* [Fix](TransientTask)Export tasks should only be run on the master node
Add thread name
Export Task runs only on the master node, so it is necessary to explicitly start the corresponding resources. At the same time, refactor some code to avoid circular dependencies.
* TransientTaskManager is initialized twice. Therefore, the second initialization needs to be deleted.
Query like `select * from ut_p partitions(p2) where cast(var['a'] as int) > 0` will fall through parition/tablet prunning since it's plan like
```
mysql> explain analyzed plan select * from ut_p where id = 3 and cast(var['a'] as int) = 789;
+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Explain String(Nereids Planner) |
+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| LogicalResultSink[26] ( outputExprs=[id#0, var#1] ) |
| +--LogicalProject[25] ( distinct=false, projects=[id#0, var#1], excepts=[] ) |
| +--LogicalFilter[24] ( predicates=((cast(var#4 as INT) = 789) AND (id#0 = 3)) ) |
| +--LogicalFilter[23] ( predicates=(0 = __DORIS_DELETE_SIGN__#2) ) |
| +--LogicalProject[22] ( distinct=false, projects=[id#0, var#1, __DORIS_DELETE_SIGN__#2, __DORIS_VERSION_COL__#3, element_at(var#1, 'a') AS `var`#4], excepts=[] ) |
| +--LogicalOlapScan ( qualified=regression_test_variant_p0.ut_p, indexName=<index_not_selected>, selectedIndexId=10145, preAgg=ON ) |
+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
6 rows in set (0.01 sec)
```
with an extra LogicalProject on top of LogicalOlapScan, so we should handle such case to prune parition/tablet
1. variant type core dump at call get_data_at function, as not impl this function.
2. some case can't pass at old planner and fold_constant_by_be = on.
3. open enable_fold_constant_by_be = true.
if some odbc tables use the same resource, and restore not all odbc tables, it will not retain the resource.
and check some conf for backup/restore
Signed-off-by: nextdreamblue <zxw520blue1@163.com>
* [test](neredis) Add tpch test for query rewrite by materialized view (#30870)
query rewrite by materialized view sql is as following
q1, q5, q6, q8, q9, q12, q14
the other is not supported now, will be supported later
* change code usage
both global lock in fragment mgr should only protect the map logic, could not use it to protect cancel method.
fragment ctx cancel method should be protected by a lock.
query ctx cancel --> pipelinex fragment cancel ---> query ctx cancel will dead lock.
1. And selected partition number indicator in PaimonScanNode in explain result.
2. Add raw file split and total split indicator in PaimonScanNode in explain result.
3. Opt the error msg of table valued function, print the error msg first to avoid the long msg be truncated.
Move the logic for version+1 from `unprotectedCommitTransaction `to`FinishTransaction`, as the write lock for the table was obtained in `FinishTransaction`
