Github user sansanichfb commented on a diff in the pull request:
https://github.com/apache/incubator-hawq/pull/1249#discussion_r119723516
--- Diff:
pxf/pxf-api/src/main/java/org/apache/hawq/pxf/api/StatsAccessor.java ---
@@ -29,11 +29,13 @@
/**
* Method which reads needed statistics for current split
+ * @throws Exception if retrieving the stats failed
*/
public void retrieveStats() throws Exception;
/**
* Returns next tuple based on statistics information without actual
reading of data
+ * @return only one row
--- End diff --
@return next row without reading it from disk
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