http://git-wip-us.apache.org/repos/asf/hbase-site/blob/ac54a6a8/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/HRegionFileSystem.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/HRegionFileSystem.html b/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/HRegionFileSystem.html index 9edb4b1..11458f7 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/HRegionFileSystem.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/HRegionFileSystem.html @@ -660,558 +660,560 @@ <span class="sourceLineNo">652</span> * @param f File to split.<a name="line.652"></a> <span class="sourceLineNo">653</span> * @param splitRow Split Row<a name="line.653"></a> <span class="sourceLineNo">654</span> * @param top True if we are referring to the top half of the hfile.<a name="line.654"></a> -<span class="sourceLineNo">655</span> * @param splitPolicy<a name="line.655"></a> -<span class="sourceLineNo">656</span> * @return Path to created reference.<a name="line.656"></a> -<span class="sourceLineNo">657</span> * @throws IOException<a name="line.657"></a> -<span class="sourceLineNo">658</span> */<a name="line.658"></a> -<span class="sourceLineNo">659</span> public Path splitStoreFile(RegionInfo hri, String familyName, HStoreFile f, byte[] splitRow,<a name="line.659"></a> -<span class="sourceLineNo">660</span> boolean top, RegionSplitPolicy splitPolicy) throws IOException {<a name="line.660"></a> -<span class="sourceLineNo">661</span> if (splitPolicy == null || !splitPolicy.skipStoreFileRangeCheck(familyName)) {<a name="line.661"></a> -<span class="sourceLineNo">662</span> // Check whether the split row lies in the range of the store file<a name="line.662"></a> -<span class="sourceLineNo">663</span> // If it is outside the range, return directly.<a name="line.663"></a> -<span class="sourceLineNo">664</span> f.initReader();<a name="line.664"></a> -<span class="sourceLineNo">665</span> try {<a name="line.665"></a> -<span class="sourceLineNo">666</span> if (top) {<a name="line.666"></a> -<span class="sourceLineNo">667</span> //check if larger than last key.<a name="line.667"></a> -<span class="sourceLineNo">668</span> Cell splitKey = PrivateCellUtil.createFirstOnRow(splitRow);<a name="line.668"></a> -<span class="sourceLineNo">669</span> Optional<Cell> lastKey = f.getLastKey();<a name="line.669"></a> -<span class="sourceLineNo">670</span> // If lastKey is null means storefile is empty.<a name="line.670"></a> -<span class="sourceLineNo">671</span> if (!lastKey.isPresent()) {<a name="line.671"></a> -<span class="sourceLineNo">672</span> return null;<a name="line.672"></a> -<span class="sourceLineNo">673</span> }<a name="line.673"></a> -<span class="sourceLineNo">674</span> if (f.getComparator().compare(splitKey, lastKey.get()) > 0) {<a name="line.674"></a> -<span class="sourceLineNo">675</span> return null;<a name="line.675"></a> -<span class="sourceLineNo">676</span> }<a name="line.676"></a> -<span class="sourceLineNo">677</span> } else {<a name="line.677"></a> -<span class="sourceLineNo">678</span> //check if smaller than first key<a name="line.678"></a> -<span class="sourceLineNo">679</span> Cell splitKey = PrivateCellUtil.createLastOnRow(splitRow);<a name="line.679"></a> -<span class="sourceLineNo">680</span> Optional<Cell> firstKey = f.getFirstKey();<a name="line.680"></a> -<span class="sourceLineNo">681</span> // If firstKey is null means storefile is empty.<a name="line.681"></a> -<span class="sourceLineNo">682</span> if (!firstKey.isPresent()) {<a name="line.682"></a> -<span class="sourceLineNo">683</span> return null;<a name="line.683"></a> -<span class="sourceLineNo">684</span> }<a name="line.684"></a> -<span class="sourceLineNo">685</span> if (f.getComparator().compare(splitKey, firstKey.get()) < 0) {<a name="line.685"></a> -<span class="sourceLineNo">686</span> return null;<a name="line.686"></a> -<span class="sourceLineNo">687</span> }<a name="line.687"></a> -<span class="sourceLineNo">688</span> }<a name="line.688"></a> -<span class="sourceLineNo">689</span> } finally {<a name="line.689"></a> -<span class="sourceLineNo">690</span> f.closeStoreFile(f.getCacheConf() != null ? f.getCacheConf().shouldEvictOnClose() : true);<a name="line.690"></a> -<span class="sourceLineNo">691</span> }<a name="line.691"></a> -<span class="sourceLineNo">692</span> }<a name="line.692"></a> -<span class="sourceLineNo">693</span><a name="line.693"></a> -<span class="sourceLineNo">694</span> Path splitDir = new Path(getSplitsDir(hri), familyName);<a name="line.694"></a> -<span class="sourceLineNo">695</span> // A reference to the bottom half of the hsf store file.<a name="line.695"></a> -<span class="sourceLineNo">696</span> Reference r =<a name="line.696"></a> -<span class="sourceLineNo">697</span> top ? Reference.createTopReference(splitRow): Reference.createBottomReference(splitRow);<a name="line.697"></a> -<span class="sourceLineNo">698</span> // Add the referred-to regions name as a dot separated suffix.<a name="line.698"></a> -<span class="sourceLineNo">699</span> // See REF_NAME_REGEX regex above. The referred-to regions name is<a name="line.699"></a> -<span class="sourceLineNo">700</span> // up in the path of the passed in <code>f</code> -- parentdir is family,<a name="line.700"></a> -<span class="sourceLineNo">701</span> // then the directory above is the region name.<a name="line.701"></a> -<span class="sourceLineNo">702</span> String parentRegionName = regionInfoForFs.getEncodedName();<a name="line.702"></a> -<span class="sourceLineNo">703</span> // Write reference with same file id only with the other region name as<a name="line.703"></a> -<span class="sourceLineNo">704</span> // suffix and into the new region location (under same family).<a name="line.704"></a> -<span class="sourceLineNo">705</span> Path p = new Path(splitDir, f.getPath().getName() + "." + parentRegionName);<a name="line.705"></a> -<span class="sourceLineNo">706</span> return r.write(fs, p);<a name="line.706"></a> -<span class="sourceLineNo">707</span> }<a name="line.707"></a> -<span class="sourceLineNo">708</span><a name="line.708"></a> -<span class="sourceLineNo">709</span> // ===========================================================================<a name="line.709"></a> -<span class="sourceLineNo">710</span> // Merge Helpers<a name="line.710"></a> +<span class="sourceLineNo">655</span> * @param splitPolicy A split policy instance; be careful! May not be full populated; e.g. if<a name="line.655"></a> +<span class="sourceLineNo">656</span> * this method is invoked on the Master side, then the RegionSplitPolicy will<a name="line.656"></a> +<span class="sourceLineNo">657</span> * NOT have a reference to a Region.<a name="line.657"></a> +<span class="sourceLineNo">658</span> * @return Path to created reference.