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Posted to issues@madlib.apache.org by "Heikki Linnakangas (JIRA)" <ji...@apache.org> on 2019/02/01 16:16:00 UTC

[jira] [Created] (MADLIB-1298) MADLIB doesn't work with gp_distribution_policy changes in Greenplum 6

Heikki Linnakangas created MADLIB-1298:
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             Summary: MADLIB doesn't work with gp_distribution_policy changes in Greenplum 6
                 Key: MADLIB-1298
                 URL: https://issues.apache.org/jira/browse/MADLIB-1298
             Project: Apache MADlib
          Issue Type: Bug
            Reporter: Heikki Linnakangas


Recent commits in Greenplum master branch - which will eventually become Greenplum 6 - changed the gp_distribution_policy catalog table's layout. See [https://github.com/greenplum-db/gpdb/commit/69ec6926c2284ff97d8b82282072b5b205e8aa27] and [https://github.com/greenplum-db/gpdb/commit/242783ae9f573bb03da3d89dc689c6743dfce510.]

 

That broke get_distribution_policy() function, in utilities.py_in, because it looks at the renamed gp_distribution_policy.attrnums column. The recommended way to deparse the DISTRIBUTED BY clause of a table is now to use the new pg_catalog.pg_get_table_distributedby() helper function. MADLIB should use that too, when running against GPDB 6.

 

(I'll open a pull request for this shortly)



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