http://git-wip-us.apache.org/repos/asf/hbase-site/blob/6444c276/apidocs/src-html/org/apache/hadoop/hbase/mapreduce/TableInputFormatBase.html
----------------------------------------------------------------------
diff --git
a/apidocs/src-html/org/apache/hadoop/hbase/mapreduce/TableInputFormatBase.html
b/apidocs/src-html/org/apache/hadoop/hbase/mapreduce/TableInputFormatBase.html
index e36ae5f..7003255 100644
---
a/apidocs/src-html/org/apache/hadoop/hbase/mapreduce/TableInputFormatBase.html
+++
b/apidocs/src-html/org/apache/hadoop/hbase/mapreduce/TableInputFormatBase.html
@@ -283,384 +283,385 @@
<span class="sourceLineNo">275</span> if
(!includeRegionInSplit(keys.getFirst()[i], keys.getSecond()[i])) {<a
name="line.275"></a>
<span class="sourceLineNo">276</span> continue;<a name="line.276"></a>
<span class="sourceLineNo">277</span> }<a name="line.277"></a>
-<span class="sourceLineNo">278</span> HRegionLocation location =
getRegionLocator().getRegionLocation(keys.getFirst()[i], false);<a
name="line.278"></a>
-<span class="sourceLineNo">279</span> // The below InetSocketAddress
creation does a name resolution.<a name="line.279"></a>
-<span class="sourceLineNo">280</span> InetSocketAddress isa = new
InetSocketAddress(location.getHostname(), location.getPort());<a
name="line.280"></a>
-<span class="sourceLineNo">281</span> if (isa.isUnresolved()) {<a
name="line.281"></a>
-<span class="sourceLineNo">282</span> LOG.warn("Failed resolve " +
isa);<a name="line.282"></a>
-<span class="sourceLineNo">283</span> }<a name="line.283"></a>
-<span class="sourceLineNo">284</span> InetAddress regionAddress =
isa.getAddress();<a name="line.284"></a>
-<span class="sourceLineNo">285</span> String regionLocation;<a
name="line.285"></a>
-<span class="sourceLineNo">286</span> regionLocation =
reverseDNS(regionAddress);<a name="line.286"></a>
-<span class="sourceLineNo">287</span> <a name="line.287"></a>
-<span class="sourceLineNo">288</span> byte[] startRow =
scan.getStartRow();<a name="line.288"></a>
-<span class="sourceLineNo">289</span> byte[] stopRow =
scan.getStopRow();<a name="line.289"></a>
-<span class="sourceLineNo">290</span> // determine if the given start
an stop key fall into the region<a name="line.290"></a>
-<span class="sourceLineNo">291</span> if ((startRow.length == 0 ||
keys.getSecond()[i].length == 0 ||<a name="line.291"></a>
-<span class="sourceLineNo">292</span> Bytes.compareTo(startRow,
keys.getSecond()[i]) < 0) &&<a name="line.292"></a>
-<span class="sourceLineNo">293</span> (stopRow.length == 0 ||<a
name="line.293"></a>
-<span class="sourceLineNo">294</span> Bytes.compareTo(stopRow,
keys.getFirst()[i]) > 0)) {<a name="line.294"></a>
-<span class="sourceLineNo">295</span> byte[] splitStart =
startRow.length == 0 ||<a name="line.295"></a>
-<span class="sourceLineNo">296</span>
Bytes.compareTo(keys.getFirst()[i], startRow) >= 0 ?<a name="line.296"></a>
-<span class="sourceLineNo">297</span> keys.getFirst()[i] :
startRow;<a name="line.297"></a>
-<span class="sourceLineNo">298</span> byte[] splitStop =
(stopRow.length == 0 ||<a name="line.298"></a>
-<span class="sourceLineNo">299</span>
Bytes.compareTo(keys.getSecond()[i], stopRow) <= 0) &&<a
name="line.299"></a>
-<span class="sourceLineNo">300</span> keys.getSecond()[i].length
> 0 ?<a name="line.300"></a>
-<span class="sourceLineNo">301</span> keys.getSecond()[i] :
stopRow;<a name="line.301"></a>
-<span class="sourceLineNo">302</span> <a name="line.302"></a>
-<span class="sourceLineNo">303</span> byte[] regionName =
location.getRegionInfo().getRegionName();<a name="line.303"></a>
-<span class="sourceLineNo">304</span> String encodedRegionName =
location.getRegionInfo().getEncodedName();<a name="line.304"></a>
-<span class="sourceLineNo">305</span> long regionSize =
sizeCalculator.getRegionSize(regionName);<a name="line.305"></a>
-<span class="sourceLineNo">306</span> TableSplit split = new
TableSplit(tableName, scan,<a name="line.306"></a>
-<span class="sourceLineNo">307</span> splitStart, splitStop,
regionLocation, encodedRegionName, regionSize);<a name="line.307"></a>
-<span class="sourceLineNo">308</span> splits.add(split);<a
name="line.308"></a>
-<span class="sourceLineNo">309</span> if (LOG.isDebugEnabled()) {<a
name="line.309"></a>
-<span class="sourceLineNo">310</span> LOG.debug("getSplits: split
-> " + i + " -> " + split);<a name="line.310"></a>
-<span class="sourceLineNo">311</span> }<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> //The default value of
"hbase.mapreduce.input.autobalance" is false, which means not enabled.<a
name="line.314"></a>
-<span class="sourceLineNo">315</span> boolean enableAutoBalance =
context.getConfiguration()<a name="line.315"></a>
-<span class="sourceLineNo">316</span>
.getBoolean(MAPREDUCE_INPUT_AUTOBALANCE, false);<a name="line.316"></a>
-<span class="sourceLineNo">317</span> if (enableAutoBalance) {<a
name="line.317"></a>
-<span class="sourceLineNo">318</span> long totalRegionSize=0;<a
name="line.318"></a>
-<span class="sourceLineNo">319</span> for (int i = 0; i <
splits.size(); i++){<a name="line.319"></a>
-<span class="sourceLineNo">320</span> TableSplit ts =
(TableSplit)splits.get(i);<a name="line.320"></a>
-<span class="sourceLineNo">321</span> totalRegionSize +=
ts.getLength();<a name="line.321"></a>
-<span class="sourceLineNo">322</span> }<a name="line.322"></a>
-<span class="sourceLineNo">323</span> long averageRegionSize =
totalRegionSize / splits.size();<a name="line.323"></a>
-<span class="sourceLineNo">324</span> // the averageRegionSize must be
