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https://issues.apache.org/jira/browse/HIVE-26375?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Krisztian Kasa resolved HIVE-26375.
-----------------------------------
Resolution: Fixed
Pushed to master. Thanks [~lpinter] and [~amansinha100] for review.
> Invalid materialized view after rebuild if source table was compacted
> ---------------------------------------------------------------------
>
> Key: HIVE-26375
> URL: https://issues.apache.org/jira/browse/HIVE-26375
> Project: Hive
> Issue Type: Bug
> Components: Materialized views, Transactions
> Reporter: Krisztian Kasa
> Assignee: Krisztian Kasa
> Priority: Major
> Labels: pull-request-available
> Fix For: 4.0.0
>
> Time Spent: 50m
> Remaining Estimate: 0h
>
> After HIVE-25656 MV state depends on the number of rows deleted/updated in
> the source tables of the view. However if one of the source tables are major
> compacted the delete delta files are no longer available and reproducing the
> rows should be deleted from the MV is no longer possible.
> {code}
> create table t1(a int, b varchar(128), c float) stored as orc TBLPROPERTIES
> ('transactional'='true');
> insert into t1(a,b, c) values (1, 'one', 1.1), (2, 'two', 2.2), (NULL, NULL,
> NULL);
> create materialized view mv1 stored as orc TBLPROPERTIES
> ('transactional'='true') as select a,b,c from t1 where a > 0 or a is null;
> update t1 set b = 'Changed' where a = 1;
> alter table t1 compact 'major';
> alter materialized view t1 rebuild;
> select * from mv1;
> {code}
> Select should result
> {code}
> "1\tChanged\t1.1",
> "2\ttwo\t2.2",
> "NULL\tNULL\tNULL"
> {code}
> but was
> {code}
> "1\tone\t1.1",
> "2\ttwo\t2.2",
> "NULL\tNULL\tNULL",
> "1\tChanged\t1.1"
> {code}
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