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Posted to commits@hbase.apache.org by mi...@apache.org on 2016/02/05 17:46:21 UTC
[24/51] [partial] hbase-site git commit: Published site at
6f6a8ed71fe98b83e8a8db974fc15b0d8597b174.
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/1b9384b2/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/HRegion.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/HRegion.html b/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/HRegion.html
index d03724e..658fe8f 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/HRegion.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/HRegion.html
@@ -292,7951 +292,7969 @@
<span class="sourceLineNo">284</span><a name="line.284"></a>
<span class="sourceLineNo">285</span> //Number of requests<a name="line.285"></a>
<span class="sourceLineNo">286</span> final Counter readRequestsCount = new Counter();<a name="line.286"></a>
-<span class="sourceLineNo">287</span> final Counter writeRequestsCount = new Counter();<a name="line.287"></a>
-<span class="sourceLineNo">288</span><a name="line.288"></a>
-<span class="sourceLineNo">289</span> // Number of requests blocked by memstore size.<a name="line.289"></a>
-<span class="sourceLineNo">290</span> private final Counter blockedRequestsCount = new Counter();<a name="line.290"></a>
-<span class="sourceLineNo">291</span><a name="line.291"></a>
-<span class="sourceLineNo">292</span> // Compaction counters<a name="line.292"></a>
-<span class="sourceLineNo">293</span> final AtomicLong compactionsFinished = new AtomicLong(0L);<a name="line.293"></a>
-<span class="sourceLineNo">294</span> final AtomicLong compactionNumFilesCompacted = new AtomicLong(0L);<a name="line.294"></a>
-<span class="sourceLineNo">295</span> final AtomicLong compactionNumBytesCompacted = new AtomicLong(0L);<a name="line.295"></a>
-<span class="sourceLineNo">296</span><a name="line.296"></a>
-<span class="sourceLineNo">297</span> private final WAL wal;<a name="line.297"></a>
-<span class="sourceLineNo">298</span> private final HRegionFileSystem fs;<a name="line.298"></a>
-<span class="sourceLineNo">299</span> protected final Configuration conf;<a name="line.299"></a>
-<span class="sourceLineNo">300</span> private final Configuration baseConf;<a name="line.300"></a>
-<span class="sourceLineNo">301</span> private final int rowLockWaitDuration;<a name="line.301"></a>
-<span class="sourceLineNo">302</span> private CompactedHFilesDischarger compactedFileDischarger;<a name="line.302"></a>
-<span class="sourceLineNo">303</span> static final int DEFAULT_ROWLOCK_WAIT_DURATION = 30000;<a name="line.303"></a>
-<span class="sourceLineNo">304</span><a name="line.304"></a>
-<span class="sourceLineNo">305</span> // The internal wait duration to acquire a lock before read/update<a name="line.305"></a>
-<span class="sourceLineNo">306</span> // from the region. It is not per row. The purpose of this wait time<a name="line.306"></a>
-<span class="sourceLineNo">307</span> // is to avoid waiting a long time while the region is busy, so that<a name="line.307"></a>
-<span class="sourceLineNo">308</span> // we can release the IPC handler soon enough to improve the<a name="line.308"></a>
-<span class="sourceLineNo">309</span> // availability of the region server. It can be adjusted by<a name="line.309"></a>
-<span class="sourceLineNo">310</span> // tuning configuration "hbase.busy.wait.duration".<a name="line.310"></a>
-<span class="sourceLineNo">311</span> final long busyWaitDuration;<a name="line.311"></a>
-<span class="sourceLineNo">312</span> static final long DEFAULT_BUSY_WAIT_DURATION = HConstants.DEFAULT_HBASE_RPC_TIMEOUT;<a name="line.312"></a>
-<span class="sourceLineNo">313</span><a name="line.313"></a>
-<span class="sourceLineNo">314</span> // If updating multiple rows in one call, wait longer,<a name="line.314"></a>
