Thank you very much S. Alborghetti I will consider that suggestion.
Saludos
Jean Carlo
"The best way to predict the future is to invent it" Alan Kay
On Thu, Mar 10, 2016 at 5:47 AM, Stefania Alborghetti <
stefania.alborghe...@datastax.com> wrote:
> On Tue, Mar 8, 2016 at 8:39 PM, Jean Carlo <jean.jeancar...@gmail.com>
> wrote:
>
> > Hi guys,
> >
> > I use cassandra stress to populate the next table
> >
> > CREATE TABLE cf1 (
> > kvalue text,
> > ktype text,
> > prov text,
> > dname text,
> > dattrib blob,
> > dvalue text,
> > PRIMARY KEY (kvalue, ktype, prov, dname)
> > ) WITH bloom_filter_fp_chance = 0.01
> > AND caching = '{"keys":"ALL", "rows_per_partition":"60"}'
> > AND comment = ''
> > AND compaction = {'class':
> > 'org.apache.cassandra.db.compaction.LeveledCompactionStrategy'}
> > AND compression = {'sstable_compression':
> > 'org.apache.cassandra.io.compress.SnappyCompressor'}
> > AND dclocal_read_repair_chance = 0.02
> > AND default_time_to_live = 0
> > AND gc_grace_seconds = 864000
> > AND max_index_interval = 2048
> > AND memtable_flush_period_in_ms = 0
> > AND min_index_interval = 128
> > AND read_repair_chance = 0.01
> > AND speculative_retry = '99.0PERCENTILE';
> >
> > And cassandra stress create the next string to the field kvalue of type
> > text:
> >
> > "P*d,xY\x03m\x1b\x10\x0b$\x04pt-G\x08\n`7\x1fs\x15kH\x02i1\x16jf%YM"
> >
> > what bothers me is that kvalue has control characters like \x03. do you
> > guys know any way to avoid creating this kind of characters while using
> > cassandra-stress?
> >
> >
> >
> > Thank you very much
> >
> > Jean Carlo
> >
> > "The best way to predict the future is to invent it" Alan Kay
> >
>
>
> There is no way to avoid the control characters (<32 and ==127), other than
> modifying the source code, which is located in
> tools/stress/src/org/apache/cassandra/stress/generate/values/Strings.java.
>
> Changing this line:
>
> chars[i++] = (char) (((v & 127) + 32) & 127);
>
> with this:
>
> chars[i++] = (char) (((v & 127) % 95) + 32);
>
> should work but I could not avoid the expensive modulo operation. You can
> rebuild cassandra-stress with ant stress-build.
>
> I wonder if the original intention was to avoid control characters however,
> given the +32 in the original line. For this reason I've copied this
> message to the dev mailing list.
>
>
> --
>
>
> [image: datastax_logo.png] <http://www.datastax.com/>
>
> Stefania Alborghetti
>
> Apache Cassandra Software Engineer
>
> |+852 6114 9265| stefania.alborghe...@datastax.com
>
