HBASE-25458 HRegion methods cleanup (#2838)

Signed-off-by: meiyi <myimeiyi@gmail.com>

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

@@ -913,17 +913,19 @@ public class HRegion implements HeapSize, PropagatingConfigurationObserver, Regi
     }
   }
 
-  void setHTableSpecificConf() {
-    if (this.htableDescriptor == null) return;
+  private void setHTableSpecificConf() {
+    if (this.htableDescriptor == null) {
+      return;
+    }
     long flushSize = this.htableDescriptor.getMemStoreFlushSize();
 
     if (flushSize <= 0) {
       flushSize = conf.getLong(HConstants.HREGION_MEMSTORE_FLUSH_SIZE,
-          TableDescriptorBuilder.DEFAULT_MEMSTORE_FLUSH_SIZE);
+        TableDescriptorBuilder.DEFAULT_MEMSTORE_FLUSH_SIZE);
     }
     this.memstoreFlushSize = flushSize;
     long mult = conf.getLong(HConstants.HREGION_MEMSTORE_BLOCK_MULTIPLIER,
-        HConstants.DEFAULT_HREGION_MEMSTORE_BLOCK_MULTIPLIER);
+      HConstants.DEFAULT_HREGION_MEMSTORE_BLOCK_MULTIPLIER);
     this.blockingMemStoreSize = this.memstoreFlushSize * mult;
   }
 
@@ -1336,7 +1338,7 @@ public class HRegion implements HeapSize, PropagatingConfigurationObserver, Regi
    * Increase the size of mem store in this region and the size of global mem
    * store
    */
-  void incMemStoreSize(MemStoreSize mss) {
+  private void incMemStoreSize(MemStoreSize mss) {
     incMemStoreSize(mss.getDataSize(), mss.getHeapSize(), mss.getOffHeapSize(),
       mss.getCellsCount());
   }
@@ -1356,7 +1358,7 @@ public class HRegion implements HeapSize, PropagatingConfigurationObserver, Regi
       mss.getCellsCount());
   }
 
-  void decrMemStoreSize(long dataSizeDelta, long heapSizeDelta, long offHeapSizeDelta,
+  private void decrMemStoreSize(long dataSizeDelta, long heapSizeDelta, long offHeapSizeDelta,
       int cellsCountDelta) {
     if (this.rsAccounting != null) {
       rsAccounting.decGlobalMemStoreSize(dataSizeDelta, heapSizeDelta, offHeapSizeDelta);
@@ -1987,7 +1989,7 @@ public class HRegion implements HeapSize, PropagatingConfigurationObserver, Regi
     }
   }
 
-  protected ThreadPoolExecutor getStoreOpenAndCloseThreadPool(
+  private ThreadPoolExecutor getStoreOpenAndCloseThreadPool(
       final String threadNamePrefix) {
     int numStores = Math.max(1, this.htableDescriptor.getColumnFamilyCount());
     int maxThreads = Math.min(numStores,
@@ -1996,7 +1998,7 @@ public class HRegion implements HeapSize, PropagatingConfigurationObserver, Regi
     return getOpenAndCloseThreadPool(maxThreads, threadNamePrefix);
   }
 
-  protected ThreadPoolExecutor getStoreFileOpenAndCloseThreadPool(
+  ThreadPoolExecutor getStoreFileOpenAndCloseThreadPool(
       final String threadNamePrefix) {
     int numStores = Math.max(1, this.htableDescriptor.getColumnFamilyCount());
     int maxThreads = Math.max(1,
@@ -2006,7 +2008,7 @@ public class HRegion implements HeapSize, PropagatingConfigurationObserver, Regi
     return getOpenAndCloseThreadPool(maxThreads, threadNamePrefix);
   }
 
-  static ThreadPoolExecutor getOpenAndCloseThreadPool(int maxThreads,
+  private static ThreadPoolExecutor getOpenAndCloseThreadPool(int maxThreads,
       final String threadNamePrefix) {
     return Threads.getBoundedCachedThreadPool(maxThreads, 30L, TimeUnit.SECONDS,
       new ThreadFactory() {
@@ -2475,11 +2477,11 @@ public class HRegion implements HeapSize, PropagatingConfigurationObserver, Regi
     boolean isCompactionNeeded();
   }
 
-  public FlushResultImpl flushcache(boolean flushAllStores, boolean writeFlushRequestWalMarker,
+  FlushResultImpl flushcache(boolean flushAllStores, boolean writeFlushRequestWalMarker,
     FlushLifeCycleTracker tracker) throws IOException {
-    List families = null;
+    List<byte[]> families = null;
     if (flushAllStores) {
-      families = new ArrayList();
+      families = new ArrayList<>();
       families.addAll(this.getTableDescriptor().getColumnFamilyNames());
     }
     return this.flushcache(families, writeFlushRequestWalMarker, tracker);
@@ -2960,7 +2962,7 @@ public class HRegion implements HeapSize, PropagatingConfigurationObserver, Regi
 
