That is normal behavior: In general case Spark doesn't guarantee specific order. Append mode doesn't append to file, it appends to directory.
In order to make queries running efficiently, ORC files should be created to support those patterns. -Identify most important/frequent queries that ...
I have a solution: I will write file ORC, Parquet with order column same with the target table's columns. But I don't have a way get order column ...
It was designed to overcome limitations of the other Hive file formats. Using ORC files improves performance when Hive is ...
about about sorting: https://stackoverflow.com/a/47416027/2700344.
Columnar file formats have become the primary storage choice for big data
to validate ordering in an ORC file. I need each file to be ordered by a column, Is there a sure shot way of ensuring the sort order in an ORC file is as I expect it?
Parquet and ORC file formats both support predicate pushdown (also
Qubole recommends that you use ORC file format; ORC outperforms text format ... Presto does automatic JOIN re-ordering only when the feature is enabled.
(1) If a person who files a petition pursuant to this section requests an ex parte order, the court shall hold an ex parte hearing as soon as possible after the ...