Hi, we're on cassandra 3.11.2 . During an anticompaction after repair, TotalDiskSpaceUsed value of one table gradually went from 700GB to 1180GB, and then suddenly jumped back to 700GB. This happened on all nodes involved in the repair. There was no change in PercentRepaired during or after this process. SSTable count is currently 857, with a peak of 2460 during the repair.
Table is using TWCS with 1-day time window. Most daily SSTables are around 1 GB but the oldest one is 156 GB - caused by a major compaction. system.log.6.zip:INFO [CompactionExecutor:9923] 2018-09-10 15:29:54,238 CompactionManager.java:649 - [repair #88c36e30-b4cb-11e8-bebe-cd3efd73ed33] Starting anticompaction for ... on 519 [...] SSTables ... system.log:INFO [CompactionExecutor:9923] 2018-09-12 00:29:39,262 CompactionManager.java:1524 - Anticompaction completed successfully, anticompacted from 0 to 518 sstable(s). What could be the cause of the temporary increase, and how can we prevent it? We are concerned about running out of disk space soon. Thanks for any help Martin --------------------------------------------------------------------- To unsubscribe, e-mail: user-unsubscr...@cassandra.apache.org For additional commands, e-mail: user-h...@cassandra.apache.org
