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https://issues.apache.org/jira/browse/CASSANDRA-13075?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15828347#comment-15828347
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Sergio Bossa commented on CASSANDRA-13075:
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Looks better now [~ifesdjeen]!

Just a few more points:
1) As you mentioned, it is missing a test with range tombstones crossing pages.
2) 
[This|https://github.com/ifesdjeen/cassandra/commit/7aa0c7c41960ed11b35545c49ca7e8f869f76e2f#diff-13cb97758bcb11cce8fc6f4cb1990dd6R729]
 should use {{pageSize}}.
3) 
[This|https://github.com/ifesdjeen/cassandra/commit/7aa0c7c41960ed11b35545c49ca7e8f869f76e2f#diff-13cb97758bcb11cce8fc6f4cb1990dd6R785]
 should be probably replaced with {{StubIndex}} (I've used that other one just 
as quick hack).

> 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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