<a name="line.658"></a> +<span class="sourceLineNo">659</span> * @throws IOException<a name="line.659"></a> +<span class="sourceLineNo">660</span> */<a name="line.660"></a> +<span class="sourceLineNo">661</span> public Path splitStoreFile(RegionInfo hri, String familyName, HStoreFile f, byte[] splitRow,<a name="line.661"></a> +<span class="sourceLineNo">662</span> boolean top, RegionSplitPolicy splitPolicy) throws IOException {<a name="line.662"></a> +<span class="sourceLineNo">663</span> if (splitPolicy == null || !splitPolicy.skipStoreFileRangeCheck(familyName)) {<a name="line.663"></a> +<span class="sourceLineNo">664</span> // Check whether the split row lies in the range of the store file<a name="line.664"></a> +<span class="sourceLineNo">665</span> // If it is outside the range, return directly.<a name="line.665"></a> +<span class="sourceLineNo">666</span> f.initReader();<a name="line.666"></a> +<span class="sourceLineNo">667</span> try {<a name="line.667"></a> +<span class="sourceLineNo">668</span> if (top) {<a name="line.668"></a> +<span class="sourceLineNo">669</span> //check if larger than last key.<a name="line.669"></a> +<span class="sourceLineNo">670</span> Cell splitKey = PrivateCellUtil.createFirstOnRow(splitRow);<a name="line.670"></a> +<span class="sourceLineNo">671</span> Optional<Cell> lastKey = f.getLastKey();<a name="line.671"></a> +<span class="sourceLineNo">672</span> // If lastKey is null means storefile is empty.<a name="line.672"></a> +<span class="sourceLineNo">673</span> if (!lastKey.isPresent()) {<a name="line.673"></a> +<span class="sourceLineNo">674</span> return null;<a name="line.674"></a> +<span class="sourceLineNo">675</span> }<a name="line.675"></a> +<span class="sourceLineNo">676</span> if (f.getComparator().compare(splitKey, lastKey.get()) > 0) {<a name="line.676"></a> +<span class="sourceLineNo">677</span> return null;<a name="line.677"></a> +<span class="sourceLineNo">678</span> }<a name="line.678"></a> +<span class="sourceLineNo">679</span> } else {<a name="line.679"></a> +<span class="sourceLineNo">680</span> //check if smaller than first key<a name="line.680"></a> +<span class="sourceLineNo">681</span> Cell splitKey = PrivateCellUtil.createLastOnRow(splitRow);<a name="line.681"></a> +<span class="sourceLineNo">682</span> Optional<Cell> firstKey = f.getFirstKey();<a name="line.682"></a> +<span class="sourceLineNo">683</span> // If firstKey is null means storefile is empty.<a name="line.683"></a> +<span class="sourceLineNo">684</span> if (!firstKey.isPresent()) {<a name="line.684"></a> +<span class="sourceLineNo">685</span> return null;<a name="line.685"></a> +<span class="sourceLineNo">686</span> }<a name="line.686"></a> +<span class="sourceLineNo">687</span> if (f.getComparator().compare(splitKey, firstKey.get()) < 0) {<a name="line.687"></a> +<span class="sourceLineNo">688</span> return null;<a name="line.688"></a> +<span class="sourceLineNo">689</span> }<a name="line.689"></a> +<span class="sourceLineNo">690</span> }<a name="line.690"></a> +<span class="sourceLineNo">691</span> } finally {<a name="line.691"></a> +<span class="sourceLineNo">692</span> f.closeStoreFile(f.getCacheConf() != null ? f.getCacheConf().shouldEvictOnClose() : true);<a name="line.692"></a> +<span class="sourceLineNo">693</span> }<a name="line.693"></a> +<span class="sourceLineNo">694</span> }<a name="line.694"></a> +<span class="sourceLineNo">695</span><a name="line.695"></a> +<span class="sourceLineNo">696</span> Path splitDir = new Path(getSplitsDir(hri), familyName);<a name="line.696"></a> +<span class="sourceLineNo">697</span> // A reference to the bottom half of the hsf store file.<a name="line.697"></a> +<span class="sourceLineNo">698</span> Reference r =<a name="line.698"></a> +<span class="sourceLineNo">699</span> top ? Reference.createTopReference(splitRow): Reference.createBottomReference(splitRow);<a name="line.699"></a> +<span class="sourceLineNo">700</span> // Add the referred-to regions name as a dot separated suffix.<a name="line.700"></a> +<span class="sourceLineNo">701</span> // See REF_NAME_REGEX regex above. The referred-to regions name is<a name="line.701"></a> +<span class="sourceLineNo">702</span> // up in the path of the passed in <code>f</code> -- parentdir is family,<a name="line.702"></a> +<span class="sourceLineNo">703</span> // then the directory above is the region name.<a name="line.703"></a> +<span class="sourceLineNo">704</span> String parentRegionName = regionInfoForFs.getEncodedName();<a name="line.704"></a> +<span class="sourceLineNo">705</span> // Write reference with same file id only with the other region name as<a name="line.705"></a> +<span class="sourceLineNo">706</span> // suffix and into the new region location (under same family).<a name="line.706"></a> +<span class="sourceLineNo">707</span> Path p = new Path(splitDir, f.getPath().getName() + "." + parentRegionName);<a name="line.707"></a> +<span class="sourceLineNo">708</span> return r.write(fs, p);<a name="line.708"></a> +<span class="sourceLineNo">709</span> }<a name="line.709"></a> +<span class="sourceLineNo">710</span><a name="line.710"></a> <span class="sourceLineNo">711</span> // ===========================================================================<a name="line.711"></a> -<span class="sourceLineNo">712</span> /** @return {@link Path} to the temp directory used during merge operations */<a name="line.712"></a> -<span class="sourceLineNo">713</span> public Path getMergesDir() {<a name="line.713"></a> -<span class="sourceLineNo">714</span> return new Path(getRegionDir(), REGION_MERGES_DIR);<a name="line.714"></a> -<span class="sourceLineNo">715</span> }<a name="line.715"></a> -<span class="sourceLineNo">716</span><a name="line.716"></a> -<span class="sourceLineNo">717</span> Path getMergesDir(final RegionInfo hri) {<a name="line.717"></a> -<span class="sourceLineNo">718</span> return new Path(getMergesDir(), hri.getEncodedName());<a name="line.718"></a> -<span class="sourceLineNo">719</span> }<a name="line.719"></a> -<span class="sourceLineNo">720</span><a name="line.720"></a> -<span class="sourceLineNo">721</span> /**<a name="line.721"></a> -<span class="sourceLineNo">722</span> * Clean up any merge detritus that may have been left around from previous merge attempts.