-<span class="sourceLineNo">315</span> // i.e. waiting for busyWaitDuration * # of rows. However,<a name="line.315"></a>
-<span class="sourceLineNo">316</span> // we can limit the max multiplier.<a name="line.316"></a>
-<span class="sourceLineNo">317</span> final int maxBusyWaitMultiplier;<a name="line.317"></a>
-<span class="sourceLineNo">318</span><a name="line.318"></a>
-<span class="sourceLineNo">319</span> // Max busy wait duration. There is no point to wait longer than the RPC<a name="line.319"></a>
-<span class="sourceLineNo">320</span> // purge timeout, when a RPC call will be terminated by the RPC engine.<a name="line.320"></a>
-<span class="sourceLineNo">321</span> final long maxBusyWaitDuration;<a name="line.321"></a>
-<span class="sourceLineNo">322</span><a name="line.322"></a>
-<span class="sourceLineNo">323</span> // negative number indicates infinite timeout<a name="line.323"></a>
-<span class="sourceLineNo">324</span> static final long DEFAULT_ROW_PROCESSOR_TIMEOUT = 60 * 1000L;<a name="line.324"></a>
-<span class="sourceLineNo">325</span> final ExecutorService rowProcessorExecutor = Executors.newCachedThreadPool();<a name="line.325"></a>
-<span class="sourceLineNo">326</span><a name="line.326"></a>
-<span class="sourceLineNo">327</span> private final ConcurrentHashMap<RegionScanner, Long> scannerReadPoints;<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> * The sequence ID that was encountered when this region was opened.<a name="line.330"></a>
-<span class="sourceLineNo">331</span> */<a name="line.331"></a>
-<span class="sourceLineNo">332</span> private long openSeqNum = HConstants.NO_SEQNUM;<a name="line.332"></a>
-<span class="sourceLineNo">333</span><a name="line.333"></a>
-<span class="sourceLineNo">334</span> /**<a name="line.334"></a>
-<span class="sourceLineNo">335</span> * The default setting for whether to enable on-demand CF loading for<a name="line.335"></a>
-<span class="sourceLineNo">336</span> * scan requests to this region. Requests can override it.<a name="line.336"></a>
-<span class="sourceLineNo">337</span> */<a name="line.337"></a>
-<span class="sourceLineNo">338</span> private boolean isLoadingCfsOnDemandDefault = false;<a name="line.338"></a>
-<span class="sourceLineNo">339</span><a name="line.339"></a>
-<span class="sourceLineNo">340</span> private final AtomicInteger majorInProgress = new AtomicInteger(0);<a name="line.340"></a>
-<span class="sourceLineNo">341</span> private final AtomicInteger minorInProgress = new AtomicInteger(0);<a name="line.341"></a>
-<span class="sourceLineNo">342</span><a name="line.342"></a>
-<span class="sourceLineNo">343</span> //<a name="line.343"></a>
-<span class="sourceLineNo">344</span> // Context: During replay we want to ensure that we do not lose any data. So, we<a name="line.344"></a>
-<span class="sourceLineNo">345</span> // have to be conservative in how we replay wals. For each store, we calculate<a name="line.345"></a>
-<span class="sourceLineNo">346</span> // the maxSeqId up to which the store was flushed. And, skip the edits which<a name="line.346"></a>
-<span class="sourceLineNo">347</span> // are equal to or lower than maxSeqId for each store.<a name="line.347"></a>
-<span class="sourceLineNo">348</span> // The following map is populated when opening the region<a name="line.348"></a>
-<span class="sourceLineNo">349</span> Map<byte[], Long> maxSeqIdInStores = new TreeMap<byte[], Long>(Bytes.BYTES_COMPARATOR);<a name="line.349"></a>
-<span class="sourceLineNo">350</span><a name="line.350"></a>
-<span class="sourceLineNo">351</span> /** Saved state from replaying prepare flush cache */<a name="line.351"></a>
-<span class="sourceLineNo">352</span> private PrepareFlushResult prepareFlushResult = null;<a name="line.352"></a>
