[GitHub] [hadoop-ozone] bharatviswa504 opened a new pull request #89: HDDS-2322. DoubleBuffer flush termination and OM shutdown's after that. Make entry returned from cache a new copy.

[GitBox <gi...@apache.org>]

bharatviswa504 opened a new pull request #89: HDDS-2322. DoubleBuffer flush termination and OM shutdown's after that. Make entry returned from cache a new copy.
URL: https://github.com/apache/hadoop-ozone/pull/89
 
 
   ## What changes were proposed in this pull request?
   
   Whenever value is returned from cache, it returns a copy object. So, that when doubleBuffer flushes, we don't see random ConcurrentModificationException errors like this.
   
   ## What is the link to the Apache JIRA
   
   https://issues.apache.org/jira/browse/HDDS-2322
   
   Please replace this section with the link to the Apache JIRA)
   
   Ran freon tests with 100K Keys multiple times, now I am not seeing the error given in Jira description. Without this patch, we will see the error. (If you are not seeing error run multiple times in non-HA or just enable ozone.om.ratis.enable, and you will see the error in the first run)
   
   **Command used for testing:**
   ozone freon rk --numOfBuckets=1 --numOfVolumes=1 --numOfKeys=100000 --keySize=0
   

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