   @edu.umd.cs.findbugs.annotations.SuppressWarnings(value="NN_NAKED_NOTIFY",
       justification="Intentional; notify is about completed flush")
-  protected FlushResultImpl internalFlushCacheAndCommit(WAL wal, MonitoredTask status,
+  FlushResultImpl internalFlushCacheAndCommit(WAL wal, MonitoredTask status,
       PrepareFlushResult prepareResult, Collection<HStore> storesToFlush) throws IOException {
     // prepare flush context is carried via PrepareFlushResult
     TreeMap<byte[], StoreFlushContext> storeFlushCtxs = prepareResult.storeFlushCtxs;
@@ -3157,12 +3159,6 @@ public class HRegion implements HeapSize, PropagatingConfigurationObserver, Regi
     }
   }
 
-  protected RegionScanner instantiateRegionScanner(Scan scan,
-      List<KeyValueScanner> additionalScanners) throws IOException {
-    return instantiateRegionScanner(scan, additionalScanners, HConstants.NO_NONCE,
-      HConstants.NO_NONCE);
-  }
-
   protected RegionScannerImpl instantiateRegionScanner(Scan scan,
       List<KeyValueScanner> additionalScanners, long nonceGroup, long nonce) throws IOException {
     if (scan.isReversed()) {
@@ -3177,9 +3173,8 @@ public class HRegion implements HeapSize, PropagatingConfigurationObserver, Regi
   /**
    * Prepare a delete for a row mutation processor
    * @param delete The passed delete is modified by this method. WARNING!
-   * @throws IOException
    */
-  public void prepareDelete(Delete delete) throws IOException {
+  private void prepareDelete(Delete delete) throws IOException {
     // Check to see if this is a deleteRow insert
     if(delete.getFamilyCellMap().isEmpty()){
       for(byte [] family : this.htableDescriptor.getColumnFamilyNames()){
@@ -3203,38 +3198,18 @@ public class HRegion implements HeapSize, PropagatingConfigurationObserver, Regi
     startRegionOperation(Operation.DELETE);
     try {
       // All edits for the given row (across all column families) must happen atomically.
-      doBatchMutate(delete);
+      mutate(delete);
     } finally {
       closeRegionOperation(Operation.DELETE);
     }
   }
 
-  /**
-   * Row needed by below method.
-   */
-  private static final byte [] FOR_UNIT_TESTS_ONLY = Bytes.toBytes("ForUnitTestsOnly");
-
-  /**
-   * This is used only by unit tests. Not required to be a public API.
-   * @param familyMap map of family to edits for the given family.
-   * @throws IOException
-   */
-  void delete(NavigableMap<byte[], List<Cell>> familyMap,
-      Durability durability) throws IOException {
-    Delete delete = new Delete(FOR_UNIT_TESTS_ONLY, HConstants.LATEST_TIMESTAMP, familyMap);
-    delete.setDurability(durability);
-    doBatchMutate(delete);
-  }
-
   /**
    * Set up correct timestamps in the KVs in Delete object.
-   * <p>Caller should have the row and region locks.
-   * @param mutation
-   * @param familyMap
-   * @param byteNow
-   * @throws IOException
+   * <p/>
+   * Caller should have the row and region locks.
    */
-  public void prepareDeleteTimestamps(Mutation mutation, Map<byte[], List<Cell>> familyMap,
+  private void prepareDeleteTimestamps(Mutation mutation, Map<byte[], List<Cell>> familyMap,
       byte[] byteNow) throws IOException {
     for (Map.Entry<byte[], List<Cell>> e : familyMap.entrySet()) {
 
@@ -3278,7 +3253,7 @@ public class HRegion implements HeapSize, PropagatingConfigurationObserver, Regi
     }
   }
 
-  void updateDeleteLatestVersionTimestamp(Cell cell, Get get, int count, byte[] byteNow)
+  private void updateDeleteLatestVersionTimestamp(Cell cell, Get get, int count, byte[] byteNow)
       throws IOException {
     List<Cell> result = get(get, false);
 
@@ -3306,7 +3281,7 @@ public class HRegion implements HeapSize, PropagatingConfigurationObserver, Regi
     startRegionOperation(Operation.PUT);
     try {
       // All edits for the given row (across all column families) must happen atomically.
-      doBatchMutate(put);
+      mutate(put);
     } finally {
       closeRegionOperation(Operation.PUT);
     }
@@ -3353,7 +3328,7 @@ public class HRegion implements HeapSize, PropagatingConfigurationObserver, Regi
      * Visitor interface for batch operations
      */
     @FunctionalInterface
-    public interface Visitor {
+    interface Visitor {
       /**
        * @param index operation index
        * @return If true continue visiting remaining entries, break otherwise
@@ -3759,14 +3734,17 @@ public class HRegion implements HeapSize, PropagatingConfigurationObserver, Regi
 