positive.<a name="line.324"></a>
-<span class="sourceLineNo">325</span> if (averageRegionSize <= 0)
{<a name="line.325"></a>
-<span class="sourceLineNo">326</span> LOG.warn("The
averageRegionSize is not positive: "+ averageRegionSize + ", " +<a
name="line.326"></a>
-<span class="sourceLineNo">327</span> "set it to 1.");<a
name="line.327"></a>
-<span class="sourceLineNo">328</span> averageRegionSize = 1;<a
name="line.328"></a>
-<span class="sourceLineNo">329</span> }<a name="line.329"></a>
-<span class="sourceLineNo">330</span> return
calculateRebalancedSplits(splits, context, averageRegionSize);<a
name="line.330"></a>
-<span class="sourceLineNo">331</span> } else {<a name="line.331"></a>
-<span class="sourceLineNo">332</span> return splits;<a
name="line.332"></a>
-<span class="sourceLineNo">333</span> }<a name="line.333"></a>
-<span class="sourceLineNo">334</span> } finally {<a name="line.334"></a>
-<span class="sourceLineNo">335</span> if (closeOnFinish) {<a
name="line.335"></a>
-<span class="sourceLineNo">336</span> closeTable();<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> }<a name="line.339"></a>
-<span class="sourceLineNo">340</span><a name="line.340"></a>
-<span class="sourceLineNo">341</span> String reverseDNS(InetAddress
ipAddress) throws UnknownHostException {<a name="line.341"></a>
-<span class="sourceLineNo">342</span> String hostName =
this.reverseDNSCacheMap.get(ipAddress);<a name="line.342"></a>
-<span class="sourceLineNo">343</span> if (hostName == null) {<a
name="line.343"></a>
-<span class="sourceLineNo">344</span> String ipAddressString = null;<a
name="line.344"></a>
-<span class="sourceLineNo">345</span> try {<a name="line.345"></a>
-<span class="sourceLineNo">346</span> ipAddressString =
DNS.reverseDns(ipAddress, null);<a name="line.346"></a>
-<span class="sourceLineNo">347</span> } catch (Exception e) {<a
name="line.347"></a>
-<span class="sourceLineNo">348</span> // We can use InetAddress in case
the jndi failed to pull up the reverse DNS entry from the<a name="line.348"></a>
-<span class="sourceLineNo">349</span> // name service. Also, in case of
ipv6, we need to use the InetAddress since resolving<a name="line.349"></a>
-<span class="sourceLineNo">350</span> // reverse DNS using jndi doesn't
work well with ipv6 addresses.<a name="line.350"></a>
-<span class="sourceLineNo">351</span> ipAddressString =
InetAddress.getByName(ipAddress.getHostAddress()).getHostName();<a
name="line.351"></a>
-<span class="sourceLineNo">352</span> }<a name="line.352"></a>
-<span class="sourceLineNo">353</span> if (ipAddressString == null) throw
new UnknownHostException("No host found for " + ipAddress);<a
name="line.353"></a>
-<span class="sourceLineNo">354</span> hostName =
Strings.domainNamePointerToHostName(ipAddressString);<a name="line.354"></a>
-<span class="sourceLineNo">355</span>
this.reverseDNSCacheMap.put(ipAddress, hostName);<a name="line.355"></a>
-<span class="sourceLineNo">356</span> }<a name="line.356"></a>
-<span class="sourceLineNo">357</span> return hostName;<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> /**<a name="line.360"></a>
-<span class="sourceLineNo">361</span> * Calculates the number of MapReduce
input splits for the map tasks. The number of<a name="line.361"></a>
-<span class="sourceLineNo">362</span> * MapReduce input splits depends on
the average region size and the "data skew ratio" user set in<a
name="line.362"></a>
-<span class="sourceLineNo">363</span> * configuration.<a name="line.363"></a>
-<span class="sourceLineNo">364</span> *<a name="line.364"></a>
-<span class="sourceLineNo">365</span> * @param list The list of input
splits before balance.<a name="line.365"></a>
-<span class="sourceLineNo">366</span> * @param context The current job
context.<a name="line.366"></a>
-<span class="sourceLineNo">367</span> * @param average The average size of
all regions .<a name="line.367"></a>
-<span class="sourceLineNo">368</span> * @return The list of input splits.<a
name="line.368"></a>
-<span class="sourceLineNo">369</span> * @throws IOException When creating
the list of splits fails.<a name="line.369"></a>
-<span class="sourceLineNo">370</span> * @see
org.apache.hadoop.mapreduce.InputFormat#getSplits(<a name="line.370"></a>
-<span class="sourceLineNo">371</span> *
org.apache.hadoop.mapreduce.JobContext)<a name="line.371"></a>
-<span class="sourceLineNo">372</span> */<a name="line.372"></a>
-<span class="sourceLineNo">373</span> private List<InputSplit>
calculateRebalancedSplits(List<InputSplit> list, JobContext context,<a
name="line.373"></a>
-<span class="sourceLineNo">374</span>
long average) throws IOException {<a name="line.374"></a>
-<span class="sourceLineNo">375</span> List<InputSplit> resultList =
new ArrayList<InputSplit>();<a name="line.375"></a>
-<span class="sourceLineNo">376</span> Configuration conf =
context.getConfiguration();<a name="line.376"></a>
-<span class="sourceLineNo">377</span> //The default data skew ratio is 3<a
name="line.377"></a>
-<span class="sourceLineNo">378</span> long dataSkewRatio =
conf.getLong(INPUT_AUTOBALANCE_MAXSKEWRATIO, 3);<a name="line.378"></a>
-<span class="sourceLineNo">379</span> //It determines which mode to use:
text key mode or binary key mode. The default is text mode.<a
name="line.379"></a>
-<span class="sourceLineNo">380</span> boolean isTextKey =
context.getConfiguration().getBoolean(TABLE_ROW_TEXTKEY, true);<a
name="line.380"></a>
-<span class="sourceLineNo">381</span> long dataSkewThreshold =
