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docs: say which spec version a "spec vX.Y.Z" marker should name

Status: Open.

#1223 In substrait-io/substrait-java;

· nielspardon opened on Sep 1, 2026

isthmus: REVERSE and INITCAP have no FunctionMappings entry, so neither converts from Calcite

Status: Open.

#1222 In substrait-io/substrait-java;

· nielspardon opened on Sep 1, 2026

isthmus: SubstraitTypeSystem caps an interval leading field at 6, putting the top of interval_day range out of reach

bugSomething isn't workingSomething isn't working

isthmus

Status: Open.

#1221 In substrait-io/substrait-java;

· nielspardon opened on Sep 1, 2026

isthmus: the configured type system does not reach the SQL-generation or cluster legs

Status: Open.

#1220 In substrait-io/substrait-java;

· nielspardon opened on Sep 1, 2026

isthmus: a UserTypeMapper's reverse direction only sees user-defined types, so a mapped built-in cannot come back

Status: Open.

#1219 In substrait-io/substrait-java;

· nielspardon opened on Aug 31, 2026

refactor(isthmus): visit(VirtualTableScan) builds one empty LogicalValues per row and two parallel value lists

Status: Open.

#1218 In substrait-io/substrait-java;

· nielspardon opened on Aug 31, 2026

refactor(isthmus): visit(Aggregate) duplicates applyRelCommon's composition, so further RelCommon handling would miss it

Status: Open.

#1217 In substrait-io/substrait-java;

· nielspardon opened on Aug 31, 2026

isthmus: the extension-converter example never calls applyRelCommon, so a custom relation's emit mapping and hint names are dropped

Status: Open.

#1216 In substrait-io/substrait-java;

· nielspardon opened on Aug 31, 2026

isthmus: nothing fails when a relation's conversion forgets applyRelCommon, so its emit mapping is dropped again

Status: Open.

#1215 In substrait-io/substrait-java;

· nielspardon opened on Aug 31, 2026

isthmus: a hint's output names are dropped whenever a column is a struct, because nested field names are compared

Status: Open.

#1214 In substrait-io/substrait-java;

· nielspardon opened on Aug 31, 2026

isthmus: visit(NamedWrite) ignores output_mode, so a write declaring MODIFIED_RECORDS converts to a ROWCOUNT TableModify

Status: Open.

#1213 In substrait-io/substrait-java;

· nielspardon opened on Aug 31, 2026

core: Rel.Remap validates none of its indices, so a malformed emit mapping fails as a bare index exception deep in a consumer

Status: Open.

#1212 In substrait-io/substrait-java;

· nielspardon opened on Aug 31, 2026