 
   /**
-   * Batch of mutation operations. Base class is shared with {@link ReplayBatchOperation} as most
-   * of the logic is same.
+   * Batch of mutation operations. Base class is shared with {@link ReplayBatchOperation} as most of
+   * the logic is same.
    */
-  static class MutationBatchOperation extends BatchOperation<Mutation> {
+  private static class MutationBatchOperation extends BatchOperation<Mutation> {
+
     private long nonceGroup;
+
     private long nonce;
+
     public MutationBatchOperation(final HRegion region, Mutation[] operations, boolean atomic,
-        long nonceGroup, long nonce) {
+      long nonceGroup, long nonce) {
       super(region, operations);
       this.atomic = atomic;
       this.nonceGroup = nonceGroup;
@@ -4401,10 +4379,12 @@ public class HRegion implements HeapSize, PropagatingConfigurationObserver, Regi
    * Batch of mutations for replay. Base class is shared with {@link MutationBatchOperation} as most
    * of the logic is same.
    */
-  static class ReplayBatchOperation extends BatchOperation<MutationReplay> {
+  private static final class ReplayBatchOperation extends BatchOperation<MutationReplay> {
+
     private long origLogSeqNum = 0;
+
     public ReplayBatchOperation(final HRegion region, MutationReplay[] operations,
-        long origLogSeqNum) {
+      long origLogSeqNum) {
       super(region, operations);
       this.origLogSeqNum = origLogSeqNum;
     }
@@ -4512,12 +4492,12 @@ public class HRegion implements HeapSize, PropagatingConfigurationObserver, Regi
     }
   }
 
-  public OperationStatus[] batchMutate(Mutation[] mutations, boolean atomic, long nonceGroup,
-      long nonce) throws IOException {
+  private OperationStatus[] batchMutate(Mutation[] mutations, boolean atomic, long nonceGroup,
+    long nonce) throws IOException {
     // As it stands, this is used for 3 things
-    //  * batchMutate with single mutation - put/delete/increment/append, separate or from
-    //    checkAndMutate.
-    //  * coprocessor calls (see ex. BulkDeleteEndpoint).
+    // * batchMutate with single mutation - put/delete/increment/append, separate or from
+    // checkAndMutate.
+    // * coprocessor calls (see ex. BulkDeleteEndpoint).
     // So nonces are not really ever used by HBase. They could be by coprocs, and checkAnd...
     return batchMutate(new MutationBatchOperation(this, mutations, atomic, nonceGroup, nonce));
   }
@@ -4525,8 +4505,12 @@ public class HRegion implements HeapSize, PropagatingConfigurationObserver, Regi
   @Override
   public OperationStatus[] batchMutate(Mutation[] mutations) throws IOException {
     // If the mutations has any Increment/Append operations, we need to do batchMutate atomically
-    boolean atomic = Arrays.stream(mutations)
-      .anyMatch(m -> m instanceof Increment || m instanceof Append);
+    boolean atomic =
+      Arrays.stream(mutations).anyMatch(m -> m instanceof Increment || m instanceof Append);
+    return batchMutate(mutations, atomic);
+  }
+
+  OperationStatus[] batchMutate(Mutation[] mutations, boolean atomic) throws IOException {
     return batchMutate(mutations, atomic, HConstants.NO_NONCE, HConstants.NO_NONCE);
   }
 
@@ -4556,24 +4540,23 @@ public class HRegion implements HeapSize, PropagatingConfigurationObserver, Regi
 
