rakeshadr commented on code in PR #3348:
URL: https://github.com/apache/ozone/pull/3348#discussion_r867637968
##########
hadoop-ozone/tools/src/main/java/org/apache/hadoop/ozone/freon/OmBucketReadWriteFileOps.java:
##########
@@ -149,6 +155,11 @@ public Void call() throws Exception {
contentGenerator = new ContentGenerator(fileSizeInBytes, bufferSize);
timer = getMetrics().timer("file-create");
+ mbs = ManagementFactory.getPlatformMBeanServer();
+ bean = new ObjectName(
Review Comment:
@tanvipenumudy after reading this mbean output, now the metric value stores
a combined read/write lock held/waiting time for all the resources. For
example, we can't differentiate whether BUCKET_LOCK is consuming long time than
the fine grained KEY_PATH_LOCK.
Probably, we need to introduce resource specific metrics to get more
granular view about the exact resource(BUCKET, KEY_PATH etc) consumption
samples, isn't it?
I've added this comment here to track/remember this point. IMHO, please
raise a separate jira sub-task to discuss and provide resource specific metrics
values. We can come back to this task once we finish the basic structure.
##########
hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/OzoneManagerLockMXBean.java:
##########
@@ -0,0 +1,36 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with this
+ * work for additional information regarding copyright ownership. The ASF
+ * licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * <p>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p>
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
under
+ * the License.
+ */
+
+package org.apache.hadoop.ozone.om;
+
+import org.apache.hadoop.hdds.annotation.InterfaceAudience;
+
+/**
+ * This is the JMX management interface for OzoneManagerLock information.
+ */
[email protected]
+public interface OzoneManagerLockMXBean {
+
+ String getReadLockWaitingTimeMsStat();
Review Comment:
Please add javadoc for these functions/APIs
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