[jira] [Created] (HIVE-21036) extend OpenTxnRequest with transaction type

[Eugene Koifman (JIRA)]

Eugene Koifman created HIVE-21036:
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             Summary: extend OpenTxnRequest with transaction type
                 Key: HIVE-21036
                 URL: https://issues.apache.org/jira/browse/HIVE-21036
             Project: Hive
          Issue Type: Bug
          Components: Transactions
    Affects Versions: 4.0.0
            Reporter: Eugene Koifman


There is a {{TXN_TYPE}} field in {{TXNS}} table.

There is {{TxnHandler.TxnType}} with legal values.  It would be useful to 
TxnType a {{Thrift}}, add a new {{COMPACTION}} type object and allow setting it 
in {{OpenTxnRequest}}.

Since HIVE-20823 compactor starts a txn and should set this.

Down the road we may want to set READ_ONLY either based on parsing of the query 
or user input which can make {{TxnHandler.commitTxn}} faster.



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