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From "Aleksey Yeschenko (Jira)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-15405) Mixed mode reads on compact storage tables can return incomplete results
Date Fri, 08 Nov 2019 12:00:00 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-15405?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Aleksey Yeschenko updated CASSANDRA-15405:
------------------------------------------
    Status: Ready to Commit  (was: Changes Suggested)

> Mixed mode reads on compact storage tables can return incomplete results
> ------------------------------------------------------------------------
>
>                 Key: CASSANDRA-15405
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-15405
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Legacy/Core
>            Reporter: Marcus Eriksson
>            Assignee: Marcus Eriksson
>            Priority: Normal
>             Fix For: 3.0.x, 3.11.x
>
>
> In mixed mode (2.1/3.0), when coordinating a read on a 2.1 node, reading data from 3.0
nodes, we [incorrectly trim|https://github.com/apache/cassandra/blob/53f604dc1789a800dbcbc3c8aee77f8f36b8b5db/src/java/org/apache/cassandra/db/LegacyLayout.java#L529]
the result (if it has tombstones) when preparing it for the 2.1 node, this is then [interpreted
by the 2.1 node|https://github.com/apache/cassandra/blob/cassandra-2.1/src/java/org/apache/cassandra/service/pager/AbstractQueryPager.java#L110]
as the pager has been exhausted.



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