dataSkewRatio * average;<a name="line.381"></a>
-<span class="sourceLineNo">382</span> int count = 0;<a name="line.382"></a>
-<span class="sourceLineNo">383</span> while (count < list.size()) {<a
name="line.383"></a>
-<span class="sourceLineNo">384</span> TableSplit ts =
(TableSplit)list.get(count);<a name="line.384"></a>
-<span class="sourceLineNo">385</span> TableName tableName =
ts.getTable();<a name="line.385"></a>
-<span class="sourceLineNo">386</span> String regionLocation =
ts.getRegionLocation();<a name="line.386"></a>
-<span class="sourceLineNo">387</span> String encodedRegionName =
ts.getEncodedRegionName();<a name="line.387"></a>
-<span class="sourceLineNo">388</span> long regionSize = ts.getLength();<a
name="line.388"></a>
-<span class="sourceLineNo">389</span> if (regionSize >=
dataSkewThreshold) {<a name="line.389"></a>
-<span class="sourceLineNo">390</span> // if the current region size is
large than the data skew threshold,<a name="line.390"></a>
-<span class="sourceLineNo">391</span> // split the region into two
MapReduce input splits.<a name="line.391"></a>
-<span class="sourceLineNo">392</span> byte[] splitKey =
getSplitKey(ts.getStartRow(), ts.getEndRow(), isTextKey);<a name="line.392"></a>
-<span class="sourceLineNo">393</span> if (Arrays.equals(ts.getEndRow(),
splitKey)) {<a name="line.393"></a>
-<span class="sourceLineNo">394</span> // Not splitting since the end
key is the same as the split key<a name="line.394"></a>
-<span class="sourceLineNo">395</span> resultList.add(ts);<a
name="line.395"></a>
-<span class="sourceLineNo">396</span> } else {<a name="line.396"></a>
-<span class="sourceLineNo">397</span> //Set the size of child
TableSplit as 1/2 of the region size. The exact size of the<a
name="line.397"></a>
-<span class="sourceLineNo">398</span> // MapReduce input splits is
not far off.<a name="line.398"></a>
-<span class="sourceLineNo">399</span> TableSplit t1 = new
TableSplit(tableName, scan, ts.getStartRow(), splitKey,<a name="line.399"></a>
-<span class="sourceLineNo">400</span> regionLocation, regionSize
/ 2);<a name="line.400"></a>
-<span class="sourceLineNo">401</span> TableSplit t2 = new
TableSplit(tableName, scan, splitKey, ts.getEndRow(), regionLocation,<a
name="line.401"></a>
-<span class="sourceLineNo">402</span> regionSize - regionSize /
2);<a name="line.402"></a>
-<span class="sourceLineNo">403</span> resultList.add(t1);<a
name="line.403"></a>
-<span class="sourceLineNo">404</span> resultList.add(t2);<a
name="line.404"></a>
-<span class="sourceLineNo">405</span> }<a name="line.405"></a>
-<span class="sourceLineNo">406</span> count++;<a name="line.406"></a>
-<span class="sourceLineNo">407</span> } else if (regionSize >=
average) {<a name="line.407"></a>
-<span class="sourceLineNo">408</span> // if the region size between
average size and data skew threshold size,<a name="line.408"></a>
-<span class="sourceLineNo">409</span> // make this region as one
MapReduce input split.<a name="line.409"></a>
-<span class="sourceLineNo">410</span> resultList.add(ts);<a
name="line.410"></a>
-<span class="sourceLineNo">411</span> count++;<a name="line.411"></a>
-<span class="sourceLineNo">412</span> } else {<a name="line.412"></a>
-<span class="sourceLineNo">413</span> // if the total size of several
small continuous regions less than the average region size,<a
name="line.413"></a>
-<span class="sourceLineNo">414</span> // combine them into one
MapReduce input split.<a name="line.414"></a>
-<span class="sourceLineNo">415</span> long totalSize = regionSize;<a
name="line.415"></a>
-<span class="sourceLineNo">416</span> byte[] splitStartKey =
ts.getStartRow();<a name="line.416"></a>
-<span class="sourceLineNo">417</span> byte[] splitEndKey =
ts.getEndRow();<a name="line.417"></a>
-<span class="sourceLineNo">418</span> count++;<a name="line.418"></a>
-<span class="sourceLineNo">419</span> for (; count < list.size();
count++) {<a name="line.419"></a>
-<span class="sourceLineNo">420</span> TableSplit nextRegion =
(TableSplit)list.get(count);<a name="line.420"></a>
-<span class="sourceLineNo">421</span> long nextRegionSize =
nextRegion.getLength();<a name="line.421"></a>
-<span class="sourceLineNo">422</span> if (totalSize + nextRegionSize
<= dataSkewThreshold) {<a name="line.422"></a>
-<span class="sourceLineNo">423</span> totalSize = totalSize +
nextRegionSize;<a name="line.423"></a>
-<span class="sourceLineNo">424</span> splitEndKey =
nextRegion.getEndRow();<a name="line.424"></a>
-<span class="sourceLineNo">425</span> } else {<a name="line.425"></a>
-<span class="sourceLineNo">426</span> break;<a name="line.426"></a>
-<span class="sourceLineNo">427</span> }<a name="line.427"></a>
-<span class="sourceLineNo">428</span> }<a name="line.428"></a>
-<span class="sourceLineNo">429</span> TableSplit t = new
TableSplit(tableName, scan, splitStartKey, splitEndKey,<a name="line.429"></a>
-<span class="sourceLineNo">430</span> regionLocation,
encodedRegionName, totalSize);<a name="line.430"></a>
-<span class="sourceLineNo">431</span> resultList.add(t);<a
name="line.431"></a>
-<span class="sourceLineNo">432</span> }<a name="line.432"></a>
-<span class="sourceLineNo">433</span> }<a name="line.433"></a>
-<span class="sourceLineNo">434</span> return resultList;<a
name="line.434"></a>
-<span class="sourceLineNo">435</span> }<a name="line.435"></a>
-<span class="sourceLineNo">436</span><a name="line.436"></a>
-<span class="sourceLineNo">437</span> /**<a name="line.437"></a>
-<span class="sourceLineNo">438</span> * select a split point in the region.
