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From st...@apache.org
Subject [25/35] hbase-site git commit: Published site at 9250bf809155ebe93fd6ae8a0485b22c744fdf70.
Date Tue, 15 Nov 2016 05:46:16 GMT
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/f17356a7/devapidocs/src-html/org/apache/hadoop/hbase/mapreduce/LoadIncrementalHFiles.BulkHFileVisitor.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/mapreduce/LoadIncrementalHFiles.BulkHFileVisitor.html b/devapidocs/src-html/org/apache/hadoop/hbase/mapreduce/LoadIncrementalHFiles.BulkHFileVisitor.html
index 6d25806..55fa666 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/mapreduce/LoadIncrementalHFiles.BulkHFileVisitor.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/mapreduce/LoadIncrementalHFiles.BulkHFileVisitor.html
@@ -370,12 +370,12 @@
 <span class="sourceLineNo">362</span>   * @param regionLocator region locator<a name="line.362"></a>
 <span class="sourceLineNo">363</span>   * @param silence true to ignore unmatched column families<a name="line.363"></a>
 <span class="sourceLineNo">364</span>   * @param copyFile always copy hfiles if true<a name="line.364"></a>
-<span class="sourceLineNo">365</span>   * @return List of filenames which were not found<a name="line.365"></a>
+<span class="sourceLineNo">365</span>   * @return Map of LoadQueueItem to region<a name="line.365"></a>
 <span class="sourceLineNo">366</span>   * @throws TableNotFoundException if table does not yet exist<a name="line.366"></a>
 <span class="sourceLineNo">367</span>   */<a name="line.367"></a>
-<span class="sourceLineNo">368</span>  public List&lt;String&gt; doBulkLoad(Map&lt;byte[], List&lt;Path&gt;&gt; map, final Admin admin, Table table,<a name="line.368"></a>
-<span class="sourceLineNo">369</span>          RegionLocator regionLocator, boolean silence, boolean copyFile)<a name="line.369"></a>
-<span class="sourceLineNo">370</span>              throws TableNotFoundException, IOException {<a name="line.370"></a>
+<span class="sourceLineNo">368</span>  public Map&lt;LoadQueueItem, ByteBuffer&gt; doBulkLoad(Map&lt;byte[], List&lt;Path&gt;&gt; map, final Admin admin,<a name="line.368"></a>
+<span class="sourceLineNo">369</span>      Table table, RegionLocator regionLocator, boolean silence, boolean copyFile)<a name="line.369"></a>
+<span class="sourceLineNo">370</span>          throws TableNotFoundException, IOException {<a name="line.370"></a>
 <span class="sourceLineNo">371</span>    if (!admin.isTableAvailable(regionLocator.getName())) {<a name="line.371"></a>
 <span class="sourceLineNo">372</span>      throw new TableNotFoundException("Table " + table.getName() + " is not currently available.");<a name="line.372"></a>
 <span class="sourceLineNo">373</span>    }<a name="line.373"></a>
@@ -457,8 +457,8 @@
 <span class="sourceLineNo">449</span>    }<a name="line.449"></a>
 <span class="sourceLineNo">450</span>  }<a name="line.450"></a>
 <span class="sourceLineNo">451</span><a name="line.451"></a>
-<span class="sourceLineNo">452</span>  List&lt;String&gt; performBulkLoad(final Admin admin, Table table, RegionLocator regionLocator,<a name="line.452"></a>
-<span class="sourceLineNo">453</span>      Deque&lt;LoadQueueItem&gt; queue, ExecutorService pool,<a name="line.453"></a>
+<span class="sourceLineNo">452</span>  Map&lt;LoadQueueItem, ByteBuffer&gt; performBulkLoad(final Admin admin, Table table,<a name="line.452"></a>
+<span class="sourceLineNo">453</span>      RegionLocator regionLocator, Deque&lt;LoadQueueItem&gt; queue, ExecutorService pool,<a name="line.453"></a>
 <span class="sourceLineNo">454</span>      SecureBulkLoadClient secureClient, boolean copyFile) throws IOException {<a name="line.454"></a>
