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https://issues.apache.org/jira/browse/PHOENIX-7109?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17787934#comment-17787934
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Aron Attila Meszaros edited comment on PHOENIX-7109 at 11/20/23 10:36 AM:
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It seems that the problem is somewhere around OffsetResultIterator.
During debugging I noticed that it's possible to get empty tuple from the
delegate itarator's next function (Line 50).
After modifying
{code:java}
if (isDummy(tuple)){code}
condition to
{code:java}
if (isDummy(tuple) || tuple.isEmpty()) {code}
looks like everything is working fine.
Not sure if this is the root cause of the issue, or the underlying iterator
should not return the empty tuples.
was (Author: JIRAUSER293246):
It seems that the problem is somewhere around OffsetResultIterator.
During debugging I noticed that it's possible to get empty tuple from the
delegate itarator's next function (Line 50).
Modifying
{code:java}
if (isDummy(tuple)){code}
condition to
{code:java}
if (isDummy(tuple) || tuple.isEmpty()) {code}
Not sure if this is the root cause of the issue, or the underlying iterator
should not return the empty tuples.
> Incorrect query results when using OFFSET
> -----------------------------------------
>
> Key: PHOENIX-7109
> URL: https://issues.apache.org/jira/browse/PHOENIX-7109
> Project: Phoenix
> Issue Type: Bug
> Components: phoenix
> Affects Versions: 5.1.3
> Reporter: Aron Attila Meszaros
> Assignee: Aron Attila Meszaros
> Priority: Major
>
> Steps to reproduce:
> # create table test (i1 integer not null, i2 integer not null, i3 integer,
> i4 integer, CONSTRAINT pk PRIMARY KEY (i1, i2));
> # upsert into test select rand()*40, rand()*10000000, null, rand()*100 from
> SYSTEM.CATALOG limit 130000;
> # upsert into test select rand()*40, rand()*10000000, null, rand()*100 from
> test limit 130000;
> Repeat step 3 a few times, then run
> {noformat}
> select * from test where i1=10 and i4=20 offset X;{noformat}
> where X is bigger than the number of rows satisfying the condition.
> There are rows returned by phoenix (expected result is empty set.)
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