The selection of the split point is based on an uniform<a name="line.438"></a>
-<span class="sourceLineNo">439</span> * distribution assumption for the keys
in a region.<a name="line.439"></a>
-<span class="sourceLineNo">440</span> * Here are some examples:<a
name="line.440"></a>
-<span class="sourceLineNo">441</span> *<a name="line.441"></a>
-<span class="sourceLineNo">442</span> * <table><a name="line.442"></a>
-<span class="sourceLineNo">443</span> * <tr><a name="line.443"></a>
-<span class="sourceLineNo">444</span> * <th>start key</th><a
name="line.444"></a>
-<span class="sourceLineNo">445</span> * <th>end key</th><a
name="line.445"></a>
-<span class="sourceLineNo">446</span> * <th>is text</th><a
name="line.446"></a>
-<span class="sourceLineNo">447</span> * <th>split
point</th><a name="line.447"></a>
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-<span class="sourceLineNo">449</span> * <tr><a name="line.449"></a>
-<span class="sourceLineNo">450</span> * <td>'a', 'a', 'a', 'b',
'c', 'd', 'e', 'f', 'g'</td><a name="line.450"></a>
-<span class="sourceLineNo">451</span> * <td>'a', 'a', 'a', 'f',
'f', 'f'</td><a name="line.451"></a>
-<span class="sourceLineNo">452</span> * <td>true</td><a
name="line.452"></a>
-<span class="sourceLineNo">453</span> * <td>'a', 'a', 'a', 'd',
'd', -78, 50, -77, 51</td><a name="line.453"></a>
-<span class="sourceLineNo">454</span> * </tr><a name="line.454"></a>
-<span class="sourceLineNo">455</span> * <tr><a name="line.455"></a>
-<span class="sourceLineNo">456</span> * <td>'1', '1', '1', '0',
'0', '0'</td><a name="line.456"></a>
-<span class="sourceLineNo">457</span> * <td>'1', '1', '2', '5',
'7', '9', '0'</td><a name="line.457"></a>
-<span class="sourceLineNo">458</span> * <td>true</td><a
name="line.458"></a>
-<span class="sourceLineNo">459</span> * <td>'1', '1', '1', -78,
-77, -76, -104</td><a name="line.459"></a>
-<span class="sourceLineNo">460</span> * </tr><a name="line.460"></a>
-<span class="sourceLineNo">461</span> * <tr><a name="line.461"></a>
-<span class="sourceLineNo">462</span> * <td>'1', '1', '1',
'0'</td><a name="line.462"></a>
-<span class="sourceLineNo">463</span> * <td>'1', '1', '2',
'0'</td><a name="line.463"></a>
-<span class="sourceLineNo">464</span> * <td>true</td><a
name="line.464"></a>
-<span class="sourceLineNo">465</span> * <td>'1', '1', '1',
-80</td><a name="line.465"></a>
-<span class="sourceLineNo">466</span> * </tr><a name="line.466"></a>
-<span class="sourceLineNo">467</span> * <tr><a name="line.467"></a>
-<span class="sourceLineNo">468</span> * <td>13, -19, 126,
127</td><a name="line.468"></a>
-<span class="sourceLineNo">469</span> * <td>13, -19, 127,
0</td><a name="line.469"></a>
-<span class="sourceLineNo">470</span> * <td>false</td><a
name="line.470"></a>
-<span class="sourceLineNo">471</span> * <td>13, -19, 126,
-65</td><a name="line.471"></a>
-<span class="sourceLineNo">472</span> * </tr><a name="line.472"></a>
-<span class="sourceLineNo">473</span> * </table><a name="line.473"></a>
-<span class="sourceLineNo">474</span> *<a name="line.474"></a>
-<span class="sourceLineNo">475</span> * Set this function as "public
static", make it easier for test.<a name="line.475"></a>
-<span class="sourceLineNo">476</span> *<a name="line.476"></a>
-<span class="sourceLineNo">477</span> * @param start Start key of the
region<a name="line.477"></a>
-<span class="sourceLineNo">478</span> * @param end End key of the region<a
name="line.478"></a>
-<span class="sourceLineNo">479</span> * @param isText It determines to use
text key mode or binary key mode<a name="line.479"></a>
-<span class="sourceLineNo">480</span> * @return The split point in the
region.<a name="line.480"></a>
-<span class="sourceLineNo">481</span> */<a name="line.481"></a>
-<span class="sourceLineNo">482</span> @InterfaceAudience.Private<a
name="line.482"></a>
-<span class="sourceLineNo">483</span> public static byte[] getSplitKey(byte[]
start, byte[] end, boolean isText) {<a name="line.483"></a>
-<span class="sourceLineNo">484</span> byte upperLimitByte;<a
name="line.484"></a>
-<span class="sourceLineNo">485</span> byte lowerLimitByte;<a
name="line.485"></a>
-<span class="sourceLineNo">486</span> //Use text mode or binary mode.<a
name="line.486"></a>
-<span class="sourceLineNo">487</span> if (isText) {<a name="line.487"></a>
-<span class="sourceLineNo">488</span> //The range of text char set in
ASCII is [32,126], the lower limit is space and the upper<a name="line.488"></a>
-<span class="sourceLineNo">489</span> // limit is '~'.<a
name="line.489"></a>
-<span class="sourceLineNo">490</span> upperLimitByte = '~';<a
name="line.490"></a>
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name="line.491"></a>
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name="line.493"></a>
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name="line.496"></a>
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endkey="hhhqqqwww", splitKey="h"<a name="line.497"></a>
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startKey="ffffaaa", endKey=null, splitkey="f~~~~~~"<a name="line.498"></a>
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start.length; k++){<a name="line.508"></a>
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name="line.511"></a>
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included in the InputSplit while splitting<a name="line.517"></a>
-<span class="sourceLineNo">518</span> * the regions of a table.<a
name="line.518"></a>
-<span class="sourceLineNo">519</span> * <p><a name="line.519"></a>
-<span class="sourceLineNo">520</span> * This optimization is effective when
there is a specific reasoning to exclude an entire region from the M-R job,<a
name="line.520"></a>
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InputSplit), given the start and end keys of the same. <br><a
name="line.521"></a>
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last-processed top record and revisit the [last, current) interval for M-R
processing,<a name="line.522"></a>
-<span class="sourceLineNo">523</span> * continuously. In addition to
reducing InputSplits, reduces the load on the region server as well, due to the
