ache.org
> *Cc:* Erick Ramirez
>
> *Subject:* Re: Can't connect to Cassandra server
>
>
>
> What is the output you are getting if you are issuing nodetool status
> command ...
>
>
>
> On 23 July 2015 at 11:30, Chamila Wijayarathna
> wrote:
>
> Hi Peer,
>
IZE="4G"
>
> And set
>
> MAX_HEAP_SIZE="16G"
>
>
>
> You should uncomment the HEAP_NEWSIZE setting as well. I would leave it
> with the default setting 800M until you are certain it needs to be changed.
>
>
>
>
>
> *From:* Chamila Wijayar
Hi Erick,
In cassandra-env.sh, system_memory_in_mb was set to 2GB, I changed it into
16GB, but I still get the same issue. Following are my complete system.log
after changing cassandra-env.sh, and new cassandra-env.sh.
https://gist.githubusercontent.com/cdwijayarathna/5e7e69c62ac09b45490b/raw/f7
/var/log/cassandra/system.log) for errors
> that prevent your node from starting.
>
>
>
>
>
> *From:* Chamila Wijayarathna [mailto:cdwijayarat...@gmail.com]
> *Sent:* Sunday, July 19, 2015 2:29 PM
>
> *To:* user@cassandra.apache.org
> *Subject:* Re: Can't connect to Ca
ul 19, 2015 at 4:52 PM, Peer, Oded wrote:
> Are you sure your node is up? Do you get a result when running “nodetool
> –h 192.248.15.219 status”?
>
>
>
> *From:* Chamila Wijayarathna [mailto:cdwijayarat...@gmail.com]
> *Sent:* Sunday, July 19, 2015 1:53 PM
> *To:* user@ca
anks,
> Umang Shah
>
> On Sun, Jul 19, 2015 at 1:52 AM, Chamila Wijayarathna <
> cdwijayarat...@gmail.com> wrote:
>
>> Hi Ajay,
>>
>> I tried that also, but still getting the same result.
>>
>> On Sun, Jul 19, 2015 at 2:08 PM, Ajay wrote:
>>
&g
/cqlsh.html
>
> On Sun, Jul 19, 2015 at 2:00 PM, Chamila Wijayarathna <
> cdwijayarat...@gmail.com> wrote:
>
>> Hello all,
>>
>> After starting cassandra, I tried to connect to cassandra from cqlsh and
>> java, but it fails to do so.
>>
>> Follo
Hello all,
After starting cassandra, I tried to connect to cassandra from cqlsh and
java, but it fails to do so.
Following is the error I get while trying to connect to cqlsh.
cqlsh -u sinmin -p xx
Connection error: ('Unable to connect to any servers', {'127.0.0.1':
error(111, "Tried connect
see the API docs
> http://www.datastax.com/drivers/java/2.0/index.html
> Cluster.builder has a withCredentials method
>
> regards
> deepak
>
> On Tue, Feb 10, 2015 at 12:24 PM, Chamila Wijayarathna <
> cdwijayarat...@gmail.com> wrote:
>
>> Hello all,
>&
Hello all,
I changed the authenticator value of my Cassandra database to
'PasswordAuthenticator' in cassandra.yaml file. Previously I used following
code to connect to the database using java.
public void connect(String node) {
cluster = Cluster.builder()
.addContactPoint(nod
Sat Jan 03 2015 at 10:03:57 AM Chamila Wijayarathna <
> cdwijayarat...@gmail.com> wrote:
>
>> Hello all,
>>
>> I have a cassandra node at a machine. When I access cqlsh from the same
>> machne it works properly.
>>
>> But when I tried to connect to it
Hello all,
I have a cassandra node at a machine. When I access cqlsh from the same
machne it works properly.
But when I tried to connect to it's cqlsh using "192.x.x.x" from another
machine, I'm getting an error saying
Connection error: ('Unable to connect to any servers', {'192.x.x.x':
error(11
Hello all,
I am trying to test my application using cassandra-unit with following
schema and data given below.
