Add `JSON` datatype, following features are implemented by this PR:
1. `CREATE` tables with `JSON` type columns
2. `INSERT` values containing `JSON` type value stored in `String`, which is represented as binary format(AKA `JSONB`) at BE
3. `SELECT` JSON columns
Detail design refers [DSIP-016: Support JSON type](https://cwiki.apache.org/confluence/display/DORIS/DSIP-016%3A+Support+JSON+type)
* add JSONB data storage format type
* fix JsonLiteral resolve bug
* add DataTypeJson case in data_type_factory
* add JSON syntax check in FE
* add operators for jsonb_document, currently not support comparison between any JSON type value
* add ColumnJson and DataTypeJson
* add JsonField to store JsonValue
* add JsonValue to convert String JSON to BINARY JSON and JsonLiteral case for vliteral
* add push_json for MysqlResultWriter
* JSON column need no zone_map_index
* Revert "JSON column need no zone_map_index"
This reverts commit f71d1ce1ded9dbae44a5d58abcec338816b70d79.
* add JSON writer and reader, ignore zone-map for JSON column
* add json_to_string for DataTypeJson
* add olap_data_convertor for JSON type
* add some enum
* add OLAP_FIELD_TYPE_JSON type, FieldTypeTraits for it and corresponding cases or functions
* fix column_json offsets overflow bug, format code
* remove useless TODOs, add CmpType cases for JSON type
* add license header
* format license
* format be codes
* resolve rebase master conflicts
* fix bugs for CREATE and meta related code
* refactor JsonValue constructors, add fe JSON cases and fix some bugs, reformat codes
* modification be codes along code review advice
* fix rebase conflicts with master
* add unit test for json_value and column_json
* fix rebase error
* rename json to jsonb
* fix some data convert bugs, set Mysql type to JSON
Fix bugs:
1. Fe need to send file format (e.g. parquet, orc ...) to be while processing load jobs using new scanner.
2. Try to get parquet file column type from SchemaElement.type before getting from Logical type and Converted type.
1. Remove single load channel mem limit, only use load channel mgr mem limit
2. Default load channel mgr mem limit from 50% to 80%
3. load channel mgr add soft mem limit. When the soft limit is exceeded, other threads will not hang, only current thread triggers flush
4. When exceed load channel mgr mem limit, find a load channel with the largest mem usage, continue to find a tablet channel with the largest mem usage, and try to flush 1/3 of the mem usage of this tablet channel.
1. HttpServer threads allocate bytebuffer and put them into streamload pipe, but scanner thread release them with query tracker.
2. We can assume brpc allocate memory in doris thread.
Above problems leads to wrong result of memtracker.
In the past, with legacy planner, we could only do bucket shuffle join on the join node belonging to the fragment with at least one scan node.
But, bucket shuffle join should do on each join node that left child's data distribution satisfy join's demand.
In nereids, we have data distribution info on each node. So we could enable bucket shuffle join on fragment without scan node.
This PR mainly improves some functions of the statistics module(#6370)：
1. when collecting partition statistics, filter empty partitions in advance and do not generate statistical tasks.
2. the old statistical update method may have problems when updating statistics in parallel, which has been solved.
3. optimize internal-query.
4. add test cases related to statistics.
5. modify some comments as prompted by CheckStyle.
This pull request includes some implementations of the statistics(#6370), it adds statistics module related syntax. The current syntax for collecting statistics will not collect statistics (It will collect statistics until test is stable).
- `ANALYZE` syntax(collect statistics)
```SQL
ANALYZE [[ db_name.tb_name ] [( column_name [, ...] )], ...] [PARTITIONS(...)] [ PROPERTIES(...) ]
```
> db_name.tb_name: collect table and column statistics from tb_name.
> column_name: collect column statistics from column_name.
> properties: properties of statistics jobs.
example：
```SQL
ANALYZE; -- collect statistics for all tables in the current database
ANALYZE table1(pv, citycode); -- collect pv and citycode statistics for table1
ANALYZE test.table2 PARTITIONS(partition1); -- collect statistics for partition1 of table2
```
- `SHOW ANALYZE` syntax(show statistics job info)
```SQL
SHOW ANALYZE
[TABLE | ID]
[
WHERE
[STATE = ["PENDING"|"SCHEDULING"|"RUNNING"|"FINISHED"|"FAILED"|"CANCELLED"]]
]
[ORDER BY ...]
[LIMIT limit][OFFSET offset];
```
- `SHOW TABLE STATS`syntax(show table statistics)
```SQL
SHOW TABLE STATS [ db_name.tb_name ]
```
- `SHOW COLUMN STATS` syntax(show column statistics)
```SQL
SHOW COLUMN STATS [ db_name.tb_name ]
```
This pull request includes some implementations of the statistics(#6370), it Implements sql-task to collect statistics based on internal-query(#9983).
After the ANALYZE statement is parsed, statistical tasks will be generated. The statistical tasks includes mata-task(get statistics from metadata) and sql-task(get statistics by sql query). For sql-task, it will get statistics such as the row_count, the number of null values, and the maximum value by SQL query.
For statistical tasks, also include sampling sql-task, which will be implemented in the next pr.
The like predicate process data in block perform better than in row. Currently, only not null column is optimized, nullable column will be handled later.
SELECT COUNT(*) FROM hits WHERE URL LIKE '%google%';
before: ~680ms
after: ~570ms
when enable light schema change, run test_materialized_view_hll case throw NullPointerException.
java.lang.NullPointerException: null
at org.apache.doris.analysis.SlotDescriptor.setColumn(SlotDescriptor.java:153)
at org.apache.doris.planner.OlapScanNode.updateSlotUniqueId(OlapScanNode.java:399)
Get schema from parquet reader.
The new VFileScanner need to get file schema (column name to type map) from parquet file while processing load job,
this pr is to set the type information for parquet columns.
refactor some arguments for parquet reader
1. Add new parquet context to wrap reader arguments
2. Reduced some arguments for function call
Co-authored-by: jinzhe <jinzhe@selectdb.com>