 <span class="sourceLineNo">455</span>    int count = 0;<a name="line.455"></a>
 <span class="sourceLineNo">456</span><a name="line.456"></a>
@@ -472,802 +472,815 @@
 <span class="sourceLineNo">464</span>    // fs is the source filesystem<a name="line.464"></a>
 <span class="sourceLineNo">465</span>    fsDelegationToken.acquireDelegationToken(fs);<a name="line.465"></a>
 <span class="sourceLineNo">466</span>    bulkToken = secureClient.prepareBulkLoad(admin.getConnection());<a name="line.466"></a>
-<span class="sourceLineNo">467</span>    Pair&lt;Multimap&lt;ByteBuffer, LoadQueueItem&gt;, List&lt;String&gt;&gt; pair = null;<a name="line.467"></a>
+<span class="sourceLineNo">467</span>    Pair&lt;Multimap&lt;ByteBuffer, LoadQueueItem&gt;, Set&lt;String&gt;&gt; pair = null;<a name="line.467"></a>
 <span class="sourceLineNo">468</span><a name="line.468"></a>
-<span class="sourceLineNo">469</span>    // Assumes that region splits can happen while this occurs.<a name="line.469"></a>
-<span class="sourceLineNo">470</span>    while (!queue.isEmpty()) {<a name="line.470"></a>
-<span class="sourceLineNo">471</span>      // need to reload split keys each iteration.<a name="line.471"></a>
-<span class="sourceLineNo">472</span>      final Pair&lt;byte[][], byte[][]&gt; startEndKeys = regionLocator.getStartEndKeys();<a name="line.472"></a>
-<span class="sourceLineNo">473</span>      if (count != 0) {<a name="line.473"></a>
-<span class="sourceLineNo">474</span>        LOG.info("Split occured while grouping HFiles, retry attempt " +<a name="line.474"></a>
-<span class="sourceLineNo">475</span>            + count + " with " + queue.size() + " files remaining to group or split");<a name="line.475"></a>
-<span class="sourceLineNo">476</span>      }<a name="line.476"></a>
-<span class="sourceLineNo">477</span><a name="line.477"></a>
-<span class="sourceLineNo">478</span>      int maxRetries = getConf().getInt(HConstants.BULKLOAD_MAX_RETRIES_NUMBER, 10);<a name="line.478"></a>
-<span class="sourceLineNo">479</span>      maxRetries = Math.max(maxRetries, startEndKeys.getFirst().length + 1);<a name="line.479"></a>
-<span class="sourceLineNo">480</span>      if (maxRetries != 0 &amp;&amp; count &gt;= maxRetries) {<a name="line.480"></a>
-<span class="sourceLineNo">481</span>        throw new IOException("Retry attempted " + count +<a name="line.481"></a>
-<span class="sourceLineNo">482</span>            " times without completing, bailing out");<a name="line.482"></a>
-<span class="sourceLineNo">483</span>      }<a name="line.483"></a>
-<span class="sourceLineNo">484</span>      count++;<a name="line.484"></a>
-<span class="sourceLineNo">485</span><a name="line.485"></a>
-<span class="sourceLineNo">486</span>      // Using ByteBuffer for byte[] equality semantics<a name="line.486"></a>
-<span class="sourceLineNo">487</span>      pair = groupOrSplitPhase(table, pool, queue, startEndKeys);<a name="line.487"></a>
-<span class="sourceLineNo">488</span>      Multimap&lt;ByteBuffer, LoadQueueItem&gt; regionGroups = pair.getFirst();<a name="line.488"></a>
-<span class="sourceLineNo">489</span><a name="line.489"></a>
-<span class="sourceLineNo">490</span>      if (!checkHFilesCountPerRegionPerFamily(regionGroups)) {<a name="line.490"></a>
-<span class="sourceLineNo">491</span>        // Error is logged inside checkHFilesCountPerRegionPerFamily.<a name="line.491"></a>
-<span class="sourceLineNo">492</span>        throw new IOException("Trying to load more than " + maxFilesPerRegionPerFamily<a name="line.492"></a>
-<span class="sourceLineNo">493</span>            + " hfiles to one family of one region");<a name="line.493"></a>