   /**
    * Perform a batch of mutations.
-   *
+   * <p/>
    * Operations in a batch are stored with highest durability specified of for all operations in a
    * batch, except for {@link Durability#SKIP_WAL}.
-   *
-   * <p>This function is called from {@link #batchReplay(WALSplitUtil.MutationReplay[], long)} with
+   * <p/>
+   * This function is called from {@link #batchReplay(WALSplitUtil.MutationReplay[], long)} with
    * {@link ReplayBatchOperation} instance and {@link #batchMutate(Mutation[])} with
-   * {@link MutationBatchOperation} instance as an argument. As the processing of replay batch
-   * and mutation batch is very similar, lot of code is shared by providing generic methods in
-   * base class {@link BatchOperation}. The logic for this method and
-   * {@link #doMiniBatchMutate(BatchOperation)} is implemented using methods in base class which
-   * are overridden by derived classes to implement special behavior.
-   *
+   * {@link MutationBatchOperation} instance as an argument. As the processing of replay batch and
+   * mutation batch is very similar, lot of code is shared by providing generic methods in base
+   * class {@link BatchOperation}. The logic for this method and
+   * {@link #doMiniBatchMutate(BatchOperation)} is implemented using methods in base class which are
+   * overridden by derived classes to implement special behavior.
    * @param batchOp contains the list of mutations
-   * @return an array of OperationStatus which internally contains the
-   *         OperationStatusCode and the exceptionMessage if any.
+   * @return an array of OperationStatus which internally contains the OperationStatusCode and the
+   *         exceptionMessage if any.
    * @throws IOException if an IO problem is encountered
    */
-  OperationStatus[] batchMutate(BatchOperation<?> batchOp) throws IOException {
+  private OperationStatus[] batchMutate(BatchOperation<?> batchOp) throws IOException {
     boolean initialized = false;
     batchOp.startRegionOperation();
     try {
@@ -4727,7 +4710,7 @@ public class HRegion implements HeapSize, PropagatingConfigurationObserver, Regi
    * Returns effective durability from the passed durability and
    * the table descriptor.
    */
-  protected Durability getEffectiveDurability(Durability d) {
+  private Durability getEffectiveDurability(Durability d) {
     return d == Durability.USE_DEFAULT ? this.regionDurability : d;
   }
 
@@ -4916,7 +4899,7 @@ public class HRegion implements HeapSize, PropagatingConfigurationObserver, Regi
           // All edits for the given row (across all column families) must happen atomically.
           Result r;
           if (mutation != null) {
-            r = doBatchMutate(mutation, true).getResult();
+            r = mutate(mutation, true).getResult();
           } else {
             r = mutateRow(rowMutations);
           }
@@ -4976,27 +4959,26 @@ public class HRegion implements HeapSize, PropagatingConfigurationObserver, Regi
     return matches;
   }
 
-  private OperationStatus doBatchMutate(Mutation mutation) throws IOException {
-    return doBatchMutate(mutation, false);
+  private OperationStatus mutate(Mutation mutation) throws IOException {
+    return mutate(mutation, false);
   }
 
-  private OperationStatus doBatchMutate(Mutation mutation, boolean atomic) throws IOException {
-    return doBatchMutate(mutation, atomic, HConstants.NO_NONCE, HConstants.NO_NONCE);
+  private OperationStatus mutate(Mutation mutation, boolean atomic) throws IOException {
+    return mutate(mutation, atomic, HConstants.NO_NONCE, HConstants.NO_NONCE);
   }
 
-  private OperationStatus doBatchMutate(Mutation mutation, boolean atomic, long nonceGroup,
-    long nonce) throws IOException {
-    OperationStatus[] batchMutate = this.batchMutate(new Mutation[]{mutation}, atomic,
-      nonceGroup, nonce);
-    if (batchMutate[0].getOperationStatusCode().equals(OperationStatusCode.SANITY_CHECK_FAILURE)) {
-      throw new FailedSanityCheckException(batchMutate[0].getExceptionMsg());
-    } else if (batchMutate[0].getOperationStatusCode().equals(OperationStatusCode.BAD_FAMILY)) {
-      throw new NoSuchColumnFamilyException(batchMutate[0].getExceptionMsg());
-    } else if (batchMutate[0].getOperationStatusCode().equals(
-      OperationStatusCode.STORE_TOO_BUSY)) {
-      throw new RegionTooBusyException(batchMutate[0].getExceptionMsg());
+  private OperationStatus mutate(Mutation mutation, boolean atomic, long nonceGroup, long nonce)
+    throws IOException {
+    OperationStatus[] status =
+      this.batchMutate(new Mutation[] { mutation }, atomic, nonceGroup, nonce);
+    if (status[0].getOperationStatusCode().equals(OperationStatusCode.SANITY_CHECK_FAILURE)) {
+      throw new FailedSanityCheckException(status[0].getExceptionMsg());
+    } else if (status[0].getOperationStatusCode().equals(OperationStatusCode.BAD_FAMILY)) {
+      throw new NoSuchColumnFamilyException(status[0].getExceptionMsg());
+    } else if (status[0].getOperationStatusCode().equals(OperationStatusCode.STORE_TOO_BUSY)) {
+      throw new RegionTooBusyException(status[0].getExceptionMsg());
     }
-    return batchMutate[0];
+    return status[0];
   }
 
   /**
@@ -5055,7 +5037,7 @@ public class HRegion implements HeapSize, PropagatingConfigurationObserver, Regi
   /**
    * Possibly rewrite incoming cell tags.
    */
-  void rewriteCellTags(Map<byte[], List<Cell>> familyMap, final Mutation m) {
+  private void rewriteCellTags(Map<byte[], List<Cell>> familyMap, final Mutation m) {
     // Check if we have any work to do and early out otherwise
     // Update these checks as more logic is added here
     if (m.getTTL() == Long.MAX_VALUE) {
@@ -5077,15 +5059,17 @@ public class HRegion implements HeapSize, PropagatingConfigurationObserver, Regi
     }
   }
 
