seawinde opened a new pull request, #44164:
URL: https://github.com/apache/doris/pull/44164
### What problem does this PR solve?
When materialized view is rewritten, it would use the mv metadata.
Should try to get read lock before use these metadata. or it would cause
error.
Such as mv def is as following
```sql
CREATE MATERIALIZED VIEW mv1
BUILD IMMEDIATE REFRESH COMPLETE ON MANUAL
DISTRIBUTED BY RANDOM BUCKETS 2
PROPERTIES ('replication_num' = '1')
AS
select
o_orderdate,
o_shippriority,
o_comment,
o.o_code as o_o_code,
l_orderkey,
l_partkey,
l.o_code as l_o_code
from
orders_same_col o left
join lineitem_same_col l on l_orderkey = o_orderkey
left join partsupp on ps_partkey = l_partkey and l_suppkey =
ps_suppkey;
```
When handling transparent rewriting, a MV scan plan is used for the
transparent rewrite. During the initialization of the scan plan, the partitions
of the table are retrieved, so it is necessary to attempt to acquire a read
lock on the table during initialization. If the read lock is not acquired,
subsequent operations may add or delete partitions, and in the later processing
of table partitions, calling get Partition may not retrieve the corresponding
partition, leading to data errors.
Issue Number: close #xxx
Related PR: #xxx
Problem Summary:
### Release note
None
### Check List (For Author)
- Test <!-- At least one of them must be included. -->
- [x] Regression test
- [ ] Unit Test
- [ ] Manual test (add detailed scripts or steps below)
- [ ] No need to test or manual test. Explain why:
- [ ] This is a refactor/code format and no logic has been changed.
- [x] Previous test can cover this change.
- [ ] No code files have been changed.
- [ ] Other reason <!-- Add your reason? -->
- Behavior changed:
- [x] No.
- [ ] Yes. <!-- Explain the behavior change -->
- Does this need documentation?
- [x] No.
- [ ] Yes. <!-- Add document PR link here. eg:
https://github.com/apache/doris-website/pull/1214 -->
### Check List (For Reviewer who merge this PR)
- [ ] Confirm the release note
- [ ] Confirm test cases
- [ ] Confirm document
- [ ] Add branch pick label <!-- Add branch pick label that this PR should
merge into -->
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