[jira] [Assigned] (CASSANDRA-20586) Consider increasing default for auto_repair.sstable_upper_threshold to a higher value

["Chris Lohfink (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-20586?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Chris Lohfink reassigned CASSANDRA-20586:
-----------------------------------------

    Assignee: Jaydeepkumar Chovatia

> Consider increasing default for auto_repair.sstable_upper_threshold to a higher value
> -------------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-20586
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-20586
>             Project: Apache Cassandra
>          Issue Type: Improvement
>          Components: Consistency/Repair
>            Reporter: Andy Tolbert
>            Assignee: Jaydeepkumar Chovatia
>            Priority: Normal
>
> Auto repair's {{sstable_upper_threshold}} default is currently defined as:
> {noformat}
> #     # Threshold to skip repairing tables with too many SSTables. Defaults to 10,000 SSTables to avoid penalizing good
> #     # tables.
> #     sstable_upper_threshold: 10000
> {noformat}
> For clusters with denser nodes (multi-TB) and with LCS, 10k+ SSTables for a given table is not unusual.  It's probably best to have a higher threshold so repairs don't completely stop working for a table, so maybe we should perhaps set this to a default value that is higher and operators can decrease it selectively?
> A default between 30000-50000 would probably be more sensible.



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