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https://issues.apache.org/jira/browse/CASSANDRA-13075?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15825704#comment-15825704
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Alex Petrov commented on CASSANDRA-13075:
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I've prepared a patch which would address both issues you have described:
* we use unfiltered pager now in order to allow seeing partition deletions
and therefore notifying the client about the fact that partition was deleted
* problem with empty extra page is addressed. It was surfacing itself only
when the page size was exactly size of partition. In this case, it tried to
fetch another page, was receiving an empty partition in return. We skip this
corner case here. In other places it's used it doesn't seem to be a problem
Also, it will help to handle range tombstones correctly for indexes as well.
|[3.X|https://github.com/ifesdjeen/cassandra/tree/13075-3.X]|[utest|https://cassci.datastax.com/view/Dev/view/ifesdjeen/job/ifesdjeen-13075-3.X-testall/]|[dtest|https://cassci.datastax.com/view/Dev/view/ifesdjeen/job/ifesdjeen-13075-3.X-dtest/]|
|[3.0|https://github.com/ifesdjeen/cassandra/tree/13075-3.0]|[utest|https://cassci.datastax.com/view/Dev/view/ifesdjeen/job/ifesdjeen-13075-3.0-testall/]|[dtest|https://cassci.datastax.com/view/Dev/view/ifesdjeen/job/ifesdjeen-13075-3.0-dtest/]|
|[trunk|https://github.com/ifesdjeen/cassandra/tree/13075-trunk]|[utest|https://cassci.datastax.com/view/Dev/view/ifesdjeen/job/ifesdjeen-13075-trunk-testall/]|[dtest|https://cassci.datastax.com/view/Dev/view/ifesdjeen/job/ifesdjeen-13075-trunk-dtest/]|
> Indexer is not correctly invoked when building indexes over sstables
> --------------------------------------------------------------------
>
> Key: CASSANDRA-13075
> URL: https://issues.apache.org/jira/browse/CASSANDRA-13075
> Project: Cassandra
> Issue Type: Bug
> Reporter: Sergio Bossa
> Assignee: Alex Petrov
> Priority: Critical
> Attachments: CustomIndexTest.java
>
>
> Following CASSANDRA-12796, {{SecondaryIndexManager#indexPartition()}} calls
> each {{Indexer}} {{begin}} and {{finish}} methods multiple times per
> partition (depending on the page size), as
> {{PartitionIterators#getOnlyElement()}} returns an empty partition even when
> the iterator is exhausted.
> This leads to bugs for {{Indexer}} implementations doing actual work in those
> methods, but even worse, it provides the {{Indexer}} the same input of an
> empty partition containing only a non-live partition deletion, as the
> {{Indexer#partitionDelete()}} method is *not* actually called.
> My proposed solution:
> 1) Stop the iteration before the empty partition is returned and ingested
> into the {{Indexer}}.
> 2) Actually call the {{Indexer#partitionDelete()}} method inside
> {{SecondaryIndexManager#indexPartition()}} (which requires to use a filtered
> iterator so it actually contains the deletion info).
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