-<span class="sourceLineNo">494</span>      }<a name="line.494"></a>
-<span class="sourceLineNo">495</span><a name="line.495"></a>
-<span class="sourceLineNo">496</span>      bulkLoadPhase(table, admin.getConnection(), pool, queue, regionGroups, copyFile);<a name="line.496"></a>
-<span class="sourceLineNo">497</span><a name="line.497"></a>
-<span class="sourceLineNo">498</span>      // NOTE: The next iteration's split / group could happen in parallel to<a name="line.498"></a>
-<span class="sourceLineNo">499</span>      // atomic bulkloads assuming that there are splits and no merges, and<a name="line.499"></a>
-<span class="sourceLineNo">500</span>      // that we can atomically pull out the groups we want to retry.<a name="line.500"></a>
-<span class="sourceLineNo">501</span>    }<a name="line.501"></a>
-<span class="sourceLineNo">502</span><a name="line.502"></a>
-<span class="sourceLineNo">503</span>    if (!queue.isEmpty()) {<a name="line.503"></a>
-<span class="sourceLineNo">504</span>      throw new RuntimeException("Bulk load aborted with some files not yet loaded."<a name="line.504"></a>
-<span class="sourceLineNo">505</span>        + "Please check log for more details.");<a name="line.505"></a>
-<span class="sourceLineNo">506</span>    }<a name="line.506"></a>
-<span class="sourceLineNo">507</span>    if (pair == null) return null;<a name="line.507"></a>
-<span class="sourceLineNo">508</span>    return pair.getSecond();<a name="line.508"></a>
-<span class="sourceLineNo">509</span>  }<a name="line.509"></a>
-<span class="sourceLineNo">510</span><a name="line.510"></a>
-<span class="sourceLineNo">511</span>  /**<a name="line.511"></a>
-<span class="sourceLineNo">512</span>   * Prepare a collection of {@link LoadQueueItem} from list of source hfiles contained in the<a name="line.512"></a>
-<span class="sourceLineNo">513</span>   * passed directory and validates whether the prepared queue has all the valid table column<a name="line.513"></a>
-<span class="sourceLineNo">514</span>   * families in it.<a name="line.514"></a>
-<span class="sourceLineNo">515</span>   * @param hfilesDir directory containing list of hfiles to be loaded into the table<a name="line.515"></a>
-<span class="sourceLineNo">516</span>   * @param table table to which hfiles should be loaded<a name="line.516"></a>
-<span class="sourceLineNo">517</span>   * @param queue queue which needs to be loaded into the table<a name="line.517"></a>
-<span class="sourceLineNo">518</span>   * @param validateHFile if true hfiles will be validated for its format<a name="line.518"></a>
-<span class="sourceLineNo">519</span>   * @throws IOException If any I/O or network error occurred<a name="line.519"></a>
-<span class="sourceLineNo">520</span>   */<a name="line.520"></a>
-<span class="sourceLineNo">521</span>  public void prepareHFileQueue(Path hfilesDir, Table table, Deque&lt;LoadQueueItem&gt; queue,<a name="line.521"></a>
-<span class="sourceLineNo">522</span>      boolean validateHFile) throws IOException {<a name="line.522"></a>
-<span class="sourceLineNo">523</span>    prepareHFileQueue(hfilesDir, table, queue, validateHFile, false);<a name="line.523"></a>
-<span class="sourceLineNo">524</span>  }<a name="line.524"></a>
-<span class="sourceLineNo">525</span><a name="line.525"></a>
-<span class="sourceLineNo">526</span>  /**<a name="line.526"></a>
-<span class="sourceLineNo">527</span>   * Prepare a collection of {@link LoadQueueItem} from list of source hfiles contained in the<a name="line.527"></a>
-<span class="sourceLineNo">528</span>   * passed directory and validates whether the prepared queue has all the valid table column<a name="line.528"></a>