-<span class="sourceLineNo">353</span><a name="line.353"></a>
-<span class="sourceLineNo">354</span> /**<a name="line.354"></a>
-<span class="sourceLineNo">355</span> * Config setting for whether to allow writes when a region is in recovering or not.<a name="line.355"></a>
-<span class="sourceLineNo">356</span> */<a name="line.356"></a>
-<span class="sourceLineNo">357</span> private boolean disallowWritesInRecovering = false;<a name="line.357"></a>
-<span class="sourceLineNo">358</span><a name="line.358"></a>
-<span class="sourceLineNo">359</span> // when a region is in recovering state, it can only accept writes not reads<a name="line.359"></a>
-<span class="sourceLineNo">360</span> private volatile boolean recovering = false;<a name="line.360"></a>
-<span class="sourceLineNo">361</span><a name="line.361"></a>
-<span class="sourceLineNo">362</span> private volatile Optional<ConfigurationManager> configurationManager;<a name="line.362"></a>
-<span class="sourceLineNo">363</span><a name="line.363"></a>
-<span class="sourceLineNo">364</span> /**<a name="line.364"></a>
-<span class="sourceLineNo">365</span> * @return The smallest mvcc readPoint across all the scanners in this<a name="line.365"></a>
-<span class="sourceLineNo">366</span> * region. Writes older than this readPoint, are included in every<a name="line.366"></a>
-<span class="sourceLineNo">367</span> * read operation.<a name="line.367"></a>
-<span class="sourceLineNo">368</span> */<a name="line.368"></a>
-<span class="sourceLineNo">369</span> public long getSmallestReadPoint() {<a name="line.369"></a>
-<span class="sourceLineNo">370</span> long minimumReadPoint;<a name="line.370"></a>
-<span class="sourceLineNo">371</span> // We need to ensure that while we are calculating the smallestReadPoint<a name="line.371"></a>
-<span class="sourceLineNo">372</span> // no new RegionScanners can grab a readPoint that we are unaware of.<a name="line.372"></a>
-<span class="sourceLineNo">373</span> // We achieve this by synchronizing on the scannerReadPoints object.<a name="line.373"></a>
-<span class="sourceLineNo">374</span> synchronized(scannerReadPoints) {<a name="line.374"></a>
-<span class="sourceLineNo">375</span> minimumReadPoint = mvcc.getReadPoint();<a name="line.375"></a>
-<span class="sourceLineNo">376</span><a name="line.376"></a>
-<span class="sourceLineNo">377</span> for (Long readPoint: this.scannerReadPoints.values()) {<a name="line.377"></a>
-<span class="sourceLineNo">378</span> if (readPoint < minimumReadPoint) {<a name="line.378"></a>
-<span class="sourceLineNo">379</span> minimumReadPoint = readPoint;<a name="line.379"></a>
-<span class="sourceLineNo">380</span> }<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> return minimumReadPoint;<a name="line.383"></a>
-<span class="sourceLineNo">384</span> }<a name="line.384"></a>
-<span class="sourceLineNo">385</span><a name="line.385"></a>
-<span class="sourceLineNo">386</span> /*<a name="line.386"></a>
-<span class="sourceLineNo">387</span> * Data structure of write state flags used coordinating flushes,<a name="line.387"></a>
-<span class="sourceLineNo">388</span> * compactions and closes.<a name="line.388"></a>
-<span class="sourceLineNo">389</span> */<a name="line.389"></a>
-<span class="sourceLineNo">390</span> static class WriteState {<a name="line.390"></a>
-<span class="sourceLineNo">391</span> // Set while a memstore flush is happening.<a name="line.391"></a>
-<span class="sourceLineNo">392</span> volatile boolean flushing = false;<a name="line.392"></a>
-<span class="sourceLineNo">393</span> // Set when a flush has been requested.<a name="line.393"></a>
-<span class="sourceLineNo">394</span> volatile boolean flushRequested = false;<a name="line.394"></a>
-<span class="sourceLineNo">395</span> // Number of compactions running.<a name="line.395"></a>
