tarak271 opened a new pull request, #4805:
URL: https://github.com/apache/hive/pull/4805

   …s ABORTED transactions in NOTIFICATION_LOG
   
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   ### What changes were proposed in this pull request?
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   Abort Notification is not getting logged for the transactions that are being 
aborted due to timeout. In the current implementation, these transactions which 
are replicated will only get removed after 11 days or as configured value in 
hive.repl.txn.timeout. If there happens to be a lot of aborted transactions, 
they will get accumulated causing overhead for other queries that involve 
querying TXNS table in the target cluster.
   
   Proposed solution is to add ABORT event in TxnHandler.performTimeOuts() that 
can help replicate the abort event and there by getting txn deleted in Target 
environment 
   
   ### Why are the changes needed?
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   Please clarify why the changes are needed. For instance,
     1. If you propose a new API, clarify the use case for a new API.
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   Improve performance by reducing unwanted overhead
   
   ### Does this PR introduce _any_ user-facing change?
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the documentation fix.
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the released Hive versions or within the unreleased branches such as master.
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   No
   ### Is the change a dependency upgrade?
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   No
   
   ### How was this patch tested?
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   Unit test cases were added


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