sadanand48 commented on a change in pull request #1507:
URL: https://github.com/apache/hadoop-ozone/pull/1507#discussion_r512567525



##########
File path: 
hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/OzoneManager.java
##########
@@ -1228,17 +1238,57 @@ public void restart() throws IOException {
       // Allow OM to start as Http Server failure is not fatal.
       LOG.error("OM HttpServer failed to start.", ex);
     }
-
     omRpcServer.start();
+
     isOmRpcServerRunning = true;
 
+    startTrashEmptier(configuration);
+
     registerMXBean();
 
     startJVMPauseMonitor();
     setStartTime();
     omState = State.RUNNING;
   }
 
+
+  /**
+   * @param conf
+   * @throws IOException
+   * Starts a Trash Emptier thread that does an fs.trashRoots and performs
+   * checkpointing & deletion
+   */
+  private void startTrashEmptier(Configuration conf) throws IOException {
+    long trashInterval =
+            conf.getLong(FS_TRASH_INTERVAL_KEY, FS_TRASH_INTERVAL_DEFAULT);
+    if (trashInterval == 0) {
+      return;

Review comment:
       Done.

##########
File path: 
hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/OzoneManager.java
##########
@@ -1228,17 +1238,57 @@ public void restart() throws IOException {
       // Allow OM to start as Http Server failure is not fatal.
       LOG.error("OM HttpServer failed to start.", ex);
     }
-
     omRpcServer.start();
+
     isOmRpcServerRunning = true;
 
+    startTrashEmptier(configuration);
+
     registerMXBean();
 
     startJVMPauseMonitor();
     setStartTime();
     omState = State.RUNNING;
   }
 
+
+  /**
+   * @param conf
+   * @throws IOException
+   * Starts a Trash Emptier thread that does an fs.trashRoots and performs

Review comment:
       Done




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