // Tunings<a name="line.250"></a>
-<span class="sourceLineNo">251</span> walCountWarnThreshold =<a name="line.251"></a>
-<span class="sourceLineNo">252</span> conf.getInt(WAL_COUNT_WARN_THRESHOLD_CONF_KEY, DEFAULT_WAL_COUNT_WARN_THRESHOLD);<a name="line.252"></a>
-<span class="sourceLineNo">253</span> maxRetriesBeforeRoll =<a name="line.253"></a>
-<span class="sourceLineNo">254</span> conf.getInt(MAX_RETRIES_BEFORE_ROLL_CONF_KEY, DEFAULT_MAX_RETRIES_BEFORE_ROLL);<a name="line.254"></a>
-<span class="sourceLineNo">255</span> maxSyncFailureRoll = conf.getInt(MAX_SYNC_FAILURE_ROLL_CONF_KEY, DEFAULT_MAX_SYNC_FAILURE_ROLL);<a name="line.255"></a>
-<span class="sourceLineNo">256</span> waitBeforeRoll = conf.getInt(WAIT_BEFORE_ROLL_CONF_KEY, DEFAULT_WAIT_BEFORE_ROLL);<a name="line.256"></a>
-<span class="sourceLineNo">257</span> rollRetries = conf.getInt(ROLL_RETRIES_CONF_KEY, DEFAULT_ROLL_RETRIES);<a name="line.257"></a>
-<span class="sourceLineNo">258</span> rollThreshold = conf.getLong(ROLL_THRESHOLD_CONF_KEY, DEFAULT_ROLL_THRESHOLD);<a name="line.258"></a>
-<span class="sourceLineNo">259</span> periodicRollMsec = conf.getInt(PERIODIC_ROLL_CONF_KEY, DEFAULT_PERIODIC_ROLL);<a name="line.259"></a>
-<span class="sourceLineNo">260</span> syncWaitMsec = conf.getInt(SYNC_WAIT_MSEC_CONF_KEY, DEFAULT_SYNC_WAIT_MSEC);<a name="line.260"></a>
-<span class="sourceLineNo">261</span> useHsync = conf.getBoolean(USE_HSYNC_CONF_KEY, DEFAULT_USE_HSYNC);<a name="line.261"></a>
-<span class="sourceLineNo">262</span><a name="line.262"></a>
-<span class="sourceLineNo">263</span> // WebUI<a name="line.263"></a>
-<span class="sourceLineNo">264</span> syncMetricsQueue = new CircularFifoQueue(<a name="line.264"></a>
-<span class="sourceLineNo">265</span> conf.getInt(STORE_WAL_SYNC_STATS_COUNT, DEFAULT_SYNC_STATS_COUNT));<a name="line.265"></a>
-<span class="sourceLineNo">266</span><a name="line.266"></a>
-<span class="sourceLineNo">267</span> // Init sync thread<a name="line.267"></a>
-<span class="sourceLineNo">268</span> syncThread = new Thread("WALProcedureStoreSyncThread") {<a name="line.268"></a>
-<span class="sourceLineNo">269</span> @Override<a name="line.269"></a>
-<span class="sourceLineNo">270</span> public void run() {<a name="line.270"></a>
-<span class="sourceLineNo">271</span> try {<a name="line.271"></a>
-<span class="sourceLineNo">272</span> syncLoop();<a name="line.272"></a>
-<span class="sourceLineNo">273</span> } catch (Throwable e) {<a name="line.273"></a>
-<span class="sourceLineNo">274</span> LOG.error("Got an exception from the sync-loop", e);<a name="line.274"></a>
-<span class="sourceLineNo">275</span> if (!isSyncAborted()) {<a name="line.275"></a>
-<span class="sourceLineNo">276</span> sendAbortProcessSignal();<a name="line.276"></a>
-<span class="sourceLineNo">277</span> }<a name="line.277"></a>
-<span class="sourceLineNo">278</span> }<a name="line.278"></a>
-<span class="sourceLineNo">279</span> }<a name="line.279"></a>
-<span class="sourceLineNo">280</span> };<a name="line.280"></a>
-<span class="sourceLineNo">281</span> syncThread.start();<a name="line.281"></a>
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-<span class="sourceLineNo">283</span><a name="line.283"></a>
-<span class="sourceLineNo">284</span> @Override<a name="line.284"></a>
-<span class="sourceLineNo">285</span> public void stop(final boolean abort) {<a name="line.285"></a>
-<span class="sourceLineNo">286</span> if (!setRunning(false)) {<a name="line.286"></a>
-<span class="sourceLineNo">287</span> return;<a name="line.287"></a>
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-<span class="sourceLineNo">289</span><a name="line.289"></a>
-<span class="sourceLineNo">290</span> LOG.info("Stopping the WAL Procedure Store, isAbort=" + abort +<a name="line.290"></a>
-<span class="sourceLineNo">291</span> (isSyncAborted() ? " (self aborting)" : ""));<a name="line.291"></a>
