Hello all,
We are trying to develop a language corpus by using Cassandra as its
storage medium.
https://gist.github.com/cdwijayarathna/7550176443ad2229fae0 shows the types
of information we need to extract from corpus interface.
So we designed schema at
https://gist.github.com/cdwijayarathna/6491
I have a cluster with RF=3. If I shut down one node, add a bunch of data to the
cluster, I don’t see a bunch of records added to system.hints. Also, du of
/var/lib/cassandra/data/system/hints of the nodes that are up shows that hints
aren’t being stored. When I start the down node, its data does
http://www.datastax.com/documentation/cassandra/2.0/cassandra/configuration/configCassandra_yaml_r.html?scroll=reference_ds_qfg_n1r_1k__hinted_handoff_enabled
Rahul
> On Dec 14, 2014, at 9:46 AM, Robert Wille wrote:
>
> I have a cluster with RF=3. If I shut down one node, add a bunch of data to
Well your data model looks fine at a glance, a lot of tables, but they
appear to be mapping to logically obvious query paths. This denormalization
will make your queries fast but eat up more disk, and if disk is really a
pain point, Id suggest looking at your economics a bit, and look at your
trade
Hi Ryan,
Thank you very much. This helps a lot.
On Sun, Dec 14, 2014 at 9:14 PM, Ryan Svihla wrote:
>
> Well your data model looks fine at a glance, a lot of tables, but they
> appear to be mapping to logically obvious query paths. This denormalization
> will make your queries fast but eat up mo
It looks like you will have quite a few “combinatoric explosions” to cope with.
In addition to 1.5M words, you have bigrams – combinations of two and three
words. You need to get a handle on the cardinality of each of your tables.
Bigrams and trigrams could give you who knows how many millions
Hello,
I am wondering if there is a way to obtain results from a table where only the
results from the local partition are returned in the query?
To give some background, my application requires millions of timers and since
queue-like implementations are a bad fit/anti-pattern for Cassandra, I
Hi Jack ,
Thanks for replying.
Here what I meant by 1.5M words is not 1.5 Distincts words, it is the count
of all words we added to the corpus (total word instances). Then in
word_frequency and word_ordered_frequency CFs, we have a row for each
distinct word with its frequency (two CFs have same
I’ve got "hinted_handoff_enabled: true" in cassandra.yaml. My settings are all
default except for the DC, listen addresses and snitch. I should have mentioned
this in my original post.
On Dec 14, 2014, at 8:02 AM, Rahul Neelakantan wrote:
> http://www.datastax.com/documentation/cassandra/2.0/c
Hi Robert ,
Maybe you need to flush your memtables to actually see the disk usage increase?
This applies to both hosts.
Cheers,
Jens
On Sun, Dec 14, 2014 at 3:52 PM, Robert Wille wrote:
> I have a cluster with RF=3. If I shut down one node, add a bunch of data to
> the cluster, I don’t see a
Hi,
I am using Cassandra stress tool provided in the distribution 2.1.2. I
wonder what does the "-node" argument mean. Dose it specify the cluster
server node or stress client node?
In the document, it says
"Splitting up a load over multiple cassandra-stress instances on different
nodes: This is
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