yiguolei opened a new issue, #68889:
URL: https://github.com/apache/doris/issues/68889

   # Apache Doris 4.1.5 Release Notes Draft
   
   These notes cover user-visible changes from Apache Doris `4.1.4` to 
`4.1.5-rc01`. Version 4.1.5 expands Lance query, search, and version access 
capabilities; adds a Paimon Rust reader, Hive static partition overwrite, and 
compute group binding for background jobs; and fixes issues in query 
correctness, lakehouse reads, ingestion, and storage and compute separation.
   
   > This draft is based on `4.1.5-rc01` and must be reconciled with the final 
release tag before publication. The comparison baseline is `4.1.4`, so some 
fixes overlap with the `4.1.4.1` hotfix release.
   
   ## New Features
   
   ### Lakehouse
   
   - Support static partition overwrite for Hive tables. 
([#68181](https://github.com/apache/doris/pull/68181))
   
   ### AI and Search
   
   - Support `ik_smart` and `ik_max_word` tokenizers in custom inverted-index 
analyzers. ([#68550](https://github.com/apache/doris/pull/68550))
   - Add a `norms` index property and a BE configuration for skipping norms on 
VARIANT paths. ([#68140](https://github.com/apache/doris/pull/68140))
   - Support dedicated embedding properties in AI RESOURCE. 
([#68384](https://github.com/apache/doris/pull/68384))
   
   ### Cloud and Job Management
   
   - Allow Routine Load jobs and asynchronous materialized views to bind 
explicitly to a compute group through the `compute_group` property. 
([#67010](https://github.com/apache/doris/pull/67010))
   - Add dry-run mode for FE-to-MetaService and BE-to-MetaService RPC rate 
limiting. ([#67421](https://github.com/apache/doris/pull/67421), 
[#67240](https://github.com/apache/doris/pull/67240))
   
   ## Improvements
   
   ### Lakehouse and Cloud
   
   - Batch Hive Metastore partition access to reduce metadata requests. 
([#68197](https://github.com/apache/doris/pull/68197))
   - Support lazy HDFS file opening for Iceberg and propagate delete-file 
sizes. ([#67842](https://github.com/apache/doris/pull/67842))
   - Reduce object allocations and reuse boxed IDs in cloud tablet indexes; 
release scheduling indexes after balancing. 
([#67278](https://github.com/apache/doris/pull/67278), 
[#67248](https://github.com/apache/doris/pull/67248), 
[#67290](https://github.com/apache/doris/pull/67290))
   - Optimize deletion of delete bitmap keys during rowset recycling. 
([#67854](https://github.com/apache/doris/pull/67854), 
[#67936](https://github.com/apache/doris/pull/67936))
   - Register the watershed transaction ID only once when a BE enters the 
decommissioning state. ([#67632](https://github.com/apache/doris/pull/67632))
   
   ### Ingestion and Storage
   
   - Improve write performance through better backpressure control. 
([#67728](https://github.com/apache/doris/pull/67728))
   - Skip redundant `createLocation` operations in the Group Commit Stream Load 
sink. ([#63685](https://github.com/apache/doris/pull/63685))
   - Adjust CDC request timeout and snapshot split batch defaults. 
([#67684](https://github.com/apache/doris/pull/67684))
   - Avoid copying segment key bounds during primary-key lookups and release 
unused storage-path memory earlier. 
([#67698](https://github.com/apache/doris/pull/67698), 
[#67956](https://github.com/apache/doris/pull/67956))
   
   ### Query and Execution
   
   - Optimize the join orientation for `MERGE INTO` by placing the target table 
on the probe side. ([#67279](https://github.com/apache/doris/pull/67279))
   - Improve mark-join slot inference to eliminate redundant mark joins. 
([#67280](https://github.com/apache/doris/pull/67280))
   - Add a dictionary fast path for day and week arithmetic. 
([#67233](https://github.com/apache/doris/pull/67233))
   - Optimize `pow` for squares while preserving exact integer results. 
([#68443](https://github.com/apache/doris/pull/68443))
   - Avoid redundant partition version requests during SQL cache validation. 
([#67415](https://github.com/apache/doris/pull/67415))
   - Support row-ID fetch in FileScannerV2. 
([#67922](https://github.com/apache/doris/pull/67922))
   
