Are you sure this isn't read-repair? http://wiki.apache.org/cassandra/ReadRepair
2012/4/11 Thibaut Britz <thibaut.br...@trendiction.com> > Also executing the same multiget rangeslice query over the same range > again will trigger the same writes again and again. > > On Wed, Apr 11, 2012 at 5:41 PM, Thibaut Britz < > thibaut.br...@trendiction.com> wrote: > >> Hi, >> >> I just diagnosted this strange behavior: >> >> When I fetch a rangeslice through hector and set the consistency level to >> quorum, according to cfstats (and also to the output files on the hd), >> cassandra seems to execute a write request for each read I execute. The >> write count in cfstats is increased when I execute the rangeslice function >> over the same range again and again (without saving anything at all). >> >> If I set the consitency level to ONE, no writes are executed. >> >> How can I disable this? Why are the records rewritten each time, even >> though I don't want them to be rewritten? >> >> Thanks, >> Thibaut. >> >> >> Code: >> Keyspace ks = getConnection(cluster, >> consistencylevel); >> >> RangeSlicesQuery<String, String, V> rangeSlicesQuery = >> HFactory.createRangeSlicesQuery(ks, StringSerializer.get(), >> StringSerializer.get(), s); >> >> rangeSlicesQuery.setColumnFamily(columnFamily); >> rangeSlicesQuery.setColumnNames(column); >> >> rangeSlicesQuery.setKeys(start, end); >> rangeSlicesQuery.setRowCount(maxrows); >> >> QueryResult<OrderedRows<String, String, V>> result = >> rangeSlicesQuery.execute(); >> return result.get(); >> >> >> >> > -- With kind regards, Robin Verlangen www.robinverlangen.nl