-<span class="sourceLineNo">529</span>   * families in it.<a name="line.529"></a>
-<span class="sourceLineNo">530</span>   * @param hfilesDir directory containing list of hfiles to be loaded into the table<a name="line.530"></a>
-<span class="sourceLineNo">531</span>   * @param table table to which hfiles should be loaded<a name="line.531"></a>
-<span class="sourceLineNo">532</span>   * @param queue queue which needs to be loaded into the table<a name="line.532"></a>
-<span class="sourceLineNo">533</span>   * @param validateHFile if true hfiles will be validated for its format<a name="line.533"></a>
-<span class="sourceLineNo">534</span>   * @param silence  true to ignore unmatched column families<a name="line.534"></a>
-<span class="sourceLineNo">535</span>   * @throws IOException If any I/O or network error occurred<a name="line.535"></a>
-<span class="sourceLineNo">536</span>   */<a name="line.536"></a>
-<span class="sourceLineNo">537</span>  public void prepareHFileQueue(Path hfilesDir, Table table,<a name="line.537"></a>
-<span class="sourceLineNo">538</span>      Deque&lt;LoadQueueItem&gt; queue, boolean validateHFile, boolean silence) throws IOException {<a name="line.538"></a>
-<span class="sourceLineNo">539</span>    discoverLoadQueue(queue, hfilesDir, validateHFile);<a name="line.539"></a>
-<span class="sourceLineNo">540</span>    validateFamiliesInHFiles(table, queue, silence);<a name="line.540"></a>
-<span class="sourceLineNo">541</span>  }<a name="line.541"></a>
-<span class="sourceLineNo">542</span><a name="line.542"></a>
-<span class="sourceLineNo">543</span>  /**<a name="line.543"></a>
-<span class="sourceLineNo">544</span>   * Prepare a collection of {@link LoadQueueItem} from list of source hfiles contained in the<a name="line.544"></a>
-<span class="sourceLineNo">545</span>   * passed directory and validates whether the prepared queue has all the valid table column<a name="line.545"></a>
-<span class="sourceLineNo">546</span>   * families in it.<a name="line.546"></a>
-<span class="sourceLineNo">547</span>   * @param map map of family to List of hfiles<a name="line.547"></a>
-<span class="sourceLineNo">548</span>   * @param table table to which hfiles should be loaded<a name="line.548"></a>
-<span class="sourceLineNo">549</span>   * @param queue queue which needs to be loaded into the table<a name="line.549"></a>
-<span class="sourceLineNo">550</span>   * @param silence  true to ignore unmatched column families<a name="line.550"></a>
-<span class="sourceLineNo">551</span>   * @throws IOException If any I/O or network error occurred<a name="line.551"></a>
-<span class="sourceLineNo">552</span>   */<a name="line.552"></a>
-<span class="sourceLineNo">553</span>  public void prepareHFileQueue(Map&lt;byte[], List&lt;Path&gt;&gt; map, Table table,<a name="line.553"></a>
-<span class="sourceLineNo">554</span>      Deque&lt;LoadQueueItem&gt; queue, boolean silence) throws IOException {<a name="line.554"></a>
-<span class="sourceLineNo">555</span>    populateLoadQueue(queue, map);<a name="line.555"></a>
-<span class="sourceLineNo">556</span>    validateFamiliesInHFiles(table, queue, silence);<a name="line.556"></a>
-<span class="sourceLineNo">557</span>  }<a name="line.557"></a>
-<span class="sourceLineNo">558</span><a name="line.558"></a>
-<span class="sourceLineNo">559</span>  // Initialize a thread pool<a name="line.559"></a>
-<span class="sourceLineNo">560</span>  private ExecutorService createExecutorService() {<a name="line.560"></a>
-<span class="sourceLineNo">561</span>    ThreadFactoryBuilder builder = new ThreadFactoryBuilder();<a name="line.561"></a>