<a name="line.722"></a> -<span class="sourceLineNo">723</span> */<a name="line.723"></a> -<span class="sourceLineNo">724</span> void cleanupMergesDir() throws IOException {<a name="line.724"></a> -<span class="sourceLineNo">725</span> deleteDir(getMergesDir());<a name="line.725"></a> -<span class="sourceLineNo">726</span> }<a name="line.726"></a> -<span class="sourceLineNo">727</span><a name="line.727"></a> -<span class="sourceLineNo">728</span> /**<a name="line.728"></a> -<span class="sourceLineNo">729</span> * Remove merged region<a name="line.729"></a> -<span class="sourceLineNo">730</span> * @param mergedRegion {@link RegionInfo}<a name="line.730"></a> -<span class="sourceLineNo">731</span> * @throws IOException<a name="line.731"></a> -<span class="sourceLineNo">732</span> */<a name="line.732"></a> -<span class="sourceLineNo">733</span> public void cleanupMergedRegion(final RegionInfo mergedRegion) throws IOException {<a name="line.733"></a> -<span class="sourceLineNo">734</span> Path regionDir = new Path(this.tableDir, mergedRegion.getEncodedName());<a name="line.734"></a> -<span class="sourceLineNo">735</span> if (this.fs.exists(regionDir) && !this.fs.delete(regionDir, true)) {<a name="line.735"></a> -<span class="sourceLineNo">736</span> throw new IOException("Failed delete of " + regionDir);<a name="line.736"></a> -<span class="sourceLineNo">737</span> }<a name="line.737"></a> -<span class="sourceLineNo">738</span> }<a name="line.738"></a> -<span class="sourceLineNo">739</span><a name="line.739"></a> -<span class="sourceLineNo">740</span> static boolean mkdirs(FileSystem fs, Configuration conf, Path dir) throws IOException {<a name="line.740"></a> -<span class="sourceLineNo">741</span> if (FSUtils.isDistributedFileSystem(fs) ||<a name="line.741"></a> -<span class="sourceLineNo">742</span> !conf.getBoolean(HConstants.ENABLE_DATA_FILE_UMASK, false)) {<a name="line.742"></a> -<span class="sourceLineNo">743</span> return fs.mkdirs(dir);<a name="line.743"></a> -<span class="sourceLineNo">744</span> }<a name="line.744"></a> -<span class="sourceLineNo">745</span> FsPermission perms = FSUtils.getFilePermissions(fs, conf, HConstants.DATA_FILE_UMASK_KEY);<a name="line.745"></a> -<span class="sourceLineNo">746</span> return fs.mkdirs(dir, perms);<a name="line.746"></a> -<span class="sourceLineNo">747</span> }<a name="line.747"></a> -<span class="sourceLineNo">748</span><a name="line.748"></a> -<span class="sourceLineNo">749</span> /**<a name="line.749"></a> -<span class="sourceLineNo">750</span> * Create the region merges directory.<a name="line.750"></a> -<span class="sourceLineNo">751</span> * @throws IOException If merges dir already exists or we fail to create it.<a name="line.751"></a> -<span class="sourceLineNo">752</span> * @see HRegionFileSystem#cleanupMergesDir()<a name="line.752"></a> -<span class="sourceLineNo">753</span> */<a name="line.753"></a> -<span class="sourceLineNo">754</span> public void createMergesDir() throws IOException {<a name="line.754"></a> -<span class="sourceLineNo">755</span> Path mergesdir = getMergesDir();<a name="line.755"></a> -<span class="sourceLineNo">756</span> if (fs.exists(mergesdir)) {<a name="line.756"></a> -<span class="sourceLineNo">757</span> LOG.info("The " + mergesdir<a name="line.757"></a> -<span class="sourceLineNo">758</span> + " directory exists. Hence deleting it to recreate it");<a name="line.758"></a> -<span class="sourceLineNo">759</span> if (!fs.delete(mergesdir, true)) {<a name="line.759"></a> -<span class="sourceLineNo">760</span> throw new IOException("Failed deletion of " + mergesdir<a name="line.760"></a> -<span class="sourceLineNo">761</span> + " before creating them again.");<a name="line.761"></a> -<span class="sourceLineNo">762</span> }<a name="line.762"></a> -<span class="sourceLineNo">763</span> }<a name="line.763"></a> -<span class="sourceLineNo">764</span> if (!mkdirs(fs, conf, mergesdir))<a name="line.764"></a> -<span class="sourceLineNo">765</span> throw new IOException("Failed create of " + mergesdir);<a name="line.765"></a> -<span class="sourceLineNo">766</span> }<a name="line.766"></a> -<span class="sourceLineNo">767</span><a name="line.767"></a> -<span class="sourceLineNo">768</span> /**<a name="line.768"></a> -<span class="sourceLineNo">769</span> * Write out a merge reference under the given merges directory. Package local<a name="line.769"></a> -<span class="sourceLineNo">770</span> * so it doesnt leak out of regionserver.<a name="line.770"></a> -<span class="sourceLineNo">771</span> * @param mergedRegion {@link RegionInfo} of the merged region<a name="line.771"></a> -<span class="sourceLineNo">772</span> * @param familyName Column Family Name<a name="line.772"></a> -<span class="sourceLineNo">773</span> * @param f File to create reference.<a name="line.773"></a> -<span class="sourceLineNo">774</span> * @param mergedDir<a name="line.774"></a> -<span class="sourceLineNo">775</span> * @return Path to created reference.<a name="line.775"></a> -<span class="sourceLineNo">776</span> * @throws IOException<a name="line.776"></a> -<span class="sourceLineNo">777</span> */<a name="line.777"></a> -<span class="sourceLineNo">778</span> public Path mergeStoreFile(RegionInfo mergedRegion, String familyName, HStoreFile f,<a name="line.778"></a> -<span class="sourceLineNo">779</span> Path mergedDir) throws IOException {<a name="line.779"></a> -<span class="sourceLineNo">780</span> Path referenceDir = new Path(new Path(mergedDir,<a name="line.780"></a> -<span class="sourceLineNo">781</span> mergedRegion.getEncodedName()), familyName);<a name="line.781"></a> -<span class="sourceLineNo">782</span> // A whole reference to the store file.<a name="line.782"></a> -<span class="sourceLineNo">783</span> Reference r = Reference.createTopReference(regionInfoForFs.getStartKey());<a name="line.783"></a> -<span class="sourceLineNo">784</span> // Add the referred-to regions name as a dot separated suffix.<a name="line.784"></a> -<span class="sourceLineNo">785</span> // See REF_NAME_REGEX regex above. The referred-to regions name is<a name="line.785"></a> -<span class="sourceLineNo">786</span> // up in the path of the passed in <code>f</code> -- parentdir is family,<a name="line.786"></a> -<span class="sourceLineNo">787</span> // then the directory above is the region name.<a name="line.787"></a> -<span class="sourceLineNo">788</span> String mergingRegionName = regionInfoForFs.getEncodedName();<a name="line.788"></a> -<span class="sourceLineNo">789</span> // Write reference with same file id only with the other region name as<a name="line.789"></a> -<span class="sourceLineNo">790</span> // suffix and into the new region location (under same family).<a name="line.790"></a> -<span class="sourceLineNo">791</span> Path p = new Path(referenceDir, f.getPath().getName() + "."<a name="line.791"></a> -<span class="sourceLineNo">792</span> + mergingRegionName);<a name="line.792"></a> -<span class="sourceLineNo">793</span> return r.write(fs, p);<a name="line.793"></a> -<span class="sourceLineNo">794</span> }<a name="line.794"></a> -<span class="sourceLineNo">795</span><a name="line.795"></a> -<span class="sourceLineNo">796</span> /**<a name="line.796"></a> -<span class="sourceLineNo">797</span> * Commit a merged region, moving it from the merges temporary directory to<a name="line.797"></a> -<span class="sourceLineNo">798</span> * the proper location in the filesystem.