HBASE-22962 Fix typo in javadoc description (#569)

Signed-off-by: Duo Zhang <zhangduo@apache.org>

Author: KangZhiDong

hbase-backup/src/main/java/org/apache/hadoop/hbase/backup/util/BackupUtils.java

@@ -535,7 +535,7 @@ public static FileStatus[] listStatus(final FileSystem fs, final Path dir,
   }
 
   /**
-   * Return the 'path' component of a Path. In Hadoop, Path is an URI. This method returns the
+   * Return the 'path' component of a Path. In Hadoop, Path is a URI. This method returns the
    * 'path' component of a Path's URI: e.g. If a Path is
    * <code>hdfs://example.org:9000/hbase_trunk/TestTable/compaction.dir</code>, this method returns
    * <code>/hbase_trunk/TestTable/compaction.dir</code>. This method is useful if you want to print

hbase-common/src/main/java/org/apache/hadoop/hbase/util/CommonFSUtils.java

@@ -337,7 +337,7 @@ public static String removeWALRootPath(Path path, final Configuration conf) thro
   }
 
   /**
-   * Return the 'path' component of a Path.  In Hadoop, Path is an URI.  This
+   * Return the 'path' component of a Path.  In Hadoop, Path is a URI.  This
    * method returns the 'path' component of a Path's URI: e.g. If a Path is
    * <code>hdfs://example.org:9000/hbase_trunk/TestTable/compaction.dir</code>,
    * this method returns <code>/hbase_trunk/TestTable/compaction.dir</code>.

hbase-http/src/main/java/org/apache/hadoop/hbase/http/jmx/JMXJsonServlet.java

@@ -119,7 +119,7 @@ public class JMXJsonServlet extends HttpServlet {
   /**
    * If query string includes 'description', then we will emit bean and attribute descriptions to
    * output IFF they are not null and IFF the description is not the same as the attribute name:
-   * i.e. specify an URL like so: /jmx?description=true
+   * i.e. specify a URL like so: /jmx?description=true
    */
   private static final String INCLUDE_DESCRIPTION = "description";
 

hbase-http/src/test/java/org/apache/hadoop/hbase/http/TestGlobalFilter.java

@@ -89,7 +89,7 @@ public void initFilter(FilterContainer container, Configuration conf) {
   public void testServletFilter() throws Exception {
     Configuration conf = new Configuration();
 
-    //start a http server with CountingFilter
+    //start an http server with CountingFilter
     conf.set(HttpServer.FILTER_INITIALIZERS_PROPERTY,
         RecordingFilter.Initializer.class.getName());
     HttpServer http = createTestServer(conf);

hbase-http/src/test/java/org/apache/hadoop/hbase/http/TestPathFilter.java

@@ -89,7 +89,7 @@ public void initFilter(FilterContainer container, Configuration conf) {
   public void testPathSpecFilters() throws Exception {
     Configuration conf = new Configuration();
 
-    //start a http server with CountingFilter
+    //start an http server with CountingFilter
     conf.set(HttpServer.FILTER_INITIALIZERS_PROPERTY,
         RecordingFilter.Initializer.class.getName());
     String[] pathSpecs = { "/path", "/path/*" };

hbase-http/src/test/java/org/apache/hadoop/hbase/http/TestServletFilter.java

@@ -101,7 +101,7 @@ private static void assertExceptionContains(String string, Throwable t) {
   public void testServletFilter() throws Exception {
     Configuration conf = new Configuration();
 
-    //start a http server with CountingFilter
+    //start an http server with CountingFilter
     conf.set(HttpServer.FILTER_INITIALIZERS_PROPERTY,
         SimpleFilter.Initializer.class.getName());
     HttpServer http = createTestServer(conf);
@@ -163,7 +163,7 @@ public void initFilter(FilterContainer container, Configuration conf) {
   @Test
   public void testServletFilterWhenInitThrowsException() throws Exception {
     Configuration conf = new Configuration();
-    // start a http server with ErrorFilter
+    // start an http server with ErrorFilter
     conf.set(HttpServer.FILTER_INITIALIZERS_PROPERTY,
         ErrorFilter.Initializer.class.getName());
     HttpServer http = createTestServer(conf);

hbase-http/src/test/java/org/apache/hadoop/hbase/http/log/TestLogLevel.java

@@ -107,7 +107,7 @@ public static void setUp() throws Exception {
     setupSSL(BASEDIR);
 
     kdc = setupMiniKdc();
-    // Create two principles: a client and a HTTP principal
+    // Create two principles: a client and an HTTP principal
     kdc.createPrincipal(KEYTAB_FILE, clientPrincipal, HTTP_PRINCIPAL);
   }
 
