[GitHub] [hadoop] virajjasani opened a new pull request #3824: HADOOP-18055. Async Profiler endpoint for Hadoop daemons

Wed, 22 Dec 2021 07:19:16 -0800 


virajjasani opened a new pull request #3824:
URL: https://github.com/apache/hadoop/pull/3824


   ### Description of PR
   Async profiler (https://github.com/jvm-profiling-tools/async-profiler) is a 
low overhead sampling profiler for Java that does not suffer from Safepoint 
bias problem. It features HotSpot-specific APIs to collect stack traces and to 
track memory allocations. The profiler works with OpenJDK, Oracle JDK and other 
Java runtimes based on the HotSpot JVM.
   Async profiler can also profile heap allocations, lock contention, and HW 
performance counters in addition to CPU.
   
   This PR provides Async profiler endpoint for Hadoop daemons.
   
   
   ### How was this patch tested?
   Locally. Screenshots:
   <img width="1783" alt="Screenshot 2021-12-22 at 6 54 07 PM" 
src="https://user-images.githubusercontent.com/34790606/147114605-b38d67c7-c3ae-4f90-9288-b1869ce219b4.png";>
   
   <img width="1604" alt="Screenshot 2021-12-22 at 6 55 00 PM" 
src="https://user-images.githubusercontent.com/34790606/147114629-72a25b53-183e-4aee-9c94-6a87a555180b.png";>
   
   <img width="942" alt="Screenshot 2021-12-22 at 6 55 44 PM" 
src="https://user-images.githubusercontent.com/34790606/147114631-e6cd52ea-27a0-4dc4-b6ff-2aee59e08db0.png";>
   
   <img width="1092" alt="Screenshot 2021-12-22 at 6 56 44 PM" 
src="https://user-images.githubusercontent.com/34790606/147114634-cecaa9d4-a030-4e07-a675-05c76ec02724.png";>
   
   <img width="1078" alt="Screenshot 2021-12-22 at 6 57 45 PM" 
src="https://user-images.githubusercontent.com/34790606/147114636-62957b33-511a-4304-bbb8-90a1f78d4451.png";>
   
   <img width="1507" alt="Screenshot 2021-12-22 at 6 58 57 PM" 
src="https://user-images.githubusercontent.com/34790606/147114639-de655ebf-d425-4bba-9e93-7a8fa4d33bda.png";>
   
   <img width="1161" alt="Screenshot 2021-12-22 at 6 59 34 PM" 
src="https://user-images.githubusercontent.com/34790606/147114645-04a04a18-bd0a-41ec-93da-c788d4525eb1.png";>
   
   <img width="1601" alt="Screenshot 2021-12-22 at 7 01 49 PM" 
src="https://user-images.githubusercontent.com/34790606/147114647-e376dbf8-b76d-4bf4-8e40-eb4015bc3bf1.png";>
   
   <img width="1054" alt="Screenshot 2021-12-22 at 7 02 59 PM" 
src="https://user-images.githubusercontent.com/34790606/147114649-0b9f1ff0-54d1-46fa-a354-e393eae255e4.png";>
   
   <img width="1607" alt="Screenshot 2021-12-22 at 7 03 15 PM" 
src="https://user-images.githubusercontent.com/34790606/147114651-ea424b5c-e934-419a-82b1-03fb6a634897.png";>
   
   <img width="1647" alt="Screenshot 2021-12-22 at 7 04 01 PM" 
src="https://user-images.githubusercontent.com/34790606/147114653-e54b938b-1db0-44b5-a907-c47e2c91bf83.png";>
   
   <img width="1055" alt="Screenshot 2021-12-22 at 7 07 09 PM" 
src="https://user-images.githubusercontent.com/34790606/147114654-39b20130-7fa5-4d8a-8e8f-62e8e6f44613.png";>
   
   <img width="1584" alt="Screenshot 2021-12-22 at 7 07 41 PM" 
src="https://user-images.githubusercontent.com/34790606/147114657-de708ab4-88ab-48d8-b083-13c7a2999455.png";>
   
   <img width="691" alt="Screenshot 2021-12-22 at 7 37 16 PM" 
src="https://user-images.githubusercontent.com/34790606/147114663-a975feba-4325-4137-81a1-4b013254dd35.png";>
   
   
   
   ### For code changes:
   
   - [X] Does the title or this PR starts with the corresponding JIRA issue id 
(e.g. 'HADOOP-17799. Your PR title ...')?
   


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