[GitHub] [hadoop] slfan1989 commented on pull request #5625: YARN-3660. BackPort [GPG] Federation Global Policy Generator (service hook only).

["slfan1989 (via GitHub)" <gi...@apache.org>]

slfan1989 commented on PR #5625:
URL: https://github.com/apache/hadoop/pull/5625#issuecomment-1540257264

   @goiri In the [YARN-Federation](https://hadoop.apache.org/docs/r3.3.5/hadoop-yarn/hadoop-yarn-site/Federation.html) documentation, it is mentioned that there is a `Global Policy Generator` component and its code exists in the `YARN-7402` branch. Therefore, we need to backport the code from the `YARN-7402`  branch to the `trunk` branch.
   
   I try to backport `YARN-3660` from the `YARN-7402` branch to the `trunk` branch. During the backport process, I mostly kept the original code and fixed issues flagged by Spotbugs.  
   
   I have compiled a list of Jira issues that need to be backported in the future.  I will submit `5-6` pull requests to backport this code to the trunk branch. 
   
   The list is as follows.  (These prs have already been merged into the `YARN-7402` branch.)
   - YARN-3360 [GPG] Federation Global Policy Generator (service hook only)
   - YARN-6648 [GPG] Add SubClusterCleaner in Global Policy Generator
   - YARN-7599 [GPG] ApplicationCleaner in Global Policy Generator
   - YARN-7707 [GPG] Policy generator framework
   - YARN-7708 [GPG] Load based policy generator
   - YARN-8334 [GPG] Fix potential connection leak in GPGUtils
   - YARN-8534 [GPG] Add max heap config option for Federation GPG
   - YARN-8637 [GPG] Add FederationStateStore getAppInfo API for GlobalPolicyGenerator
   - YARN-8862 [GPG] Add Yarn Registry cleanup in ApplicationCleaner
   - YARN-8934 [GPG] Add JvmMetricsInfo and pause monitor
   - YARN-9013 [GPG] fix order of steps cleaning Registry entries in ApplicationCleaner
   
   
   Can you help to merge this pr into the trunk branch? Thank you very much! I will continue to follow up the backport of other PRs.
   The issue with the unit tests is not caused by our pr.


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