In some cases, the query plan thrift structure of a query may be very large
(for example, when there are many columns in SQL), resulting in a large number
of "send fragment timeout" errors.
This PR adds an FE config to control whether to transmit the query plan in a compressed format.
Using compressed format transmission can reduce the size by ~50%. But it may reduce
the concurrency by ~10%. Therefore, in the high concurrency small query scenario,
you can choose to turn off compaction.
Support hdfs in select outfile clause without broker.
This PR implement a HDFS writer in BE which is used to write HDFS file directly without using broker.
Also the hdfs outfile clause syntax check has been added in FE.
The syntax:
```
select * from xx into outfile "hdfs://user/outfile_" format as csv
properties ("hdfs.fs.dafultFS" = "xxx", "hdfs.hdfs_user" = "xxx");
```
Note that all hdfs configurations need to carry a prefix `hdfs.`.
1. Fix a memory leak in `collect_iterator.cpp` (Fix#6700)
2. Add a new BE config `max_segment_num_per_rowset` to limit the num of segment in new rowset.(Fix#6701)
3. Make the error msg of stream load more friendly.
This pr mainly supports
1. Export query result sets concurrently
2. Query result set export supports s3 protocol
Among them, there are several preconditions for concurrently exporting query result sets
1. Enable concurrent export variables
2. The query itself can be exported concurrently
(some queries containing sort nodes at the top level cannot be exported concurrently)
3. Export the s3 protocol used instead of the broker
After exporting the result set concurrently,
the file prefix is changed to outfile_{query_instance_id}_filenumber.{file_format}
Origin stream load column order transformation is unclear , a user is struggling for a long time in this part ,so i modified some expressions to make it clearer.
for issue #6474
```sql
create table test.table1 like test.table with rollup r1,r2 -- copy some rollup
create table test.table1 like test.table with rollup all -- copy all rollup
create table test.table1 like test.table -- only copy base table
```
fix#6447
1. FE master regularly triggers the remove operation
2. After the master completes the removal of deleteInfo, it is synchronized to the Follower through editlog for remove
3. When the DeleteInfo creation time is longer than the current time, it will be cleaned up, which is determined by the `delete_info_keep_max_second` configuration
Implement the lower_case_table_names variable of mysql. The value meaning is as follows:
0: the table names are case-sensitive.
1: table names are stored in lowercase and comparisons are not case sensitive.
2: table names are stored as given but compared case-insensitively.
Encapsulate some http interfaces for better management and maintenance of doris clusters.
The http interface includes getting cluster connection information, node information, node configuration information, batch modifying node configuration, and getting query profile.
For details, please refer to the document:
`docs/zh-CN/administrator-guide/http-actions/fe/manager/`
- Make load_parallelism configurable.
- Different clusters should be configured with different load_parallelism values.
- Some user don't know how to set load_parallelism, or don't know the best load_parallelism value.
SHOW DATA SKEW FROM tbl PARTITION(p1)
to view the data distribution of a specified partition
```
mysql> admin show data skew from tbl1 partition(tbl1);
+-----------+-------------+-------+---------+
| BucketIdx | AvgDataSize | Graph | Percent |
+-----------+-------------+-------+---------+
| 0 | 0 | | 100.00% |
+-----------+-------------+-------+---------+
1 row in set (0.01 sec)
```
Also modify the result of `admin show replica distribution`, add replica size distribution
```
mysql> admin show replica distribution from tbl1 partition(tbl1);
+-----------+------------+-------------+----------+------------+-----------+-------------+
| BackendId | ReplicaNum | ReplicaSize | NumGraph | NumPercent | SizeGraph | SizePercent |
+-----------+------------+-------------+----------+------------+-----------+-------------+
| 10002 | 1 | 0 | > | 100.00% | | 100.00% |
+-----------+------------+-------------+----------+------------+-----------+-------------+
```
