HBASE-4436 Remove and convert @deprecated RemoteExceptionHandler.decodeRemoteException calls (Talat Uyarer)

hbase-client/src/main/java/org/apache/hadoop/hbase/RemoteExceptionHandler.java

@@ -1,120 +0,0 @@
-/**
- *
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.apache.hadoop.hbase;
-
-import org.apache.hadoop.classification.InterfaceAudience;
-import org.apache.hadoop.ipc.RemoteException;
-
-import java.io.IOException;
-import java.lang.reflect.Constructor;
-import java.lang.reflect.InvocationTargetException;
-
-/**
- * An immutable class which contains a static method for handling
- * org.apache.hadoop.ipc.RemoteException exceptions.
- */
-@InterfaceAudience.Private
-public class RemoteExceptionHandler {
-  /* Not instantiable */
-  private RemoteExceptionHandler() {super();}
-
-  /**
-   * Examine passed Throwable.  See if its carrying a RemoteException. If so,
-   * run {@link #decodeRemoteException(RemoteException)} on it.  Otherwise,
-   * pass back <code>t</code> unaltered.
-   * @param t Throwable to examine.
-   * @return Decoded RemoteException carried by <code>t</code> or
-   * <code>t</code> unaltered.
-   */
-  public static Throwable checkThrowable(final Throwable t) {
-    Throwable result = t;
-    if (t instanceof RemoteException) {
-      try {
-        result =
-          RemoteExceptionHandler.decodeRemoteException((RemoteException)t);
-      } catch (Throwable tt) {
-        result = tt;
-      }
-    }
-    return result;
-  }
-
-  /**
-   * Examine passed IOException.  See if its carrying a RemoteException. If so,
-   * run {@link #decodeRemoteException(RemoteException)} on it.  Otherwise,
-   * pass back <code>e</code> unaltered.
-   * @param e Exception to examine.
-   * @return Decoded RemoteException carried by <code>e</code> or
-   * <code>e</code> unaltered.
-   */
-  public static IOException checkIOException(final IOException e) {
-    Throwable t = checkThrowable(e);
-    return t instanceof IOException? (IOException)t: new IOException(t);
-  }
-
-  /**
-   * Converts org.apache.hadoop.ipc.RemoteException into original exception,
-   * if possible. If the original exception is an Error or a RuntimeException,
-   * throws the original exception.
-   *
-   * @param re original exception
-   * @return decoded RemoteException if it is an instance of or a subclass of
-   *         IOException, or the original RemoteException if it cannot be decoded.
-   *
-   * @throws IOException indicating a server error ocurred if the decoded
-   *         exception is not an IOException. The decoded exception is set as
-   *         the cause.
-   * @deprecated Use {@link RemoteException#unwrapRemoteException()} instead.
-   * In fact we should look into deprecating this whole class - St.Ack 2010929
-   */
-  public static IOException decodeRemoteException(final RemoteException re)
-  throws IOException {
-    IOException i = re;
-
-    try {
-      Class<?> c = Class.forName(re.getClassName());
-
-      Class<?>[] parameterTypes = { String.class };
-      Constructor<?> ctor = c.getConstructor(parameterTypes);
-
-      Object[] arguments = { re.getMessage() };
-      Throwable t = (Throwable) ctor.newInstance(arguments);
-
-      if (t instanceof IOException) {
-        i = (IOException) t;
-      } else {
-        i = new IOException("server error");
-        i.initCause(t);
-        throw i;
-      }
-
-    } catch (ClassNotFoundException x) {
-      // continue
-    } catch (NoSuchMethodException x) {
-      // continue
-    } catch (IllegalAccessException x) {
-      // continue
-    } catch (InvocationTargetException x) {
-      // continue
-    } catch (InstantiationException x) {
-      // continue
-    }
-    return i;
-  }
-}

hbase-client/src/main/java/org/apache/hadoop/hbase/client/ScannerCallable.java

@@ -35,7 +35,6 @@ import org.apache.hadoop.hbase.HRegionLocation;
 import org.apache.hadoop.hbase.KeyValueUtil;
 import org.apache.hadoop.hbase.NotServingRegionException;
 import org.apache.hadoop.hbase.RegionLocations;
-import org.apache.hadoop.hbase.RemoteExceptionHandler;
 import org.apache.hadoop.hbase.ServerName;
 import org.apache.hadoop.hbase.TableName;
 import org.apache.hadoop.hbase.UnknownScannerException;
@@ -236,7 +235,7 @@ public class ScannerCallable extends RegionServerCallable<Result[]> {
           }
           IOException ioe = e;
           if (e instanceof RemoteException) {
-            ioe = RemoteExceptionHandler.decodeRemoteException((RemoteException)e);
+            ioe = ((RemoteException) e).unwrapRemoteException();
           }
           if (logScannerActivity && (ioe instanceof UnknownScannerException)) {
             try {

