dosubot[bot] commented on issue #2934: URL: https://github.com/apache/incubator-hugegraph/issues/2934#issuecomment-3717748680
<!-- Answer --> This is a confirmed HugeGraph-specific bug: when you use a filter like `lt(true)` outside of a `match()` step, HugeGraph tries to convert the boolean `true` to a number (BigDecimal), which throws a `NumberFormatException` because `"true"` is not numeric. This happens due to HugeGraph's internal comparison logic for the `lt` predicate, which expects a numeric or date value and forcibly converts the operand to a number, unlike JanusGraph or TinkerPop, which allow boolean comparison via `Comparable.compareTo` without forced numeric conversion. That's why your query works in JanusGraph/TinkerPop and inside `match()`, but fails in HugeGraph outside of it. There is currently no fix or workaround in HugeGraph except to avoid using boolean values with numeric predicates like `lt`, or to use the `match()` pattern, which is handled differently internally and does not trigger the conversion bug. No recent releases or pull requests address this issue yet. Reference: - [HugeGraph's comparison logic and forced numeric conversion](https://github.com/apache/incubator-hugegraph/blob/a53af864b31f803780a1db31cb20d3d94d5d34fc/hugegraph-server/hugegraph-core/src/main/java/org/apache/hugegraph/backend/query/Condition.java#L54-L824) - [NumericUtil and NumberFormatException root cause](https://github.com/apache/incubator-hugegraph/blob/a53af864b31f803780a1db31cb20d3d94d5d34fc/hugegraph-commons/hugegraph-common/src/main/java/org/apache/hugegraph/util/NumericUtil.java#L301-L360) <!-- Dosu Comment Footer --> *To reply, just mention [@dosu](https://go.dosu.dev/dosubot).* --- <sup>How did I do? 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