ordering of the keys.<a name="line.523"></a>
-<span class="sourceLineNo">524</span> * <br><a name="line.524"></a>
+<span class="sourceLineNo">278</span><a name="line.278"></a>
+<span class="sourceLineNo">279</span> byte[] startRow =
scan.getStartRow();<a name="line.279"></a>
+<span class="sourceLineNo">280</span> byte[] stopRow =
scan.getStopRow();<a name="line.280"></a>
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an stop key fall into the region<a name="line.281"></a>
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keys.getSecond()[i].length == 0 ||<a name="line.282"></a>
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keys.getSecond()[i]) < 0) &&<a name="line.283"></a>
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name="line.284"></a>
+<span class="sourceLineNo">285</span> Bytes.compareTo(stopRow,
keys.getFirst()[i]) > 0)) {<a name="line.285"></a>
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startRow.length == 0 ||<a name="line.286"></a>
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Bytes.compareTo(keys.getFirst()[i], startRow) >= 0 ?<a name="line.287"></a>
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startRow;<a name="line.288"></a>
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(stopRow.length == 0 ||<a name="line.289"></a>
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Bytes.compareTo(keys.getSecond()[i], stopRow) <= 0) &&<a
name="line.290"></a>
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> 0 ?<a name="line.291"></a>
+<span class="sourceLineNo">292</span> keys.getSecond()[i] :
stopRow;<a name="line.292"></a>
+<span class="sourceLineNo">293</span><a name="line.293"></a>
+<span class="sourceLineNo">294</span> HRegionLocation location =
getRegionLocator().getRegionLocation(keys.getFirst()[i], false);<a
name="line.294"></a>
+<span class="sourceLineNo">295</span> // The below InetSocketAddress
creation does a name resolution.<a name="line.295"></a>
+<span class="sourceLineNo">296</span> InetSocketAddress isa = new
InetSocketAddress(location.getHostname(), location.getPort());<a
name="line.296"></a>
+<span class="sourceLineNo">297</span> if (isa.isUnresolved()) {<a
name="line.297"></a>
+<span class="sourceLineNo">298</span> LOG.warn("Failed resolve " +
isa);<a name="line.298"></a>
+<span class="sourceLineNo">299</span> }<a name="line.299"></a>
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isa.getAddress();<a name="line.300"></a>
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name="line.301"></a>
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reverseDNS(regionAddress);<a name="line.302"></a>
+<span class="sourceLineNo">303</span><a name="line.303"></a>
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location.getRegionInfo().getRegionName();<a name="line.304"></a>
+<span class="sourceLineNo">305</span> String encodedRegionName =
location.getRegionInfo().getEncodedName();<a name="line.305"></a>
+<span class="sourceLineNo">306</span> long regionSize =
sizeCalculator.getRegionSize(regionName);<a name="line.306"></a>
+<span class="sourceLineNo">307</span> TableSplit split = new
TableSplit(tableName, scan,<a name="line.307"></a>
+<span class="sourceLineNo">308</span> splitStart, splitStop,
regionLocation, encodedRegionName, regionSize);<a name="line.308"></a>
+<span class="sourceLineNo">309</span> splits.add(split);<a
name="line.309"></a>
+<span class="sourceLineNo">310</span> if (LOG.isDebugEnabled()) {<a
name="line.310"></a>
+<span class="sourceLineNo">311</span> LOG.debug("getSplits: split
-> " + i + " -> " + split);<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> }<a name="line.314"></a>
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"hbase.mapreduce.input.autobalance" is false, which means not enabled.<a
name="line.315"></a>
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context.getConfiguration()<a name="line.316"></a>
+<span class="sourceLineNo">317</span>
.getBoolean(MAPREDUCE_INPUT_AUTOBALANCE, false);<a name="line.317"></a>
+<span class="sourceLineNo">318</span> if (enableAutoBalance) {<a
name="line.318"></a>
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name="line.319"></a>
+<span class="sourceLineNo">320</span> for (int i = 0; i <
splits.size(); i++){<a name="line.320"></a>
+<span class="sourceLineNo">321</span> TableSplit ts =
(TableSplit)splits.get(i);<a name="line.321"></a>
+<span class="sourceLineNo">322</span> totalRegionSize +=
ts.getLength();<a name="line.322"></a>
+<span class="sourceLineNo">323</span> }<a name="line.323"></a>
+<span class="sourceLineNo">324</span> long averageRegionSize =
totalRegionSize / splits.size();<a name="line.324"></a>
+<span class="sourceLineNo">325</span> // the averageRegionSize must be
positive.<a name="line.325"></a>
+<span class="sourceLineNo">326</span> if (averageRegionSize <= 0)
{<a name="line.326"></a>
+<span class="sourceLineNo">327</span> LOG.warn("The
averageRegionSize is not positive: "+ averageRegionSize + ", " +<a
name="line.327"></a>
+<span class="sourceLineNo">328</span> "set it to 1.");<a
name="line.328"></a>
+<span class="sourceLineNo">329</span> averageRegionSize = 1;<a
name="line.329"></a>
+<span class="sourceLineNo">330</span> }<a name="line.330"></a>
+<span class="sourceLineNo">331</span> return
calculateRebalancedSplits(splits, context, averageRegionSize);<a
name="line.331"></a>
+<span class="sourceLineNo">332</span> } else {<a name="line.332"></a>
+<span class="sourceLineNo">333</span> return splits;<a
name="line.333"></a>
+<span class="sourceLineNo">334</span> }<a name="line.334"></a>
+<span class="sourceLineNo">335</span> } finally {<a name="line.335"></a>
+<span class="sourceLineNo">336</span> if (closeOnFinish) {<a
name="line.336"></a>
+<span class="sourceLineNo">337</span> closeTable();<a
name="line.337"></a>
+<span class="sourceLineNo">338</span> }<a name="line.338"></a>
+<span class="sourceLineNo">339</span> }<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> String reverseDNS(InetAddress
ipAddress) throws UnknownHostException {<a name="line.342"></a>
+<span class="sourceLineNo">343</span> String hostName =