-<span class="sourceLineNo">396</span> AtomicInteger compacting = new AtomicInteger(0);<a name="line.396"></a>
-<span class="sourceLineNo">397</span> // Gets set in close. If set, cannot compact or flush again.<a name="line.397"></a>
-<span class="sourceLineNo">398</span> volatile boolean writesEnabled = true;<a name="line.398"></a>
-<span class="sourceLineNo">399</span> // Set if region is read-only<a name="line.399"></a>
-<span class="sourceLineNo">400</span> volatile boolean readOnly = false;<a name="line.400"></a>
-<span class="sourceLineNo">401</span> // whether the reads are enabled. This is different than readOnly, because readOnly is<a name="line.401"></a>
-<span class="sourceLineNo">402</span> // static in the lifetime of the region, while readsEnabled is dynamic<a name="line.402"></a>
-<span class="sourceLineNo">403</span> volatile boolean readsEnabled = true;<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> * Set flags that make this region read-only.<a name="line.406"></a>
-<span class="sourceLineNo">407</span> *<a name="line.407"></a>
-<span class="sourceLineNo">408</span> * @param onOff flip value for region r/o setting<a name="line.408"></a>
-<span class="sourceLineNo">409</span> */<a name="line.409"></a>
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-<span class="sourceLineNo">412</span> this.readOnly = onOff;<a name="line.412"></a>
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-<span class="sourceLineNo">414</span><a name="line.414"></a>
-<span class="sourceLineNo">415</span> boolean isReadOnly() {<a name="line.415"></a>
-<span class="sourceLineNo">416</span> return this.readOnly;<a name="line.416"></a>
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-<span class="sourceLineNo">418</span><a name="line.418"></a>
-<span class="sourceLineNo">419</span> boolean isFlushRequested() {<a name="line.419"></a>
-<span class="sourceLineNo">420</span> return this.flushRequested;<a name="line.420"></a>
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-<span class="sourceLineNo">422</span><a name="line.422"></a>
-<span class="sourceLineNo">423</span> void setReadsEnabled(boolean readsEnabled) {<a name="line.423"></a>
-<span class="sourceLineNo">424</span> this.readsEnabled = readsEnabled;<a name="line.424"></a>
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-<span class="sourceLineNo">426</span><a name="line.426"></a>
-<span class="sourceLineNo">427</span> static final long HEAP_SIZE = ClassSize.align(<a name="line.427"></a>
-<span class="sourceLineNo">428</span> ClassSize.OBJECT + 5 * Bytes.SIZEOF_BOOLEAN);<a name="line.428"></a>
-<span class="sourceLineNo">429</span> }<a name="line.429"></a>
-<span class="sourceLineNo">430</span><a name="line.430"></a>
-<span class="sourceLineNo">431</span> /**<a name="line.431"></a>
-<span class="sourceLineNo">432</span> * Objects from this class are created when flushing to describe all the different states that<a name="line.432"></a>
-<span class="sourceLineNo">433</span> * that method ends up in. The Result enum describes those states. The sequence id should only<a name="line.433"></a>
-<span class="sourceLineNo">434</span> * be specified if the flush was successful, and the failure message should only be specified<a name="line.434"></a>
-<span class="sourceLineNo">435</span> * if it didn't flush.<a name="line.435"></a>
-<span class="sourceLineNo">436</span> */<a name="line.436"></a>
-<span class="sourceLineNo">437</span> public static class FlushResultImpl implements FlushResult {<a name="line.437"></a>
-<span class="sourceLineNo">438</span> final Result result;<a name="line.438"></a>
-<span class="sourceLineNo">439</span> final String failureReason;<a name="line.439"></a>
-<span class="sourceLineNo">440</span> final long flushSequenceId;<a name="line.440"></a>
