StarRocks/starrocks 3.5.9 on GitHub

Added transaction latency metrics to FE for observing timing across transaction stages. #64948
Supports overwriting S3 unpartitioned Hive tables to simplify full-table rewrites in data lake scenarios. #65340
Introduced CacheOptions to provide finer-grained control over tablet metadata caching. #65222
Supports sample statistics collection for INSERT OVERWRITE to ensure statistics stay consistent with the latest data. #65363
Optimized the statistics collection strategy after INSERT OVERWRITE to avoid missing or incorrect statistics due to asynchronous tablet reports. #65327
Introduced a retention period for partitions dropped or replaced by INSERT OVERWRITE or materialized view refresh operations, keeping them in the recycle bin for a while to improve recoverability. #64779

The following issues have been fixed:

Lock contention and concurrency issues related to LocalMetastore.truncateTable(). #65191
Lock contention and replica check performance issues related to TabletChecker. #65312
Incorrect error logging when changing user via HTTP SQL. #65371
Checksum failures caused by DelVec CRC32 upgrade compatibility issues. #65442
Tablet metadata load failures caused by RocksDB iteration timeout. #65146
When the internal flat_path string is empty because the JSON hyper extraction path is $ or all paths are skipped, calling substr will throw an exception and cause BE crash. #65260
The PREPARED flag in fragment execution is not correctly set. #65423
Inaccurate write and flush metrics caused by duplicated load profile counters. #65252
When multiple HTTP requests reuse the same TCP connection, if a non‑ExecuteSQL request arrives after an ExecuteSQL request, the HttpConnectContext cannot be unregistered at channel close, causing HTTP context leaks. #65203
MySQL 8.0 schema introspection errors (Fixed by adding session variables default_authentication_plugin and authentication_policy). #65330
SHOW ANALYZE STATUS errors caused by unnecessary statistics collection for temporary partitions created after partition overwrite operations. #65298
Global Runtime Filter race in the Event Scheduler. #65200
Data Cache is aggressively disabled because the minimum Data Cache disk size constraint is too large. #64909
An aarch64 build issue related to the gold linker automatic fallback. #65156