-  /*
+  /**
    * Check if resources to support an update.
-   *
-   * We throw RegionTooBusyException if above memstore limit
-   * and expect client to retry using some kind of backoff
-  */
-  void checkResources() throws RegionTooBusyException {
+   * <p/>
+   * We throw RegionTooBusyException if above memstore limit and expect client to retry using some
+   * kind of backoff
+   */
+  private void checkResources() throws RegionTooBusyException {
     // If catalog region, do not impose resource constraints or block updates.
-    if (this.getRegionInfo().isMetaRegion()) return;
+    if (this.getRegionInfo().isMetaRegion()) {
+      return;
+    }
 
     MemStoreSize mss = this.memStoreSizing.getMemStoreSize();
     if (mss.getHeapSize() + mss.getOffHeapSize() > this.blockingMemStoreSize) {
@@ -5110,13 +5094,13 @@ public class HRegion implements HeapSize, PropagatingConfigurationObserver, Regi
   /**
    * @throws IOException Throws exception if region is in read-only mode.
    */
-  protected void checkReadOnly() throws IOException {
+  private void checkReadOnly() throws IOException {
     if (isReadOnly()) {
       throw new DoNotRetryIOException("region is read only");
     }
   }
 
-  protected void checkReadsEnabled() throws IOException {
+  private void checkReadsEnabled() throws IOException {
     if (!this.writestate.readsEnabled) {
       throw new IOException(getRegionInfo().getEncodedName()
         + ": The region's reads are disabled. Cannot serve the request");
@@ -5130,21 +5114,6 @@ public class HRegion implements HeapSize, PropagatingConfigurationObserver, Regi
     this.writestate.setReadsEnabled(readsEnabled);
   }
 
-  /**
-   * Add updates first to the wal and then add values to memstore.
-   * <p>
-   * Warning: Assumption is caller has lock on passed in row.
-   * @param edits Cell updates by column
-   */
-  void put(final byte[] row, byte[] family, List<Cell> edits) throws IOException {
-    NavigableMap<byte[], List<Cell>> familyMap;
-    familyMap = new TreeMap<>(Bytes.BYTES_COMPARATOR);
-
-    familyMap.put(family, edits);
-    Put p = new Put(row, HConstants.LATEST_TIMESTAMP, familyMap);
-    doBatchMutate(p);
-  }
-
   /**
    * @param delta If we are doing delta changes -- e.g. increment/append -- then this flag will be
    *          set; when set we will run operations that make sense in the increment/append scenario
@@ -5194,7 +5163,7 @@ public class HRegion implements HeapSize, PropagatingConfigurationObserver, Regi
     }
   }
 
-  void checkFamily(final byte[] family) throws NoSuchColumnFamilyException {
+  private void checkFamily(final byte[] family) throws NoSuchColumnFamilyException {
     if (!this.htableDescriptor.hasColumnFamily(family)) {
       throw new NoSuchColumnFamilyException(
           "Column family " + Bytes.toString(family) + " does not exist in region " + this
@@ -6055,7 +6024,7 @@ public class HRegion implements HeapSize, PropagatingConfigurationObserver, Regi
    * Currently, this method is used to drop memstore to prevent memory leak
    * when replaying recovered.edits while opening region.
    */
-  public MemStoreSize dropMemStoreContents() throws IOException {
+  private MemStoreSize dropMemStoreContents() throws IOException {
     MemStoreSizing totalFreedSize = new NonThreadSafeMemStoreSizing();
     this.updatesLock.writeLock().lock();
     try {
@@ -8106,11 +8075,11 @@ public class HRegion implements HeapSize, PropagatingConfigurationObserver, Regi
 
   /**
    * Open HRegion.
+   * <p/>
    * Calls initialize and sets sequenceId.
    * @return Returns <code>this</code>
    */
-  protected HRegion openHRegion(final CancelableProgressable reporter)
-  throws IOException {
+  private HRegion openHRegion(final CancelableProgressable reporter) throws IOException {
     try {
       // Refuse to open the region if we are missing local compression support
       TableDescriptorChecker.checkCompression(htableDescriptor);
@@ -8255,7 +8224,7 @@ public class HRegion implements HeapSize, PropagatingConfigurationObserver, Regi
     return get(get, withCoprocessor, HConstants.NO_NONCE, HConstants.NO_NONCE);
   }
 