-<span class="sourceLineNo">441</span> final boolean wroteFlushWalMarker;<a name="line.441"></a>
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-<span class="sourceLineNo">443</span> /**<a name="line.443"></a>
-<span class="sourceLineNo">444</span> * Convenience constructor to use when the flush is successful, the failure message is set to<a name="line.444"></a>
-<span class="sourceLineNo">445</span> * null.<a name="line.445"></a>
-<span class="sourceLineNo">446</span> * @param result Expecting FLUSHED_NO_COMPACTION_NEEDED or FLUSHED_COMPACTION_NEEDED.<a name="line.446"></a>
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-<span class="sourceLineNo">448</span> * memstores.<a name="line.448"></a>
-<span class="sourceLineNo">449</span> */<a name="line.449"></a>
-<span class="sourceLineNo">450</span> FlushResultImpl(Result result, long flushSequenceId) {<a name="line.450"></a>
-<span class="sourceLineNo">451</span> this(result, flushSequenceId, null, false);<a name="line.451"></a>
-<span class="sourceLineNo">452</span> assert result == Result.FLUSHED_NO_COMPACTION_NEEDED || result == Result<a name="line.452"></a>
-<span class="sourceLineNo">453</span> .FLUSHED_COMPACTION_NEEDED;<a name="line.453"></a>
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-<span class="sourceLineNo">456</span> /**<a name="line.456"></a>
-<span class="sourceLineNo">457</span> * Convenience constructor to use when we cannot flush.<a name="line.457"></a>
-<span class="sourceLineNo">458</span> * @param result Expecting CANNOT_FLUSH_MEMSTORE_EMPTY or CANNOT_FLUSH.<a name="line.458"></a>
-<span class="sourceLineNo">459</span> * @param failureReason Reason why we couldn't flush.<a name="line.459"></a>
-<span class="sourceLineNo">460</span> */<a name="line.460"></a>
-<span class="sourceLineNo">461</span> FlushResultImpl(Result result, String failureReason, boolean wroteFlushMarker) {<a name="line.461"></a>
-<span class="sourceLineNo">462</span> this(result, -1, failureReason, wroteFlushMarker);<a name="line.462"></a>
-<span class="sourceLineNo">463</span> assert result == Result.CANNOT_FLUSH_MEMSTORE_EMPTY || result == Result.CANNOT_FLUSH;<a name="line.463"></a>
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-<span class="sourceLineNo">470</span> * @param failureReason Reason why we couldn't flush, or null.<a name="line.470"></a>
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-<span class="sourceLineNo">497</span> return result == Result.FLUSHED_COMPACTION_NEEDED;<a name="line.497"></a>
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-<span class="sourceLineNo">501</span> public String toString() {<a name="line.501"></a>
-<span class="sourceLineNo">502</span> return new StringBuilder()<a name="line.502"></a>
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-<span class="sourceLineNo">504</span> .append("failureReason:").append(failureReason).append(",")<a name="line.504"></a>
-<span class="sourceLineNo">505</span> .append("flush seq id").append(flushSequenceId).toString();<a name="line.505"></a>
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-<span class="sourceLineNo">515</span> @VisibleForTesting<a name="line.515"></a>
-<span class="sourceLineNo">516</span> static class PrepareFlushResult {<a name="line.516"></a>
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-<span class="sourceLineNo">518</span> final TreeMap<byte[], StoreFlushContext> storeFlushCtxs;<a name="line.518"></a>
-<span class="sourceLineNo">519</span> final TreeMap<byte[], List<Path>> committedFiles;<a name="line.519"></a>
-<span class="sourceLineNo">520</span> final TreeMap<byte[], Long> storeFlushableSize;<a name="line.520"></a>
-<span class="sourceLineNo">521</span> final long startTime;<a name="line.521"></a>
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