HBASE-26674 Should modify filesCompacting under storeWriteLock (#4040)

Signed-off-by: Josh Elser <elserj@apache.org>

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

@@ -1229,13 +1229,14 @@ public class HStore implements Store, HeapSize, StoreConfigInformation,
     allowedOnPath = ".*/(HStore|TestHStore).java")
   void replaceStoreFiles(Collection<HStoreFile> compactedFiles, Collection<HStoreFile> result,
     boolean writeCompactionMarker) throws IOException {
-    storeEngine.replaceStoreFiles(compactedFiles, result);
+    storeEngine.replaceStoreFiles(compactedFiles, result, () -> {
+      synchronized(filesCompacting) {
+        filesCompacting.removeAll(compactedFiles);
+      }
+    });
     if (writeCompactionMarker) {
       writeCompactionWalRecord(compactedFiles, result);
     }
-    synchronized (filesCompacting) {
-      filesCompacting.removeAll(compactedFiles);
-    }
     // These may be null when the RS is shutting down. The space quota Chores will fix the Region
     // sizes later so it's not super-critical if we miss these.
     RegionServerServices rsServices = region.getRegionServerServices();

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

@@ -410,7 +410,8 @@ public abstract class StoreEngine<SF extends StoreFlusher, CP extends Compaction
     List<HStoreFile> openedFiles = openStoreFiles(toBeAddedFiles, false);
 
     // propogate the file changes to the underlying store file manager
-    replaceStoreFiles(toBeRemovedStoreFiles, openedFiles); // won't throw an exception
+    replaceStoreFiles(toBeRemovedStoreFiles, openedFiles, () -> {
+    }); // won't throw an exception
   }
 
   /**
@@ -493,12 +494,13 @@ public abstract class StoreEngine<SF extends StoreFlusher, CP extends Compaction
   }
 
   public void replaceStoreFiles(Collection<HStoreFile> compactedFiles,
-    Collection<HStoreFile> newFiles) throws IOException {
+    Collection<HStoreFile> newFiles, Runnable actionUnderLock) throws IOException {
     storeFileTracker.replace(StoreUtils.toStoreFileInfo(compactedFiles),
       StoreUtils.toStoreFileInfo(newFiles));
     writeLock();
     try {
       storeFileManager.addCompactionResults(compactedFiles, newFiles);
+      actionUnderLock.run();
     } finally {
       writeUnlock();
     }

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

@@ -1034,14 +1034,14 @@ public class TestHStore {
     // call first time after files changed
     spiedStoreEngine.refreshStoreFiles();
     assertEquals(2, this.store.getStorefilesCount());
-    verify(spiedStoreEngine, times(1)).replaceStoreFiles(any(), any());
+    verify(spiedStoreEngine, times(1)).replaceStoreFiles(any(), any(), any());
 
     // call second time
     spiedStoreEngine.refreshStoreFiles();
 
     // ensure that replaceStoreFiles is not called, i.e, the times does not change, if files are not
     // refreshed,
-    verify(spiedStoreEngine, times(1)).replaceStoreFiles(any(), any());
+    verify(spiedStoreEngine, times(1)).replaceStoreFiles(any(), any(), any());
   }
 
   private long countMemStoreScanner(StoreScanner scanner) {