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https://issues.apache.org/jira/browse/CASSANDRA-14079?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16273603#comment-16273603
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Joel Knighton commented on CASSANDRA-14079:
-------------------------------------------

It looks like this broke the build on 3.11/trunk. On trunk only, there's a 
place in {{AbstractCompactionStrategyTest}} where we pass a 
{{TableMetadataRef}} instead of a {{TableMetadata}}. On 3.11/trunk, it looks 
like there's a missing {{removeUnsafe}} test method on {{Tracker}} that 
{{AbstractCompactionStrategyTest}} uses. It looks like that's missing on all 
branches, so maybe it just got left out of the commit. 

[~pauloricardomg] ^

> Prevent compaction strategies from looping indefinitely
> -------------------------------------------------------
>
>                 Key: CASSANDRA-14079
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-14079
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Paulo Motta
>            Assignee: Paulo Motta
>            Priority: Minor
>             Fix For: 3.11.2, 4.0
>
>
> As a result of CASSANDRA-13948, LCS was looping indefinitely trying to 
> generate the same candidates for SSTables which were not on the tracker.
> We should add a protection on compaction strategies against looping 
> indefinitely to avoid similar bugs in the future.



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