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

@@ -36,15 +36,14 @@ import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.fs.PathFilter;
 import org.apache.hadoop.hbase.ClusterId;
-import org.apache.hadoop.hbase.TableName;
 import org.apache.hadoop.hbase.HColumnDescriptor;
 import org.apache.hadoop.hbase.HConstants;
 import org.apache.hadoop.hbase.HRegionInfo;
 import org.apache.hadoop.hbase.HTableDescriptor;
 import org.apache.hadoop.hbase.InvalidFamilyOperationException;
-import org.apache.hadoop.hbase.RemoteExceptionHandler;
 import org.apache.hadoop.hbase.Server;
 import org.apache.hadoop.hbase.ServerName;
+import org.apache.hadoop.hbase.TableName;
 import org.apache.hadoop.hbase.backup.HFileArchiver;
 import org.apache.hadoop.hbase.exceptions.DeserializationException;
 import org.apache.hadoop.hbase.fs.HFileSystem;
@@ -56,6 +55,7 @@ import org.apache.hadoop.hbase.util.Bytes;
 import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;
 import org.apache.hadoop.hbase.util.FSTableDescriptors;
 import org.apache.hadoop.hbase.util.FSUtils;
+import org.apache.hadoop.ipc.RemoteException;
 import org.apache.zookeeper.KeeperException;
 
 /**
@@ -507,7 +507,8 @@ public class MasterFileSystem {
       setInfoFamilyCachingForMeta(true);
       HRegion.closeHRegion(meta);
     } catch (IOException e) {
-      e = RemoteExceptionHandler.checkIOException(e);
+        e = e instanceof RemoteException ?
+                ((RemoteException)e).unwrapRemoteException() : e;
       LOG.error("bootstrap", e);
       throw e;
     }

hbase-server/src/main/java/org/apache/hadoop/hbase/master/cleaner/CleanerChore.java

@@ -28,9 +28,9 @@ import org.apache.hadoop.fs.FileStatus;
 import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.hbase.Chore;
-import org.apache.hadoop.hbase.RemoteExceptionHandler;
 import org.apache.hadoop.hbase.Stoppable;
 import org.apache.hadoop.hbase.util.FSUtils;
+import org.apache.hadoop.ipc.RemoteException;
 
 import com.google.common.annotations.VisibleForTesting;
 import com.google.common.collect.ImmutableSet;
@@ -123,7 +123,8 @@ public abstract class CleanerChore<T extends FileCleanerDelegate> extends Chore
       FileStatus[] files = FSUtils.listStatus(this.fs, this.oldFileDir);
       checkAndDeleteEntries(files);
     } catch (IOException e) {
-      e = RemoteExceptionHandler.checkIOException(e);
+      e = e instanceof RemoteException ?
+              ((RemoteException)e).unwrapRemoteException() : e;
       LOG.warn("Error while cleaning the logs", e);
     }
   }
@@ -182,7 +183,8 @@ public abstract class CleanerChore<T extends FileCleanerDelegate> extends Chore
       // if the directory still has children, we can't delete it, so we are done
       if (!allChildrenDeleted) return false;
     } catch (IOException e) {
-      e = RemoteExceptionHandler.checkIOException(e);
+        e = e instanceof RemoteException ?
+                ((RemoteException)e).unwrapRemoteException() : e;
     	LOG.warn("Error while listing directory: " + dir, e);
       // couldn't list directory, so don't try to delete, and don't return success
       return false;
@@ -261,7 +263,8 @@ public abstract class CleanerChore<T extends FileCleanerDelegate> extends Chore
               + ", but couldn't. Run cleaner chain and attempt to delete on next pass.");
         }
       } catch (IOException e) {
-        e = RemoteExceptionHandler.checkIOException(e);
+        e = e instanceof RemoteException ?
+                  ((RemoteException)e).unwrapRemoteException() : e;
         LOG.warn("Error while deleting: " + filePath, e);
       }
     }

