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From "Maryann Xue (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PHOENIX-4322) DESC primary key column with variable length does not work in SkipScanFilter
Date Tue, 20 Feb 2018 07:26:00 GMT

    [ https://issues.apache.org/jira/browse/PHOENIX-4322?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16369774#comment-16369774
] 

Maryann Xue commented on PHOENIX-4322:
--------------------------------------

Thank you, [~rajeshbabu], for reminding me! 5.x branch has now caught up with all my recent
check-ins.

> DESC primary key column with variable length does not work in SkipScanFilter
> ----------------------------------------------------------------------------
>
>                 Key: PHOENIX-4322
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-4322
>             Project: Phoenix
>          Issue Type: Bug
>    Affects Versions: 4.11.0
>            Reporter: Maryann Xue
>            Assignee: Maryann Xue
>            Priority: Minor
>             Fix For: 4.14.0
>
>         Attachments: PHOENIX-4322.patch
>
>
> Example:
> {code}
>     @Test
>     public void inDescCompositePK3() throws Exception {
>         String table = generateUniqueName();
>         String ddl = "CREATE table " + table + " (oid VARCHAR NOT NULL, code VARCHAR
NOT NULL constraint pk primary key (oid DESC, code DESC))";
>         Object[][] insertedRows = new Object[][]{{"o1", "1"}, {"o2", "2"}, {"o3", "3"}};
>         runQueryTest(ddl, upsert("oid", "code"), insertedRows, new Object[][]{{"o2",
"2"}, {"o1", "1"}}, new WhereCondition("(oid, code)", "IN", "(('o2', '2'), ('o1', '1'))"),
>             table);
>     }
> {code}
> Here the last column in primary key is in DESC order and has variable length, and WHERE
clause involves an "IN" operator with RowValueConstructor specifying all PK columns. We get
no results.
> This ends up being the root cause for not being able to use child/parent join optimization
on DESC pk columns as described in PHOENIX-3050.



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