deniskuzZ commented on code in PR #6434:
URL: https://github.com/apache/hive/pull/6434#discussion_r3139545135
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ql/src/java/org/apache/hadoop/hive/ql/ddl/view/materialized/alter/rebuild/AlterMaterializedViewRebuildAnalyzer.java:
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@@ -179,6 +179,24 @@ public void analyzeInternal(ASTNode root) throws
SemanticException {
LOG.debug("Rebuilding materialized view " +
tableName.getNotEmptyDbTable());
super.analyzeInternal(rewrittenAST);
+
+ if (!this.ctx.isExplainPlan() && AcidUtils.isTransactionalTable(mvTable)) {
Review Comment:
don't we need to take lock before rewrite?
what would happen to the 2nd concurrent request when 1st is completed -
would it be discarded?
if you need open txn before taking the lock, you can just call
`queryState.getValidTxnList()`
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