deniskuzZ commented on code in PR #3307:
URL: https://github.com/apache/hive/pull/3307#discussion_r896696959


##########
standalone-metastore/metastore-server/src/main/java/org/apache/hadoop/hive/metastore/txn/TxnHandler.java:
##########
@@ -5297,6 +5303,28 @@ is performed on that db (e.g. show tables, created 
table, etc).
             return response;
           }
         }
+
+        if (checkForConcurrentCtas && isValidTxn(txnId)) {

Review Comment:
   embed this check with above zeroWaitReadEnabled
   ````
   if ((zeroWaitReadEnabled || isExclusiveCTAS) && isValidTxn(txnId)) {
   ....
   if (lockType == LockType.SHARED_READ || isExclusiveCTAS) {
   ....
   ````



##########
standalone-metastore/metastore-server/src/main/java/org/apache/hadoop/hive/metastore/txn/TxnHandler.java:
##########
@@ -5297,6 +5303,28 @@ is performed on that db (e.g. show tables, created 
table, etc).
             return response;
           }
         }
+
+        if (checkForConcurrentCtas && isValidTxn(txnId)) {

Review Comment:
   embed this check with the above zeroWaitReadEnabled
   ````
   if ((zeroWaitReadEnabled || isExclusiveCTAS) && isValidTxn(txnId)) {
   ....
        if (lockType == LockType.SHARED_READ || isExclusiveCTAS) {
   ....
   ````



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