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Posted to issues@iceberg.apache.org by GitBox <gi...@apache.org> on 2019/08/20 18:03:19 UTC
[GitHub] [incubator-iceberg] aokolnychyi opened a new issue #397: Push down
StringStartsWith in Spark IcebergSource
aokolnychyi opened a new issue #397: Push down StringStartsWith in Spark IcebergSource
URL: https://github.com/apache/incubator-iceberg/issues/397
Apart from changes in `SparkFilters`, we will need to extend `InclusiveMetricsEvaluator`, `ParquetDictionaryRowGroupFilter`, `ParquetMetricsRowGroupFilter` with the logic that checks lower/upper bounds in `startsWith`.
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.
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