-  public List<Cell> get(Get get, boolean withCoprocessor, long nonceGroup, long nonce)
+  private List<Cell> get(Get get, boolean withCoprocessor, long nonceGroup, long nonce)
       throws IOException {
     List<Cell> results = new ArrayList<>();
     long before =  EnvironmentEdgeManager.currentTime();
@@ -8619,7 +8588,7 @@ public class HRegion implements HeapSize, PropagatingConfigurationObserver, Regi
     startRegionOperation(Operation.APPEND);
     try {
       // All edits for the given row (across all column families) must happen atomically.
-      return doBatchMutate(append, true, nonceGroup, nonce).getResult();
+      return mutate(append, true, nonceGroup, nonce).getResult();
     } finally {
       closeRegionOperation(Operation.APPEND);
     }
@@ -8636,7 +8605,7 @@ public class HRegion implements HeapSize, PropagatingConfigurationObserver, Regi
     startRegionOperation(Operation.INCREMENT);
     try {
       // All edits for the given row (across all column families) must happen atomically.
-      return doBatchMutate(increment, true, nonceGroup, nonce).getResult();
+      return mutate(increment, true, nonceGroup, nonce).getResult();
     } finally {
       closeRegionOperation(Operation.INCREMENT);
     }
@@ -9176,15 +9145,11 @@ public class HRegion implements HeapSize, PropagatingConfigurationObserver, Regi
     flushesQueued.increment();
   }
 
-  public long getReadPoint() {
-    return getReadPoint(IsolationLevel.READ_COMMITTED);
-  }
-
   /**
    * If a handler thread is eligible for interrupt, make it ineligible. Should be paired
    * with {{@link #enableInterrupts()}.
    */
-  protected void disableInterrupts() {
+  void disableInterrupts() {
     regionLockHolders.computeIfPresent(Thread.currentThread(), (t,b) -> false);
   }
 
@@ -9192,7 +9157,7 @@ public class HRegion implements HeapSize, PropagatingConfigurationObserver, Regi
    * If a handler thread was made ineligible for interrupt via {{@link #disableInterrupts()},
    * make it eligible again. No-op if interrupts are already enabled.
    */
-  protected void enableInterrupts() {
+  void enableInterrupts() {
     regionLockHolders.computeIfPresent(Thread.currentThread(), (t,b) -> true);
   }
 
@@ -9364,7 +9329,7 @@ public class HRegion implements HeapSize, PropagatingConfigurationObserver, Regi
    * features
    * @param conf region configurations
    */
-  static void decorateRegionConfiguration(Configuration conf) {
+  private static void decorateRegionConfiguration(Configuration conf) {
     if (ReplicationUtils.isReplicationForBulkLoadDataEnabled(conf)) {
       String plugins = conf.get(CoprocessorHost.REGION_COPROCESSOR_CONF_KEY,"");
       String replicationCoprocessorClass = ReplicationObserver.class.getCanonicalName();

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

@@ -1003,8 +1003,7 @@ public class RSRpcServices implements HBaseRPCErrorHandler,
         Arrays.sort(mArray, (v1, v2) -> Row.COMPARATOR.compare(v1, v2));
       }
 
-      OperationStatus[] codes = region.batchMutate(mArray, atomic, HConstants.NO_NONCE,
-        HConstants.NO_NONCE);
+      OperationStatus[] codes = region.batchMutate(mArray, atomic);
 
       // When atomic is true, it indicates that the mutateRow API or the batch API with
       // RowMutations is called. In this case, we need to merge the results of the

hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestCompactingMemStore.java

@@ -710,8 +710,7 @@ public class TestCompactingMemStore extends TestDefaultMemStore {
     mss = memstore.getFlushableSize();
     MemStoreSnapshot snapshot = memstore.snapshot(); // push keys to snapshot
     // simulate flusher
-    region.decrMemStoreSize(mss.getDataSize(), mss.getHeapSize(), mss.getOffHeapSize(),
-      mss.getCellsCount());
+    region.decrMemStoreSize(mss);
     ImmutableSegment s = memstore.getSnapshot();
     assertEquals(7, s.getCellsCount());
     assertEquals(0, regionServicesForStores.getMemStoreSize());
@@ -788,8 +787,7 @@ public class TestCompactingMemStore extends TestDefaultMemStore {
     mss = memstore.getFlushableSize();
     MemStoreSnapshot snapshot = memstore.snapshot(); // push keys to snapshot
     // simulate flusher
-    region.decrMemStoreSize(mss.getDataSize(), mss.getHeapSize(), mss.getOffHeapSize(),
-      mss.getCellsCount());
+    region.decrMemStoreSize(mss);
     ImmutableSegment s = memstore.getSnapshot();
     assertEquals(4, s.getCellsCount());
     assertEquals(0, regionServicesForStores.getMemStoreSize());

hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestCompactingToCellFlatMapMemStore.java

