This pr makes three changes to the display of complex types：
1. NULL value in complex types refers to being displayed as `null`, not `NULL`
2. struct type is displayed as "column_name": column_value
3. Time types such as `datetime` and `date`, are displayed with double quotes in complex types. like
`{1, "2023-10-26 12:12:12"}`
This pr also do a code refactor:
1. nesting_level is set to a member variable of the `DataTypeSerDe`, rather than a parameter in methods.
What's more, this pr fix a bug that fileSize is not correct, introduced by this pr: #25854
Currently, compaction is executed separately for each backend, and the reconstruction of the index during compaction leads to high CPU usage. To address this, we are introducing single replica compaction, where a specific primary replica is selected to perform compaction, and the remaining replicas fetch the compaction results from the primary replica.
The Backend (BE) requests replica information for all peers corresponding to a tablet from the Frontend (FE). This information includes the host where the replica is located and the replica_id. By calculating hash(replica_id), the replica with the smallest hash value is responsible for executing compaction, while the remaining replicas are responsible for fetching the compaction results from this replica.
The compaction task producer thread, before submitting a compaction task, checks whether the local replica should fetch from its peer. If it should, the task is then submitted to the single replica compaction thread pool.
When performing single replica compaction, the process begins by requesting rowset versions from the target replica. These rowset_versions are then compared with the local rowset versions. The first version that can be fetched is selected.
1、support stream load with json, csv format for map
2、fix olap convertor when compaction action in map column which has null
3、support select outToFile for map
4、add some regression-test
Currently not support insert {1, 'a'} into struct<f1:tinyint, f2:varchar(20)>
This commit will support implicitly cast the char type in the struct to varchar.
Add implicitly cast for struct-type.
Bug fix
fix image loading failture when create catalog with resource
When creating jdbc catalog with resource, the metadata image will failed to be loaded.
Because when loading jdbc catalog image, it will try to get resource from ResourceMgr,
but ResourceMgr has not been loaded, so NPE will be thrown.
This PR fix this bug, and refactor some logic about catalog and resource.
When loading jdbc catalog image, it will not get resource from ResourceMgr.
And now user can create catalog with resource and properties, like:
create catalog jdbc_catalog with resource jdbc_resource
properites("user" = "user1");
The properties in "properties" clause will overwrite the properties in "jdbc_resource".
force adding tinyInt1isBit=false to jdbc url
The default value of tinyInt1isBit is true, and it will cause tinyint in mysql to be bit type.
force adding tinyInt1isBit=false to jdbc url so that the tinyint in mysql will be tinyint in Doris.
Avoid calculate checksum of jdbc driver jar multiple times
Refactor
Refactor the notification logic when updating properties in resource.
When updating properties in resource, it will notify the corresponding catalog to update its own properties.
This PR change this logic. After updating properties in resource, it will only uninitialize the catalog's internal
objects such "jdbc client" or "hms client". And this objects will be re-initialized lazily.
And all properties will be got from Resource at runtime, so that it will always get the latest properties
Regression test cases
Because we add tinyInt1isBit=false to jdbc url, some of cases need to be changed.
when show databases/tables/table status where xxx, it will change a selectStmt to select result from
information_schema, it need catalog info to scan schema table, otherwise may get many
database or table info from multi catalog.
for example
mysql> show databases where schema_name='test';
+----------+
| Database |
+----------+
| test |
| test |
+----------+
MySQL [internal.test]> show tables from test where table_name='test_dc';
+----------------+
| Tables_in_test |
+----------------+
| test_dc |
| test_dc |
+----------------+
