Updated some logging levels, deprecated fate property value

assemble/conf/log4j2.properties

@@ -41,5 +41,8 @@ logger.shell.level = info
 logger.zookeeper.name = org.apache.zookeeper
 logger.zookeeper.level = error
 
+logger.hadoop.name = org.apache.hadoop
+logger.hadoop.level = warn
+
 rootLogger.level = info
 rootLogger.appenderRef.console.ref = STDERR

core/src/main/java/org/apache/accumulo/core/conf/Property.java

@@ -520,7 +520,7 @@ Each key is the name of the pool (can be assigned any string). Each value is a J
           operations and whose value is a pool size for those operations.
           """, "4.0.0"),
   @Deprecated(since = "4.0.0")
-  MANAGER_FATE_THREADPOOL_SIZE("manager.fate.threadpool.size", "64",
+  MANAGER_FATE_THREADPOOL_SIZE("manager.fate.threadpool.size", "",
       PropertyType.FATE_THREADPOOL_SIZE, """
           Previously, the number of threads used to run fault-tolerant executions (FATE). \
           This is no longer used in 4.0+. %s and %s are the replacement and must be \

core/src/main/java/org/apache/accumulo/core/conf/PropertyType.java

@@ -569,10 +569,12 @@ private static class FateThreadPoolSize implements Predicate<String> {
 
     @Override
     public boolean test(String s) {
-      log.warn(
-          "The manager fate thread pool size property is no longer used. See the {} and {} for "
-              + "the replacements to this property.",
-          ValidUserFateConfig.NAME, ValidMetaFateConfig.NAME);
+      if (!s.isEmpty()) {
+        log.warn(
+            "The manager fate thread pool size property is no longer used. See the {} and {} for "
+                + "the replacements to this property.",
+            ValidUserFateConfig.NAME, ValidMetaFateConfig.NAME);
+      }
       return true;
     }
   }

core/src/main/java/org/apache/accumulo/core/file/rfile/bcfile/CompressionAlgorithm.java

@@ -284,7 +284,7 @@ private CompressionCodec createNewCodec(final String codecClazzProp, final Strin
       clazz = System.getProperty(codecClazzProp, getConf().get(codecClazzProp, defaultClazz));
     }
     try {
-      LOG.info("Trying to load codec class {}", clazz);
+      LOG.debug("Trying to load codec class {}", clazz);
       Configuration config = new Configuration(getConf());
       updateBuffer(config, bufferSizeConfigOpt, bufferSize);
       return (CompressionCodec) ReflectionUtils.newInstance(Class.forName(clazz), config);

server/base/src/main/java/org/apache/accumulo/server/ServerContext.java

@@ -336,10 +336,10 @@ public static void ensureDataVersionCompatible(int dataVersion) {
   }
 
   public void waitForZookeeperAndHdfs() {
-    log.info("Attempting to talk to zookeeper");
+    log.debug("Attempting to talk to zookeeper");
     // Next line blocks until connection is established
     getZooSession();
-    log.info("ZooKeeper connected and initialized, attempting to talk to HDFS");
+    log.debug("ZooKeeper connected and initialized, attempting to talk to HDFS");
     long sleep = 1000;
     int unknownHostTries = 3;
     while (true) {
@@ -370,12 +370,12 @@ public void waitForZookeeperAndHdfs() {
           throw e;
         }
       }
-      log.info("Backing off due to failure; current sleep period is {} seconds", sleep / 1000.);
+      log.debug("Backing off due to failure; current sleep period is {} seconds", sleep / 1000.);
       sleepUninterruptibly(sleep, TimeUnit.MILLISECONDS);
       /* Back off to give transient failures more time to clear. */
       sleep = Math.min(MINUTES.toMillis(1), sleep * 2);
     }
-    log.info("Connected to HDFS");
+    log.debug("Connected to HDFS");
   }
 
   /**

server/base/src/main/java/org/apache/accumulo/server/conf/store/impl/PropStoreWatcher.java

@@ -139,7 +139,7 @@ public void process(final WatchedEvent event) {
           // terminal - never coming back.
           case Expired:
           case Closed:
-            log.info("ZooKeeper connection closed event received");
+            log.debug("ZooKeeper connection closed event received");
             zkReadyMonitor.clearReady();
             zkReadyMonitor.setClosed(); // terminal condition
             executorService.execute(

server/base/src/main/java/org/apache/accumulo/server/conf/util/ZooInfoViewer.java

@@ -120,9 +120,9 @@ public CommandGroup commandGroup() {
   public void execute(JCommander cl, ViewerOpts opts) throws Exception {
     nullWatcher = new NullWatcher(new ReadyMonitor(ZooInfoViewer.class.getSimpleName(), 20_000L));
 
-    log.info("print ids map: {}", opts.printIdMap);
-    log.info("print properties: {}", opts.printProps);
-    log.info("print instances: {}", opts.printInstanceIds);
+    log.debug("print ids map: {}", opts.printIdMap);
+    log.debug("print properties: {}", opts.printProps);
+    log.debug("print instances: {}", opts.printInstanceIds);
 
     generateReport(getServerContext(), opts);
   }