* (feature)(cloud) Use dynamic allocator instead of static buffer pool for better elasticity. (#28983)
* [fix](outfile) Fix unable to export empty data (#30703)
Issue Number: close#30600
Fix unable to export empty data to hdfs / S3, this behavior is inconsistent with version 1.2.7,
version 1.2.7 can export empty data to hdfs/ S3, and there will be exported files on S3/HDFS.
* [fix](file-writer) avoid empty file for segment writer (#31169)
---------
Co-authored-by: AlexYue <yj976240184@gmail.com>
Co-authored-by: zxealous <zhouchangyue@baidu.com>
This PR makes the following changes to the connection pool of JDBC Catalog
1. Set the maximum connection survival time, the default is 30 minutes
- Moreover, one-half of the maximum survival time is the recyclable time,
- One-tenth is the check interval for recycling connections
2. Keepalive only takes effect on the connection pool on BE, and will be activated based on one-fifth of the maximum survival time.
3. The maximum number of existing connections is changed from 100 to 10
4. Add the connection cache recycling thread on BE, and add a parameter to control the recycling time, the default is 28800 (8 hours)
5. Add CatalogID to the key of the connection pool cache to achieve better isolation, requires refresh catalog to take effect
6. Upgrade druid connection pool to version 1.2.20
7. Added JdbcResource's setting of default parameters when upgrading the FE version to avoid errors due to unset parameters.
* [improvement](create tablet) backend create tablet round robin among … (#29818)
* [improvement](create tablet) be choose disk tolerate with little skew (#30354)
---------
Co-authored-by: yujun <yu.jun.reach@gmail.com>
1. we need remove BE kinit, and use jni login with keytab, because kinit cannot renew TGT for doris in many complex cases.
> This pull requet will support new instance from keytab: https://github.com/apache/doris-thirdparty/pull/173, so now we won't need kinit cmd, just login with keytab and principal
2. add `kerberos_ccache_path` to set kerberos credentials cache path manually.
3. add `max_hdfs_file_handle_cache_time_ms` to set hdfs fs handle cache time.
After all LRU Cache inherits from LRUCachePolicy, this will allow prune stale entry, eviction when memory exceeds limit, and define common properties. LRUCache constructor change to private, only allow LRUCachePolicy to construct it.
Impl DummyLRUCache, when LRU Cache capacity is 0, will no longer be meaningless insert and evict.
Normally we write the separate index files to disk before we merge the index files into an idx compound file.
In high-frequency load scenarios, disk IO can become a bottleneck.
In order to reduce the pressure on the disk, we write the standalone index file to the RAM directory for the first time, and then write it to the disk when merging it into a composite file.
Add config `index_inverted_index_by_ram_dir_enable`, default is `false`.
We change memtable size from 200MB to 100MB to achieve smoother flush
performance. We change loadStreamPerNode from 20 to 60 to avoid stream
rpc to be the bottleneck when enable memtable_on_sink_node. We change
default s3&broker load parallelsim to make the most of CPUs on moderm
multi-core systems.
Signed-off-by: freemandealer <freeman.zhang1992@gmail.com>
1. Remove `doris_max_remote_scanner_thread_pool_thread_num`, use `doris_scanner_thread_pool_thread_num` only.
2. Set the default value `doris_scanner_thread_pool_thread_num` as `std::max(48, CpuInfo::num_cores() * 4)`