<a name="line.798"></a> -<span class="sourceLineNo">799</span> * @param mergedRegionInfo merged region {@link RegionInfo}<a name="line.799"></a> -<span class="sourceLineNo">800</span> * @throws IOException<a name="line.800"></a> -<span class="sourceLineNo">801</span> */<a name="line.801"></a> -<span class="sourceLineNo">802</span> public void commitMergedRegion(final RegionInfo mergedRegionInfo) throws IOException {<a name="line.802"></a> -<span class="sourceLineNo">803</span> Path regionDir = new Path(this.tableDir, mergedRegionInfo.getEncodedName());<a name="line.803"></a> -<span class="sourceLineNo">804</span> Path mergedRegionTmpDir = this.getMergesDir(mergedRegionInfo);<a name="line.804"></a> -<span class="sourceLineNo">805</span> // Move the tmp dir in the expected location<a name="line.805"></a> -<span class="sourceLineNo">806</span> if (mergedRegionTmpDir != null && fs.exists(mergedRegionTmpDir)) {<a name="line.806"></a> -<span class="sourceLineNo">807</span> if (!fs.rename(mergedRegionTmpDir, regionDir)) {<a name="line.807"></a> -<span class="sourceLineNo">808</span> throw new IOException("Unable to rename " + mergedRegionTmpDir + " to "<a name="line.808"></a> -<span class="sourceLineNo">809</span> + regionDir);<a name="line.809"></a> -<span class="sourceLineNo">810</span> }<a name="line.810"></a> -<span class="sourceLineNo">811</span> }<a name="line.811"></a> -<span class="sourceLineNo">812</span> }<a name="line.812"></a> -<span class="sourceLineNo">813</span><a name="line.813"></a> -<span class="sourceLineNo">814</span> // ===========================================================================<a name="line.814"></a> -<span class="sourceLineNo">815</span> // Create/Open/Delete Helpers<a name="line.815"></a> +<span class="sourceLineNo">712</span> // Merge Helpers<a name="line.712"></a> +<span class="sourceLineNo">713</span> // ===========================================================================<a name="line.713"></a> +<span class="sourceLineNo">714</span> /** @return {@link Path} to the temp directory used during merge operations */<a name="line.714"></a> +<span class="sourceLineNo">715</span> public Path getMergesDir() {<a name="line.715"></a> +<span class="sourceLineNo">716</span> return new Path(getRegionDir(), REGION_MERGES_DIR);<a name="line.716"></a> +<span class="sourceLineNo">717</span> }<a name="line.717"></a> +<span class="sourceLineNo">718</span><a name="line.718"></a> +<span class="sourceLineNo">719</span> Path getMergesDir(final RegionInfo hri) {<a name="line.719"></a> +<span class="sourceLineNo">720</span> return new Path(getMergesDir(), hri.getEncodedName());<a name="line.720"></a> +<span class="sourceLineNo">721</span> }<a name="line.721"></a> +<span class="sourceLineNo">722</span><a name="line.722"></a> +<span class="sourceLineNo">723</span> /**<a name="line.723"></a> +<span class="sourceLineNo">724</span> * Clean up any merge detritus that may have been left around from previous merge attempts.<a name="line.724"></a> +<span class="sourceLineNo">725</span> */<a name="line.725"></a> +<span class="sourceLineNo">726</span> void cleanupMergesDir() throws IOException {<a name="line.726"></a> +<span class="sourceLineNo">727</span> deleteDir(getMergesDir());<a name="line.727"></a> +<span class="sourceLineNo">728</span> }<a name="line.728"></a> +<span class="sourceLineNo">729</span><a name="line.729"></a> +<span class="sourceLineNo">730</span> /**<a name="line.730"></a> +<span class="sourceLineNo">731</span> * Remove merged region<a name="line.731"></a> +<span class="sourceLineNo">732</span> * @param mergedRegion {@link RegionInfo}<a name="line.732"></a> +<span class="sourceLineNo">733</span> * @throws IOException<a name="line.733"></a> +<span class="sourceLineNo">734</span> */<a name="line.734"></a> +<span class="sourceLineNo">735</span> public void cleanupMergedRegion(final RegionInfo mergedRegion) throws IOException {<a name="line.735"></a> +<span class="sourceLineNo">736</span> Path regionDir = new Path(this.tableDir, mergedRegion.getEncodedName());<a name="line.736"></a> +<span class="sourceLineNo">737</span> if (this.fs.exists(regionDir) && !this.fs.delete(regionDir, true)) {<a name="line.737"></a> +<span class="sourceLineNo">738</span> throw new IOException("Failed delete of " + regionDir);<a name="line.738"></a> +<span class="sourceLineNo">739</span> }<a name="line.739"></a> +<span class="sourceLineNo">740</span> }<a name="line.740"></a> +<span class="sourceLineNo">741</span><a name="line.741"></a> +<span class="sourceLineNo">742</span> static boolean mkdirs(FileSystem fs, Configuration conf, Path dir) throws IOException {<a name="line.742"></a> +<span class="sourceLineNo">743</span> if (FSUtils.isDistributedFileSystem(fs) ||<a name="line.743"></a> +<span class="sourceLineNo">744</span> !conf.getBoolean(HConstants.ENABLE_DATA_FILE_UMASK, false)) {<a name="line.744"></a> +<span class="sourceLineNo">745</span> return fs.mkdirs(dir);<a name="line.745"></a> +<span class="sourceLineNo">746</span> }<a name="line.746"></a> +<span class="sourceLineNo">747</span> FsPermission perms = FSUtils.getFilePermissions(fs, conf, HConstants.DATA_FILE_UMASK_KEY);<a name="line.747"></a> +<span class="sourceLineNo">748</span> return fs.mkdirs(dir, perms);<a name="line.748"></a> +<span class="sourceLineNo">749</span> }<a name="line.749"></a> +<span class="sourceLineNo">750</span><a name="line.750"></a> +<span class="sourceLineNo">751</span> /**<a name="line.751"></a> +<span class="sourceLineNo">752</span> * Create the region merges directory.<a name="line.752"></a> +<span class="sourceLineNo">753</span> * @throws IOException If merges dir already exists or we fail to create it.<a name="line.753"></a> +<span class="sourceLineNo">754</span> * @see HRegionFileSystem#cleanupMergesDir()<a name="line.754"></a> +<span class="sourceLineNo">755</span> */<a name="line.755"></a> +<span class="sourceLineNo">756</span> public void createMergesDir() throws IOException {<a name="line.756"></a> +<span class="sourceLineNo">757</span> Path mergesdir = getMergesDir();<a name="line.757"></a> +<span class="sourceLineNo">758</span> if (fs.exists(mergesdir)) {<a name="line.758"></a> +<span class="sourceLineNo">759</span> LOG.info("The " + mergesdir<a name="line.759"></a> +<span class="sourceLineNo">760</span> + " directory exists. Hence deleting it to recreate it");<a name="line.760"></a> +<span class="sourceLineNo">761</span> if (!fs.delete(mergesdir, true)) {<a name="line.761"></a> +<span class="sourceLineNo">762</span> throw new IOException("Failed deletion of " + mergesdir<a name="line.762"></a> +<span class="sourceLineNo">763</span> + " before creating them again.");<a name="line.763"></a> +<span class="sourceLineNo">764</span> }<a name="line.764"></a> +<span class="sourceLineNo">765</span> }<a name="line.765"></a> +<span class="sourceLineNo">766</span> if (!mkdirs(fs, conf, mergesdir))<a name="line.766"></a> +<span class="sourceLineNo">767</span> throw new IOException("Failed create of " + mergesdir);<a name="line.767"></a> +<span class="sourceLineNo">768</span> }<a name="line.768"></a> +<span class="sourceLineNo">769</span><a name="line.769"></a> +<span class="sourceLineNo">770</span> /**<a name="line.770"></a> +<span class="sourceLineNo">771</span> * Write out a merge reference under the given merges directory. Package local<a name="line.771"></a> +<span class="sourceLineNo">772</span> * so it doesnt leak out of regionserver.