[jira] [Commented] (CASSANDRA-9645) Make DateTieredCompactionStrategy easier to use

["Wei Deng (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CASSANDRA-9645?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15101321#comment-15101321 ] 

Wei Deng commented on CASSANDRA-9645:
-------------------------------------

Now that we've implemented many of the big tickets for DTCS in C* 2.1.12, is it a good time now to take a look at "better debug logging which explains why certain sstables are selected etc"?

> Make DateTieredCompactionStrategy easier to use
> -----------------------------------------------
>
>                 Key: CASSANDRA-9645
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-9645
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Marcus Eriksson
>              Labels: dtcs
>
> It has proven to be quite difficult to use DTCS properly, we need to make it easier and safer. Things to do could be (but there is surely more things) :
> * put warnings in logs if read repair is used
> * better debug logging which explains why certain sstables are selected etc
> * Auto-tune settings, this could be quite difficult, but we should atleast do CASSANDRA-9130 to default max_sstable_age to gcgs.



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