fix(cluster): close exchange buffer on send error (#19857)

* fix(cluster): close exchange buffer on send error

* fix(query): address exchange close clippy issues

* fix: special handle local channel

---------

Co-authored-by: Winter Zhang <[email protected]>

feat(query): add is_role_in_session funciton (#19867)

feat(storage): use from_slice instead of from_reader for NDJSON parsi…

…ng (#19843)

perf(storage): use from_slice instead of from_reader for NDJSON parsing

Replace serde_json::from_reader with serde_json::from_slice in the NDJSON
row decoder. from_reader wraps the byte slice in an IoRead adapter that
reads byte-by-byte, disabling serde_json's internal SIMD-friendly slice
fast path.

Benchmark (20k rows, ~890 MiB real OTEL trace NDJSON, avg ~45KB/row):
- from_reader: 1.947s (457 MiB/s)
- from_slice:  0.768s (1160 MiB/s)  -- 2.54x faster

No behavior change: the input is already a &[u8] slice.

fix(query): drop window aggregate state before reset (#19841)

fix(storage): balance distributed recluster task generation (#19840)

* fix(storage): balance distributed recluster task generation

* fix test

* fix test

* fix test

* fix

* fix

fix(query): Fix window aggregate function result materialization (#19823

)

* fix(query): Fix window aggregate function result materialization

* fix

rfc: Conversion safety helper for optimizer reasoning (#19828)

docs: add conversion safety helper RFC

feat(fuse): support per-column STATS_TRUNCATE_LEN for string statisti…

…cs (#19815)

* feat(fuse): support per-column STATS_TRUNCATE_LEN for string statistics

Add STATS_TRUNCATE_LEN column option to CREATE TABLE DDL, allowing
users to specify a custom string truncation length (1-4096) for
column-level min/max statistics instead of the default 16 bytes.

Changes:
- Add STATS_TRUNCATE_LEN keyword to parser and column definition AST
- Store field_stats_truncate_len in TableMeta (proto field 39)
- Plumb truncate length through WriteSettings, BlockBuilder, and
  ColumnStatisticsState to gen_columns_statistics
- Add trim_string_min/max_with_len helpers for custom-length trimming
- Show STATS_TRUNCATE_LEN in SHOW CREATE TABLE output
- Add proto-conv v175 test and sqllogictest coverage

* z

* z

* z

* z

refactor(spill): extract MemoryPool from SpillsBufferPool and make po…

…ol size per-session configurable (#19805)

* refactor(spill): extract MemoryPool from SpillsBufferPool and make pool size per-session configurable

- Extract MemoryPool struct from SpillsBufferPool with chunk-based allocation and blocking wait
- Add session-level setting 'spill_writer_memory_pool_size_mb' (default 20MB) to control per-writer pool size
- Remove global 'buffer_pool_memory' from SpillConfig, making memory management more flexible
- MemoryPool uses lazy allocation up to max_chunks, then blocks waiting for buffer release

* z

* z

refactor(spill): extract MemoryPool from SpillsBufferPool and make po…

…ol size per-session configurable (#19805)

* refactor(spill): extract MemoryPool from SpillsBufferPool and make pool size per-session configurable

- Extract MemoryPool struct from SpillsBufferPool with chunk-based allocation and blocking wait
- Add session-level setting 'spill_writer_memory_pool_size_mb' (default 20MB) to control per-writer pool size
- Remove global 'buffer_pool_memory' from SpillConfig, making memory management more flexible
- MemoryPool uses lazy allocation up to max_chunks, then blocks waiting for buffer release

* z

* z