Issues

• isthmus: a BindableTableScan's pushed-down filters are dropped, so the converted read returns every row

  substrait-io/substrait-java#1399 · Filter by author nielspardon opened on Oct 9, 2026

• isthmus: binding targets are keyed by RelNode identity, so a reused scan instance gets a duplicate rel_anchor

  substrait-io/substrait-java#1398 · Filter by author nielspardon opened on Oct 9, 2026

• isthmus: RexFieldAccess over a ROW, CAST or CASE expression is rejected instead of converting to a struct field reference

  substrait-io/substrait-java#1397 · Filter by author nielspardon opened on Oct 9, 2026

• Util.memoize can return null under concurrent access

  substrait-io/substrait-java#1389 · Filter by author notfilippo opened on Oct 8, 2026

• spark: a path-based Delta read is exported as plain Parquet, so deleted rows reappear and column-mapped columns read as null

  substrait-io/substrait-java#1388 · Filter by author nielspardon opened on Oct 7, 2026

• isthmus: map subscripts fail unless the map key type is unbounded VARCHAR

  substrait-io/substrait-java#1386 · Filter by author nielspardon opened on Oct 5, 2026
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• isthmus: ITEM on a ROW passes Calcite's 1-based index through as a 0-based struct field

  substrait-io/substrait-java#1385 · Filter by author nielspardon opened on Oct 5, 2026

• core: an outer reference to a relation's own anchor from its embedded predicate is typed against the wrong row

  substrait-io/substrait-java#1384 · Filter by author nielspardon opened on Oct 5, 2026

• core: a Join with no condition serializes to a JoinRel that ProtoRelConverter cannot read back

  substrait-io/substrait-java#1383 · Filter by author nielspardon opened on Oct 5, 2026

• core: ExtensionTable drops its filter and best_effort_filter in both proto directions

  substrait-io/substrait-java#1382 · Filter by author nielspardon opened on Oct 5, 2026

• spark: no mapping for the sum0 aggregate

  substrait-io/substrait-java#1381 · Filter by author nielspardon opened on Oct 5, 2026

• core: SubstraitBuilder.equal() declares a required boolean for nullable operands

  substrait-io/substrait-java#1380 · Filter by author nielspardon opened on Oct 5, 2026

• core: SubstraitBuilder arithmetic aggregates hard-code the functions_arithmetic URN, so decimal and datetime inputs throw

  substrait-io/substrait-java#1379 · Filter by author nielspardon opened on Oct 5, 2026

• core: physical join Javadoc describes a removed left_keys fallback and reverses the hash build side

  substrait-io/substrait-java#1378 · Filter by author nielspardon opened on Oct 5, 2026

• core: HashJoin drops build_input, so the build side flips on every round trip

  substrait-io/substrait-java#1377 · Filter by author nielspardon opened on Oct 5, 2026

• core: FunctionOption accepts an empty preference list

  substrait-io/substrait-java#1376 · Filter by author nielspardon opened on Oct 5, 2026

• core: extended expressions omit version and drop expected_type_urls

  substrait-io/substrait-java#1375 · Filter by author nielspardon opened on Oct 5, 2026

• core: ProtoExtendedExpressionConverter cannot read a base schema with a user-defined type

  substrait-io/substrait-java#1374 · Filter by author nielspardon opened on Oct 5, 2026

• core: an extended-expression aggregate measure silently drops its pre-measure filter

  substrait-io/substrait-java#1373 · Filter by author nielspardon opened on Oct 5, 2026

• core: proto import types an outer FieldReference as the whole enclosing row instead of the referenced field

  substrait-io/substrait-java#1372 · Filter by author nielspardon opened on Oct 5, 2026

• core: FieldReference.check() accepts an expression root together with an outer or lambda scope, and toProto silently drops the scope

  substrait-io/substrait-java#1371 · Filter by author nielspardon opened on Oct 5, 2026

• spark: a Hive INSERT carries overwrite in create_mode, which other consumers ignore, so INSERT OVERWRITE can run as an append

  substrait-io/substrait-java#1370 · Filter by author nielspardon opened on Oct 5, 2026

• spark: a file write's target directory is emitted as an unescaped uri_file, so a path containing a space fails to import

  substrait-io/substrait-java#1369 · Filter by author nielspardon opened on Oct 5, 2026

• spark: a CTAS with REPLACE_IF_EXISTS against an existing table fails with an AssertionError instead of replacing it

  substrait-io/substrait-java#1368 · Filter by author nielspardon opened on Oct 5, 2026

• spark: a CTAS round trip drops the target's partitioning and provider

  substrait-io/substrait-java#1366 · Filter by author nielspardon opened on Oct 5, 2026