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https://issues.apache.org/jira/browse/CASSANDRA-13130?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15874277#comment-15874277
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Benjamin Lerer commented on CASSANDRA-13130:
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||[2.2|https://github.com/apache/cassandra/compare/trunk...blerer:13130-2.2]|[utests|http://cassci.datastax.com/view/Dev/view/blerer/job/blerer-13130-2.2-testall/]|[dtests|http://cassci.datastax.com/view/Dev/view/blerer/job/blerer-13130-2.2-dtest/]|
||[3.0|https://github.com/apache/cassandra/compare/trunk...blerer:13130-3.0]|[utests|http://cassci.datastax.com/view/Dev/view/blerer/job/blerer-13130-3.0-testall/]|[dtests|http://cassci.datastax.com/view/Dev/view/blerer/job/blerer-13130-3.0-dtest/]|
||[3.11|https://github.com/apache/cassandra/compare/trunk...blerer:13130-3.11]|[utests|http://cassci.datastax.com/view/Dev/view/blerer/job/blerer-13130-3.11-testall/]|[dtests|http://cassci.datastax.com/view/Dev/view/blerer/job/blerer-13130-3.11-dtest/]|
||[trunk|https://github.com/apache/cassandra/compare/trunk...blerer:trunk]|[utests|http://cassci.datastax.com/view/Dev/view/blerer/job/blerer-13130-trunk-testall/]|[dtests|http://cassci.datastax.com/view/Dev/view/blerer/job/blerer-13130-trunk-dtest/]|
The patches fix 2 problems:
# For lists, the previous operations were not taken into account as the code
was only looking at the prefetched list.
# In 3.0 and after the reconciliation of the Cells was not performed correctly
for complex columns
> Strange result of several list updates in a single request
> ----------------------------------------------------------
>
> Key: CASSANDRA-13130
> URL: https://issues.apache.org/jira/browse/CASSANDRA-13130
> Project: Cassandra
> Issue Type: Bug
> Reporter: Mikhail Krupitskiy
> Assignee: Benjamin Lerer
> Priority: Trivial
>
> Let's assume that we have a row with the 'listColumn' column and value
> \{1,2,3,4\}.
> For me it looks logical to expect that the following two pieces of code will
> ends up with the same result but it isn't so.
> Code1:
> {code}
> UPDATE t SET listColumn[2] = 7, listColumn[2] = 8 WHERE id = 1;
> {code}
> Expected result: listColumn=\{1,2,8,4\}
> Actual result: listColumn=\{1,2,7,8,4\}
> Code2:
> {code}
> UPDATE t SET listColumn[2] = 7 WHERE id = 1;
> UPDATE t SET listColumn[2] = 8 WHERE id = 1;
> {code}
> Expected result: listColumn=\{1,2,8,4\}
> Actual result: listColumn=\{1,2,8,4\}
> So the question is why Code1 and Code2 give different results?
> Looks like Code1 should give the same result as Code2.
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