uniffle

[#2739] feat(server): Trigger flush when there are too many blocks in shuffle buffer (#2744)

fix(spark): potential hang with skipped segments on overlapping decompression (#2745)

[#2740] improvement(server) Just check block count while checking commit result (#2742)

[#2738] feat(server): add metrics to track shuffle data block count and avg block size (#2741)

[#2601][FOLLOWUP] fix(spark): Release segmentPermits before buffer getting to avoid deadlock in decompression worker (#2737)