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

@@ -37,11 +37,11 @@ import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.conf.Configuration;
-import org.apache.hadoop.hbase.RemoteExceptionHandler;
 import org.apache.hadoop.hbase.regionserver.compactions.CompactionContext;
 import org.apache.hadoop.hbase.regionserver.compactions.CompactionRequest;
 import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;
 import org.apache.hadoop.hbase.util.Pair;
+import org.apache.hadoop.ipc.RemoteException;
 import org.apache.hadoop.util.StringUtils;
 
 import com.google.common.base.Preconditions;
@@ -486,7 +486,8 @@ public class CompactSplitThread implements CompactionRequestor {
           }
         }
       } catch (IOException ex) {
-        IOException remoteEx = RemoteExceptionHandler.checkIOException(ex);
+        IOException remoteEx =
+            ex instanceof RemoteException ? ((RemoteException) ex).unwrapRemoteException() : ex;
         LOG.error("Compaction failed " + this, remoteEx);
         if (remoteEx != ex) {
           LOG.info("Compaction failed at original callstack: " + formatStackTrace(ex));

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

@@ -64,15 +64,14 @@ import org.apache.hadoop.hbase.HBaseConfiguration;
 import org.apache.hadoop.hbase.HConstants;
 import org.apache.hadoop.hbase.HRegionInfo;
 import org.apache.hadoop.hbase.HealthCheckChore;
+import org.apache.hadoop.hbase.MetaTableAccessor;
 import org.apache.hadoop.hbase.NotServingRegionException;
-import org.apache.hadoop.hbase.RemoteExceptionHandler;
 import org.apache.hadoop.hbase.ServerName;
 import org.apache.hadoop.hbase.Stoppable;
 import org.apache.hadoop.hbase.TableDescriptors;
 import org.apache.hadoop.hbase.TableName;
 import org.apache.hadoop.hbase.YouAreDeadException;
 import org.apache.hadoop.hbase.ZNodeClearer;
-import org.apache.hadoop.hbase.MetaTableAccessor;
 import org.apache.hadoop.hbase.client.ConnectionUtils;
 import org.apache.hadoop.hbase.client.HConnection;
 import org.apache.hadoop.hbase.client.HConnectionManager;
@@ -1112,7 +1111,8 @@ public class HRegionServer extends HasThread implements
       try {
         this.hlogForMeta.close();
       } catch (Throwable e) {
-        LOG.error("Metalog close and delete failed", RemoteExceptionHandler.checkThrowable(e));
+        e = e instanceof RemoteException ? ((RemoteException) e).unwrapRemoteException() : e;
+        LOG.error("Metalog close and delete failed", e);
       }
     }
     if (this.hlog != null) {
@@ -1123,7 +1123,8 @@ public class HRegionServer extends HasThread implements
           hlog.close();
         }
       } catch (Throwable e) {
-        LOG.error("Close and delete failed", RemoteExceptionHandler.checkThrowable(e));
+        e = e instanceof RemoteException ? ((RemoteException) e).unwrapRemoteException() : e;
+        LOG.error("Close and delete failed", e);
       }
     }
   }
@@ -2623,10 +2624,11 @@ public class HRegionServer extends HasThread implements
       LOG.debug("NotServingRegionException; " + t.getMessage());
       return t;
     }
+    Throwable e = t instanceof RemoteException ? ((RemoteException) t).unwrapRemoteException() : t;
     if (msg == null) {
-      LOG.error("", RemoteExceptionHandler.checkThrowable(t));
+      LOG.error("", e);
     } else {
-      LOG.error(msg, RemoteExceptionHandler.checkThrowable(t));
+      LOG.error(msg, e);
     }
     if (!rpcServices.checkOOME(t)) {
       checkFileSystem();

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

@@ -56,7 +56,6 @@ import org.apache.hadoop.hbase.HConstants;
 import org.apache.hadoop.hbase.HRegionInfo;
 import org.apache.hadoop.hbase.KeyValue;
 import org.apache.hadoop.hbase.KeyValueUtil;
-import org.apache.hadoop.hbase.RemoteExceptionHandler;
 import org.apache.hadoop.hbase.TableName;
 import org.apache.hadoop.hbase.client.Scan;
 import org.apache.hadoop.hbase.io.compress.Compression;
@@ -87,6 +86,7 @@ import org.apache.hadoop.hbase.util.ClassSize;
 import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;
 import org.apache.hadoop.hbase.util.Pair;
 import org.apache.hadoop.hbase.util.ReflectionUtils;
+import org.apache.hadoop.ipc.RemoteException;
 import org.apache.hadoop.util.StringUtils;
 
