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https://issues.apache.org/jira/browse/CASSANDRA-15042?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
William Preston updated CASSANDRA-15042:
----------------------------------------
Description:
Cassandra 3.11.4
Running a query in cqlsh with TRACING ON
Secondary indexes all report cardinalities as *1*.
trace output:
{noformat}
Index mean cardinalities are
country_idx:1,company_idx:1,source_idx:1,domain_idx:1. Scanning with
country_idx.
{noformat}
Cassandra 2.2.x and its' predecessors reported cardinalities > 1 in cqlsh
tracing output:
{noformat}
Candidate index mean cardinalities are
CompositesIndexOnRegular{columnDefs=[ColumnDefinition
{name=country, type=org.apache.cassandra.db.marshal.UTF8Type, kind=REGULAR,
componentIndex=0, indexName=country_idx, indexType=COMPOSITES}
]}:2, CompositesIndexOnRegular{columnDefs=[ColumnDefinition
{name=company, type=org.apache.cassandra.db.marshal.UTF8Type, kind=REGULAR,
componentIndex=0, indexName=company_idx, indexType=COMPOSITES}
]}:1210, CompositesIndexOnRegular{columnDefs=[ColumnDefinition
{name=source, type=org.apache.cassandra.db.marshal.UTF8Type, kind=REGULAR,
componentIndex=0, indexName=source_idx, indexType=COMPOSITES}
]}:501804, CompositesIndexOnRegular{columnDefs=[ColumnDefinition
{name=domain, type=org.apache.cassandra.db.marshal.UTF8Type, kind=REGULAR,
componentIndex=0, indexName=domain, indexType=COMPOSITES}
]}:325801.
Scanning with country_idx.{noformat}
was:
Cassandra 3.11.4
Running a query in cqlsh with TRACING ON
Secondary indexes all report cardinalities as *1*.
trace output:
{noformat}
Index mean cardinalities are
country_idx:1,company_idx:1,source_idx:1,domain_idx:1. Scanning with
country_idx.
{noformat}
Cassandra 2.2.x and its' predecessors reported cardinalities > 1 in cqlsh
tracing output:
{noformat}
Candidate index mean cardinalities are
CompositesIndexOnRegular{columnDefs=[ColumnDefinition
{name=country, type=org.apache.cassandra.db.marshal.UTF8Type, kind=REGULAR,
componentIndex=0, indexName=country_idx, indexType=COMPOSITES}
]}:*2*, CompositesIndexOnRegular{columnDefs=[ColumnDefinition
{name=company, type=org.apache.cassandra.db.marshal.UTF8Type, kind=REGULAR,
componentIndex=0, indexName=company_idx, indexType=COMPOSITES}
]}:*1210*, CompositesIndexOnRegular{columnDefs=[ColumnDefinition
{name=source, type=org.apache.cassandra.db.marshal.UTF8Type, kind=REGULAR,
componentIndex=0, indexName=source_idx, indexType=COMPOSITES}
]}:*501804*, CompositesIndexOnRegular{columnDefs=[ColumnDefinition
{name=domain, type=org.apache.cassandra.db.marshal.UTF8Type, kind=REGULAR,
componentIndex=0, indexName=domain, indexType=COMPOSITES}
]}:*325801*.
Scanning with country_idx.{noformat}
> cqlsh tracing output reports all secondary "Index mean cardinalities" are 1.
> -----------------------------------------------------------------------------
>
> Key: CASSANDRA-15042
> URL: https://issues.apache.org/jira/browse/CASSANDRA-15042
> Project: Cassandra
> Issue Type: Bug
> Components: Legacy/Tools
> Reporter: William Preston
> Priority: Minor
>
> Cassandra 3.11.4
> Running a query in cqlsh with TRACING ON
> Secondary indexes all report cardinalities as *1*.
> trace output:
> {noformat}
> Index mean cardinalities are
> country_idx:1,company_idx:1,source_idx:1,domain_idx:1. Scanning with
> country_idx.
> {noformat}
> Cassandra 2.2.x and its' predecessors reported cardinalities > 1 in cqlsh
> tracing output:
> {noformat}
> Candidate index mean cardinalities are
> CompositesIndexOnRegular{columnDefs=[ColumnDefinition
> {name=country, type=org.apache.cassandra.db.marshal.UTF8Type, kind=REGULAR,
> componentIndex=0, indexName=country_idx, indexType=COMPOSITES}
> ]}:2, CompositesIndexOnRegular{columnDefs=[ColumnDefinition
> {name=company, type=org.apache.cassandra.db.marshal.UTF8Type, kind=REGULAR,
> componentIndex=0, indexName=company_idx, indexType=COMPOSITES}
> ]}:1210, CompositesIndexOnRegular{columnDefs=[ColumnDefinition
> {name=source, type=org.apache.cassandra.db.marshal.UTF8Type, kind=REGULAR,
> componentIndex=0, indexName=source_idx, indexType=COMPOSITES}
> ]}:501804, CompositesIndexOnRegular{columnDefs=[ColumnDefinition
> {name=domain, type=org.apache.cassandra.db.marshal.UTF8Type, kind=REGULAR,
> componentIndex=0, indexName=domain, indexType=COMPOSITES}
> ]}:325801.
> Scanning with country_idx.{noformat}
>
>
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