-<span class="sourceLineNo">292</span> sendStopSignal();<a name="line.292"></a>
-<span class="sourceLineNo">293</span> if (!isSyncAborted()) {<a name="line.293"></a>
-<span class="sourceLineNo">294</span> try {<a name="line.294"></a>
-<span class="sourceLineNo">295</span> while (syncThread.isAlive()) {<a name="line.295"></a>
-<span class="sourceLineNo">296</span> sendStopSignal();<a name="line.296"></a>
-<span class="sourceLineNo">297</span> syncThread.join(250);<a name="line.297"></a>
-<span class="sourceLineNo">298</span> }<a name="line.298"></a>
-<span class="sourceLineNo">299</span> } catch (InterruptedException e) {<a name="line.299"></a>
-<span class="sourceLineNo">300</span> LOG.warn("join interrupted", e);<a name="line.300"></a>
-<span class="sourceLineNo">301</span> Thread.currentThread().interrupt();<a name="line.301"></a>
-<span class="sourceLineNo">302</span> }<a name="line.302"></a>
-<span class="sourceLineNo">303</span> }<a name="line.303"></a>
-<span class="sourceLineNo">304</span><a name="line.304"></a>
-<span class="sourceLineNo">305</span> // Close the writer<a name="line.305"></a>
-<span class="sourceLineNo">306</span> closeCurrentLogStream();<a name="line.306"></a>
-<span class="sourceLineNo">307</span><a name="line.307"></a>
-<span class="sourceLineNo">308</span> // Close the old logs<a name="line.308"></a>
-<span class="sourceLineNo">309</span> // they should be already closed, this is just in case the load fails<a name="line.309"></a>
-<span class="sourceLineNo">310</span> // and we call start() and then stop()<a name="line.310"></a>
-<span class="sourceLineNo">311</span> for (ProcedureWALFile log: logs) {<a name="line.311"></a>
-<span class="sourceLineNo">312</span> log.close();<a name="line.312"></a>
-<span class="sourceLineNo">313</span> }<a name="line.313"></a>
-<span class="sourceLineNo">314</span> logs.clear();<a name="line.314"></a>
-<span class="sourceLineNo">315</span> loading.set(true);<a name="line.315"></a>
-<span class="sourceLineNo">316</span> }<a name="line.316"></a>
-<span class="sourceLineNo">317</span><a name="line.317"></a>
-<span class="sourceLineNo">318</span> private void sendStopSignal() {<a name="line.318"></a>
-<span class="sourceLineNo">319</span> if (lock.tryLock()) {<a name="line.319"></a>
-<span class="sourceLineNo">320</span> try {<a name="line.320"></a>
-<span class="sourceLineNo">321</span> waitCond.signalAll();<a name="line.321"></a>
-<span class="sourceLineNo">322</span> syncCond.signalAll();<a name="line.322"></a>
-<span class="sourceLineNo">323</span> } finally {<a name="line.323"></a>
-<span class="sourceLineNo">324</span> lock.unlock();<a name="line.324"></a>
-<span class="sourceLineNo">325</span> }<a name="line.325"></a>
-<span class="sourceLineNo">326</span> }<a name="line.326"></a>
-<span class="sourceLineNo">327</span> }<a name="line.327"></a>
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-<span class="sourceLineNo">329</span> @Override<a name="line.329"></a>
-<span class="sourceLineNo">330</span> public int getNumThreads() {<a name="line.330"></a>
-<span class="sourceLineNo">331</span> return slots == null ? 0 : slots.length;<a name="line.331"></a>
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-<span class="sourceLineNo">333</span><a name="line.333"></a>
-<span class="sourceLineNo">334</span> @Override<a name="line.334"></a>
-<span class="sourceLineNo">335</span> public int setRunningProcedureCount(final int count) {<a name="line.335"></a>
-<span class="sourceLineNo">336</span> this.runningProcCount = count > 0 ? Math.min(count, slots.length) : slots.length;<a name="line.336"></a>
-<span class="sourceLineNo">337</span> return this.runningProcCount;<a name="line.337"></a>
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-<span class="sourceLineNo">339</span><a name="line.339"></a>
