RE: Tombstone warnings in log file

2017-12-04 Thread wxn...@zjqunshuo.com
Got it. Thank you. From: Meg Mara Date: 2017-12-05 01:54 To: user@cassandra.apache.org Subject: RE: Tombstone warnings in log file Simon, It means that in processing your queries, Cassandra is going through that many tombstone cells in order to return your results. It is because some of the p

RE: Tombstone warnings in log file

2017-12-04 Thread Meg Mara
Simon, It means that in processing your queries, Cassandra is going through that many tombstone cells in order to return your results. It is because some of the partitions that you are querying for have already expired. The warning is just cassandra's way of letting you know that your reads are

Re: update a record which does not exists

2017-12-04 Thread Oleksandr Shulgin
On Mon, Dec 4, 2017 at 4:13 AM, Peng Xiao <2535...@qq.com> wrote: > Dear All, > If we update a record which actually does not exist in Cassandra,will it > generate a new record or exit? > > UPDATE columnfamily SET data = 'test data' WHERE key = 'row1'; > as in CQL Update and insert are semanticall