   ### Operations and Diagnostics
   
   - Include usernames in HTTP request logs for auditing. 
([#67319](https://github.com/apache/doris/pull/67319))
   - Improve audit logs for S3 streaming insert jobs. 
([#67756](https://github.com/apache/doris/pull/67756))
   - Reduce duplicate query cancellation logs and avoid per-file-descriptor 
`stat` calls when collecting process file descriptor counts. 
([#67548](https://github.com/apache/doris/pull/67548), 
[#68046](https://github.com/apache/doris/pull/68046))
   
   ## Bug Fixes
   
   ### Query Optimization and Correctness
   
   - Fix join amplification caused by WinMagic subquery rewrites. 
([#67288](https://github.com/apache/doris/pull/67288))
   - Retain sliding-window rows until they can be safely evicted and respect 
window frames when simplifying window functions. 
([#67329](https://github.com/apache/doris/pull/67329), 
[#67743](https://github.com/apache/doris/pull/67743))
   - Preserve nullability in DISTINCT window rewrites and cast comparisons, and 
preserve session guards during common expression extraction. 
([#67721](https://github.com/apache/doris/pull/67721), 
[#67843](https://github.com/apache/doris/pull/67843), 
[#67863](https://github.com/apache/doris/pull/67863))
   - Preserve weighted averages when eliminating GROUP BY and correct 
participation checks in aggregate inference. 
([#67832](https://github.com/apache/doris/pull/67832), 
[#68175](https://github.com/apache/doris/pull/68175))
   - Normalize projected COUNT slots before NULL-safety checks. 
([#68068](https://github.com/apache/doris/pull/68068))
   - Prevent runtime filters from being pushed below Repeat when the target 
slot is absent from any grouping set. 
([#67992](https://github.com/apache/doris/pull/67992))
   - Reject storage-level `MIN` and `MAX` pushdown through unsafe casts. 
([#67980](https://github.com/apache/doris/pull/67980))
   - Fix partial TopN pushdown through joins, preserve required slots during 
TopN lazy materialization, and disable TopN lazy materialization for tables 
without light schema change. 
([#68235](https://github.com/apache/doris/pull/68235), 
[#68072](https://github.com/apache/doris/pull/68072), 
[#67928](https://github.com/apache/doris/pull/67928))
   - Preserve UNION constant rows across rewrites and retain Generate child 
outputs required by subqueries. 
([#68172](https://github.com/apache/doris/pull/68172), 
[#68173](https://github.com/apache/doris/pull/68173))
   - Resolve correlated qualified columns before dereference expressions. 
([#68062](https://github.com/apache/doris/pull/68062))
   - Hide internal HAVING helper columns from query output. 
([#68075](https://github.com/apache/doris/pull/68075))
   - Preserve duplicate output column positions in table-valued functions. 
([#67829](https://github.com/apache/doris/pull/67829))
   - Align constant folding and interval folding with BE execution. 
([#68071](https://github.com/apache/doris/pull/68071), 
[#68174](https://github.com/apache/doris/pull/68174))
   - Track user variables in the SQL cache and apply `sql_select_limit` to 
materialized CTE results. 
([#68069](https://github.com/apache/doris/pull/68069), 
[#68077](https://github.com/apache/doris/pull/68077))
   - Propagate constants out of one-row relations to enable partition pruning. 
([#67400](https://github.com/apache/doris/pull/67400))
   - Improve error messages for unsupported subqueries. 
([#67693](https://github.com/apache/doris/pull/67693))
   