 import com.google.common.annotations.VisibleForTesting;
@@ -1615,7 +1615,8 @@ public class HStore implements Store {
         this.fs.removeStoreFiles(this.getColumnFamilyName(), compactedFiles);
       }
     } catch (IOException e) {
-      e = RemoteExceptionHandler.checkIOException(e);
+      e = e instanceof RemoteException ?
+                ((RemoteException)e).unwrapRemoteException() : e;
       LOG.error("Failed removing compacted files in " + this +
         ". Files we were trying to remove are " + compactedFiles.toString() +
         "; some of them may have been already removed", e);

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

@@ -18,22 +18,26 @@
  */
 package org.apache.hadoop.hbase.regionserver;
 
+import java.io.IOException;
+import java.util.concurrent.atomic.AtomicBoolean;
+import java.util.concurrent.locks.ReentrantLock;
+
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.fs.Path;
-import org.apache.hadoop.hbase.*;
+import org.apache.hadoop.hbase.HConstants;
+import org.apache.hadoop.hbase.HRegionInfo;
+import org.apache.hadoop.hbase.HTableDescriptor;
+import org.apache.hadoop.hbase.Server;
 import org.apache.hadoop.hbase.regionserver.wal.FailedLogCloseException;
 import org.apache.hadoop.hbase.regionserver.wal.HLog;
 import org.apache.hadoop.hbase.regionserver.wal.HLogKey;
-import org.apache.hadoop.hbase.regionserver.wal.WALEdit;
 import org.apache.hadoop.hbase.regionserver.wal.WALActionsListener;
+import org.apache.hadoop.hbase.regionserver.wal.WALEdit;
 import org.apache.hadoop.hbase.util.Bytes;
 import org.apache.hadoop.hbase.util.HasThread;
-
+import org.apache.hadoop.ipc.RemoteException;
-import java.io.IOException;
-import java.util.concurrent.atomic.AtomicBoolean;
-import java.util.concurrent.locks.ReentrantLock;
 
 /**
  * Runs periodically to determine if the HLog should be rolled.
@@ -105,7 +109,7 @@ class LogRoller extends HasThread implements WALActionsListener {
       } catch (IOException ex) {
         // Abort if we get here.  We probably won't recover an IOE. HBASE-1132
         server.abort("IOE in log roller",
-          RemoteExceptionHandler.checkIOException(ex));
+          ex instanceof RemoteException ? ((RemoteException) ex).unwrapRemoteException() : ex);
       } catch (Exception ex) {
         LOG.error("Log rolling failed", ex);
         server.abort("Log rolling failed", ex);

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

@@ -43,15 +43,15 @@ import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.hbase.DroppedSnapshotException;
 import org.apache.hadoop.hbase.HConstants;
-import org.apache.hadoop.hbase.RemoteExceptionHandler;
 import org.apache.hadoop.hbase.util.Bytes;
+import org.apache.hadoop.hbase.util.Counter;
 import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;
 import org.apache.hadoop.hbase.util.HasThread;
 import org.apache.hadoop.hbase.util.Threads;
+import org.apache.hadoop.ipc.RemoteException;
 import org.apache.hadoop.util.StringUtils;
 import org.htrace.Trace;
 import org.htrace.TraceScope;
-import org.apache.hadoop.hbase.util.Counter;
 
 import com.google.common.base.Preconditions;
 
@@ -434,9 +434,11 @@ class MemStoreFlusher implements FlushRequester {
               this.server.compactSplitThread.requestSystemCompaction(
                   region, Thread.currentThread().getName());
             } catch (IOException e) {
+                e = e instanceof RemoteException ?
+                        ((RemoteException)e).unwrapRemoteException() : e;
             	LOG.error(
                 "Cache flush failed for region " + Bytes.toStringBinary(region.getRegionName()),
-                RemoteExceptionHandler.checkIOException(e));
+                e);
             }
           }
         }
@@ -494,9 +496,11 @@ class MemStoreFlusher implements FlushRequester {
       server.abort("Replay of HLog required. Forcing server shutdown", ex);
       return false;
     } catch (IOException ex) {
-      LOG.error("Cache flush failed" +
+      ex = ex instanceof RemoteException ? ((RemoteException) ex).unwrapRemoteException() : ex;
-        (region != null ? (" for region " + Bytes.toStringBinary(region.getRegionName())) : ""),
+      LOG.error(
-        RemoteExceptionHandler.checkIOException(ex));
+        "Cache flush failed"
+            + (region != null ? (" for region " + Bytes.toStringBinary(region.getRegionName()))
+                : ""), ex);
       if (!server.checkFileSystem()) {
         return false;
       }

