HBASE-26328 Clone snapshot doesn't load reference files into FILE SFT impl (#3749)

Signed-off-by: Duo Zhang <[email protected]>

Author: wchevreuil

hbase-server/src/main/java/org/apache/hadoop/hbase/io/HFileLink.java

@@ -201,7 +201,6 @@ public static boolean isHFileLink(final Path path) {
     return isHFileLink(path.getName());
   }
 
-
   /**
    * @param fileName File name to check.
    * @return True if the path is a HFileLink.
@@ -322,10 +321,10 @@ public static String createHFileLinkName(final TableName tableName,
    * @param dstFamilyPath - Destination path (table/region/cf/)
    * @param hfileRegionInfo - Linked HFile Region Info
    * @param hfileName - Linked HFile name
-   * @return true if the file is created, otherwise the file exists.
-   * @throws IOException on file or parent directory creation failure
+   * @return the file link name.
+   * @throws IOException on file or parent directory creation failure.
    */
-  public static boolean create(final Configuration conf, final FileSystem fs,
+  public static String create(final Configuration conf, final FileSystem fs,
       final Path dstFamilyPath, final RegionInfo hfileRegionInfo,
       final String hfileName) throws IOException {
     return create(conf, fs, dstFamilyPath, hfileRegionInfo, hfileName, true);
@@ -343,10 +342,10 @@ public static boolean create(final Configuration conf, final FileSystem fs,
    * @param hfileRegionInfo - Linked HFile Region Info
    * @param hfileName - Linked HFile name
    * @param createBackRef - Whether back reference should be created. Defaults to true.
-   * @return true if the file is created, otherwise the file exists.
-   * @throws IOException on file or parent directory creation failure
+   * @return the file link name.
+   * @throws IOException on file or parent directory creation failure.
    */
-  public static boolean create(final Configuration conf, final FileSystem fs,
+  public static String create(final Configuration conf, final FileSystem fs,
       final Path dstFamilyPath, final RegionInfo hfileRegionInfo,
       final String hfileName, final boolean createBackRef) throws IOException {
     TableName linkedTable = hfileRegionInfo.getTable();
@@ -366,17 +365,18 @@ public static boolean create(final Configuration conf, final FileSystem fs,
    * @param linkedTable - Linked Table Name
    * @param linkedRegion - Linked Region Name
    * @param hfileName - Linked HFile name
-   * @return true if the file is created, otherwise the file exists.
-   * @throws IOException on file or parent directory creation failure
+   * @return the file link name.
+   * @throws IOException on file or parent directory creation failure.
    */
-  public static boolean create(final Configuration conf, final FileSystem fs,
+  public static String create(final Configuration conf, final FileSystem fs,
       final Path dstFamilyPath, final TableName linkedTable, final String linkedRegion,
       final String hfileName) throws IOException {
     return create(conf, fs, dstFamilyPath, linkedTable, linkedRegion, hfileName, true);
   }
 