-<span class="sourceLineNo">562</span>    builder.setNameFormat("LoadIncrementalHFiles-%1$d");<a name="line.562"></a>
-<span class="sourceLineNo">563</span>    ExecutorService pool = new ThreadPoolExecutor(nrThreads, nrThreads, 60, TimeUnit.SECONDS,<a name="line.563"></a>
-<span class="sourceLineNo">564</span>        new LinkedBlockingQueue&lt;Runnable&gt;(), builder.build());<a name="line.564"></a>
-<span class="sourceLineNo">565</span>    ((ThreadPoolExecutor) pool).allowCoreThreadTimeOut(true);<a name="line.565"></a>
-<span class="sourceLineNo">566</span>    return pool;<a name="line.566"></a>
-<span class="sourceLineNo">567</span>  }<a name="line.567"></a>
-<span class="sourceLineNo">568</span><a name="line.568"></a>
-<span class="sourceLineNo">569</span>  /**<a name="line.569"></a>
-<span class="sourceLineNo">570</span>   * Checks whether there is any invalid family name in HFiles to be bulk loaded.<a name="line.570"></a>
-<span class="sourceLineNo">571</span>   */<a name="line.571"></a>
-<span class="sourceLineNo">572</span>  private void validateFamiliesInHFiles(Table table, Deque&lt;LoadQueueItem&gt; queue, boolean silence)<a name="line.572"></a>
-<span class="sourceLineNo">573</span>      throws IOException {<a name="line.573"></a>
-<span class="sourceLineNo">574</span>    Collection&lt;HColumnDescriptor&gt; families = table.getTableDescriptor().getFamilies();<a name="line.574"></a>
-<span class="sourceLineNo">575</span>    List&lt;String&gt; familyNames = new ArrayList&lt;&gt;(families.size());<a name="line.575"></a>
-<span class="sourceLineNo">576</span>    for (HColumnDescriptor family : families) {<a name="line.576"></a>
-<span class="sourceLineNo">577</span>      familyNames.add(family.getNameAsString());<a name="line.577"></a>
-<span class="sourceLineNo">578</span>    }<a name="line.578"></a>
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-<span class="sourceLineNo">580</span>    while (queueIter.hasNext()) {<a name="line.580"></a>
-<span class="sourceLineNo">581</span>      LoadQueueItem lqi = queueIter.next();<a name="line.581"></a>
-<span class="sourceLineNo">582</span>      String familyNameInHFile = Bytes.toString(lqi.family);<a name="line.582"></a>
-<span class="sourceLineNo">583</span>      if (!familyNames.contains(familyNameInHFile)) {<a name="line.583"></a>
-<span class="sourceLineNo">584</span>        unmatchedFamilies.add(familyNameInHFile);<a name="line.584"></a>
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-<span class="sourceLineNo">586</span>    }<a name="line.586"></a>
-<span class="sourceLineNo">587</span>    if (unmatchedFamilies.size() &gt; 0) {<a name="line.587"></a>
-<span class="sourceLineNo">588</span>      String msg =<a name="line.588"></a>
-<span class="sourceLineNo">589</span>          "Unmatched family names found: unmatched family names in HFiles to be bulkloaded: "<a name="line.589"></a>
-<span class="sourceLineNo">590</span>              + unmatchedFamilies + "; valid family names of table " + table.getName() + " are: "<a name="line.590"></a>
-<span class="sourceLineNo">591</span>              + familyNames;<a name="line.591"></a>
-<span class="sourceLineNo">592</span>      LOG.error(msg);<a name="line.592"></a>
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-<span class="sourceLineNo">599</span>   * &lt;ol&gt;<a name="line.599"></a>
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-<span class="sourceLineNo">601</span>   * &lt;li&gt;LoadIncrementalHFiles#bulkLoadPhase(Table, Connection, ExecutorService, Deque, Multimap)<a name="line.601"></a>
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-<span class="sourceLineNo">606</span>   * @param queue {@link LoadQueueItem} has hfiles yet to be loaded<a name="line.606"></a>