<a name="line.772"></a> +<span class="sourceLineNo">773</span> * @param mergedRegion {@link RegionInfo} of the merged region<a name="line.773"></a> +<span class="sourceLineNo">774</span> * @param familyName Column Family Name<a name="line.774"></a> +<span class="sourceLineNo">775</span> * @param f File to create reference.<a name="line.775"></a> +<span class="sourceLineNo">776</span> * @param mergedDir<a name="line.776"></a> +<span class="sourceLineNo">777</span> * @return Path to created reference.<a name="line.777"></a> +<span class="sourceLineNo">778</span> * @throws IOException<a name="line.778"></a> +<span class="sourceLineNo">779</span> */<a name="line.779"></a> +<span class="sourceLineNo">780</span> public Path mergeStoreFile(RegionInfo mergedRegion, String familyName, HStoreFile f,<a name="line.780"></a> +<span class="sourceLineNo">781</span> Path mergedDir) throws IOException {<a name="line.781"></a> +<span class="sourceLineNo">782</span> Path referenceDir = new Path(new Path(mergedDir,<a name="line.782"></a> +<span class="sourceLineNo">783</span> mergedRegion.getEncodedName()), familyName);<a name="line.783"></a> +<span class="sourceLineNo">784</span> // A whole reference to the store file.<a name="line.784"></a> +<span class="sourceLineNo">785</span> Reference r = Reference.createTopReference(regionInfoForFs.getStartKey());<a name="line.785"></a> +<span class="sourceLineNo">786</span> // Add the referred-to regions name as a dot separated suffix.<a name="line.786"></a> +<span class="sourceLineNo">787</span> // See REF_NAME_REGEX regex above. The referred-to regions name is<a name="line.787"></a> +<span class="sourceLineNo">788</span> // up in the path of the passed in <code>f</code> -- parentdir is family,<a name="line.788"></a> +<span class="sourceLineNo">789</span> // then the directory above is the region name.<a name="line.789"></a> +<span class="sourceLineNo">790</span> String mergingRegionName = regionInfoForFs.getEncodedName();<a name="line.790"></a> +<span class="sourceLineNo">791</span> // Write reference with same file id only with the other region name as<a name="line.791"></a> +<span class="sourceLineNo">792</span> // suffix and into the new region location (under same family).<a name="line.792"></a> +<span class="sourceLineNo">793</span> Path p = new Path(referenceDir, f.getPath().getName() + "."<a name="line.793"></a> +<span class="sourceLineNo">794</span> + mergingRegionName);<a name="line.794"></a> +<span class="sourceLineNo">795</span> return r.write(fs, p);<a name="line.795"></a> +<span class="sourceLineNo">796</span> }<a name="line.796"></a> +<span class="sourceLineNo">797</span><a name="line.797"></a> +<span class="sourceLineNo">798</span> /**<a name="line.798"></a> +<span class="sourceLineNo">799</span> * Commit a merged region, moving it from the merges temporary directory to<a name="line.799"></a> +<span class="sourceLineNo">800</span> * the proper location in the filesystem.<a name="line.800"></a> +<span class="sourceLineNo">801</span> * @param mergedRegionInfo merged region {@link RegionInfo}<a name="line.801"></a> +<span class="sourceLineNo">802</span> * @throws IOException<a name="line.802"></a> +<span class="sourceLineNo">803</span> */<a name="line.803"></a> +<span class="sourceLineNo">804</span> public void commitMergedRegion(final RegionInfo mergedRegionInfo) throws IOException {<a name="line.804"></a> +<span class="sourceLineNo">805</span> Path regionDir = new Path(this.tableDir, mergedRegionInfo.getEncodedName());<a name="line.805"></a> +<span class="sourceLineNo">806</span> Path mergedRegionTmpDir = this.getMergesDir(mergedRegionInfo);<a name="line.806"></a> +<span class="sourceLineNo">807</span> // Move the tmp dir in the expected location<a name="line.807"></a> +<span class="sourceLineNo">808</span> if (mergedRegionTmpDir != null && fs.exists(mergedRegionTmpDir)) {<a name="line.808"></a> +<span class="sourceLineNo">809</span> if (!fs.rename(mergedRegionTmpDir, regionDir)) {<a name="line.809"></a> +<span class="sourceLineNo">810</span> throw new IOException("Unable to rename " + mergedRegionTmpDir + " to "<a name="line.810"></a> +<span class="sourceLineNo">811</span> + regionDir);<a name="line.811"></a> +<span class="sourceLineNo">812</span> }<a name="line.812"></a> +<span class="sourceLineNo">813</span> }<a name="line.813"></a> +<span class="sourceLineNo">814</span> }<a name="line.814"></a> +<span class="sourceLineNo">815</span><a name="line.815"></a> <span class="sourceLineNo">816</span> // ===========================================================================<a name="line.816"></a> -<span class="sourceLineNo">817</span> /**<a name="line.817"></a> -<span class="sourceLineNo">818</span> * Log the current state of the region<a name="line.818"></a> -<span class="sourceLineNo">819</span> * @param LOG log to output information<a name="line.819"></a> -<span class="sourceLineNo">820</span> * @throws IOException if an unexpected exception occurs<a name="line.820"></a> -<span class="sourceLineNo">821</span> */<a name="line.821"></a> -<span class="sourceLineNo">822</span> void logFileSystemState(final Logger LOG) throws IOException {<a name="line.822"></a> -<span class="sourceLineNo">823</span> FSUtils.logFileSystemState(fs, this.getRegionDir(), LOG);<a name="line.823"></a> -<span class="sourceLineNo">824</span> }<a name="line.824"></a> -<span class="sourceLineNo">825</span><a name="line.825"></a> -<span class="sourceLineNo">826</span> /**<a name="line.826"></a> -<span class="sourceLineNo">827</span> * @param hri<a name="line.827"></a> -<span class="sourceLineNo">828</span> * @return Content of the file we write out to the filesystem under a region<a name="line.828"></a> -<span class="sourceLineNo">829</span> * @throws IOException<a name="line.829"></a> -<span class="sourceLineNo">830</span> */<a name="line.830"></a> -<span class="sourceLineNo">831</span> private static byte[] getRegionInfoFileContent(final RegionInfo hri) throws IOException {<a name="line.831"></a> -<span class="sourceLineNo">832</span> return RegionInfo.toDelimitedByteArray(hri);<a name="line.832"></a> -<span class="sourceLineNo">833</span> }<a name="line.833"></a> -<span class="sourceLineNo">834</span><a name="line.834"></a> -<span class="sourceLineNo">835</span> /**<a name="line.835"></a> -<span class="sourceLineNo">836</span> * Create a {@link RegionInfo} from the serialized version on-disk.