@@ -407,7 +407,7 @@ public void testLogLevelByHttp() throws Exception {
     try {
       testDynamicLogLevel(LogLevel.PROTOCOL_HTTP, LogLevel.PROTOCOL_HTTPS,
           false);
-      fail("A HTTPS Client should not have succeeded in connecting to a " +
+      fail("An HTTPS Client should not have succeeded in connecting to a " +
           "HTTP server");
     } catch (SSLException e) {
       exceptionShouldContains("Unrecognized SSL message", e);
@@ -426,7 +426,7 @@ public void testLogLevelByHttpWithSpnego() throws Exception {
     try {
       testDynamicLogLevel(LogLevel.PROTOCOL_HTTP, LogLevel.PROTOCOL_HTTPS,
           true);
-      fail("A HTTPS Client should not have succeeded in connecting to a " +
+      fail("An HTTPS Client should not have succeeded in connecting to a " +
           "HTTP server");
     } catch (SSLException e) {
       exceptionShouldContains("Unrecognized SSL message", e);
@@ -446,7 +446,7 @@ public void testLogLevelByHttps() throws Exception {
     try {
       testDynamicLogLevel(LogLevel.PROTOCOL_HTTPS, LogLevel.PROTOCOL_HTTP,
           false);
-      fail("A HTTP Client should not have succeeded in connecting to a " +
+      fail("An HTTP Client should not have succeeded in connecting to a " +
           "HTTPS server");
     } catch (SocketException e) {
       exceptionShouldContains("Unexpected end of file from server", e);
@@ -466,7 +466,7 @@ public void testLogLevelByHttpsWithSpnego() throws Exception {
     try {
       testDynamicLogLevel(LogLevel.PROTOCOL_HTTPS, LogLevel.PROTOCOL_HTTP,
           true);
-      fail("A HTTP Client should not have succeeded in connecting to a " +
+      fail("An HTTP Client should not have succeeded in connecting to a " +
           "HTTPS server");
     }  catch (SocketException e) {
       exceptionShouldContains("Unexpected end of file from server", e);

hbase-rest/src/main/java/org/apache/hadoop/hbase/rest/client/Response.java

@@ -29,7 +29,7 @@
 import org.apache.http.HttpResponse;
 
 /**
- * The HTTP result code, response headers, and body of a HTTP response.
+ * The HTTP result code, response headers, and body of an HTTP response.
  */
 @InterfaceAudience.Public
 public class Response {

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

@@ -40,7 +40,7 @@ public class CacheableDeserializerIdManager {
 
   /**
    * Register the given {@link Cacheable} -- usually an hfileblock instance, these implement
-   * the Cacheable Interface -- deserializer and generate an unique identifier id for it and return
+   * the Cacheable Interface -- deserializer and generate a unique identifier id for it and return
    * this as our result.
    * @return the identifier of given cacheable deserializer
    * @see #getDeserializer(int)

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

@@ -465,7 +465,7 @@ public void doGet(HttpServletRequest request,
         redirectHost = request.getServerName();
         if(!Addressing.isLocalAddress(InetAddress.getByName(redirectHost))) {
           LOG.warn("Couldn't resolve '" + redirectHost + "' as an address local to this node and '" +
-              MASTER_HOSTNAME_KEY + "' is not set; client will get a HTTP 400 response. If " +
+              MASTER_HOSTNAME_KEY + "' is not set; client will get an HTTP 400 response. If " +
               "your HBase deployment relies on client accessible names that the region server process " +
               "can't resolve locally, then you should set the previously mentioned configuration variable " +
               "to an appropriate hostname.");

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

@@ -104,7 +104,7 @@ class DummyServer implements Server {
     ZKWatcher zkw;
 
     DummyServer(ZKWatcher zkw) {
-      // an unique name in case the first run fails
+      // a unique name in case the first run fails
       hostname = System.currentTimeMillis() + ".SyncUpTool.replication.org";
       this.zkw = zkw;
     }

hbase-server/src/test/java/org/apache/hadoop/hbase/GenericTestUtils.java

@@ -59,7 +59,7 @@ public static String getMethodName() {
 
   /**
    * Generates a process-wide unique sequence number.
-   * @return an unique sequence number
+   * @return a unique sequence number
    */
   public static int uniqueSequenceId() {
     return sequence.incrementAndGet();

hbase-thrift/src/main/java/org/apache/hadoop/hbase/thrift/ThriftServer.java

@@ -324,7 +324,7 @@ protected TServlet createTServlet(TProtocolFactory protocolFactory) throws IOExc
   }
 
   /**
-   * Setup a HTTP Server using Jetty to serve calls from THttpClient
+   * Setup an HTTP Server using Jetty to serve calls from THttpClient
    *
    * @throws IOException IOException
    */

hbase-thrift/src/test/java/org/apache/hadoop/hbase/thrift2/TestThriftConnection.java

@@ -168,7 +168,7 @@ public static void setUp() throws Exception {
     httpPort = HBaseTestingUtility.randomFreePort();
     // Start a thrift server
     thriftServer = startThriftServer(thriftPort, false);
-    // Start a HTTP thrift server
+    // Start an HTTP thrift server
     thriftHttpServer = startThriftServer(httpPort, true);
     thriftConnection = createConnection(thriftPort, false);
     thriftHttpConnection = createConnection(httpPort, true);