   ### Functions and Data Types
   
   - Fix execution of `topn_array` and `topn_weighted` on BOOLEAN inputs while 
preserving BOOLEAN array result types. 
([#68409](https://github.com/apache/doris/pull/68409))
   - Fix candidate loss in `topn`, `topn_array`, and `topn_weighted` when 
`space_expand_rate` is zero. Non-positive values now allow unlimited 
intermediate candidate retention; `top_num` still limits the final result. 
([#68545](https://github.com/apache/doris/pull/68545))
   - Return NULL from `TRY_CAST` on arithmetic overflow. 
([#67985](https://github.com/apache/doris/pull/67985))
   - Fix overflow, batch integer output, and NULL-argument row handling in 
`array_range`. ([#67689](https://github.com/apache/doris/pull/67689), 
[#68644](https://github.com/apache/doris/pull/68644))
   - Fix nested `array_map` lambda captures, appending to constant NULL arrays, 
and array functions operating on outer-NULL containers with hidden nested data. 
([#68471](https://github.com/apache/doris/pull/68471), 
[#68442](https://github.com/apache/doris/pull/68442), 
[#68696](https://github.com/apache/doris/pull/68696))
   - Preserve the leading NULLs of each row in `array_cum_sum`. 
([#68605](https://github.com/apache/doris/pull/68605))
   - Fix Decimal rounding with zero decimal places and rounding overflow at 
scale boundaries. ([#68412](https://github.com/apache/doris/pull/68412), 
[#68415](https://github.com/apache/doris/pull/68415))
   - Fix `LIKE` matches with extra trailing characters and avoid using NGram 
Bloom Filter indexes when patterns may contain escapes. 
([#68159](https://github.com/apache/doris/pull/68159), 
[#68319](https://github.com/apache/doris/pull/68319))
   - Fix empty constant regular expression patterns, UTF-8 splitting with an 
empty regular expression, and extended regular expression fallback for 
non-constant patterns. ([#68179](https://github.com/apache/doris/pull/68179), 
[#68417](https://github.com/apache/doris/pull/68417), 
[#68591](https://github.com/apache/doris/pull/68591))
   - Fix argument-count validation for `json_set`, `json_insert`, and 
`json_replace`, and fix constant nullable JSON path evaluation. 
([#67914](https://github.com/apache/doris/pull/67914), 
[#68525](https://github.com/apache/doris/pull/68525))
   - Prevent JSON text from being truncated at `U+0000` inside a string and 
preserve NUL bytes in count-by-enum keys. 
([#68735](https://github.com/apache/doris/pull/68735), 
[#68419](https://github.com/apache/doris/pull/68419))
   - Preserve NULL propagation in date floor functions and account for 
microseconds in week floor and ceil operations. 
([#68423](https://github.com/apache/doris/pull/68423), 
[#68416](https://github.com/apache/doris/pull/68416))
   - Fix range checks for oversized Unix timestamps and correct the aliases of 
`next_day` and `previous_day`. 
([#68364](https://github.com/apache/doris/pull/68364), 
[#68542](https://github.com/apache/doris/pull/68542))
   - Fix odd-byte IPv6 truncation and zero-address IPv4 CIDR handling. 
([#68414](https://github.com/apache/doris/pull/68414), 
[#68420](https://github.com/apache/doris/pull/68420))
   - Fix NULL handling in `parse_data_size` and `MAKE_SET`. 
([#68413](https://github.com/apache/doris/pull/68413), 
[#68411](https://github.com/apache/doris/pull/68411))
   - Fix BIGINT overflow during base conversion in `conv`. 
([#68424](https://github.com/apache/doris/pull/68424))
   - Preserve all samples when merging percentile states, align NULL ordering 
in complex aggregates, and restore BOOLEAN support in `linear_histogram`. 
([#68475](https://github.com/apache/doris/pull/68475), 
[#68422](https://github.com/apache/doris/pull/68422), 
[#68676](https://github.com/apache/doris/pull/68676))
   - Fix crashes when reading zero-length serialized BITMAP, HLL, or 
QuantileState cells. ([#68497](https://github.com/apache/doris/pull/68497))
   
