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Revisit ExternalSorter sort strategy and sort_in_place_threshold_bytes

Status: Open.

#21543 In apache/datafusion;

· mbutrovich opened on Apr 10, 2026

Generalize StringViewArrayBuilder / StringArrayBuilder, use more broadly

enhancementNew feature or requestNew feature or request

Status: Open.

Feature

#21539 In apache/datafusion;

· neilconway opened on Apr 10, 2026

Optimize NULL handling in StringViewArrayBuilder

enhancementNew feature or requestNew feature or request

Status: Open.

Feature

#21537 In apache/datafusion;

· neilconway opened on Apr 10, 2026

Add vector distance, array math, and array aggregate functions

Status: Open.

#21536 In apache/datafusion;

· crm26 opened on Apr 10, 2026

Incorrect approx_percentile / approx_median results for small datasets due to unnecessary t-digest interpolation

bugSomething isn't workingSomething isn't working

Status: Open.

Bug

#21528 In apache/datafusion;

· aryan-212 opened on Apr 10, 2026

filter not pushdown through sort in FilterPushdown

bugSomething isn't workingSomething isn't working

Status: Open.

Bug

#21526 In apache/datafusion;

· haohuaijin opened on Apr 10, 2026

bug: datafusion-spark string literals don't interpret escape sequences like Spark

spark

Status: Open.

#21516 In apache/datafusion;

· andygrove opened on Apr 9, 2026

bug: datafusion-spark format_string %t timestamp specifiers do not match Spark behavior

spark

Status: Open.

#21515 In apache/datafusion;

· andygrove opened on Apr 9, 2026

bug: datafusion-spark mod/pmod returns NaN instead of NULL for float division by zero

spark

Status: Open.

#21514 In apache/datafusion;

· andygrove opened on Apr 9, 2026

bug: datafusion-spark array_repeat incorrectly returns NULL when element is NULL

spark

Status: Open.

#21512 In apache/datafusion;

· andygrove opened on Apr 9, 2026

bug: datafusion-spark substring returns wrong result for large negative start positions

spark

Status: Open.

#21510 In apache/datafusion;

· andygrove opened on Apr 9, 2026

Incorrect query results for GROUP BY with UNIQUE constraint

bugSomething isn't workingSomething isn't working

Status: Open.

Bug

#21507 In apache/datafusion;

· neilconway opened on Apr 9, 2026