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https://issues.apache.org/jira/browse/CASSANDRA-6498?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13872138#comment-13872138
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Sam Tunnicliffe commented on CASSANDRA-6498:
--------------------------------------------
+1 patch looks good to me.
In fact, the same issue affects Solr backed indexes in DSE and our approach is
the same.
> Null pointer exception in custom secondary indexes
> --------------------------------------------------
>
> Key: CASSANDRA-6498
> URL: https://issues.apache.org/jira/browse/CASSANDRA-6498
> Project: Cassandra
> Issue Type: Bug
> Reporter: Andrés de la Peña
> Assignee: Miguel Angel Fernandez Diaz
> Labels: 2i, secondaryIndex, secondary_index
> Attachments: CASSANDRA-6498.patch
>
>
> StorageProxy#estimateResultRowsPerRange raises a null pointer exception when
> using a custom 2i implementation that not uses a column family as underlying
> storage:
> {code}
> resultRowsPerRange = highestSelectivityIndex.getIndexCfs().getMeanColumns();
> {code}
> According to the documentation, the method SecondaryIndex#getIndexCfs should
> return null when no column family is used.
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