   ### Lakehouse Reads and External Metadata
   
   - Fix historical Iceberg scans after schema evolution, V2 reads across 
nested schema evolution, and schema binding for historical scans. 
([#67479](https://github.com/apache/doris/pull/67479), 
[#67690](https://github.com/apache/doris/pull/67690), 
[#68568](https://github.com/apache/doris/pull/68568))
   - Support fractional timestamps correctly in Iceberg time travel. 
([#67704](https://github.com/apache/doris/pull/67704))
   - Fix planning failures for Iceberg VARIANT subpaths and preserve 
nullability in schema metadata. 
([#68121](https://github.com/apache/doris/pull/68121), 
[#67856](https://github.com/apache/doris/pull/67856))
   - Report errors for missing Iceberg snapshot files and invalid name mappings 
instead of returning incorrect data. 
([#68143](https://github.com/apache/doris/pull/68143), 
[#68003](https://github.com/apache/doris/pull/68003))
   - Fix equality-delete key matching after schema type promotion and preserve 
file partition specifications when tables evolve to an unpartitioned layout. 
([#68383](https://github.com/apache/doris/pull/68383), 
[#68481](https://github.com/apache/doris/pull/68481))
   - Run Iceberg execute actions in the corresponding catalog authentication 
context. ([#67695](https://github.com/apache/doris/pull/67695))
   - Preserve Paimon CAST predicate semantics, estimate row counts from 
snapshot metadata, and invalidate the SDK cache on metadata refresh. 
([#67933](https://github.com/apache/doris/pull/67933), 
[#68155](https://github.com/apache/doris/pull/68155), 
[#68238](https://github.com/apache/doris/pull/68238))
   - Scope Hive file cache entries by table and fix name and row-count cache 
invalidation after external metadata changes. 
([#68575](https://github.com/apache/doris/pull/68575), 
[#67417](https://github.com/apache/doris/pull/67417), 
[#68196](https://github.com/apache/doris/pull/68196))
   - Release Iceberg FileIO and Hudi fsView resources on cache eviction. 
([#66913](https://github.com/apache/doris/pull/66913))
   - Align Parquet and ORC timestamp semantics and fix external binary and 
timestamp mappings and binary value ownership. 
([#68441](https://github.com/apache/doris/pull/68441), 
[#68532](https://github.com/apache/doris/pull/68532), 
[#68297](https://github.com/apache/doris/pull/68297))
   - Preserve safe predicate ordering for Parquet VARIANT metadata pruning and 
enforce a Parquet metadata size limit. 
([#68144](https://github.com/apache/doris/pull/68144), 
[#68047](https://github.com/apache/doris/pull/68047))
   - Fix lost and duplicate rows when splitting CSV and JSON files using 
multi-character line delimiters. 
([#68600](https://github.com/apache/doris/pull/68600))
   - Clamp HTTP range reads to the file size and keep S3 response streams 
usable when an error body exceeds the read buffer. 
([#67683](https://github.com/apache/doris/pull/67683), 
[#68544](https://github.com/apache/doris/pull/68544))
   - Fix BE access to AWS in EKS Pod Identity environments. 
([#67555](https://github.com/apache/doris/pull/67555))
   - Select Lance vector indexes compatible with the requested distance metric 
and fix Lance JNI compatibility with glibc 2.17. 
([#67553](https://github.com/apache/doris/pull/67553), 
[#67862](https://github.com/apache/doris/pull/67862))
   
