HDFS-13796. Allow verbosity of InMemoryLevelDBAliasMapServer to be configurable.

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSConfigKeys.java

@@ -96,6 +96,8 @@ public class DFSConfigKeys extends CommonConfigurationKeys {
   public static final int DFS_PROVIDED_ALIASMAP_INMEMORY_BATCH_SIZE_DEFAULT = 500;
   public static final String DFS_PROVIDED_ALIASMAP_INMEMORY_ENABLED = "dfs.provided.aliasmap.inmemory.enabled";
   public static final boolean DFS_PROVIDED_ALIASMAP_INMEMORY_ENABLED_DEFAULT = false;
+  public static final String DFS_PROVIDED_ALIASMAP_INMEMORY_SERVER_LOG = "dfs.provided.aliasmap.inmemory.server.log";
+  public static final boolean DFS_PROVIDED_ALIASMAP_INMEMORY_SERVER_LOG_DEFAULT = false;
 
   public static final String  DFS_DATANODE_BALANCE_BANDWIDTHPERSEC_KEY =
       HdfsClientConfigKeys.DeprecatedKeys.DFS_DATANODE_BALANCE_BANDWIDTHPERSEC_KEY;

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/aliasmap/InMemoryLevelDBAliasMapServer.java

@@ -39,6 +39,8 @@ import java.util.Optional;
 import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_PROVIDED_ALIASMAP_INMEMORY_RPC_ADDRESS;
 import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_PROVIDED_ALIASMAP_INMEMORY_RPC_ADDRESS_DEFAULT;
 import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_PROVIDED_ALIASMAP_INMEMORY_RPC_BIND_HOST;
+import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_PROVIDED_ALIASMAP_INMEMORY_SERVER_LOG;
+import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_PROVIDED_ALIASMAP_INMEMORY_SERVER_LOG_DEFAULT;
 import static org.apache.hadoop.hdfs.DFSUtil.getBindAddress;
 import static org.apache.hadoop.hdfs.protocol.proto.AliasMapProtocolProtos.*;
 import static org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.CheckedFunction2;
@@ -87,13 +89,17 @@ public class InMemoryLevelDBAliasMapServer implements InMemoryAliasMapProtocol,
         DFS_PROVIDED_ALIASMAP_INMEMORY_RPC_ADDRESS_DEFAULT,
         DFS_PROVIDED_ALIASMAP_INMEMORY_RPC_BIND_HOST);
 
+    boolean setVerbose = conf.getBoolean(
+        DFS_PROVIDED_ALIASMAP_INMEMORY_SERVER_LOG,
+        DFS_PROVIDED_ALIASMAP_INMEMORY_SERVER_LOG_DEFAULT);
+
     aliasMapServer = new RPC.Builder(conf)
         .setProtocol(AliasMapProtocolPB.class)
         .setInstance(aliasMapProtocolService)
         .setBindAddress(rpcAddress.getHostName())
         .setPort(rpcAddress.getPort())
         .setNumHandlers(1)
-        .setVerbose(true)
+        .setVerbose(setVerbose)
         .build();
 
     LOG.info("Starting InMemoryLevelDBAliasMapServer on {}", rpcAddress);

hadoop-hdfs-project/hadoop-hdfs/src/main/resources/hdfs-default.xml

@@ -4867,6 +4867,15 @@
     </description>
   </property>
 
+  <property>
+    <name>dfs.provided.aliasmap.inmemory.server.log</name>
+    <value>false</value>
+    <description>
+      Ensures that InMemoryAliasMap server logs every call to it.
+      Set to false by default.
+    </description>
+  </property>
+
   <property>
     <name>dfs.provided.aliasmap.text.delimiter</name>
     <value>,</value>