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Add web version of the TUI app

Status: Open.

#1660 In apache/datafusion-ballista;

· martin-g opened on May 6, 2026

Should Ballista use sort-merge join rather than hash join by default?

enhancementNew feature or requestNew feature or request

Status: Open.

#1648 In apache/datafusion-ballista;

· andygrove opened on May 2, 2026

TPC-H Q2 parallelism bottleneck: hash partitioning on low-cardinality keys causes severe data skew

Status: Open.

#1643 In apache/datafusion-ballista;

· andygrove opened on May 1, 2026

[TUI] Render Executor's system & process metrics

Status: Open.

#1642 In apache/datafusion-ballista;

· martin-g opened on May 1, 2026

Update benchmark results in README

enhancementNew feature or requestNew feature or request

Status: Open.

#1630 In apache/datafusion-ballista;

· andygrove opened on Apr 30, 2026

feat: make it user configurable to display plans as tree renderer

enhancementNew feature or requestNew feature or request

good first issueGood for newcomersGood for newcomers

help wantedExtra attention is neededExtra attention is needed

Status: Open.

#1627 In apache/datafusion-ballista;

· milenkovicm opened on Apr 30, 2026

Small files problem.

Status: Open.

#1617 In apache/datafusion-ballista;

· xunxunmimi5577 opened on Apr 29, 2026

Add installation instructions to Python user guide

enhancementNew feature or requestNew feature or request

Status: Open.

#1609 In apache/datafusion-ballista;

· andygrove opened on Apr 28, 2026

Add IO_BLOCK_TRANSPORT support for sort-based shuffle

enhancementNew feature or requestNew feature or request

Status: Open.

#1606 In apache/datafusion-ballista;

· andygrove opened on Apr 28, 2026

Configuration guide should be generated from code

documentationImprovements or additions to documentationImprovements or additions to documentation

enhancementNew feature or requestNew feature or request

Status: Open.

#1599 In apache/datafusion-ballista;

· andygrove opened on Apr 27, 2026

Unable to use Ballista at scale (e.g. TPC-H @ 1TB)

bugSomething isn't workingSomething isn't working

Status: Open.

#1596 In apache/datafusion-ballista;

· andygrove opened on Apr 27, 2026

Executors try to connect with local scheduler instead of remote scheduler

bugSomething isn't workingSomething isn't working

documentationImprovements or additions to documentationImprovements or additions to documentation

user experience

Status: Open.

#1587 In apache/datafusion-ballista;

· andygrove opened on Apr 26, 2026