aokolnychyi commented on issue #327: Introduce startsWith Predicate URL: https://github.com/apache/incubator-iceberg/pull/327#issuecomment-523089442 I would like to follow up with a PR to enable pushdown of `startsWith` in Spark. Are there any limitations that will block me? Apart from changes in `SparkFilters`, we will need to extend `InclusiveMetricsEvaluator`, `ParquetDictionaryRowGroupFilter`, `ParquetMetricsRowGroupFilter` with logic that checks lower/upper bounds in `startsWith`. I think one way to implement this is to take the same number of bytes from prefix and bounds (e.g. slice) and then rely on `UnsignedByteBufComparator` for unsigned lexicographical comparison. Alternatively, we can convert bounds to strings and operate on them. @sujithjay @rdblue @moulimukherjee Any thoughts?
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