Add conf enable_query_memroy_overcommit
If true, when the process does not exceed the soft mem limit, the query memory will not be limited; when the process memory exceeds the soft mem limit, the query with the largest ratio between the currently used memory and the exec_mem_limit will be canceled.
If false, cancel query when the memory used exceeds exec_mem_limit, same as before.
Current refresh catalog/db operation always invalid all the related cache. In some cases, it is not necessary,
for example, create a new db in external data source. This pr is to support refresh without invalidate cache.
refresh catalog hive properties("invalid_cache" = "false");
refresh database hive.db1 properties("invalid_cache" = "false");
At present, there are multiple user interface to access hdfs and s3.
Each interface has its own configuration and is different, which causes confusion for users.
Create resource already supports remote storage resources and resource permission management,
but only `spark`/`odbc_catalog` are in use.
Cloud storage resources need to be created and managed uniformly through create resource.
This PR contains the following changes:
1. Add `s3`, `hdfs` and `hms` resource, and each resource contains it's own configuration items, and delete configuration items scattered in other classes.
2. Use `resource` to create `storage` tools, and use `storage` tools to access the remote file system.
* [fix](schemachange) fix the schema change that causes the be core dump.
Forbid schema change to add or modify the key column of the agg model as double or float.
1.add a vertical compaction segment file size config, make it more
flexible to set segment file size
2.add a config to close skip tablet compaction. If current skip logic
has some bug so we can still use old logic
3.delete some useless log
When the system MemAvailable is less than the warning water mark, or the memory used by the BE process exceeds the mem soft limit, run minor gc and try to release cache.
When the MemAvailable of the system is less than the low water mark, or the memory used by the BE process exceeds the mem limit, run fucc gc, try to release the cache, and start canceling from the query with the largest memory usage until the memory of mem_limit * 20% is released.