-<span class="sourceLineNo">340</span> public ProcedureStoreTracker getStoreTracker() {<a name="line.340"></a>
-<span class="sourceLineNo">341</span> return storeTracker;<a name="line.341"></a>
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-<span class="sourceLineNo">343</span><a name="line.343"></a>
-<span class="sourceLineNo">344</span> public ArrayList<ProcedureWALFile> getActiveLogs() {<a name="line.344"></a>
-<span class="sourceLineNo">345</span> lock.lock();<a name="line.345"></a>
-<span class="sourceLineNo">346</span> try {<a name="line.346"></a>
-<span class="sourceLineNo">347</span> return new ArrayList<>(logs);<a name="line.347"></a>
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-<span class="sourceLineNo">349</span> lock.unlock();<a name="line.349"></a>
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-<span class="sourceLineNo">351</span> }<a name="line.351"></a>
-<span class="sourceLineNo">352</span><a name="line.352"></a>
-<span class="sourceLineNo">353</span> public Set<ProcedureWALFile> getCorruptedLogs() {<a name="line.353"></a>
-<span class="sourceLineNo">354</span> return corruptedLogs;<a name="line.354"></a>
-<span class="sourceLineNo">355</span> }<a name="line.355"></a>
-<span class="sourceLineNo">356</span><a name="line.356"></a>
-<span class="sourceLineNo">357</span> @Override<a name="line.357"></a>
-<span class="sourceLineNo">358</span> public void recoverLease() throws IOException {<a name="line.358"></a>
-<span class="sourceLineNo">359</span> lock.lock();<a name="line.359"></a>
-<span class="sourceLineNo">360</span> try {<a name="line.360"></a>
-<span class="sourceLineNo">361</span> LOG.trace("Starting WAL Procedure Store lease recovery");<a name="line.361"></a>
-<span class="sourceLineNo">362</span> boolean afterFirstAttempt = false;<a name="line.362"></a>
-<span class="sourceLineNo">363</span> while (isRunning()) {<a name="line.363"></a>
-<span class="sourceLineNo">364</span> // Don't sleep before first attempt<a name="line.364"></a>
-<span class="sourceLineNo">365</span> if (afterFirstAttempt) {<a name="line.365"></a>
-<span class="sourceLineNo">366</span> LOG.trace("Sleep {} ms after first lease recovery attempt.",<a name="line.366"></a>
-<span class="sourceLineNo">367</span> waitBeforeRoll);<a name="line.367"></a>
-<span class="sourceLineNo">368</span> Threads.sleepWithoutInterrupt(waitBeforeRoll);<a name="line.368"></a>
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-<span class="sourceLineNo">370</span> afterFirstAttempt = true;<a name="line.370"></a>
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-<span class="sourceLineNo">374</span> try {<a name="line.374"></a>
-<span class="sourceLineNo">375</span> flushLogId = initOldLogs(oldLogs);<a name="line.375"></a>
-<span class="sourceLineNo">376</span> } catch (FileNotFoundException e) {<a name="line.376"></a>
-<span class="sourceLineNo">377</span> LOG.warn("Someone else is active and deleted logs. retrying.", e);<a name="line.377"></a>
-<span class="sourceLineNo">378</span> continue;<a name="line.378"></a>
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-<span class="sourceLineNo">380</span><a name="line.380"></a>
-<span class="sourceLineNo">381</span> // Create new state-log<a name="line.381"></a>
-<span class="sourceLineNo">382</span> if (!rollWriter(flushLogId + 1)) {<a name="line.382"></a>
-<span class="sourceLineNo">383</span> // someone else has already created this log<a name="line.383"></a>
-<span class="sourceLineNo">384</span> LOG.debug("Someone else has already created log {}. Retrying.", flushLogId);<a name="line.384"></a>
-<span class="sourceLineNo">385</span> continue;<a name="line.385"></a>
-<span class="sourceLineNo">386</span> }<a name="line.386"></a>
-<span class="sourceLineNo">387</span><a name="line.387"></a>
-<span class="sourceLineNo">388</span> // We have the lease on the log<a name="line.388"></a>