this.reverseDNSCacheMap.get(ipAddress);<a name="line.343"></a>
+<span class="sourceLineNo">344</span> if (hostName == null) {<a
name="line.344"></a>
+<span class="sourceLineNo">345</span> String ipAddressString = null;<a
name="line.345"></a>
+<span class="sourceLineNo">346</span> try {<a name="line.346"></a>
+<span class="sourceLineNo">347</span> ipAddressString =
DNS.reverseDns(ipAddress, null);<a name="line.347"></a>
+<span class="sourceLineNo">348</span> } catch (Exception e) {<a
name="line.348"></a>
+<span class="sourceLineNo">349</span> // We can use InetAddress in case
the jndi failed to pull up the reverse DNS entry from the<a name="line.349"></a>
+<span class="sourceLineNo">350</span> // name service. Also, in case of
ipv6, we need to use the InetAddress since resolving<a name="line.350"></a>
+<span class="sourceLineNo">351</span> // reverse DNS using jndi doesn't
work well with ipv6 addresses.<a name="line.351"></a>
+<span class="sourceLineNo">352</span> ipAddressString =
InetAddress.getByName(ipAddress.getHostAddress()).getHostName();<a
name="line.352"></a>
+<span class="sourceLineNo">353</span> }<a name="line.353"></a>
+<span class="sourceLineNo">354</span> if (ipAddressString == null) throw
new UnknownHostException("No host found for " + ipAddress);<a
name="line.354"></a>
+<span class="sourceLineNo">355</span> hostName =
Strings.domainNamePointerToHostName(ipAddressString);<a name="line.355"></a>
+<span class="sourceLineNo">356</span>
this.reverseDNSCacheMap.put(ipAddress, hostName);<a name="line.356"></a>
+<span class="sourceLineNo">357</span> }<a name="line.357"></a>
+<span class="sourceLineNo">358</span> return hostName;<a
name="line.358"></a>
+<span class="sourceLineNo">359</span> }<a name="line.359"></a>
+<span class="sourceLineNo">360</span><a name="line.360"></a>
+<span class="sourceLineNo">361</span> /**<a name="line.361"></a>
+<span class="sourceLineNo">362</span> * Calculates the number of MapReduce
input splits for the map tasks. The number of<a name="line.362"></a>
+<span class="sourceLineNo">363</span> * MapReduce input splits depends on
the average region size and the "data skew ratio" user set in<a
name="line.363"></a>
+<span class="sourceLineNo">364</span> * configuration.<a name="line.364"></a>
+<span class="sourceLineNo">365</span> *<a name="line.365"></a>
+<span class="sourceLineNo">366</span> * @param list The list of input
splits before balance.<a name="line.366"></a>
+<span class="sourceLineNo">367</span> * @param context The current job
context.<a name="line.367"></a>
+<span class="sourceLineNo">368</span> * @param average The average size of
all regions .<a name="line.368"></a>
+<span class="sourceLineNo">369</span> * @return The list of input splits.<a
name="line.369"></a>
+<span class="sourceLineNo">370</span> * @throws IOException When creating
the list of splits fails.<a name="line.370"></a>
+<span class="sourceLineNo">371</span> * @see
org.apache.hadoop.mapreduce.InputFormat#getSplits(<a name="line.371"></a>
+<span class="sourceLineNo">372</span> *
org.apache.hadoop.mapreduce.JobContext)<a name="line.372"></a>
+<span class="sourceLineNo">373</span> */<a name="line.373"></a>
+<span class="sourceLineNo">374</span> private List<InputSplit>
calculateRebalancedSplits(List<InputSplit> list, JobContext context,<a
name="line.374"></a>
+<span class="sourceLineNo">375</span>
long average) throws IOException {<a name="line.375"></a>
+<span class="sourceLineNo">376</span> List<InputSplit> resultList =
new ArrayList<InputSplit>();<a name="line.376"></a>
+<span class="sourceLineNo">377</span> Configuration conf =
context.getConfiguration();<a name="line.377"></a>
+<span class="sourceLineNo">378</span> //The default data skew ratio is 3<a
name="line.378"></a>
+<span class="sourceLineNo">379</span> long dataSkewRatio =
conf.getLong(INPUT_AUTOBALANCE_MAXSKEWRATIO, 3);<a name="line.379"></a>
+<span class="sourceLineNo">380</span> //It determines which mode to use:
text key mode or binary key mode. The default is text mode.<a
name="line.380"></a>
+<span class="sourceLineNo">381</span> boolean isTextKey =
context.getConfiguration().getBoolean(TABLE_ROW_TEXTKEY, true);<a
name="line.381"></a>
+<span class="sourceLineNo">382</span> long dataSkewThreshold =
dataSkewRatio * average;<a name="line.382"></a>
+<span class="sourceLineNo">383</span> int count = 0;<a name="line.383"></a>
+<span class="sourceLineNo">384</span> while (count < list.size()) {<a
name="line.384"></a>
+<span class="sourceLineNo">385</span> TableSplit ts =
(TableSplit)list.get(count);<a name="line.385"></a>
+<span class="sourceLineNo">386</span> TableName tableName =
ts.getTable();<a name="line.386"></a>
+<span class="sourceLineNo">387</span> String regionLocation =
ts.getRegionLocation();<a name="line.387"></a>
+<span class="sourceLineNo">388</span> String encodedRegionName =
ts.getEncodedRegionName();<a name="line.388"></a>
+<span class="sourceLineNo">389</span> long regionSize = ts.getLength();<a
name="line.389"></a>
+<span class="sourceLineNo">390</span> if (regionSize >=
dataSkewThreshold) {<a name="line.390"></a>
+<span class="sourceLineNo">391</span> // if the current region size is
large than the data skew threshold,<a name="line.391"></a>
+<span class="sourceLineNo">392</span> // split the region into two
MapReduce input splits.<a name="line.392"></a>
+<span class="sourceLineNo">393</span> byte[] splitKey =
getSplitKey(ts.getStartRow(), ts.getEndRow(), isTextKey);<a name="line.393"></a>
+<span class="sourceLineNo">394</span> if (Arrays.equals(ts.getEndRow(),
splitKey)) {<a name="line.394"></a>
+<span class="sourceLineNo">395</span> // Not splitting since the end
key is the same as the split key<a name="line.395"></a>
+<span class="sourceLineNo">396</span> resultList.add(ts);<a
name="line.396"></a>
+<span class="sourceLineNo">397</span> } else {<a name="line.397"></a>
+<span class="sourceLineNo">398</span> //Set the size of child
TableSplit as 1/2 of the region size. The exact size of the<a
name="line.398"></a>
+<span class="sourceLineNo">399</span> // MapReduce input splits is
not far off.<a name="line.399"></a>
+<span class="sourceLineNo">400</span> TableSplit t1 = new
