[jira] [Updated] (CASSANDRA-8562) Fix checking available disk space before compaction starts

["Marcus Eriksson (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-8562?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Marcus Eriksson updated CASSANDRA-8562:
---------------------------------------
    Attachment: 0001-Check-for-available-disk-space-before-starting-compa.patch

Attaching patch that checks if we have enough space for the sstables created by the compaction

For LCS it sums up all data directories that have space for at least one sstable.

Kept the reduce scope code in DiskAwareRunnable since removing it could break stuff for people running their own custom CompactionTask

> Fix checking available disk space before compaction starts
> ----------------------------------------------------------
>
>                 Key: CASSANDRA-8562
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8562
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Marcus Eriksson
>            Assignee: Marcus Eriksson
>             Fix For: 2.0.12, 2.1.3
>
>         Attachments: 0001-Check-for-available-disk-space-before-starting-compa.patch
>
>
> When starting a compaction we check if there is enough disk space available to start it, otherwise we might (for STCS) reduce the compaction so that the result could fit. Now (since CASSANDRA-8329) we check for the directory to write to a lot later and this can reduce the compaction after we have created the scanners.



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