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https://issues.apache.org/jira/browse/CASSANDRA-19704?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17860010#comment-17860010
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Caleb Rackliffe commented on CASSANDRA-19704:
---------------------------------------------
Note: I wasn't able to reproduce this before 4.0, as
\{{buildCompactionCandidatesForAvailableDiskSpace()}} does not exist.
> UnsupportedOperationException is thrown when no space for LCS
> -------------------------------------------------------------
>
> Key: CASSANDRA-19704
> URL: https://issues.apache.org/jira/browse/CASSANDRA-19704
> Project: Cassandra
> Issue Type: Bug
> Components: Local/Compaction/LCS
> Reporter: Zhao Yang
> Assignee: Caleb Rackliffe
> Priority: Normal
> Fix For: 4.0.x, 4.1.x, 5.0.x, 5.x
>
>
> In `CompactionTask#buildCompactionCandidatesForAvailableDiskSpace` with LCS,
> if node has limited disk space and can't remove any sstable from L0 or L1 in
> `LeveledCompactionTask#reduceScopeForLimitedSpace`,
> `LeveledCompactionTask#partialCompactionsAcceptable` will throw
> `UnsupportedOperationException`.
> We should handle `LeveledCompactionTask#partialCompactionsAcceptable` more
> gracefully with `return level <= 1` or simply `true` since
> `reduceScopeForLimitedSpace` only removes sstable from L0 or L1.
> Related https://issues.apache.org/jira/browse/CASSANDRA-17272
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