TableSplit(tableName, scan, ts.getStartRow(), splitKey,<a name="line.400"></a>
+<span class="sourceLineNo">401</span> regionLocation, regionSize
/ 2);<a name="line.401"></a>
+<span class="sourceLineNo">402</span> TableSplit t2 = new
TableSplit(tableName, scan, splitKey, ts.getEndRow(), regionLocation,<a
name="line.402"></a>
+<span class="sourceLineNo">403</span> regionSize - regionSize /
2);<a name="line.403"></a>
+<span class="sourceLineNo">404</span> resultList.add(t1);<a
name="line.404"></a>
+<span class="sourceLineNo">405</span> resultList.add(t2);<a
name="line.405"></a>
+<span class="sourceLineNo">406</span> }<a name="line.406"></a>
+<span class="sourceLineNo">407</span> count++;<a name="line.407"></a>
+<span class="sourceLineNo">408</span> } else if (regionSize >=
average) {<a name="line.408"></a>
+<span class="sourceLineNo">409</span> // if the region size between
average size and data skew threshold size,<a name="line.409"></a>
+<span class="sourceLineNo">410</span> // make this region as one
MapReduce input split.<a name="line.410"></a>
+<span class="sourceLineNo">411</span> resultList.add(ts);<a
name="line.411"></a>
+<span class="sourceLineNo">412</span> count++;<a name="line.412"></a>
+<span class="sourceLineNo">413</span> } else {<a name="line.413"></a>
+<span class="sourceLineNo">414</span> // if the total size of several
small continuous regions less than the average region size,<a
name="line.414"></a>
+<span class="sourceLineNo">415</span> // combine them into one
MapReduce input split.<a name="line.415"></a>
+<span class="sourceLineNo">416</span> long totalSize = regionSize;<a
name="line.416"></a>
+<span class="sourceLineNo">417</span> byte[] splitStartKey =
ts.getStartRow();<a name="line.417"></a>
+<span class="sourceLineNo">418</span> byte[] splitEndKey =
ts.getEndRow();<a name="line.418"></a>
+<span class="sourceLineNo">419</span> count++;<a name="line.419"></a>
+<span class="sourceLineNo">420</span> for (; count < list.size();
count++) {<a name="line.420"></a>
+<span class="sourceLineNo">421</span> TableSplit nextRegion =
(TableSplit)list.get(count);<a name="line.421"></a>
+<span class="sourceLineNo">422</span> long nextRegionSize =
nextRegion.getLength();<a name="line.422"></a>
+<span class="sourceLineNo">423</span> if (totalSize + nextRegionSize
<= dataSkewThreshold) {<a name="line.423"></a>
+<span class="sourceLineNo">424</span> totalSize = totalSize +
nextRegionSize;<a name="line.424"></a>
+<span class="sourceLineNo">425</span> splitEndKey =
nextRegion.getEndRow();<a name="line.425"></a>
+<span class="sourceLineNo">426</span> } else {<a name="line.426"></a>
+<span class="sourceLineNo">427</span> break;<a name="line.427"></a>
+<span class="sourceLineNo">428</span> }<a name="line.428"></a>
+<span class="sourceLineNo">429</span> }<a name="line.429"></a>
+<span class="sourceLineNo">430</span> TableSplit t = new
TableSplit(tableName, scan, splitStartKey, splitEndKey,<a name="line.430"></a>
+<span class="sourceLineNo">431</span> regionLocation,
encodedRegionName, totalSize);<a name="line.431"></a>
+<span class="sourceLineNo">432</span> resultList.add(t);<a
name="line.432"></a>
+<span class="sourceLineNo">433</span> }<a name="line.433"></a>
+<span class="sourceLineNo">434</span> }<a name="line.434"></a>
+<span class="sourceLineNo">435</span> return resultList;<a
name="line.435"></a>
+<span class="sourceLineNo">436</span> }<a name="line.436"></a>
+<span class="sourceLineNo">437</span><a name="line.437"></a>
+<span class="sourceLineNo">438</span> /**<a name="line.438"></a>
+<span class="sourceLineNo">439</span> * select a split point in the region.
The selection of the split point is based on an uniform<a name="line.439"></a>
+<span class="sourceLineNo">440</span> * distribution assumption for the keys
in a region.<a name="line.440"></a>
+<span class="sourceLineNo">441</span> * Here are some examples:<a
name="line.441"></a>
+<span class="sourceLineNo">442</span> *<a name="line.442"></a>
+<span class="sourceLineNo">443</span> * <table><a name="line.443"></a>
+<span class="sourceLineNo">444</span> * <tr><a name="line.444"></a>
+<span class="sourceLineNo">445</span> * <th>start key</th><a
name="line.445"></a>
+<span class="sourceLineNo">446</span> * <th>end key</th><a
name="line.446"></a>
+<span class="sourceLineNo">447</span> * <th>is text</th><a
name="line.447"></a>
+<span class="sourceLineNo">448</span> * <th>split
point</th><a name="line.448"></a>
+<span class="sourceLineNo">449</span> * </tr><a name="line.449"></a>
+<span class="sourceLineNo">450</span> * <tr><a name="line.450"></a>
+<span class="sourceLineNo">451</span> * <td>'a', 'a', 'a', 'b',
'c', 'd', 'e', 'f', 'g'</td><a name="line.451"></a>
+<span class="sourceLineNo">452</span> * <td>'a', 'a', 'a', 'f',
'f', 'f'</td><a name="line.452"></a>
+<span class="sourceLineNo">453</span> * <td>true</td><a
name="line.453"></a>
+<span class="sourceLineNo">454</span> * <td>'a', 'a', 'a', 'd',
'd', -78, 50, -77, 51</td><a name="line.454"></a>
+<span class="sourceLineNo">455</span> * </tr><a name="line.455"></a>
+<span class="sourceLineNo">456</span> * <tr><a name="line.456"></a>
+<span class="sourceLineNo">457</span> * <td>'1', '1', '1', '0',
'0', '0'</td><a name="line.457"></a>
+<span class="sourceLineNo">458</span> * <td>'1', '1', '2', '5',
'7', '9', '0'</td><a name="line.458"></a>
+<span class="sourceLineNo">459</span> * <td>true</td><a
name="line.459"></a>
+<span class="sourceLineNo">460</span> * <td>'1', '1', '1', -78,
-77, -76, -104</td><a name="line.460"></a>
+<span class="sourceLineNo">461</span> * </tr><a name="line.461"></a>
+<span class="sourceLineNo">462</span> * <tr><a name="line.462"></a>
+<span class="sourceLineNo">463</span> * <td>'1', '1', '1',
'0'</td><a name="line.463"></a>
+<span class="sourceLineNo">464</span> * <td>'1', '1', '2',
'0'</td><a name="line.464"></a>
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this.connection != null) {<a name="line.579"></a>
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multiple times. Overwriting connection and table " +<a name="line.580"></a>
+<span class="sourceLineNo">581</span> "reference;
