[GitHub] [hadoop] liubingxing commented on pull request #3907: HDFS-16432. Namenode block report add yield to avoid holding write lo…

[GitBox]

liubingxing commented on pull request #3907:
URL: https://github.com/apache/hadoop/pull/3907#issuecomment-1033432213


    Hi @sodonnel, I have tried reproducing this problem on a test cluster and 
the cpu profile of block report process look like as follow.
   
![image](https://user-images.githubusercontent.com/2844826/153139265-e0780e60-c924-4720-8680-16f1dfebac3c.png)
   
![image](https://user-images.githubusercontent.com/2844826/153139376-f57b4ab4-e153-4ca3-819c-95afb49e313f.png)
   
![image](https://user-images.githubusercontent.com/2844826/153139426-48d27252-4367-4e9f-9457-1e128789a0b1.png)
   
   It looks like most of the time were taking by the #processReportedBlock and 
#moveBlockToHead and #moveBlockToHead is necessary after removing the folded 
tree set structure.
   If you have any good suggestions, please let me know.


-- 
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.

To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org

For queries about this service, please contact Infrastructure at:
us...@infra.apache.org



---------------------------------------------------------------------
To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org
For additional commands, e-mail: common-issues-h...@hadoop.apache.org