   ### Arrow Flight SQL and Client Protocols
   
   - Prevent Arrow Flight connections from using the point-query short-circuit 
path or replaying MySQL SQL cache results. 
([#67557](https://github.com/apache/doris/pull/67557), 
[#67556](https://github.com/apache/doris/pull/67556))
   - Release Flight coordinators promptly after query completion and cancel 
queries when result streams close early. 
([#67558](https://github.com/apache/doris/pull/67558), 
[#68630](https://github.com/apache/doris/pull/68630))
   - Deduplicate parallel result endpoints by backend. 
([#68642](https://github.com/apache/doris/pull/68642))
   - Validate Arrow result arrays before publishing batches and reject 
out-of-range timestamps. ([#68596](https://github.com/apache/doris/pull/68596), 
[#68604](https://github.com/apache/doris/pull/68604))
   - Fix year-zero DATE conversion, preserve nested logical type metadata, and 
return analyzed query schemas and table type metadata. 
([#68649](https://github.com/apache/doris/pull/68649), 
[#68614](https://github.com/apache/doris/pull/68614), 
[#68631](https://github.com/apache/doris/pull/68631))
   - Fix MySQL Connector/J cursor fetches hanging on empty results. 
([#68064](https://github.com/apache/doris/pull/68064))
   
   ### Ingestion and Job Lifecycle
   
   - Handle incomplete WAL records during replay and stop rejecting WAL data 
containing VARIANT columns as an unsupported file format. 
([#67420](https://github.com/apache/doris/pull/67420), 
[#68242](https://github.com/apache/doris/pull/68242))
   - Fix Group Commit routing for virtual compute groups. 
([#67590](https://github.com/apache/doris/pull/67590))
   - Return transactional INSERT execution errors to clients. 
([#67925](https://github.com/apache/doris/pull/67925))
   - Fix strict-load crashes when direct slot mappings are absent. 
([#67953](https://github.com/apache/doris/pull/67953))
   - Use the streaming job creator's identity for CDC operations. 
([#67937](https://github.com/apache/doris/pull/67937))
   - Preserve active export jobs and label mappings during history cleanup. 
([#67833](https://github.com/apache/doris/pull/67833))
   - Fix `SET_VAR` settings leaking into subsequent statements after INSERT 
audit logging. ([#68108](https://github.com/apache/doris/pull/68108))
   
   ### Materialized Views and Metadata
   
   - Prevent snapshot reads from using current materialized views. 
([#67729](https://github.com/apache/doris/pull/67729))
   - Fix compensation for invalid partition buckets in partitioned rollup 
rewrites. ([#68067](https://github.com/apache/doris/pull/68067))
   - Avoid unnecessary full refreshes of asynchronous materialized views when a 
base table adds a partition without an existing snapshot. 
([#68249](https://github.com/apache/doris/pull/68249))
   - Preserve the original statement in asynchronous materialized view refresh 
tasks. ([#68272](https://github.com/apache/doris/pull/68272))
   - Restore rollup display state after metadata reload and keep rollup jobs 
waiting when aborting a conflicting transaction fails. 
([#67596](https://github.com/apache/doris/pull/67596), 
[#68055](https://github.com/apache/doris/pull/68055))
   - Skip dangling views when querying `information_schema.view_dependency` and 
fix quoting of view column names and comments in exported DDL. 
([#67377](https://github.com/apache/doris/pull/67377), 
[#67398](https://github.com/apache/doris/pull/67398), 
[#68076](https://github.com/apache/doris/pull/68076))
   - Treat invalid column statistics as UNKNOWN instead of failing the entire 
ANALYZE job, and fix null-pointer errors when querying a missing ANALYZE job 
ID. ([#68061](https://github.com/apache/doris/pull/68061), 
[#68493](https://github.com/apache/doris/pull/68493))
   - Commit FE type state only after the transition completes. 
([#68325](https://github.com/apache/doris/pull/68325))
   