<a name="line.836"></a> -<span class="sourceLineNo">837</span> * @param fs {@link FileSystem} that contains the Region Info file<a name="line.837"></a> -<span class="sourceLineNo">838</span> * @param regionDir {@link Path} to the Region Directory that contains the Info file<a name="line.838"></a> -<span class="sourceLineNo">839</span> * @return An {@link RegionInfo} instance gotten from the Region Info file.<a name="line.839"></a> -<span class="sourceLineNo">840</span> * @throws IOException if an error occurred during file open/read operation.<a name="line.840"></a> -<span class="sourceLineNo">841</span> */<a name="line.841"></a> -<span class="sourceLineNo">842</span> public static RegionInfo loadRegionInfoFileContent(final FileSystem fs, final Path regionDir)<a name="line.842"></a> -<span class="sourceLineNo">843</span> throws IOException {<a name="line.843"></a> -<span class="sourceLineNo">844</span> FSDataInputStream in = fs.open(new Path(regionDir, REGION_INFO_FILE));<a name="line.844"></a> -<span class="sourceLineNo">845</span> try {<a name="line.845"></a> -<span class="sourceLineNo">846</span> return RegionInfo.parseFrom(in);<a name="line.846"></a> -<span class="sourceLineNo">847</span> } finally {<a name="line.847"></a> -<span class="sourceLineNo">848</span> in.close();<a name="line.848"></a> -<span class="sourceLineNo">849</span> }<a name="line.849"></a> -<span class="sourceLineNo">850</span> }<a name="line.850"></a> -<span class="sourceLineNo">851</span><a name="line.851"></a> -<span class="sourceLineNo">852</span> /**<a name="line.852"></a> -<span class="sourceLineNo">853</span> * Write the .regioninfo file on-disk.<a name="line.853"></a> -<span class="sourceLineNo">854</span> */<a name="line.854"></a> -<span class="sourceLineNo">855</span> private static void writeRegionInfoFileContent(final Configuration conf, final FileSystem fs,<a name="line.855"></a> -<span class="sourceLineNo">856</span> final Path regionInfoFile, final byte[] content) throws IOException {<a name="line.856"></a> -<span class="sourceLineNo">857</span> // First 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-<span class="sourceLineNo">869</span> * Write out an info file under the stored region directory. Useful recovering mangled regions.<a name="line.869"></a> -<span class="sourceLineNo">870</span> * If the regionInfo already exists on-disk, then we fast exit.<a name="line.870"></a> -<span class="sourceLineNo">871</span> */<a name="line.871"></a> -<span class="sourceLineNo">872</span> void checkRegionInfoOnFilesystem() throws IOException {<a name="line.872"></a> -<span class="sourceLineNo">873</span> // Compose the content of the file so we can compare to length in filesystem. If not same,<a name="line.873"></a> -<span class="sourceLineNo">874</span> // rewrite it (it may have been written in the old format using Writables instead of pb). The<a name="line.874"></a> -<span class="sourceLineNo">875</span> // pb version is much shorter -- we write now w/o the toString version -- so checking length<a name="line.875"></a> -<span class="sourceLineNo">876</span> // only should be sufficient. I don't want to read the file every time to check if it pb<a name="line.876"></a> -<span class="sourceLineNo">877</span> // serialized.<a name="line.877"></a> -<span class="sourceLineNo">878</span> byte[] content = getRegionInfoFileContent(regionInfoForFs);<a name="line.878"></a> -<span class="sourceLineNo">879</span><a name="line.879"></a> -<span class="sourceLineNo">880</span> // Verify if the region directory exists before opening a region. 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Useful recovering mangled regions.<a name="line.913"></a> -<span class="sourceLineNo">914</span> * @param useTempDir indicate whether or not using the region .tmp dir for a safer file creation.<a name="line.914"></a> -<span class="sourceLineNo">915</span> */<a name="line.915"></a> -<span class="sourceLineNo">916</span> private void writeRegionInfoOnFilesystem(boolean useTempDir) throws IOException {<a name="line.916"></a> -<span class="sourceLineNo">917</span> byte[] content = getRegionInfoFileContent(regionInfoForFs);<a name="line.917"></a> -<span class="sourceLineNo">918</span> writeRegionInfoOnFilesystem(content, useTempDir);<a name="line.918"></a> -<span class="sourceLineNo">919</span> }<a name="line.919"></a> -<span class="sourceLineNo">920</span><a name="line.920"></a> -<span class="sourceLineNo">921</span> /**<a name="line.921"></a> -<span class="sourceLineNo">922</span> * Write out an info file under the region directory. Useful recovering mangled regions.<a name="line.922"></a> -<span class="sourceLineNo">923</span> * @param regionInfoContent serialized version of the {@link RegionInfo}<a name="line.923"></a> -<span class="sourceLineNo">924</span> * @param useTempDir indicate whether or not using the region .tmp dir for a safer file creation.<a name="line.924"></a> -<span class="sourceLineNo">925</span> */<a name="line.925"></a> -<span class="sourceLineNo">926</span> private void writeRegionInfoOnFilesystem(final byte[] regionInfoContent,<a name="line.926"></a> -<span class="sourceLineNo">927</span> final boolean useTempDir) throws IOException {<a name="line.927"></a> -<span class="sourceLineNo">928</span> Path regionInfoFile = new Path(getRegionDir(), REGION_INFO_FILE);<a name="line.928"></a> -<span class="sourceLineNo">929</span> if (useTempDir) {<a name="line.929"></a> -<span class="sourceLineNo">930</span> // Create in tmpDir and then move into place in case we crash after<a name="line.930"></a> -<span class="sourceLineNo">931</span> // create but before close. 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region<a name="line.820"></a> +<span class="sourceLineNo">821</span> * @param LOG log to output information<a name="line.821"></a> +<span class="sourceLineNo">822</span> * @throws IOException if an unexpected exception occurs<a name="line.822"></a> +<span class="sourceLineNo">823</span> */<a name="line.823"></a> +<span class="sourceLineNo">824</span> void logFileSystemState(final Logger LOG) throws IOException {<a name="line.824"></a> +<span class="sourceLineNo">825</span> FSUtils.logFileSystemState(fs, this.getRegionDir(), LOG);<a name="line.825"></a> +<span class="sourceLineNo">826</span> }<a name="line.826"></a> +<span class="sourceLineNo">827</span><a name="line.827"></a> +<span class="sourceLineNo">828</span> /**<a name="line.828"></a> +<span class="sourceLineNo">829</span> * @param hri<a name="line.829"></a> +<span class="sourceLineNo">830</span> * @return Content of the file we write out to the filesystem under a region<a name="line.830"></a> +<span class="sourceLineNo">831</span> * @throws IOException<a name="line.831"></a> +<span class="sourceLineNo">832</span> */<a name="line.832"></a> +<span class="sourceLineNo">833</span> private static byte[] getRegionInfoFileContent(final RegionInfo hri) throws IOException {<a name="line.833"></a> +<span class="sourceLineNo">834</span> return RegionInfo.toDelimitedByteArray(hri);<a name="line.834"></a> +<span class="sourceLineNo">835</span> }<a name="line.835"></a> +<span class="sourceLineNo">836</span><a name="line.836"></a> +<span class="sourceLineNo">837</span> /**<a name="line.837"></a> +<span class="sourceLineNo">838</span> * Create a {@link RegionInfo} from the serialized version on-disk.