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https://issues.apache.org/jira/browse/CASSANDRA-10376?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14877088#comment-14877088
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Aleksey Yeschenko commented on CASSANDRA-10376:
-----------------------------------------------
To quote [~bdeggleston] again:
{quote}
Here is the commit that fixes the failure. This test is still failing, but this
time it's because there's a NPE on the 2.1 node, although the test itself isn't
failing any assertions.
Regarding the NPE, the cause appears to be the 3.0 node sending the normal
cells for a partition in the first read, then only the static cells for the
same partition in the subsequent reads, which causes
AbstractQueryPager.firstNonStaticCell to return null.
{quote}
> Fix upgrade_tests/paging_test.py:TestPagingData.static_columns_paging_test
> --------------------------------------------------------------------------
>
> Key: CASSANDRA-10376
> URL: https://issues.apache.org/jira/browse/CASSANDRA-10376
> Project: Cassandra
> Issue Type: Sub-task
> Reporter: Aleksey Yeschenko
> Assignee: Blake Eggleston
> Fix For: 3.0.x
>
>
> Follow-up to CASSANDRA-10354 to fix the related upgrade issue.
> To quote [~bdeggleston]:
> {quote}
> So the failure is caused by an edge case where a names filter is used in a
> paging query against a table that needs SinglePartitionNamesCommand instances
> converted to SinglePartitionSliceCommand instances in order to be converted
> to legacy read commands.
> If the previous read returned all requested clusterings and a number of rows
> equal to the page size, the subsequent read would have an empty clustering
> names filter. When an empty clustering names filter is converted to a slice
> filter, the slice filter is created with Slices.ALL.
> {quote}
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