HBASE-26068 The last assertion in TestHStore.testRefreshStoreFilesNotChanged is wrong (#3461)

Signed-off-by: Yulin Niu <niuyulin@apache.org

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

@@ -161,11 +161,6 @@ public class TestHStore {
   private static final HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility();
   private static final String DIR = TEST_UTIL.getDataTestDir("TestStore").toString();
 
-
-  /**
-   * Setup
-   * @throws IOException
-   */
   @Before
   public void setUp() throws IOException {
     qualifiers.clear();
@@ -245,7 +240,6 @@ public class TestHStore {
   /**
    * Test we do not lose data if we fail a flush and then close.
    * Part of HBase-10466
-   * @throws Exception
    */
   @Test
   public void testFlushSizeSizing() throws Exception {
@@ -347,7 +341,7 @@ public class TestHStore {
     testDeleteExpiredStoreFiles(1);
   }
 
-  /*
+  /**
    * @param minVersions the MIN_VERSIONS for the column family
    */
   public void testDeleteExpiredStoreFiles(int minVersions) throws Exception {
@@ -472,9 +466,9 @@ public class TestHStore {
   //////////////////////////////////////////////////////////////////////////////
 
   private static final int BLOCKSIZE_SMALL = 8192;
+
   /**
    * Test for hbase-1686.
-   * @throws IOException
    */
   @Test
   public void testEmptyStoreFile() throws IOException {
@@ -512,7 +506,6 @@ public class TestHStore {
 
   /**
    * Getting data from memstore only
-   * @throws IOException
    */
   @Test
   public void testGet_FromMemStoreOnly() throws IOException {
@@ -567,7 +560,6 @@ public class TestHStore {
 
   /**
    * Getting data from files only
-   * @throws IOException
    */
   @Test
   public void testGet_FromFilesOnly() throws IOException {
@@ -606,7 +598,6 @@ public class TestHStore {
 
   /**
    * Getting data from memstore and files
-   * @throws IOException
    */
   @Test
   public void testGet_FromMemStoreAndFiles() throws IOException {
@@ -735,7 +726,7 @@ public class TestHStore {
 
     public FaultyFileSystem() {
       super(new LocalFileSystem());
-      System.err.println("Creating faulty!");
+      LOG.info("Creating faulty!");
     }
 
     @Override
@@ -774,7 +765,7 @@ public class TestHStore {
 
     @Override
     public synchronized void write(byte[] buf, int offset, int length) throws IOException {
-      System.err.println("faulty stream write at pos " + getPos());
+      LOG.info("faulty stream write at pos " + getPos());
       injectFault();
       super.write(buf, offset, length);
     }
@@ -795,13 +786,9 @@ public class TestHStore {
 
   /**
    * Generate a list of KeyValues for testing based on given parameters
-   * @param timestamps
-   * @param numRows
-   * @param qualifier
-   * @param family
    * @return the rows key-value list
    */
-  List<Cell> getKeyValueSet(long[] timestamps, int numRows,
+  private List<Cell> getKeyValueSet(long[] timestamps, int numRows,
       byte[] qualifier, byte[] family) {
     List<Cell> kvList = new ArrayList<>();
     for (int i=1;i<=numRows;i++) {
@@ -1028,7 +1015,7 @@ public class TestHStore {
     assertEquals(0, this.store.getStorefilesCount());
 
     // add some data, flush
-    this.store.add(new KeyValue(row, family, qf1, 1, (byte[])null), null);
+    this.store.add(new KeyValue(row, family, qf1, 1, (byte[]) null), null);
     flush(1);
     // add one more file
     addStoreFile();
@@ -1043,17 +1030,16 @@ public class TestHStore {
     // call second time
     spiedStore.refreshStoreFiles();
 
-    //ensure that replaceStoreFiles is not called if files are not refreshed
+    // ensure that replaceStoreFiles is not called, i.e, the times does not change, if files are not
-    verify(spiedStore, times(0)).replaceStoreFiles(null, null);
+    // refreshed,
+    verify(spiedStore, times(1)).replaceStoreFiles(any(), any());
   }
 
   private long countMemStoreScanner(StoreScanner scanner) {
     if (scanner.currentScanners == null) {
       return 0;
     }
-    return scanner.currentScanners.stream()
+    return scanner.currentScanners.stream().filter(s -> !s.isFileScanner()).count();
-            .filter(s -> !s.isFileScanner())
-            .count();
   }
 
   @Test
@@ -1469,8 +1455,6 @@ public class TestHStore {
    * may change the versionedList. And the first InMemoryFlushRunnable will use the chagned
    * versionedList to remove the corresponding segments.
    * In short, there will be some segements which isn't in merge are removed.
-   * @throws IOException
-   * @throws InterruptedException
    */
   @Test
   public void testRunDoubleMemStoreCompactors() throws IOException, InterruptedException {