[jira] [Created] (PHOENIX-4288) Indexes not used when ordering by primary key.

["Marcin Januszkiewicz (JIRA)" <ji...@apache.org>]

Marcin Januszkiewicz created PHOENIX-4288:
---------------------------------------------

             Summary: Indexes not used when ordering by primary key.
                 Key: PHOENIX-4288
                 URL: https://issues.apache.org/jira/browse/PHOENIX-4288
             Project: Phoenix
          Issue Type: Bug
            Reporter: Marcin Januszkiewicz


We have a table

CREATE TABLE t (
  rowkey VARCHAR PRIMARY KEY,
  c1 VARCHAR,
  c2 VARCHAR
)

which we want to query by doing partial matches on c1, and keep the ordering of the source table:
SELECT rowkey, c1, c2 FROM t where c1 LIKE 'X0%' ORDER BY rowkey;

We expect most queries to select a small subset of the table, so we create an index to speed up searches:

CREATE LOCAL INDEX t_c1_ix ON t (c1);

However, this index will not be used since Phoenix will always choose not to resort the data.
In our actual use case, adding index hints is not a practical solution.

See also discussion at:
https://lists.apache.org/thread.html/26ab58288eb811d2f074c3f89067163d341e5531fb581f3b2486cf43@%3Cuser.phoenix.apache.org%3E



--
This message was sent by Atlassian JIRA
(v6.4.14#64029)