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https://issues.apache.org/jira/browse/CASSANDRA-10958?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15090127#comment-15090127
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Taiyuan Zhang edited comment on CASSANDRA-10958 at 1/8/16 10:52 PM:
--------------------------------------------------------------------
The cause of this bizarre out is the following code:
{code:title=SelectStatement.java}
// If there is no rows, then provided the select was a full partition
selection
// (i.e. not a 2ndary index search and there was no condition on
clustering columns),
// we want to include static columns and we're done.
if (!partition.hasNext())
{
if (!staticRow.isEmpty() && (!restrictions.usesSecondaryIndexing()
|| cfm.isStaticCompactTable()) &&
!restrictions.hasClusteringColumnsRestriction())
{
result.newRow(protocolVersion);
for (ColumnDefinition def : selection.getColumns())
{
switch (def.kind)
{
case PARTITION_KEY:
result.add(keyComponents[def.position()]);
break;
case STATIC:
addValue(result, def, staticRow, nowInSec,
protocolVersion);
break;
default:
result.add((ByteBuffer)null);
}
}
}
return;
}
{code}
Why do we need to keep the static row? Can anyone give me a case where we need
to keep the static row?
was (Author: firstprayer):
The cause of this bizarre out is the following code:
{code}
// If there is no rows, then provided the select was a full partition
selection
// (i.e. not a 2ndary index search and there was no condition on
clustering columns),
// we want to include static columns and we're done.
if (!partition.hasNext())
{
if (!staticRow.isEmpty() && (!restrictions.usesSecondaryIndexing()
|| cfm.isStaticCompactTable()) &&
!restrictions.hasClusteringColumnsRestriction())
{
result.newRow(protocolVersion);
for (ColumnDefinition def : selection.getColumns())
{
switch (def.kind)
{
case PARTITION_KEY:
result.add(keyComponents[def.position()]);
break;
case STATIC:
addValue(result, def, staticRow, nowInSec,
protocolVersion);
break;
default:
result.add((ByteBuffer)null);
}
}
}
return;
}
{code}
Why do we need to keep the static row? Can anyone give me a case where we need
to keep the static row?
> Range query with filtering interacts badly with static columns
> --------------------------------------------------------------
>
> Key: CASSANDRA-10958
> URL: https://issues.apache.org/jira/browse/CASSANDRA-10958
> Project: Cassandra
> Issue Type: Bug
> Reporter: Taiyuan Zhang
> Priority: Minor
>
> I'm playing with Cassandra 3. I added a secondary index on a column of
> integer, then I want to do a range query. First it threw an error:
> {code}
> InvalidRequest: code=2200 [Invalid query] message="No supported secondary
> index found for the non primary key columns restrictions"
> {code}
> So I added 'Allow Filtering'
> {code}
> cqlsh:mykeyspace> SELECT * FROM test ;
> id | id2 | age | extra
> ----+-----+-----+-------
> 1 | 1 | 1 | 1
> 2 | 2 | 2 | 2
> (2 rows)
> cqlsh:mykeyspace > CREATE INDEX test_age on test (extra) ;
> cqlsh:mykeyspace > select * FROM test WHERE extra < 2 ALLOW FILTERING ;
> id | id2 | age | extra
> ----+------+-----+-------
> 1 | 1 | 1 | 1
> 2 | null | 2 | null
> (2 rows)
> {code}
> My schema is:
> {code}
> CREATE TABLE mykeyspace.test (
> id int,
> id2 int,
> age int static,
> extra int,
> PRIMARY KEY (id, id2)
> )
> {code}
> I don't know if this is by design or not, but it really does look like a BUG
> to me.
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