rdblue commented on a change in pull request #398: Push down StringStartsWith in Spark IcebergSource URL: https://github.com/apache/incubator-iceberg/pull/398#discussion_r317836527
########## File path: parquet/src/main/java/org/apache/iceberg/parquet/ParquetDictionaryRowGroupFilter.java ########## @@ -294,6 +294,11 @@ public Boolean or(Boolean leftResult, Boolean rightResult) { return ROWS_MIGHT_MATCH; } + @Override + public <T> Boolean startsWith(BoundReference<T> ref, Literal<T> lit) { + return ROWS_MIGHT_MATCH; Review comment: I think this can be implemented. If any dictionary value starts with the prefix, then some row will match. But if all dictionary values do not start with the prefix, then the row group can be skipped. (This would also need to check `isFallback` and return `ROWS_MIGHT_MATCH` if so) ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@iceberg.apache.org For additional commands, e-mail: issues-h...@iceberg.apache.org