June 2026 monthly summary for apache/doris focusing on performance and reliability improvements in the query planning path. The major work this month was implementing a per-partition filtering improvement in distributionPrune within the Nereids-driven query planning flow, coupled with targeted documentation of the problem and its solution. This reduced unnecessary work during partitioned query planning and eliminated redundant lookups and memory copies when there are many partitions and globally pruned tablets.

In December 2025, delivered a reliability-focused bug fix for Doris Sink in the apache/seatunnel repo. Implemented a targeted fix to prevent exceptions when transactions are already committed or visible, addressing stability concerns in transaction-state handling for streaming/integration pipelines. The change was committed as c3b63c84d01a8eda4a75d26ab88da0a6d2bee397 in response to issue #10079 and validated via targeted checks before merge.