   /**
-   * Create a new HFileLink
+   * Create a new HFileLink. In the event of link creation failure, this method throws an
+   * IOException, so that the calling upper laying can decide on how to proceed with this.
    *
    * <p>It also adds a back-reference to the hfile back-reference directory
    * to simplify the reference-count and the cleaning process.
@@ -388,10 +388,10 @@ public static boolean create(final Configuration conf, final FileSystem fs,
    * @param linkedRegion - Linked Region Name
    * @param hfileName - Linked HFile name
    * @param createBackRef - Whether back reference should be created. Defaults to true.
-   * @return true if the file is created, otherwise the file exists.
-   * @throws IOException on file or parent directory creation failure
+   * @return the file link name.
+   * @throws IOException on file or parent directory creation failure.
    */
-  public static boolean create(final Configuration conf, final FileSystem fs,
+  public static String create(final Configuration conf, final FileSystem fs,
       final Path dstFamilyPath, final TableName linkedTable, final String linkedRegion,
       final String hfileName, final boolean createBackRef) throws IOException {
     String familyName = dstFamilyPath.getName();
@@ -417,10 +417,10 @@ public static boolean create(final Configuration conf, final FileSystem fs,
    * @param linkedRegion - Linked Region Name
    * @param hfileName - Linked HFile name
    * @param createBackRef - Whether back reference should be created. Defaults to true.
-   * @return true if the file is created, otherwise the file exists.
+   * @return the file link name.
    * @throws IOException on file or parent directory creation failure
    */
-  public static boolean create(final Configuration conf, final FileSystem fs,
+  public static String create(final Configuration conf, final FileSystem fs,
       final Path dstFamilyPath, final String familyName, final String dstTableName,
       final String dstRegionName, final TableName linkedTable, final String linkedRegion,
       final String hfileName, final boolean createBackRef) throws IOException {
@@ -444,7 +444,9 @@ public static boolean create(final Configuration conf, final FileSystem fs,
     }
     try {
       // Create the link
-      return fs.createNewFile(new Path(dstFamilyPath, name));
+      if (fs.createNewFile(new Path(dstFamilyPath, name))) {
+        return name;
+      }
     } catch (IOException e) {
       LOG.error("couldn't create the link=" + name + " for " + dstFamilyPath, e);
       // Revert the reference if the link creation failed
@@ -453,25 +455,8 @@ public static boolean create(final Configuration conf, final FileSystem fs,
       }
       throw e;
     }
-  }
-
-  /**
-   * Create a new HFileLink starting from a hfileLink name
-   *
-   * <p>It also adds a back-reference to the hfile back-reference directory
-   * to simplify the reference-count and the cleaning process.
-   *
-   * @param conf {@link Configuration} to read for the archive directory name
-   * @param fs {@link FileSystem} on which to write the HFileLink
-   * @param dstFamilyPath - Destination path (table/region/cf/)
-   * @param hfileLinkName - HFileLink name (it contains hfile-region-table)
-   * @return true if the file is created, otherwise the file exists.
-   * @throws IOException on file or parent directory creation failure
-   */
-  public static boolean createFromHFileLink(final Configuration conf, final FileSystem fs,
-      final Path dstFamilyPath, final String hfileLinkName)
-          throws IOException {
-    return createFromHFileLink(conf, fs, dstFamilyPath, hfileLinkName, true);
+    throw new IOException("File link=" + name + " already exists under " +
+      dstFamilyPath + " folder.");
   }
 
   /**
@@ -485,10 +470,10 @@ public static boolean createFromHFileLink(final Configuration conf, final FileSy
    * @param dstFamilyPath - Destination path (table/region/cf/)
    * @param hfileLinkName - HFileLink name (it contains hfile-region-table)
    * @param createBackRef - Whether back reference should be created. Defaults to true.
-   * @return true if the file is created, otherwise the file exists.
-   * @throws IOException on file or parent directory creation failure
+   * @return the file link name.
+   * @throws IOException on file or parent directory creation failure.
    */
-  public static boolean createFromHFileLink(final Configuration conf, final FileSystem fs,
+  public static String createFromHFileLink(final Configuration conf, final FileSystem fs,
       final Path dstFamilyPath, final String hfileLinkName, final boolean createBackRef)
           throws IOException {
     Matcher m = LINK_NAME_PATTERN.matcher(hfileLinkName);

hbase-server/src/main/java/org/apache/hadoop/hbase/master/procedure/CloneSnapshotProcedure.java

@@ -40,7 +40,6 @@
 import org.apache.hadoop.hbase.master.RegionState;
 import org.apache.hadoop.hbase.master.assignment.AssignmentManager;
 import org.apache.hadoop.hbase.master.procedure.CreateTableProcedure.CreateHdfsRegions;
-import org.apache.hadoop.hbase.mob.MobUtils;
 import org.apache.hadoop.hbase.monitoring.MonitoredTask;
 import org.apache.hadoop.hbase.monitoring.TaskMonitor;
 import org.apache.hadoop.hbase.procedure2.ProcedureStateSerializer;
@@ -453,56 +452,25 @@ private List<RegionInfo> createFsLayout(
     List<RegionInfo> newRegions,
     final CreateHdfsRegions hdfsRegionHandler) throws IOException {
     final MasterFileSystem mfs = env.getMasterServices().getMasterFileSystem();
-    final Path tempdir = mfs.getTempDir();
 
