Hi, I have reloaded the data in my cluster of 3 nodes RF: 2. I have loaded about 2 billion rows in one table. I use LeveledCompactionStrategy on my table. I use version 2.1.6. I use the default cassandra.yaml, only the ip address for seeds and throughput has been change.
I loaded my data with simple insert statements. This took a bit more than one day to load the data… and one more day to compact the data on all nodes. For me this is quite acceptable since I should not be doing this again. I have done this with previous versions like 2.1.3 and others and I basically had absolutely no problems. Now I read the log files on the client side, there I see no warning and no errors. On the nodes side there I see many WARNING, all related with tombstones, but there are no ERRORS. My problem is that I see some *many missing records* in the DB, and I have never observed this with previous versions. 1) Is this a know problem? 2) Do you have any idea how I could track down this problem? 3) What is the meaning of this WARNING (the only type of ERROR | WARN I could find)? WARN [SharedPool-Worker-2] 2015-06-15 10:12:00,866 SliceQueryFilter.java:319 - Read 2990 live and 16016 tombstone cells in gttdata.alltrades_co_rep_pcode for key: D:07 (see tombstone_warn_threshold). 5000 columns were requested, slices=[388:201001-388:201412:!] 4) Is it possible to have Tombstone when we make no DELETE statements? I’m lost… Thanks for your help.