@@ -282,8 +282,7 @@ public class TestCompactingToCellFlatMapMemStore extends TestCompactingMemStore
     mss = memstore.getFlushableSize();
     MemStoreSnapshot snapshot = memstore.snapshot(); // push keys to snapshot
     // simulate flusher
-    region.decrMemStoreSize(mss.getDataSize(), mss.getHeapSize(), mss.getOffHeapSize(),
-      mss.getCellsCount());
+    region.decrMemStoreSize(mss);
     ImmutableSegment s = memstore.getSnapshot();
     assertEquals(4, s.getCellsCount());
     assertEquals(0, regionServicesForStores.getMemStoreSize());

hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestDefaultMemStore.java

@@ -26,7 +26,9 @@ import java.io.IOException;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
+import java.util.NavigableMap;
 import java.util.Objects;
+import java.util.TreeMap;
 import java.util.concurrent.atomic.AtomicLong;
 import java.util.concurrent.atomic.AtomicReference;
 import org.apache.hadoop.conf.Configuration;
@@ -971,28 +973,23 @@ public class TestDefaultMemStore {
   }
 
   /**
-   * Inserts a new region's meta information into the passed
-   * <code>meta</code> region. Used by the HMaster bootstrap code adding
-   * new table to hbase:meta table.
-   *
+   * Inserts a new region's meta information into the passed <code>meta</code> region.
    * @param meta hbase:meta HRegion to be updated
    * @param r HRegion to add to <code>meta</code>
-   *
-   * @throws IOException
    */
-  public static void addRegionToMETA(final HRegion meta, final HRegion r) throws IOException {
-    meta.checkResources();
+  private static void addRegionToMETA(final HRegion meta, final HRegion r) throws IOException {
     // The row key is the region name
     byte[] row = r.getRegionInfo().getRegionName();
     final long now = EnvironmentEdgeManager.currentTime();
     final List<Cell> cells = new ArrayList<>(2);
-    cells.add(new KeyValue(row, HConstants.CATALOG_FAMILY,
-      HConstants.REGIONINFO_QUALIFIER, now, RegionInfo.toByteArray(r.getRegionInfo())));
+    cells.add(new KeyValue(row, HConstants.CATALOG_FAMILY, HConstants.REGIONINFO_QUALIFIER, now,
+      RegionInfo.toByteArray(r.getRegionInfo())));
     // Set into the root table the version of the meta table.
-    cells.add(new KeyValue(row, HConstants.CATALOG_FAMILY,
-      HConstants.META_VERSION_QUALIFIER, now,
+    cells.add(new KeyValue(row, HConstants.CATALOG_FAMILY, HConstants.META_VERSION_QUALIFIER, now,
       Bytes.toBytes(HConstants.META_VERSION)));
-    meta.put(row, HConstants.CATALOG_FAMILY, cells);
+    NavigableMap<byte[], List<Cell>> familyMap = new TreeMap<>(Bytes.BYTES_COMPARATOR);
+    familyMap.put(HConstants.CATALOG_FAMILY, cells);
+    meta.put(new Put(row, HConstants.LATEST_TIMESTAMP, familyMap));
   }
 
   private class EnvironmentEdgeForMemstoreTest implements EnvironmentEdge {

hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestHRegion.java

@@ -26,6 +26,7 @@ import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertThrows;
 import static org.junit.Assert.assertTrue;
 import static org.junit.Assert.fail;
 import static org.mockito.ArgumentMatchers.any;
@@ -43,7 +44,6 @@ import static org.mockito.Mockito.when;
 import java.io.IOException;
 import java.io.InterruptedIOException;
 import java.math.BigDecimal;
-import java.nio.charset.StandardCharsets;
 import java.security.PrivilegedExceptionAction;
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -137,7 +137,6 @@ import org.apache.hadoop.hbase.io.hfile.HFile;
 import org.apache.hadoop.hbase.monitoring.MonitoredRPCHandler;
 import org.apache.hadoop.hbase.monitoring.MonitoredTask;
 import org.apache.hadoop.hbase.monitoring.TaskMonitor;
-import org.apache.hadoop.hbase.regionserver.HRegion.MutationBatchOperation;
 import org.apache.hadoop.hbase.regionserver.HRegion.RegionScannerImpl;
 import org.apache.hadoop.hbase.regionserver.Region.Operation;
 import org.apache.hadoop.hbase.regionserver.Region.RowLock;
@@ -1679,9 +1678,7 @@ public class TestHRegion {
     long syncs = prepareRegionForBachPut(puts, source, false);
 
