The nulls in the original data created the tombstones. They won’t go away until gc_grace_seconds have passed (default is 10 days).
On Dec 7, 2015, at 4:46 PM, Kai Wang <dep...@gmail.com> wrote: > I bulkloaded a few tables using CQLSStableWrite/sstableloader. The data are > large amount of wide rows with lots of null's. It takes one day or two for > the compaction to complete. sstable count is at single digit. Maximum > partition size is ~50M and mean size is ~5M. However I am seeing frequent > read query timeouts caused by tombstone_failure_threshold (100000). These > tables are basically read-only. There're no writes. > > I just kicked off compaction on those tables using nodetool. Hopefully it can > remove those tombstones. But is it normal to have these many tombstones after > the initial compactions? Is this related to the fact the original data has > lots of nulls? > > Thanks.
