Github user iyerr3 commented on a diff in the pull request:
https://github.com/apache/incubator-madlib/pull/29#discussion_r57402068
--- Diff: src/ports/postgres/modules/utilities/path.py_in ---
@@ -108,8 +107,11 @@ def path(schema_madlib, source_table, output_table,
partition_expr,
*,
nextval('{seq_gen}') AS {id_col_name},
--- End diff --
the sequence should be more efficient in this case. We only need a unique
id for each row, it doesn't have to be gapless - so the sequence would be
better.
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