   ### Storage and Compaction
   
   - Treat unparseable or reversed zone map bounds as invalid, preserve every 
byte of STRING and VARCHAR bounds, and fix NaN handling for legacy FLOAT and 
DOUBLE zone maps. ([#67528](https://github.com/apache/doris/pull/67528), 
[#67550](https://github.com/apache/doris/pull/67550), 
[#67998](https://github.com/apache/doris/pull/67998), 
[#68102](https://github.com/apache/doris/pull/68102))
   - Fix cumulative point advancement during parallel cumulative compaction and 
correct compaction thread accounting. 
([#67425](https://github.com/apache/doris/pull/67425), 
[#67662](https://github.com/apache/doris/pull/67662))
   - Keep the latest 10 versions unmerged during schema change and release 
exhausted segment contexts promptly during vertical compaction. 
([#67589](https://github.com/apache/doris/pull/67589), 
[#67599](https://github.com/apache/doris/pull/67599))
   - Classify cumulative compaction tasks by row count, avoid repeatedly 
compacting large rowsets, and include empty rowsets in approximate compaction 
scores. ([#66938](https://github.com/apache/doris/pull/66938), 
[#65601](https://github.com/apache/doris/pull/65601), 
[#66656](https://github.com/apache/doris/pull/66656))
   - Persist empty inverted-index files and stop writing orphan index files. 
([#68082](https://github.com/apache/doris/pull/68082))
   - Preserve VARIANT subpath order and prevent integer `element_at` indexes 
from being interpreted as subcolumn paths. 
([#68284](https://github.com/apache/doris/pull/68284), 
[#68041](https://github.com/apache/doris/pull/68041))
   - Do not cache failures to load segment row counts in BetaRowset, allowing 
subsequent retries. ([#68683](https://github.com/apache/doris/pull/68683))
   - Fix concurrent access to the rowset map in the backend tablets scanner. 
([#68316](https://github.com/apache/doris/pull/68316))
   
   ### File Cache and Cloud
   
   - Keep File Cache monitoring off the LRU recorder lock and count evicted 
bytes only for blocks that were actually downloaded. 
([#67495](https://github.com/apache/doris/pull/67495), 
[#68157](https://github.com/apache/doris/pull/68157))
   - Unify File Cache TTL deadlines, restore TTL block types when an expired 
TTL is extended, and set TTL on cloud schema change output. 
([#68313](https://github.com/apache/doris/pull/68313), 
[#68092](https://github.com/apache/doris/pull/68092), 
[#67686](https://github.com/apache/doris/pull/67686))
   - Preserve tablet IDs during synchronous File Cache writes. 
([#68347](https://github.com/apache/doris/pull/68347))
   - Trigger periodic cloud checkpoints through edit log rolls. 
([#67422](https://github.com/apache/doris/pull/67422))
   - Fix warm-up job scheduling starvation, release destinations on 
initialization failure, and restore destination locks after FE recovery. 
([#67643](https://github.com/apache/doris/pull/67643), 
[#68107](https://github.com/apache/doris/pull/68107), 
[#68105](https://github.com/apache/doris/pull/68105))
   - Avoid conflicts when recycling transactions with the same label and return 
the existing rowset for concurrent commits. 
([#67478](https://github.com/apache/doris/pull/67478), 
[#67660](https://github.com/apache/doris/pull/67660))
   - Exclude stale rowsets from temporary cloud schema change tablets and 
exclude covered rowsets from compaction minimum timestamps. 
([#67383](https://github.com/apache/doris/pull/67383), 
[#67751](https://github.com/apache/doris/pull/67751))
   - Refresh metadata for continuously ingested tablets and repair tablet 
indexes missing `db_id` during transaction commit. 
([#68044](https://github.com/apache/doris/pull/68044), 
[#68127](https://github.com/apache/doris/pull/68127))
   - Invalidate version caches on visible transaction commit retries. 
([#68650](https://github.com/apache/doris/pull/68650))
   - Respect recycle types when deleting partial-update rowsets and preserve 
clone source mappings for deleted instances. 
([#68665](https://github.com/apache/doris/pull/68665), 
[#68570](https://github.com/apache/doris/pull/68570))
   - Fix packed-slice location lifetimes, guard rowset statistics 
synchronization with task context, and decode transaction IDs safely through 
Versionstamp. ([#67973](https://github.com/apache/doris/pull/67973), 
[#67964](https://github.com/apache/doris/pull/67964), 
[#67954](https://github.com/apache/doris/pull/67954))
   - Correct the FDB size limit configuration for delete bitmap V2 and fix 
lookup of prepared transactions by coordinator. 
([#67938](https://github.com/apache/doris/pull/67938), 
[#68059](https://github.com/apache/doris/pull/68059))
   