<a name="line.838"></a> +<span class="sourceLineNo">839</span> * @param fs {@link FileSystem} that contains the Region Info file<a name="line.839"></a> +<span class="sourceLineNo">840</span> * @param regionDir {@link Path} to the Region Directory that contains the Info file<a name="line.840"></a> +<span class="sourceLineNo">841</span> * @return An {@link RegionInfo} instance gotten from the Region Info file.<a name="line.841"></a> +<span class="sourceLineNo">842</span> * @throws IOException if an error occurred during file open/read operation.<a name="line.842"></a> +<span class="sourceLineNo">843</span> */<a name="line.843"></a> +<span class="sourceLineNo">844</span> public static RegionInfo loadRegionInfoFileContent(final FileSystem fs, final Path regionDir)<a name="line.844"></a> +<span class="sourceLineNo">845</span> throws IOException {<a name="line.845"></a> +<span class="sourceLineNo">846</span> FSDataInputStream in = fs.open(new Path(regionDir, REGION_INFO_FILE));<a name="line.846"></a> +<span class="sourceLineNo">847</span> try {<a name="line.847"></a> +<span class="sourceLineNo">848</span> return RegionInfo.parseFrom(in);<a name="line.848"></a> +<span class="sourceLineNo">849</span> } finally {<a name="line.849"></a> +<span class="sourceLineNo">850</span> in.close();<a name="line.850"></a> +<span class="sourceLineNo">851</span> }<a name="line.851"></a> +<span class="sourceLineNo">852</span> }<a name="line.852"></a> +<span class="sourceLineNo">853</span><a name="line.853"></a> +<span class="sourceLineNo">854</span> /**<a name="line.854"></a> +<span class="sourceLineNo">855</span> * Write the .regioninfo file on-disk.<a name="line.855"></a> +<span class="sourceLineNo">856</span> */<a name="line.856"></a> +<span class="sourceLineNo">857</span> private static void writeRegionInfoFileContent(final Configuration conf, final FileSystem fs,<a name="line.857"></a> +<span class="sourceLineNo">858</span> final Path regionInfoFile, final byte[] content) throws IOException {<a name="line.858"></a> +<span class="sourceLineNo">859</span> // First check to get the permissions<a name="line.859"></a> +<span class="sourceLineNo">860</span> FsPermission perms = FSUtils.getFilePermissions(fs, conf, HConstants.DATA_FILE_UMASK_KEY);<a name="line.860"></a> +<span class="sourceLineNo">861</span> // Write the RegionInfo file content<a name="line.861"></a> +<span class="sourceLineNo">862</span> FSDataOutputStream out = FSUtils.create(conf, fs, regionInfoFile, perms, null);<a name="line.862"></a> +<span class="sourceLineNo">863</span> try {<a name="line.863"></a> +<span class="sourceLineNo">864</span> out.write(content);<a name="line.864"></a> +<span class="sourceLineNo">865</span> } finally {<a name="line.865"></a> +<span class="sourceLineNo">866</span> out.close();<a name="line.866"></a> +<span class="sourceLineNo">867</span> }<a name="line.867"></a> +<span class="sourceLineNo">868</span> }<a name="line.868"></a> +<span class="sourceLineNo">869</span><a name="line.869"></a> +<span class="sourceLineNo">870</span> /**<a name="line.870"></a> +<span class="sourceLineNo">871</span> * Write out an info file under the stored region directory. Useful recovering mangled regions.<a name="line.871"></a> +<span class="sourceLineNo">872</span> * If the regionInfo already exists on-disk, then we fast exit.<a name="line.872"></a> +<span class="sourceLineNo">873</span> */<a name="line.873"></a> +<span class="sourceLineNo">874</span> void checkRegionInfoOnFilesystem() throws IOException {<a name="line.874"></a> +<span class="sourceLineNo">875</span> // Compose the content of the file so we can compare to length in filesystem. If not same,<a name="line.875"></a> +<span class="sourceLineNo">876</span> // rewrite it (it may have been written in the old format using Writables instead of pb). The<a name="line.876"></a> +<span class="sourceLineNo">877</span> // pb version is much shorter -- we write now w/o the toString version -- so checking length<a name="line.877"></a> +<span class="sourceLineNo">878</span> // only should be sufficient. I don't want to read the file every time to check if it pb<a name="line.878"></a> +<span class="sourceLineNo">879</span> // serialized.<a name="line.879"></a> +<span class="sourceLineNo">880</span> byte[] content = getRegionInfoFileContent(regionInfoForFs);<a name="line.880"></a> +<span class="sourceLineNo">881</span><a name="line.881"></a> +<span class="sourceLineNo">882</span> // Verify if the region directory exists before opening a region. We need to do this since if<a name="line.882"></a> +<span class="sourceLineNo">883</span> // the region directory doesn't exist we will re-create the region directory and a new HRI<a name="line.883"></a> +<span class="sourceLineNo">884</span> // when HRegion.openHRegion() is called.<a name="line.884"></a> +<span class="sourceLineNo">885</span> try {<a name="line.885"></a> +<span class="sourceLineNo">886</span> FileStatus status = fs.getFileStatus(getRegionDir());<a name="line.886"></a> +<span class="sourceLineNo">887</span> } catch (FileNotFoundException e) {<a name="line.887"></a> +<span class="sourceLineNo">888</span> LOG.warn(getRegionDir() + " doesn't exist for region: " + regionInfoForFs.getEncodedName() +<a name="line.888"></a> +<span class="sourceLineNo">889</span> " on table " + regionInfo.getTable());<a name="line.889"></a> +<span class="sourceLineNo">890</span> }<a name="line.890"></a> +<span class="sourceLineNo">891</span><a name="line.891"></a> +<span class="sourceLineNo">892</span> try {<a name="line.892"></a> +<span class="sourceLineNo">893</span> Path regionInfoFile = new Path(getRegionDir(), REGION_INFO_FILE);<a name="line.893"></a> +<span class="sourceLineNo">894</span> FileStatus status = fs.getFileStatus(regionInfoFile);<a name="line.894"></a> +<span class="sourceLineNo">895</span> if (status != null && status.getLen() == content.length) {<a name="line.895"></a> +<span class="sourceLineNo">896</span> // Then assume the content good and move on.<a name="line.896"></a> +<span class="sourceLineNo">897</span> // NOTE: that the length is not sufficient to define the the content matches.