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-<span class="sourceLineNo">644</span>   * groupOrSplitPhase.<a name="line.644"></a>
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+<span class="sourceLineNo">788</span><a name="line.788"></a>
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+<span class="sourceLineNo">803</span><a name="line.803"></a>
+<span class="sourceLineNo">804</span>    LOG.info("HFile at " + hfilePath + " no longer fits inside a single " +<a name="line.804"></a>
+<span class="sourceLineNo">805</span>      "region. Splitting...");<a name="line.805"></a>
 <span class="sourceLineNo">806</span><a name="line.806"></a>
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-<span class="sourceLineNo">856</span>      first = hfr.getFirstRowKey();<a name="line.856"></a>
-<span class="sourceLineNo">857</span>      last = hfr.getLastRowKey();<a name="line.857"></a>
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-<span class="sourceLineNo">861</span><a name="line.861"></a>
-<span class="sourceLineNo">862</span>    LOG.info("Trying to load hfile=" + hfilePath +<a name="line.862"></a>
-<span class="sourceLineNo">863</span>        " first=" + Bytes.toStringBinary(first) +<a name="line.863"></a>
-<span class="sourceLineNo">864</span>        " last="  + Bytes.toStringBinary(last));<a name="line.864"></a>
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-<span class="sourceLineNo">866</span>      assert first == null &amp;&amp; last == null;<a name="line.866"></a>
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-<span class="sourceLineNo">868</span>      LOG.info("hfile " + hfilePath + " has no entries, skipping");<a name="line.868"></a>
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-<span class="sourceLineNo">870</span>    }<a name="line.870"></a>
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-<span class="sourceLineNo">873</span>      "Invalid range: " + Bytes.toStringBinary(first) +<a name="line.873"></a>
-<span class="sourceLineNo">874</span>      " &gt; " + Bytes.toStringBinary(last));<a name="line.874"></a>
-<span class="sourceLineNo">875</span>    }<a name="line.875"></a>
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-<span class="sourceLineNo">877</span>        Bytes.BYTES_COMPARATOR);<a name="line.877"></a>
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-<span class="sourceLineNo">880</span>      // would be in.<a name="line.880"></a>
-<span class="sourceLineNo">881</span>      idx = -(idx + 1) - 1;<a name="line.881"></a>
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+<span class="sourceLineNo">808</span>    HColumnDescriptor familyDesc = table.getTableDescriptor().getFamily(item.family);<a name="line.808"></a>
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+<span class="sourceLineNo">811</span>    Path topOut = new Path(tmpDir, uniqueName + ".top");<a name="line.811"></a>
+<span class="sourceLineNo">812</span>    splitStoreFile(getConf(), hfilePath, familyDesc, splitKey, botOut, topOut);<a name="line.812"></a>
+<span class="sourceLineNo">813</span><a name="line.813"></a>
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+<span class="sourceLineNo">815</span>    fs.setPermission(tmpDir, FsPermission.valueOf("-rwxrwxrwx"));<a name="line.815"></a>
+<span class="sourceLineNo">816</span>    fs.setPermission(botOut, FsPermission.valueOf("-rwxrwxrwx"));<a name="line.816"></a>
+<span class="sourceLineNo">817</span>    fs.setPermission(topOut, FsPermission.valueOf("-rwxrwxrwx"));<a name="line.817"></a>
+<span class="sourceLineNo">818</span><a name="line.818"></a>