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

@@ -23,9 +23,9 @@ import java.io.IOException;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
-import org.apache.hadoop.hbase.RemoteExceptionHandler;
 import org.apache.hadoop.hbase.master.TableLockManager.TableLock;
 import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;
+import org.apache.hadoop.ipc.RemoteException;
 import org.apache.hadoop.util.StringUtils;
 
 import com.google.common.base.Preconditions;
@@ -118,8 +118,8 @@ class RegionMergeRequest implements Runnable {
           + ". Region merge took "
           + StringUtils.formatTimeDiff(EnvironmentEdgeManager.currentTimeMillis(), startTime));
     } catch (IOException ex) {
-      LOG.error("Merge failed " + this,
+      ex = ex instanceof RemoteException ? ((RemoteException) ex).unwrapRemoteException() : ex;
-          RemoteExceptionHandler.checkIOException(ex));
+      LOG.error("Merge failed " + this, ex);
       server.checkFileSystem();
     } finally {
       releaseTableLock();

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

@@ -23,9 +23,9 @@ import java.io.IOException;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
-import org.apache.hadoop.hbase.RemoteExceptionHandler;
 import org.apache.hadoop.hbase.master.TableLockManager.TableLock;
 import org.apache.hadoop.hbase.util.Bytes;
+import org.apache.hadoop.ipc.RemoteException;
 import org.apache.hadoop.util.StringUtils;
 
 import com.google.common.base.Preconditions;
@@ -112,7 +112,8 @@ class SplitRequest implements Runnable {
           + st.getSecondDaughter().getRegionNameAsString() + ". Split took "
           + StringUtils.formatTimeDiff(System.currentTimeMillis(), startTime));
     } catch (IOException ex) {
-      LOG.error("Split failed " + this, RemoteExceptionHandler.checkIOException(ex));
+      ex = ex instanceof RemoteException ? ((RemoteException) ex).unwrapRemoteException() : ex;
+      LOG.error("Split failed " + this, ex);
       server.checkFileSystem();
     } finally {
       if (this.parent.getCoprocessorHost() != null) {
@@ -120,7 +121,7 @@ class SplitRequest implements Runnable {
           this.parent.getCoprocessorHost().postCompleteSplit();
         } catch (IOException io) {
           LOG.error("Split failed " + this,
-              RemoteExceptionHandler.checkIOException(io));
+            io instanceof RemoteException ? ((RemoteException) io).unwrapRemoteException() : io);
         }
       }
       releaseTableLock();

hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/wal/HLogSplitter.java

@@ -56,15 +56,14 @@ import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.hbase.Cell;
 import org.apache.hadoop.hbase.CellScanner;
 import org.apache.hadoop.hbase.CellUtil;
-import org.apache.hadoop.hbase.CoordinatedStateManager;
 import org.apache.hadoop.hbase.CoordinatedStateException;
+import org.apache.hadoop.hbase.CoordinatedStateManager;
 import org.apache.hadoop.hbase.HBaseConfiguration;
 import org.apache.hadoop.hbase.HConstants;
 import org.apache.hadoop.hbase.HRegionInfo;
 import org.apache.hadoop.hbase.HRegionLocation;
 import org.apache.hadoop.hbase.KeyValue;
 import org.apache.hadoop.hbase.KeyValueUtil;
-import org.apache.hadoop.hbase.RemoteExceptionHandler;
 import org.apache.hadoop.hbase.ServerName;
 import org.apache.hadoop.hbase.TableName;
 import org.apache.hadoop.hbase.TableNotFoundException;
@@ -112,6 +111,7 @@ import org.apache.hadoop.hbase.util.Threads;
 import org.apache.hadoop.hbase.zookeeper.ZKSplitLog;
 import org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher;
 import org.apache.hadoop.io.MultipleIOException;
+import org.apache.hadoop.ipc.RemoteException;
 
