HDFS-5419. Fixup test-patch.sh warnings on HDFS-4949 branch. (wang)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-4949@1535607 13f79535-47bb-0310-9956-ffa450edef68

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/BatchedRemoteIterator.java

@@ -66,7 +66,7 @@ public BatchedRemoteIterator(K prevKey) {
   /**
    * Perform the actual remote request.
    * 
-   * @param key                    The key to send.
+   * @param prevKey The key to send.
    * @return A list of replies.
    */
   public abstract BatchedEntries<E> makeRequest(K prevKey) throws IOException;

hadoop-hdfs-project/hadoop-hdfs/CHANGES-HDFS-4949.txt

@@ -121,3 +121,5 @@ HDFS-4949 (Unreleased)
     HDFS-5405. Fix possible RetryCache hang for caching RPC handlers in
     FSNamesystem. (wang)
 
+    HDFS-5419. Fixup test-patch.sh warnings on HDFS-4949 branch. (wang)
+

hadoop-hdfs-project/hadoop-hdfs/dev-support/findbugsExcludeFile.xml

@@ -346,4 +346,22 @@
       <Method name="create" />
       <Bug pattern="UL_UNRELEASED_LOCK" />
     </Match>
+    <!-- Manually verified to be okay, we want to throw away the top bit here -->
+    <Match>
+      <Class name="org.apache.hadoop.hdfs.server.namenode.CachedBlock" />
+      <Method name="getReplication" />
+      <Bug pattern="ICAST_QUESTIONABLE_UNSIGNED_RIGHT_SHIFT" />
+    </Match>
+    <!-- These two are used for shutting down and kicking the CRMon, do not need strong sync -->
+    <Match>
+      <Class name="org.apache.hadoop.hdfs.server.blockmanagement.CacheReplicationMonitor" />
+      <Field name="shutdown" />
+      <Bug pattern="IS2_INCONSISTENT_SYNC" />
+    </Match>
+    <Match>
+      <Class name="org.apache.hadoop.hdfs.server.blockmanagement.CacheReplicationMonitor" />
+      <Field name="rescanImmediately" />
+      <Bug pattern="IS2_INCONSISTENT_SYNC" />
+    </Match>
+
  </FindBugsFilter>

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocol/CachePoolInfo.java

@@ -115,14 +115,18 @@ public String toString() {
       append(", ownerName:").append(ownerName).
       append(", groupName:").append(groupName).
       append(", mode:").append((mode == null) ? "null" :
-          String.format("0%03o", mode)).
+          String.format("0%03o", mode.toShort())).
       append(", weight:").append(weight).
       append("}").toString();
   }
   
   @Override
   public boolean equals(Object o) {
-    try {
+    if (o == null) { return false; }
+    if (o == this) { return true; }
+    if (o.getClass() != getClass()) {
+      return false;
+    }
     CachePoolInfo other = (CachePoolInfo)o;
     return new EqualsBuilder().
         append(poolName, other.poolName).
@@ -131,9 +135,6 @@ public boolean equals(Object o) {
         append(mode, other.mode).
         append(weight, other.weight).
         isEquals();
-    } catch (ClassCastException e) {
-      return false;
-    }
   }
 
   @Override

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocol/PathBasedCacheEntry.java

@@ -82,6 +82,8 @@ public PathBasedCacheDescriptor getDescriptor() {
   
   @Override
   public boolean equals(Object o) {
+    if (o == null) { return false; }
+    if (o == this) { return true; }
     if (o.getClass() != this.getClass()) {
       return false;
     }

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/CachedBlock.java

@@ -83,6 +83,8 @@ public int hashCode() {
 
   @Override
   public boolean equals(Object o) {
+    if (o == null) { return false; }
+    if (o == this) { return true; }
     if (o.getClass() != this.getClass()) {
       return false;
     }

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/tools/CacheAdmin.java

@@ -720,7 +720,7 @@ public int run(Configuration conf, List<String> args) throws IOException {
         return 0;
       }
       String commandName = args.get(0);
-      commandName.replaceAll("^[-]*", "");
+      commandName = commandName.replaceAll("^[-]*", "");
       Command command = determineCommand(commandName);
       if (command == null) {
         System.err.print("Sorry, I don't know the command '" +