+<span class="sourceLineNo">819</span>    // Add these back at the *front* of the queue, so there's a lower<a name="line.819"></a>
+<span class="sourceLineNo">820</span>    // chance that the region will just split again before we get there.<a name="line.820"></a>
+<span class="sourceLineNo">821</span>    List&lt;LoadQueueItem&gt; lqis = new ArrayList&lt;LoadQueueItem&gt;(2);<a name="line.821"></a>
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+<span class="sourceLineNo">824</span><a name="line.824"></a>
+<span class="sourceLineNo">825</span>    // If the current item is already the result of previous splits,<a name="line.825"></a>
+<span class="sourceLineNo">826</span>    // we don't need it anymore. Clean up to save space.<a name="line.826"></a>
+<span class="sourceLineNo">827</span>    // It is not part of the original input files.<a name="line.827"></a>
+<span class="sourceLineNo">828</span>    try {<a name="line.828"></a>
+<span class="sourceLineNo">829</span>      tmpDir = item.hfilePath.getParent();<a name="line.829"></a>
+<span class="sourceLineNo">830</span>      if (tmpDir.getName().equals(TMP_DIR)) {<a name="line.830"></a>
+<span class="sourceLineNo">831</span>        fs.delete(item.hfilePath, false);<a name="line.831"></a>
+<span class="sourceLineNo">832</span>      }<a name="line.832"></a>
+<span class="sourceLineNo">833</span>    } catch (IOException e) {<a name="line.833"></a>
+<span class="sourceLineNo">834</span>      LOG.warn("Unable to delete temporary split file " + item.hfilePath);<a name="line.834"></a>
+<span class="sourceLineNo">835</span>    }<a name="line.835"></a>
+<span class="sourceLineNo">836</span>    LOG.info("Successfully split into new HFiles " + botOut + " and " + topOut);<a name="line.836"></a>
+<span class="sourceLineNo">837</span>    return lqis;<a name="line.837"></a>
+<span class="sourceLineNo">838</span>  }<a name="line.838"></a>
+<span class="sourceLineNo">839</span><a name="line.839"></a>
+<span class="sourceLineNo">840</span>  /**<a name="line.840"></a>
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+<span class="sourceLineNo">843</span>   * the hfile such that the new bottom half will fit and returns the list of<a name="line.843"></a>
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+<span class="sourceLineNo">845</span>   *<a name="line.845"></a>
+<span class="sourceLineNo">846</span>   * protected for testing<a name="line.846"></a>
+<span class="sourceLineNo">847</span>   * @throws IOException if an IO failure is encountered<a name="line.847"></a>
+<span class="sourceLineNo">848</span>   */<a name="line.848"></a>
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+<span class="sourceLineNo">853</span>    // fs is the source filesystem<a name="line.853"></a>
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+<span class="sourceLineNo">856</span>    }<a name="line.856"></a>
+<span class="sourceLineNo">857</span>    HFile.Reader hfr = null;<a name="line.857"></a>
+<span class="sourceLineNo">858</span>    try {<a name="line.858"></a>
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+<span class="sourceLineNo">860</span>          new CacheConfig(getConf()), getConf());<a name="line.860"></a>
+<span class="sourceLineNo">861</span>    } catch (FileNotFoundException fnfe) {<a name="line.861"></a>
+<span class="sourceLineNo">862</span>      LOG.debug("encountered", fnfe);<a name="line.862"></a>
+<span class="sourceLineNo">863</span>      return new Pair&lt;&gt;(null, hfilePath.getName());<a name="line.863"></a>
+<span class="sourceLineNo">864</span>    }<a name="line.864"></a>
+<span class="sourceLineNo">865</span>    final byte[] first, la

<TRUNCATED>

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