-<span class="sourceLineNo">389</span> oldLogs = getLogFiles();<a name="line.389"></a>
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-<span class="sourceLineNo">391</span> if (LOG.isDebugEnabled()) {<a name="line.391"></a>
-<span class="sourceLineNo">392</span> LOG.debug("Someone else created new logs. Expected maxLogId < " + flushLogId);<a name="line.392"></a>
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-<span class="sourceLineNo">394</span> logs.getLast().removeFile(this.walArchiveDir);<a name="line.394"></a>
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-<span class="sourceLineNo">397</span><a name="line.397"></a>
-<span class="sourceLineNo">398</span> LOG.trace("Lease acquired for flushLogId={}", flushLogId);<a name="line.398"></a>
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-<span class="sourceLineNo">410</span> if (logs.isEmpty()) {<a name="line.410"></a>
-<span class="sourceLineNo">411</span> throw new RuntimeException("recoverLease() must be called before loading data");<a name="line.411"></a>
-<span class="sourceLineNo">412</span> }<a name="line.412"></a>
-<span class="sourceLineNo">413</span><a name="line.413"></a>
-<span class="sourceLineNo">414</span> // Nothing to do, If we have only the current log.<a name="line.414"></a>
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-<span class="sourceLineNo">416</span> LOG.trace("No state logs to replay.");<a name="line.416"></a>
-<span class="sourceLineNo">417</span> loader.setMaxProcId(0);<a name="line.417"></a>
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-<span class="sourceLineNo">421</span> // Load the old logs<a name="line.421"></a>
-<span class="sourceLineNo">422</span> final Iterator<ProcedureWALFile> it = logs.descendingIterator();<a name="line.422"></a>
-<span class="sourceLineNo">423</span> it.next(); // Skip the current log<a name="line.423"></a>
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-<span class="sourceLineNo">433</span> loader.load(procIter);<a name="line.433"></a>
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-<span class="sourceLineNo">435</span><a name="line.435"></a>
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-<span class="sourceLineNo">437</span> public void handleCorrupted(ProcedureIterator procIter) throws IOException {<a name="line.437"></a>
-<span class="sourceLineNo">438</span> loader.handleCorrupted(procIter);<a name="line.438"></a>
-<span class="sourceLineNo">439</span> }<a name="line.439"></a>
-<span class="sourceLineNo">440</span><a name="line.440"></a>
-<span class="sourceLineNo">441</span> @Override<a name="line.441"></a>
-<span class="sourceLineNo">442</span> public void markCorruptedWAL(ProcedureWALFile log, IOException e) {<a name="line.442"></a>
-<span class="sourceLineNo">443</span> if (corruptedLogs == null) {<a name="line.443"></a>
-<span class="sourceLineNo">444</span> corruptedLogs = new HashSet<>();<a name="line.444"></a>
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-<span class="sourceLineNo">446</span> corruptedLogs.add(log);<a name="line.446"></a>
-<span class="sourceLineNo">447</span> // TODO: sideline corrupted log<a name="line.447"></a>
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-<span class="sourceLineNo">451</span> try {<a name="line.451"></a>
-<span class="sourceLineNo">452</span> // try to cleanup inactive wals and complete the operation<a name="line.452"></a>
-<span class="sourceLineNo">453</span> buildHoldingCleanupTracker();<a name="line.453"></a>
-<span class="sourceLineNo">454</span> tryCleanupLogsOnLoad();<a name="line.454"></a>
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-<span class="sourceLineNo">457</span> lock.unlock();<a name="line.457"></a>
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-<span class="sourceLineNo">459</span> }<a name="line.459"></a>
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