 import com.google.common.base.Preconditions;
 import com.google.common.collect.Lists;
@@ -361,7 +361,7 @@ public class HLogSplitter {
       ZKSplitLog.markCorrupted(rootDir, logfile.getPath().getName(), fs);
       isCorrupted = true;
     } catch (IOException e) {
-      e = RemoteExceptionHandler.checkIOException(e);
+      e = e instanceof RemoteException ? ((RemoteException) e).unwrapRemoteException() : e;
       throw e;
     } finally {
       LOG.debug("Finishing writing output logs and closing down.");
@@ -1276,7 +1276,8 @@ public class HLogSplitter {
         wap.incrementEdits(editsCount);
         wap.incrementNanoTime(System.nanoTime() - startTime);
       } catch (IOException e) {
-        e = RemoteExceptionHandler.checkIOException(e);
+          e = e instanceof RemoteException ?
+                  ((RemoteException)e).unwrapRemoteException() : e;
         LOG.fatal(" Got while writing log entry to log", e);
         throw e;
       }
@@ -1625,7 +1626,7 @@ public class HLogSplitter {
         rsw.incrementEdits(actions.size());
         rsw.incrementNanoTime(System.nanoTime() - startTime);
       } catch (IOException e) {
-        e = RemoteExceptionHandler.checkIOException(e);
+        e = e instanceof RemoteException ? ((RemoteException) e).unwrapRemoteException() : e;
         LOG.fatal(" Got while writing log entry to log", e);
         throw e;
       }

hbase-server/src/main/java/org/apache/hadoop/hbase/util/FSUtils.java

@@ -60,7 +60,6 @@ import org.apache.hadoop.hbase.HColumnDescriptor;
 import org.apache.hadoop.hbase.HConstants;
 import org.apache.hadoop.hbase.HDFSBlocksDistribution;
 import org.apache.hadoop.hbase.HRegionInfo;
-import org.apache.hadoop.hbase.RemoteExceptionHandler;
 import org.apache.hadoop.hbase.TableName;
 import org.apache.hadoop.hbase.exceptions.DeserializationException;
 import org.apache.hadoop.hbase.fs.HFileSystem;
@@ -73,6 +72,7 @@ import org.apache.hadoop.hdfs.DistributedFileSystem;
 import org.apache.hadoop.hdfs.protocol.FSConstants;
 import org.apache.hadoop.io.IOUtils;
 import org.apache.hadoop.io.SequenceFile;
+import org.apache.hadoop.ipc.RemoteException;
 import org.apache.hadoop.security.AccessControlException;
 import org.apache.hadoop.security.UserGroupInformation;
 import org.apache.hadoop.util.Progressable;
@@ -399,7 +399,8 @@ public abstract class FSUtils {
         return;
       }
     } catch (IOException e) {
-      exception = RemoteExceptionHandler.checkIOException(e);
+      exception = e instanceof RemoteException ?
+              ((RemoteException)e).unwrapRemoteException() : e;
     }
     try {
       fs.close();

hbase-server/src/main/java/org/apache/hadoop/hbase/util/HMerge.java

@@ -30,13 +30,12 @@ import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.Path;
-import org.apache.hadoop.hbase.TableName;
 import org.apache.hadoop.hbase.HConstants;
 import org.apache.hadoop.hbase.HRegionInfo;
 import org.apache.hadoop.hbase.HTableDescriptor;
-import org.apache.hadoop.hbase.RemoteExceptionHandler;
-import org.apache.hadoop.hbase.TableNotDisabledException;
 import org.apache.hadoop.hbase.MetaTableAccessor;
+import org.apache.hadoop.hbase.TableName;
+import org.apache.hadoop.hbase.TableNotDisabledException;
 import org.apache.hadoop.hbase.client.Delete;
 import org.apache.hadoop.hbase.client.HBaseAdmin;
 import org.apache.hadoop.hbase.client.HConnectable;
@@ -48,6 +47,7 @@ import org.apache.hadoop.hbase.client.ResultScanner;
 import org.apache.hadoop.hbase.regionserver.HRegion;
 import org.apache.hadoop.hbase.regionserver.wal.HLog;
 import org.apache.hadoop.hbase.regionserver.wal.HLogFactory;
+import org.apache.hadoop.ipc.RemoteException;
 
 /**
  * A non-instantiable class that has a static method capable of compacting
@@ -263,7 +263,7 @@ class HMerge {
         }
         return region;
       } catch (IOException e) {
-        e = RemoteExceptionHandler.checkIOException(e);
+        e = e instanceof RemoteException ? ((RemoteException) e).unwrapRemoteException() : e;
         LOG.error("meta scanner error", e);
         metaScanner.close();
         throw e;