This is the last PR of proposal #4308
1. Add a new FE config `enable_http_server_v2` to enable new HTTP Server implementation. The default value is false.
2. Add a new FE config `http_api_extra_base_path` so that we can set base path for Frontend UI.
3. Refactor the new HTTP API response body. The return http status code is always 200, and using internal code in response body to indicate the certain error.
Support new synatx CREATE TABLE [IF NOT EXISTS] [db_name].table_name AS [db_name2].table_name2;
to create a new table from existed table with same table schema.
ISSUE: #4355
#4619
Add time_round functions that provides `time_floor` & `time_ceil` at each time unit.
Fix two related bugs.
- #4618
- Fix `struct TimeInterval` to use `int64_t` instead of `int32_t`, in case when the second diff overflow
If some partitions between `dynamic_partition.start` and `dynamic_partition.end` are lost
due to some unexpected circumstances when using dynamic partition.
the lost partitions between the current time and `dynamic_partition.end` will be recreated,
but the lost partitions between `dynamic_partition.start` and the current time will not be recreated.
1. Find the cache node by SQL Key, then find the corresponding partition data by Partition Key, and then decide whether to hit Cache by LastVersion and LastVersionTime
2. Refers to the classic cache algorithm LRU, which is the least recently used algorithm, using a three-layer data structure to achieve
3. The Cache elimination algorithm is implemented by ensuring the range of the partition as much as possible, to avoid the situation of partition discontinuity, which will reduce the hit rate of the Cache partition,
4. Use the two thresholds of maximum memory and elastic memory to control to avoid frequent elimination of data
* [SQL] Support where, limit, order clause in show resourcestmt.
Grammar
SHOW RESOURCES
[
WHERE
[NAME [ = "your_resource_name" | LIKE "name_matcher"]]
[RESOURCETYPE = ["SPARK"]]
]
[ORDER BY ...]
[LIMIT limit][OFFSET offset];
issue #4501
After 0.12 version, doris remove the format convert functiion which can convert from hdr_ format
to tabletmeta_ format when loading metas, the commit link: 3bca253
When we update doris version and there are old format meta in storage,
BE will not read the old format tablet. It can lead to data loss.
So we add meta format detection function to prevent data loss.
When there are old format meta in olap_meta, BE can find and print log or exit.
When Doris create a database, the database of data quota and replica quota is initialized by configuration(Config.default_db_data_quota_bytes and Config.default_db_replica_quota_bytes).
In other words, I convert FeConstants.default_db_data_quota_bytes to Config.default_db_data_quota_bytes
Config.default_db_data_quota_bytes can be change in configuration file.
Many tables are so large that need seperate partitions with "HOUR" time unit.
But now dynamic partition doesn't support "HOUR" time unit and it was marked as "TODO".
So I support the feature and it works.
we can create odbc_table use SQL like
```
CREATE EXTERNAL TABLE `baseall_oracle` (
`k1` decimal(9, 3) NOT NULL COMMENT "",
`k2` char(10) NOT NULL COMMENT "",
`k3` datetime NOT NULL COMMENT "",
`k5` varchar(20) NOT NULL COMMENT "",
`k6` double NOT NULL COMMENT ""
) ENGINE=ODBC
PROPERTIES (
"host" = "192.168.0.1",
"port" = "8086",
"user" = "happenlee",
"password" = "doris",
"database" = "doris",
"table" = "baseall",
"driver" = "Oracle 19 ODBC driver",
"type" = "oracle"
);
```
Now we only support Oracle and MySQL Database and this feature default turned off by conf enable_odbc_table.
Main CL:
1. Copy the code from BE to implement the `str_to_date()` function in FE.
2. `str_to_date("2020-08-08", "%Y-%m-%d %H:%i:%s")` will return `2020-08-08 00:00:00` instead of `2020-08-08`.
