[jira] [Assigned] (TRAFODION-14) upsert or merge into a table with indexes can result in inconsistency between index and table

["Suresh Subbiah (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/TRAFODION-14?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Suresh Subbiah reassigned TRAFODION-14:
---------------------------------------

    Assignee: Selvaganesan Govindarajan

> upsert or merge into a table with indexes can result in inconsistency between index and table
> ---------------------------------------------------------------------------------------------
>
>                 Key: TRAFODION-14
>                 URL: https://issues.apache.org/jira/browse/TRAFODION-14
>             Project: Apache Trafodion
>          Issue Type: Bug
>            Reporter: Selvaganesan Govindarajan
>            Assignee: Selvaganesan Govindarajan
>            Priority: Critical
>
> Steps to reproduce this problem
> set schema seabase ;
> CREATE TABLE TRAFODION.SEABASE.TEST1
>   (
>     A                                INT NO DEFAULT NOT NULL NOT DROPPABLE
>   , B                                INT DEFAULT NULL
>   , PRIMARY KEY (A ASC)
>   ) 
> ;
> CREATE INDEX IDX1 ON TRAFODION.SEABASE.TEST1
>   (
>     B ASC
>   )
> ;
> CREATE TABLE TRAFODION.SEABASE.TEST2
>   (
>     A                                INT NO DEFAULT NOT NULL NOT DROPPABLE
>   , B                                INT DEFAULT NULL
>   , PRIMARY KEY (A ASC)
>   ) 
> ;
> insert into test2 values (1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(7,7),(8,8),(9,9),(10,10) ;
> prepare s2 from upsert into test1 select * from test2;
> 1) execute s2;
> 2) select * from test1 ;
> If you repeat steps 1 and 2 more than once, at times fewer than 10 rows are selected from the step 2.
> In this particular case select * from test1 involves index scan plan.



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