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/tools/TableListing.java

@@ -124,23 +124,14 @@ public static class Builder {
     public Builder() {
     }
 
-    /**
-     * See {@link #addField(String, Justification, boolean)
-     */
     public Builder addField(String title) {
       return addField(title, Justification.LEFT, false);
     }
 
-    /**
-     * See {@link #addField(String, Justification, boolean)
-     */
     public Builder addField(String title, Justification justification) {
       return addField(title, justification, false);
     }
 
-    /**
-     * See {@link #addField(String, Justification, boolean)
-     */
     public Builder addField(String title, boolean wrap) {
       return addField(title, Justification.LEFT, wrap);
     }
@@ -150,7 +141,7 @@ public Builder addField(String title, boolean wrap) {
      * 
      * @param title Field title.
      * @param justification Right or left justification. Defaults to left.
-     * @Param wrapWidth Width at which to auto-wrap the content of the cell.
+     * @param wrap Width at which to auto-wrap the content of the cell.
      *        Defaults to Integer.MAX_VALUE.
      * @return This Builder object
      */

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/web/JsonUtil.java

@@ -298,36 +298,56 @@ private static Map<String, Object> toJsonMap(final DatanodeInfo datanodeinfo) {
     return m;
   }
 
+  private static int getInt(Map<?, ?> m, String key, final int defaultValue) {
+    Object value = m.get(key);
+    if (value == null) {
+      return defaultValue;
+    }
+    return (int) (long) (Long) value;
+  }
+
+  private static long getLong(Map<?, ?> m, String key, final long defaultValue) {
+    Object value = m.get(key);
+    if (value == null) {
+      return defaultValue;
+    }
+    return (long) (Long) value;
+  }
+
+  private static String getString(Map<?, ?> m, String key,
+      final String defaultValue) {
+    Object value = m.get(key);
+    if (value == null) {
+      return defaultValue;
+    }
+    return (String) value;
+  }
+
   /** Convert a Json map to an DatanodeInfo object. */
   static DatanodeInfo toDatanodeInfo(final Map<?, ?> m) {
     if (m == null) {
       return null;
     }
 
-    Object infoSecurePort = m.get("infoSecurePort");
-    if (infoSecurePort == null) {
-      infoSecurePort = 0l; // same as the default value in hdfs.proto
-    }
-
     return new DatanodeInfo(
         (String)m.get("ipAddr"),
         (String)m.get("hostName"),
         (String)m.get("storageID"),
         (int)(long)(Long)m.get("xferPort"),
         (int)(long)(Long)m.get("infoPort"),
-        (int)(long)(Long)infoSecurePort,
+        getInt(m, "infoSecurePort", 0),
         (int)(long)(Long)m.get("ipcPort"),
 
-        (Long)m.get("capacity"),
+        getLong(m, "capacity", 0l),
-        (Long)m.get("dfsUsed"),
+        getLong(m, "dfsUsed", 0l),
-        (Long)m.get("remaining"),
+        getLong(m, "remaining", 0l),
-        (Long)m.get("blockPoolUsed"),
+        getLong(m, "blockPoolUsed", 0l),
-        (Long)m.get("cacheCapacity"),
+        getLong(m, "cacheCapacity", 0l),
-        (Long)m.get("cacheUsed"),
+        getLong(m, "cacheUsed", 0l),
-        (Long)m.get("lastUpdate"),
+        getLong(m, "lastUpdate", 0l),
-        (int)(long)(Long)m.get("xceiverCount"),
+        getInt(m, "xceiverCount", 0),
-        (String)m.get("networkLocation"),
+        getString(m, "networkLocation", ""),
-        AdminStates.valueOf((String)m.get("adminState")));
+        AdminStates.valueOf(getString(m, "adminState", "NORMAL")));
   }
 
   /** Convert a DatanodeInfo[] to a Json array. */

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/web/TestJsonUtil.java

@@ -79,6 +79,8 @@ public void testToDatanodeInfoWithoutSecurePort() {
     response.put("xceiverCount", 4096l);
     response.put("networkLocation", "foo.bar.baz");
     response.put("adminState", "NORMAL");
+    response.put("cacheCapacity", 123l);
+    response.put("cacheUsed", 321l);
     
     JsonUtil.toDatanodeInfo(response);
   }