     // 1. Create Table Descriptor
     // using a copy of descriptor, table will be created enabling first
-    final Path tempTableDir = CommonFSUtils.getTableDir(tempdir, tableDescriptor.getTableName());
-    if (CommonFSUtils.isExists(mfs.getFileSystem(), tempTableDir)) {
+    final Path tableDir = CommonFSUtils.getTableDir(mfs.getRootDir(),
+      tableDescriptor.getTableName());
+    if (CommonFSUtils.isExists(mfs.getFileSystem(), tableDir)) {
       // if the region dirs exist, will cause exception and unlimited retry (see HBASE-24546)
-      LOG.warn("temp table dir already exists on disk: {}, will be deleted.", tempTableDir);
-      CommonFSUtils.deleteDirectory(mfs.getFileSystem(), tempTableDir);
+      LOG.warn("temp table dir already exists on disk: {}, will be deleted.", tableDir);
+      CommonFSUtils.deleteDirectory(mfs.getFileSystem(), tableDir);
     }
-    ((FSTableDescriptors) (env.getMasterServices().getTableDescriptors()))
-      .createTableDescriptorForTableDirectory(tempTableDir,
-        TableDescriptorBuilder.newBuilder(tableDescriptor).build(), false);
+    ((FSTableDescriptors)(env.getMasterServices().getTableDescriptors()))
+      .createTableDescriptorForTableDirectory(tableDir,
+              TableDescriptorBuilder.newBuilder(tableDescriptor).build(), false);
 
     // 2. Create Regions
     newRegions = hdfsRegionHandler.createHdfsRegions(
-      env, tempdir, tableDescriptor.getTableName(), newRegions);
-
-    // 3. Move Table temp directory to the hbase root location
-    CreateTableProcedure.moveTempDirectoryToHBaseRoot(env, tableDescriptor, tempTableDir);
-    // Move Table temp mob directory to the hbase root location
-    Path tempMobTableDir = MobUtils.getMobTableDir(tempdir, tableDescriptor.getTableName());
-    if (mfs.getFileSystem().exists(tempMobTableDir)) {
-      moveTempMobDirectoryToHBaseRoot(mfs, tableDescriptor, tempMobTableDir);
-    }
-    return newRegions;
-  }
+      env, mfs.getRootDir(), tableDescriptor.getTableName(), newRegions);
 
-  /**
-   * Move table temp mob directory to the hbase root location
-   * @param mfs The master file system
-   * @param tableDescriptor The table to operate on
-   * @param tempMobTableDir The temp mob directory of table
-   * @throws IOException If failed to move temp mob dir to hbase root dir
-   */
-  private void moveTempMobDirectoryToHBaseRoot(final MasterFileSystem mfs,
-      final TableDescriptor tableDescriptor, final Path tempMobTableDir) throws IOException {
-    FileSystem fs = mfs.getFileSystem();
-    final Path tableMobDir =
-        MobUtils.getMobTableDir(mfs.getRootDir(), tableDescriptor.getTableName());
-    if (!fs.delete(tableMobDir, true) && fs.exists(tableMobDir)) {
-      throw new IOException("Couldn't delete mob table " + tableMobDir);
-    }
-    if (!fs.exists(tableMobDir.getParent())) {
-      fs.mkdirs(tableMobDir.getParent());
-    }
-    if (!fs.rename(tempMobTableDir, tableMobDir)) {
-      throw new IOException("Unable to move mob table from temp=" + tempMobTableDir
-          + " to hbase root=" + tableMobDir);
-    }
+    return newRegions;
   }
 
   /**

hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/storefiletracker/StoreFileTrackerBase.java

@@ -21,6 +21,7 @@
 
 import java.io.IOException;
 import java.util.Collection;
+
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.hbase.client.ColumnFamilyDescriptor;