[GitHub] [hive] kasakrisz commented on a change in pull request #1772: HIVE-24519: Optimize MV: Materialized views should not rebuild when tables are not modified

[GitBox <gi...@apache.org>]

kasakrisz commented on a change in pull request #1772:
URL: https://github.com/apache/hive/pull/1772#discussion_r551143401



##########
File path: ql/src/test/results/clientpositive/llap/materialized_view_rebuild_2.q.out
##########
@@ -0,0 +1,171 @@
+PREHOOK: query: create table t1(col0 int) stored as orc TBLPROPERTIES ('transactional'='true')
+PREHOOK: type: CREATETABLE
+PREHOOK: Output: database:default
+PREHOOK: Output: default@t1
+POSTHOOK: query: create table t1(col0 int) stored as orc TBLPROPERTIES ('transactional'='true')
+POSTHOOK: type: CREATETABLE
+POSTHOOK: Output: database:default
+POSTHOOK: Output: default@t1
+PREHOOK: query: insert into t1(col0) values(1)
+PREHOOK: type: QUERY
+PREHOOK: Input: _dummy_database@_dummy_table
+PREHOOK: Output: default@t1
+POSTHOOK: query: insert into t1(col0) values(1)
+POSTHOOK: type: QUERY
+POSTHOOK: Input: _dummy_database@_dummy_table
+POSTHOOK: Output: default@t1
+POSTHOOK: Lineage: t1.col0 SCRIPT []
+PREHOOK: query: create materialized view mat1 as
+select col0 from t1 where col0 = 1
+PREHOOK: type: CREATE_MATERIALIZED_VIEW
+PREHOOK: Input: default@t1
+PREHOOK: Output: database:default
+PREHOOK: Output: default@mat1
+POSTHOOK: query: create materialized view mat1 as
+select col0 from t1 where col0 = 1
+POSTHOOK: type: CREATE_MATERIALIZED_VIEW
+POSTHOOK: Input: default@t1
+POSTHOOK: Output: database:default
+POSTHOOK: Output: default@mat1
+Materialized view default.mat1 is up to date. Cancelling rebuild.

Review comment:
       This message belongs to the next command output:
   ```
   explain
   alter materialized view mat1 rebuild;
   ```




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