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https://issues.apache.org/jira/browse/CASSANDRA-9744?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jonathan Ellis resolved CASSANDRA-9744.
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Resolution: Duplicate
> unrealistic pending compactions displayed
> -----------------------------------------
>
> Key: CASSANDRA-9744
> URL: https://issues.apache.org/jira/browse/CASSANDRA-9744
> Project: Cassandra
> Issue Type: Bug
> Reporter: Christophe
> Attachments: compact.png
>
>
> Hi there,
> I am on 2.1.7. I am using DateTieredCompactionStrategy with the following
> parameters:
> min_threshold 16
> max_threshold 16
> base_time_seconds 300
> max_stable_age_days 0.05
> Apart from that, nothing exotic. I dump an sstable of about 18M every 12 sec
> I would say.
> Maybe 1 hour after creating my cluster, I can see that:
> 1. the number of SSTables has constantly been below 60.
> 2. Most of the time, I have between 1 and 4 pending compaction.
> 3. I occasionaly have a large number of pending compactions (30-40) for a
> short period of time (a few min)
> 4. I witness on 1 node 1610 pending compaction, on another node 367 pending
> compaction, for a short period of time (a few min)
> Item 4 makes me thing there is a bug as I don't see how I can have that many
> pending compaction with less than 50 sstable.
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