[GitHub] [hadoop-ozone] bharatviswa504 opened a new pull request #316: WIP:HDDS-2680. Fix updating lastAppliedIndex in OzoneManagerStateMachine.

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

bharatviswa504 opened a new pull request #316: WIP:HDDS-2680. Fix updating lastAppliedIndex in OzoneManagerStateMachine.
URL: https://github.com/apache/hadoop-ozone/pull/316
 
 
   ## What changes were proposed in this pull request?
   
   This Jira is to fix a bug that has been caused by HDDS-2637.
   
   Now we have applyTransactionMap where we put all entries of ratisTransactionIndex before complete.
   
   And when updating lastAppliedIndex, now there is a chance that we updateLastAppliedIndex before DoubleBuffer flush has committed transactions to DB.
   
   
   Let's take 1-10 are apply transaction entries which are not flushed, 11th is indexUpdate a metadata/conf entry transaction, now when notifyIndexUpdate is called with 11, we updateLastAppliedIndex to 11. (Which we should not do) This Jira is to fix this issue.
   
   ## What is the link to the Apache JIRA
   
   https://issues.apache.org/jira/browse/HDDS-2680
   
   ## How was this patch tested?
   
   Trying to add some UT's to test this.
   

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