<a name="line.897"></a> +<span class="sourceLineNo">898</span> return;<a name="line.898"></a> +<span class="sourceLineNo">899</span> }<a name="line.899"></a> +<span class="sourceLineNo">900</span><a name="line.900"></a> +<span class="sourceLineNo">901</span> LOG.info("Rewriting .regioninfo file at: " + regionInfoFile);<a name="line.901"></a> +<span class="sourceLineNo">902</span> if (!fs.delete(regionInfoFile, false)) {<a name="line.902"></a> +<span class="sourceLineNo">903</span> throw new IOException("Unable to remove existing " + regionInfoFile);<a name="line.903"></a> +<span class="sourceLineNo">904</span> }<a name="line.904"></a> +<span class="sourceLineNo">905</span> } catch (FileNotFoundException e) {<a name="line.905"></a> +<span class="sourceLineNo">906</span> LOG.warn(REGION_INFO_FILE + " file not found for region: " + regionInfoForFs.getEncodedName() +<a name="line.906"></a> +<span class="sourceLineNo">907</span> " on table " + regionInfo.getTable());<a name="line.907"></a> +<span class="sourceLineNo">908</span> }<a name="line.908"></a> +<span class="sourceLineNo">909</span><a name="line.909"></a> +<span class="sourceLineNo">910</span> // Write HRI to a file in case we need to recover hbase:meta<a name="line.910"></a> +<span class="sourceLineNo">911</span> writeRegionInfoOnFilesystem(content, true);<a name="line.911"></a> +<span class="sourceLineNo">912</span> }<a name="line.912"></a> +<span class="sourceLineNo">913</span><a name="line.913"></a> +<span class="sourceLineNo">914</span> /**<a name="line.914"></a> +<span class="sourceLineNo">915</span> * Write out an info file under the region directory. Useful recovering mangled regions.<a name="line.915"></a> +<span class="sourceLineNo">916</span> * @param useTempDir indicate whether or not using the region .tmp dir for a safer file creation.<a name="line.916"></a> +<span class="sourceLineNo">917</span> */<a name="line.917"></a> +<span class="sourceLineNo">918</span> private void writeRegionInfoOnFilesystem(boolean useTempDir) throws IOException {<a name="line.918"></a> +<span class="sourceLineNo">919</span> byte[] content = getRegionInfoFileContent(regionInfoForFs);<a name="line.919"></a> +<span class="sourceLineNo">920</span> writeRegionInfoOnFilesystem(content, useTempDir);<a name="line.920"></a> +<span class="sourceLineNo">921</span> }<a name="line.921"></a> +<span class="sourceLineNo">922</span><a name="line.922"></a> +<span class="sourceLineNo">923</span> /**<a name="line.923"></a> +<span class="sourceLineNo">924</span> * Write out an info file under the region directory. Useful recovering mangled regions.<a name="line.924"></a> +<span class="sourceLineNo">925</span> * @param regionInfoContent serialized version of the {@link RegionInfo}<a name="line.925"></a> +<span class="sourceLineNo">926</span> * @param useTempDir indicate whether or not using the region .tmp dir for a safer file creation.<a name="line.926"></a> +<span class="sourceLineNo">927</span> */<a name="line.927"></a> +<span class="sourceLineNo">928</span> private void writeRegionInfoOnFilesystem(final byte[] regionInfoContent,<a name="line.928"></a> +<span class="sourceLineNo">929</span> final boolean useTempDir) throws IOException {<a name="line.929"></a> +<span class="sourceLineNo">930</span> Path regionInfoFile = new Path(getRegionDir(), REGION_INFO_FILE);<a name="line.930"></a> +<span class="sourceLineNo">931</span> if (useTempDir) {<a name="line.931"></a> +<span class="sourceLineNo">932</span> // Create in tmpDir and then move into place in case we crash after<a name="line.932"></a> +<span class="sourceLineNo">933</span> // create but before close. If we don't successfully close the file,<a name="line.933"></a> +<span class="sourceLineNo">934</span> // subsequent region reopens will fail the below because create is<a name="line.934"></a> +<span class="sourceLineNo">935</span> // registered in NN.<a name="line.935"></a> +<span class="sourceLineNo">936</span><a name="line.936"></a> +<span class="sourceLineNo">937</span> // And then create the file<a name="line.937"></a> +<span class="sourceLineNo">938</span> Path tmpPath = new Path(getTempDir(), REGION_INFO_FILE);<a name="line.938"></a> +<span class="sourceLineNo">939</span><a name="line.939"></a> +<span class="sourceLineNo">940</span> // If datanode crashes or if the RS goes down just before the close is called while trying to<a name="line.940"></a> +<span class="sourceLineNo">941</span> // close the created regioninfo file in the .tmp directory then on next<a name="line.941"></a> +<span class="sourceLineNo">942</span> // creation we will be getting AlreadyCreatedException.<a name="line.942"></a> +<span class="sourceLineNo">943</span> // Hence delete and create the file if exists.<a name="line.943"></a> +<span class="sourceLineNo">944</span> if (FSUtils.isExists(fs, tmpPath)) {<a name="line.944"></a> +<span class="sourceLineNo">945</span> FSUtils.delete(fs, tmpPath, true);<a name="line.945"></a> +<span class="sourceLineNo">946</span> }<a name="line.946"></a> +<span class="sourceLineNo">947</span><a name="line.947"></a> +<span class="sourceLineNo">948</span> // Write HRI to a file in case we need to recover hbase:meta<a name="line.948"></a> +<span class="sourceLineNo">949</span> writeRegionInfoFileContent(conf, fs, tmpPath, regionInfoContent);<a name="line.949"></a> +<span class="sourceLineNo">950</span><a name="line.950"></a> +<span class="sourceLineNo">951</span> // Move the created file to the original path<a name="line.951"></a> +<span class="sourceLineNo">952</span> if (fs.exists(tmpPath) && !rename(tmpPath, regionInfoFile)) {<a name="line.952"></a> +<span class="sourceLineNo">953</span> throw new IOException("Unable to rename " + tmpPath + " to " + regionInfoFile);<a name="line.953"></a> +<span class="sourceLineNo">954</span> }<a name="line.954"></a> +<span class="sourceLineNo">955</span> } else {<a name="line.955"></a> +<span class="sourceLineNo">956</span> // Write HRI to a file in case we need to recover hbase:meta<a name="line.956"></a> +<span class="sourceLineNo">957</span> writeRegionInfoFileContent(conf, fs, regionInfoFile, regionInfoContent);<a name="line.957"></a> +<span class="sourceLineNo">958</span> }<a name="line.958"></a> +<span class="sourceLineNo">959</span> }<a name="line.959"></a> +<span class="sourceLineNo">960</span><a name="line.960"></a> +<span class="sourceLineNo">961</span> /**<a name="line.961"></a> +<span class="sourceLineNo">962</span> * Create a new Region on file-system.<a name="line.962"></a> +<span class="sourceLineNo">963</span> * @param conf the {@link Configuration} to use<a name="line.963"></a> +<span class="sourceLineNo">964</span> * @param fs {@link FileSystem} from which to add the region<a name="line.964"></a> +<span class="sourceLineNo">965</span> * @param tableDir {@link Path} to where the table is being stored<a name="line.965"></a> +<span class="sourceLineNo">966</span> * @param regionInfo {@link RegionInfo} for region to be added<a name="line.966"></a> +<span class="sourceLineNo">967</span> * @th
<TRUNCATED>