TableInputFormatBase will not close these old references when done.");<a
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connection.getTable(tableName);<a name="line.583"></a>
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connection.getRegionLocator(tableName);<a name="line.584"></a>
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+<span class="sourceLineNo">588</span><a name="line.588"></a>
+<span class="sourceLineNo">589</span> /**<a name="line.589"></a>
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details like columns etc.<a name="line.590"></a>
+<span class="sourceLineNo">591</span> *<a name="line.591"></a>
+<span class="sourceLineNo">592</span> * @return The internal scan
instance.<a name="line.592"></a>
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name="line.594"></a>
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new Scan();<a name="line.595"></a>
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+<span class="sourceLineNo">597</span> }<a name="line.597"></a>
+<span class="sourceLineNo">598</span><a name="line.598"></a>
+<span class="sourceLineNo">599</span> /**<a name="line.599"></a>
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details like columns etc.<a name="line.600"></a>
+<span class="sourceLineNo">601</span> *<a name="line.601"></a>
+<span class="sourceLineNo">602</span> * @param scan The scan to set.<a
name="line.602"></a>
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+<span class="sourceLineNo">606</span> }<a name="line.606"></a>
+<span class="sourceLineNo">607</span><a name="line.607"></a>
+<span class="sourceLineNo">608</span> /**<a name="line.608"></a>
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TableRecordReader}.<a name="line.609"></a>
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{@link TableRecordReader}<a name="line.611"></a>
+<span class="sourceLineNo">612</span> * implementation.<a
name="line.612"></a>
+<span class="sourceLineNo">613</span> */<a name="line.613"></a>
+<span class="sourceLineNo">614</span> protected void
setTableRecordReader(TableRecordReader tableRecordReader) {<a
name="line.614"></a>
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tableRecordReader;<a name="line.615"></a>
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+<span class="sourceLineNo">617</span> <a name="line.617"></a>
+<span class="sourceLineNo">618</span> /**<a name="line.618"></a>
+<span class="sourceLineNo">619</span> * Handle subclass specific set up.<a
name="line.619"></a>
+<span class="sourceLineNo">620</span> * Each of the entry points used by the
MapReduce framework,<a name="line.620"></a>
+<span class="sourceLineNo">621</span> * {@link
#createRecordReader(InputSplit, TaskAttemptContext)} and {@link
#getSplits(JobContext)},<a name="line.621"></a>
+<span class="sourceLineNo">622</span> * will call {@link
#initialize(JobContext)} as a convenient centralized location to handle<a
name="line.622"></a>
+<span class="sourceLineNo">623</span> * retrieving the necessary
configuration information and calling<a name="line.623"></a>
+<span class="sourceLineNo">624</span> * {@link #initializeTable(Connection,
TableName)}.<a name="line.624"></a>
+<span class="sourceLineNo">625</span> *<a name="line.625"></a>
+<span class="sourceLineNo">626</span> * Subclasses should implement their
initialize call such that it is safe to call multiple times.<a
name="line.626"></a>
+<span class="sourceLineNo">627</span> * The current TableInputFormatBase
implementation relies on a non-null table reference to decide<a
name="line.627"></a>
+<span class="sourceLineNo">628</span> * if an initialize call is needed, but
this behavior may change in the future. In particular,<a name="line.628"></a>
+<span class="sourceLineNo">629</span> * it is critical that initializeTable
not be called multiple times since this will leak<a name="line.629"></a>
+<span class="sourceLineNo">630</span> * Connection instances.<a
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+<span class="sourceLineNo">631</span> *<a name="line.631"></a>
+<span class="sourceLineNo">632</span> */<a name="line.632"></a>
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context) throws IOException {<a name="line.633"></a>
+<span class="sourceLineNo">634</span> }<a name="line.634"></a>
+<span class="sourceLineNo">635</span><a name="line.635"></a>
+<span class="sourceLineNo">636</span> /**<a name="line.636"></a>
+<span class="sourceLineNo">637</span> * Close the Table and related objects
that were initialized via<a name="line.637"></a>
+<span class="sourceLineNo">638</span> * {@link #initializeTable(Connection,
TableName)}.<a name="line.638"></a>
+<span class="sourceLineNo">639</span> *<a name="line.639"></a>
+<span class="sourceLineNo">640</span> * @throws IOException<a
name="line.640"></a>
+<span class="sourceLineNo">641</span> */<a name="line.641"></a>
+<span class="sourceLineNo">642</span> protected void closeTable() throws
IOException {<a name="line.642"></a>
+<span class="sourceLineNo">643</span> close(admin, table, regionLocator,
connection);<a name="line.643"></a>
+<span class="sourceLineNo">644</span> admin = null;<a name="line.644"></a>
+<span class="sourceLineNo">645</span> table = null;<a name="line.645"></a>
+<span class="sourceLineNo">646</span> regionLocator = null;<a
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+<span class="sourceLineNo">647</span> connection = null;<a
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+<span class="sourceLineNo">648</span> }<a name="line.648"></a>
+<span class="sourceLineNo">649</span><a name="line.649"></a>
+<span class="sourceLineNo">650</span> private void close(Closeable...
closables) throws IOException {<a name="line.650"></a>
+<span class="sourceLineNo">651</span> for (Closeable c : closables) {<a
name="line.651"></a>
+<span class="sourceLineNo">652</span> if(c != null) { c.close(); }<a
name="line.652"></a>
+<span class="sourceLineNo">653</span> }<a name="line.653"></a>
+<span class="sourceLineNo">654</span> }<a name="line.654"></a>
+<span class="sourceLineNo">655</span><a name="line.655"></a>
+<span class="sourceLineNo">656</span>}<a name="line.656"></a>