[teiid-issues] [JBoss JIRA] (TEIID-5585) Insert of a disk backed temporary lob into a temp table is un-readable

[Steven Hawkins (Jira)]

     [ https://issues.jboss.org/browse/TEIID-5585?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Steven Hawkins updated TEIID-5585:
----------------------------------
    Description: 
This can be reproduced with a script like:

insert into #temp select 1 as x, cast(repeat('1', 4000) as clob) y;
insert into #temp select 2, concat((select y from #temp where x = 1), (select y from #temp where x = 1));
insert into #temp select 3, concat((select y from #temp where x = 2), (select y from #temp where x = 2));
insert into #temp select 4, concat((select y from #temp where x = 3), (select y from #temp where x = 3));
insert into #temp select 5, concat((select y from #temp where x = 4), (select y from #temp where x = 4));
-- will fail
insert into #temp select 6, concat((select y from #temp where x = 5), (select y from #temp where x = 5))

The #5 clob is unreadable as the backing filestore is removed after insert.

  was:
This can be reproduced with a script like:

insert into #temp select 1 as x, cast(repeat('1', 4000) as clob) y;
insert into #temp select 2, concat((select y from #temp where x = 1), (select y from #temp where x = 1));
insert into #temp select 3, concat((select y from #temp where x = 2), (select y from #temp where x = 2));
insert into #temp select 4, concat((select y from #temp where x = 3), (select y from #temp where x = 3));
-- will fail
insert into #temp select 5, concat((select y from #temp where x = 4), (select y from #temp where x = 4));

The #4 clob is unreadable as the backing filestore is removed after insert.



> Insert of a disk backed temporary lob into a temp table is un-readable
> ----------------------------------------------------------------------
>
>                 Key: TEIID-5585
>                 URL: https://issues.jboss.org/browse/TEIID-5585
>             Project: Teiid
>          Issue Type: Bug
>          Components: Query Engine
>            Reporter: Steven Hawkins
>            Assignee: Steven Hawkins
>            Priority: Major
>             Fix For: 12.0
>
>
> This can be reproduced with a script like:
> insert into #temp select 1 as x, cast(repeat('1', 4000) as clob) y;
> insert into #temp select 2, concat((select y from #temp where x = 1), (select y from #temp where x = 1));
> insert into #temp select 3, concat((select y from #temp where x = 2), (select y from #temp where x = 2));
> insert into #temp select 4, concat((select y from #temp where x = 3), (select y from #temp where x = 3));
> insert into #temp select 5, concat((select y from #temp where x = 4), (select y from #temp where x = 4));
> -- will fail
> insert into #temp select 6, concat((select y from #temp where x = 5), (select y from #temp where x = 5))
> The #5 clob is unreadable as the backing filestore is removed after insert.



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