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https://issues.apache.org/jira/browse/CASSANDRA-12144?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15382393#comment-15382393
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Sylvain Lebresne commented on CASSANDRA-12144:
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Also, I don't really know what are the current state of upgrade tests, so
probably not at all that patch fault, but the ones you link above have quite a
few failures.
> Undeletable rows after upgrading from 2.2.4 to 3.0.7
> ----------------------------------------------------
>
> Key: CASSANDRA-12144
> URL: https://issues.apache.org/jira/browse/CASSANDRA-12144
> Project: Cassandra
> Issue Type: Bug
> Reporter: Stanislav Vishnevskiy
> Assignee: Alex Petrov
>
> We upgraded our cluster today and now have a some rows that refuse to delete.
> Here are some example traces.
> https://gist.github.com/vishnevskiy/36aa18c468344ea22d14f9fb9b99171d
> Even weirder.
> Updating the row and querying it back results in 2 rows even though the id is
> the clustering key.
> {noformat}
> user_id | id | since | type
> -------------------+--------------------+--------------------------+------
> 116138050710536192 | 153047019424972800 | null | 0
> 116138050710536192 | 153047019424972800 | 2016-05-30 14:53:08+0000 | 2
> {noformat}
> And then deleting it again only removes the new one.
> {noformat}
> cqlsh:discord_relationships> DELETE FROM relationships WHERE user_id =
> 116138050710536192 AND id = 153047019424972800;
> cqlsh:discord_relationships> SELECT * FROM relationships WHERE user_id =
> 116138050710536192 AND id = 153047019424972800;
> user_id | id | since | type
> --------------------+--------------------+--------------------------+------
> 116138050710536192 | 153047019424972800 | 2016-05-30 14:53:08+0000 | 2
> {noformat}
> We tried repairing, compacting, scrubbing. No Luck.
> Not sure what to do. Is anyone aware of this?
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