klcopp commented on code in PR #3172:
URL: https://github.com/apache/hive/pull/3172#discussion_r857334379
##########
ql/src/java/org/apache/hadoop/hive/ql/DriverTxnHandler.java:
##########
@@ -303,8 +303,15 @@ void setWriteIdForAcidFileSinks() throws
SemanticException, LockException {
private void allocateWriteIdForAcidAnalyzeTable() throws LockException {
if (driverContext.getPlan().getAcidAnalyzeTable() != null) {
+ //Inside a compaction transaction, only stats gathering is running which
is not requiring a new write id,
+ //and for duplicate compaction detection it is necessary to not
increment it.
+ boolean isWithinCompactionTxn =
Boolean.parseBoolean(SessionState.get().getHiveVariables().get(Constants.INSIDE_COMPACTION_TRANSACTION_FLAG));
Review Comment:
Yes, exactly!
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