   ### Authentication and Authorization
   
   - Unify `driver_url` validation across JDBC, Iceberg JDBC, and Paimon JDBC 
catalogs, including ALTER CATALOG operations. 
([#68164](https://github.com/apache/doris/pull/68164))
   - Mask sensitive configuration values in `SHOW FRONTEND CONFIG`. 
([#67920](https://github.com/apache/doris/pull/67920))
   - Apply consistent checks to HTTP Basic and cookie requests on `/rest/v1`. 
([#68635](https://github.com/apache/doris/pull/68635))
   - Treat only `root@'%'` as the root identity in `SET PASSWORD` and `ALTER 
USER`. ([#68634](https://github.com/apache/doris/pull/68634))
   - Check the grantor's column privileges in GRANT and REVOKE, and reject 
privilege object names with more than three parts. 
([#68629](https://github.com/apache/doris/pull/68629), 
[#68682](https://github.com/apache/doris/pull/68682))
   - Restrict AI resource creation by user identity and modifications to AI 
resources created by root. 
([#68265](https://github.com/apache/doris/pull/68265), 
[#67782](https://github.com/apache/doris/pull/67782))
   
   ### Stability and Platform Compatibility
   
   - Allocate a fresh StatementContext for each prepared-statement execution to 
prevent unbounded FE memory growth in long-lived prepared statements. 
([#67926](https://github.com/apache/doris/pull/67926))
   - Fix ReadListener leaks when workers reject tasks and prevent concurrent 
historical profile loaders. 
([#67990](https://github.com/apache/doris/pull/67990), 
[#67069](https://github.com/apache/doris/pull/67069))
   - Fix runtime filter RPC callback reuse and memory release, and resolve an 
AutoReleaseClosure data race. 
([#67912](https://github.com/apache/doris/pull/67912), 
[#67340](https://github.com/apache/doris/pull/67340))
   - Fix bvar sampling access to freed thread-local objects, timer callback 
destruction races, and races between adaptive flush callbacks and thread-pool 
teardown. ([#68045](https://github.com/apache/doris/pull/68045), 
[#68523](https://github.com/apache/doris/pull/68523), 
[#68326](https://github.com/apache/doris/pull/68326))
   - Initialize the bthread context key before first use and avoid repeated 
peer connection failures. 
([#67722](https://github.com/apache/doris/pull/67722), 
[#67647](https://github.com/apache/doris/pull/67647))
   - Prevent BE crashes on malformed AI adapter responses and correctly extract 
final text from Responses API output. 
([#68333](https://github.com/apache/doris/pull/68333), 
[#67795](https://github.com/apache/doris/pull/67795))
   - Fix double-free errors during PHDR unwinding under ASAN and `getentropy` 
crashes on glibc 2.17 under ASAN. 
([#68229](https://github.com/apache/doris/pull/68229), 
[#67849](https://github.com/apache/doris/pull/67849))
   - Upgrade libunwind to 1.8.3 to fix aarch64 BE startup crashes on Linux 
systems with 64 KiB memory pages. 
([#68339](https://github.com/apache/doris/pull/68339))
   - Fix dyld cache crashes with large BE binaries on macOS and stop background 
workers before exiting on startup failure. 
([#68218](https://github.com/apache/doris/pull/68218), 
[#68653](https://github.com/apache/doris/pull/68653))
   - Update dependencies including Thrift, AWS SDK, Nimbus, and gRPC, and 
remove unused LZ4 dependencies. 
([#67356](https://github.com/apache/doris/pull/67356), 
[#67554](https://github.com/apache/doris/pull/67554), 
[#67847](https://github.com/apache/doris/pull/67847), 
[#68060](https://github.com/apache/doris/pull/68060), 
[#67148](https://github.com/apache/doris/pull/67148), 
[#68557](https://github.com/apache/doris/pull/68557))
   


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