     // 1. Straight forward case, should succeed
-    MutationBatchOperation batchOp = new MutationBatchOperation(region, puts, true,
-        HConstants.NO_NONCE, HConstants.NO_NONCE);
-    OperationStatus[] codes = this.region.batchMutate(batchOp);
+    OperationStatus[] codes = this.region.batchMutate(puts, true);
     assertEquals(10, codes.length);
     for (int i = 0; i < 10; i++) {
       assertEquals(OperationStatusCode.SUCCESS, codes[i].getOperationStatusCode());
@@ -1695,15 +1692,11 @@ public class TestHRegion {
     MultithreadedTestUtil.TestContext ctx = new MultithreadedTestUtil.TestContext(CONF);
     final AtomicReference<IOException> retFromThread = new AtomicReference<>();
     final CountDownLatch finishedPuts = new CountDownLatch(1);
-    final MutationBatchOperation finalBatchOp = new MutationBatchOperation(region, puts, true,
-        HConstants
-        .NO_NONCE,
-        HConstants.NO_NONCE);
     TestThread putter = new TestThread(ctx) {
       @Override
       public void doWork() throws IOException {
         try {
-          region.batchMutate(finalBatchOp);
+          region.batchMutate(puts, true);
         } catch (IOException ioe) {
           LOG.error("test failed!", ioe);
           retFromThread.set(ioe);
@@ -1730,10 +1723,8 @@ public class TestHRegion {
     // 3. Exception thrown in validation
     LOG.info("Next a batch put with one invalid family");
     puts[5].addColumn(Bytes.toBytes("BAD_CF"), qual, value);
-    batchOp = new MutationBatchOperation(region, puts, true, HConstants.NO_NONCE,
-        HConstants.NO_NONCE);
     thrown.expect(NoSuchColumnFamilyException.class);
-    this.region.batchMutate(batchOp);
+    this.region.batchMutate(puts, true);
   }
 
   @Test
@@ -3172,23 +3163,19 @@ public class TestHRegion {
     List<Cell> kvs = new ArrayList<>();
     kvs.add(new KeyValue(row1, fam4, null, null));
 
+    byte[] forUnitTestsOnly = Bytes.toBytes("ForUnitTestsOnly");
+
     // testing existing family
-    byte[] family = fam2;
     NavigableMap<byte[], List<Cell>> deleteMap = new TreeMap<>(Bytes.BYTES_COMPARATOR);
-    deleteMap.put(family, kvs);
-    region.delete(deleteMap, Durability.SYNC_WAL);
+    deleteMap.put(fam2, kvs);
+    region.delete(new Delete(forUnitTestsOnly, HConstants.LATEST_TIMESTAMP, deleteMap));
 
     // testing non existing family
-    boolean ok = false;
-    family = fam4;
-    try {
-      deleteMap = new TreeMap<>(Bytes.BYTES_COMPARATOR);
-      deleteMap.put(family, kvs);
-      region.delete(deleteMap, Durability.SYNC_WAL);
-    } catch (Exception e) {
-      ok = true;
-    }
-    assertTrue("Family " + new String(family, StandardCharsets.UTF_8) + " does exist", ok);
+    NavigableMap<byte[], List<Cell>> deleteMap2 = new TreeMap<>(Bytes.BYTES_COMPARATOR);
+    deleteMap2.put(fam4, kvs);
+    assertThrows("Family " + Bytes.toString(fam4) + " does exist",
+      NoSuchColumnFamilyException.class,
+      () -> region.delete(new Delete(forUnitTestsOnly, HConstants.LATEST_TIMESTAMP, deleteMap2)));
   }
 
   @Test
@@ -3549,6 +3536,8 @@ public class TestHRegion {
     byte[] col2 = Bytes.toBytes("col2");
     byte[] col3 = Bytes.toBytes("col3");
 
+    byte[] forUnitTestsOnly = Bytes.toBytes("ForUnitTestsOnly");
+
     // Setting up region
     this.region = initHRegion(tableName, method, CONF, fam1);
     // Building checkerList
@@ -3559,12 +3548,12 @@ public class TestHRegion {
 
     NavigableMap<byte[], List<Cell>> deleteMap = new TreeMap<>(Bytes.BYTES_COMPARATOR);
     deleteMap.put(fam1, kvs);
-    region.delete(deleteMap, Durability.SYNC_WAL);
+    region.delete(new Delete(forUnitTestsOnly, HConstants.LATEST_TIMESTAMP, deleteMap));
 
     // extract the key values out the memstore:
     // This is kinda hacky, but better than nothing...
     long now = System.currentTimeMillis();
-    AbstractMemStore memstore = (AbstractMemStore)region.getStore(fam1).memstore;
+    AbstractMemStore memstore = (AbstractMemStore) region.getStore(fam1).memstore;
     Cell firstCell = memstore.getActive().first();
     assertTrue(firstCell.getTimestamp() <= now);
     now = firstCell.getTimestamp();