在DTCS的小型比赛期间不会删除SStables

Question

我在Cassandra 2.1.12中遇到了这个磁盘空间问题。即使在TTL之后，sstables仍然存在于磁盘上。我在下面给出了我的列族的定义，它是一个时间序列数据，日期作为分区键。

定义：

AND bloom_filter_fp_chance = 0.01
    AND caching = '{"keys":"ALL", "rows_per_partition":"NONE"}'
    AND comment = ''
    AND compaction = {'max_sstable_age_days': '92', 'base_time_seconds': '3600', 'class': 'org.apache.cassandra.db.compaction.DateTieredCompactionStrategy'}
    AND compression = {'sstable_compression': 'org.apache.cassandra.io.compress.LZ4Compressor'}
    AND dclocal_read_repair_chance = 0.1
    AND default_time_to_live = 8640000
    AND gc_grace_seconds = 3600
    AND max_index_interval = 2048
    AND memtable_flush_period_in_ms = 0
    AND min_index_interval = 128
    AND read_repair_chance = 0.0
    AND speculative_retry = '99.0PERCENTILE';