CREATE TABLE corpus.bigram_time_category_ordered_frequency (
id bigint,
word1 varchar,
word2 varchar,
year int,
category varchar,
frequency int,
PRIMARY KEY((
Phone: +46 708 84 18 32 Web: www.tink.se Facebook Linkedin Twitter
>
>
> On Tue, Dec 16, 2014 at 2:25 PM, Chamila Wijayarathna <
> cdwijayarat...@gmail.com> wrote:
>
>> Hi Jack,
>>
>> So what will be the keys and values of the following CF instance?
>&g
y
> have clustering columns.
>
> “The key” should just be a synonym for “primary key”, although sometimes
> people are loosely speaking about “the partition” (which should be “the
> partition key”) rather than the CQL “row”.
>
> -- Jack Krupansky
>
> *From:* Chamila Wijayarath
Hello all,
I have read a lot about Cassandra and I read about key-value pairs,
partition keys, clustering keys, etc..
Is key mentioned in key-value pair and partition key refers to same or are
they different?
CREATE TABLE corpus.bigram_time_category_ordered_frequency (
id bigint,
word1 va
Hello all,
I have a column family where I have to update a field frequency, but it is
a clustering key. So I am deleting the existing row and adding a new row
again with updated frequency.
I want to free the space used for deleted rows as soon as possible, so I
decided to change gc_grace_seconds
ach row once after the full corpus has
> been read?
>
> Also, what is the corpus size – total word instances, both for the full
> corpus and for the subset containing your 1.5 million words?
>
> -- Jack Krupansky
>
> *From:* Chamila Wijayarathna
> *Sent:* Sunday, Dece
is the cost of scale.
>With even relational databases in the past I've had to use a similar
>strategy to speed up lookups (less different query parameters in that case
>and more queries that would normally require lots of joins).
>
> Hope this helps explain t
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
why, but a "Select count(*) from table;" query is inefficient in
>> Cassandra for non-trivial datasets. You will need a better way to get the
>> number of partition keys of a CF, which hopefully someone else in the user
>> list can provide, as I have never needed to do th
t error, which is unclear in 2.1.2, but I
> believe the error message will be more helpful as of 2.1.3.
>
> On Thu, Dec 11, 2014 at 1:52 PM, Chamila Wijayarathna <
> cdwijayarat...@gmail.com> wrote:
>
>> Hello all,
>>
>> I am trying to get the number of key value pa
Hello all,
I am trying to get the number of key value pairs.
I used following query for this.
select count(*) from corpus.word_usage ;
This returns number of key value pairs when CF is relatively small. But
when I insert more key-velue pairs, I am getting error saying, "errors={},
last_host=127
a - ASF JIRA
> <https://issues.apache.org/jira/issues/?jql=project+%3D+CASSANDRA>
>
>
>
> On Thu, Dec 11, 2014 at 10:15 AM, Chamila Wijayarathna <
> cdwijayarat...@gmail.com> wrote:
>
>> Hi Philip,
>>
>> I'm using version 2.1.2.
>>
Thompson <
philip.thomp...@datastax.com> wrote:
> The full error should be in that node's system.log file. What version are
> you running?
>
> On Thu, Dec 11, 2014 at 9:42 AM, Chamila Wijayarathna <
> cdwijayarat...@gmail.com> wrote:
>
>> Hi Philip,
>
rong.
>
> On Thu, Dec 11, 2014 at 7:37 AM, Chamila Wijayarathna <
> cdwijayarat...@gmail.com> wrote:
>
>> Hello all,
>>
>> I have a column family with following schema.
>>
>> CREATE TABLE corpus.trigram_category_ordered_frequency (
>> i
Hello all,
I have a column family with following schema.
CREATE TABLE corpus.trigram_category_ordered_frequency (
id bigint,
word1 varchar,
word2 varchar,
word3 varchar,
category varchar,
frequency int,
PRIMARY KEY(category,frequency,word1,word2,word3)
);
When I run
as the cluster increases in size. Ideally you could
> bucket frequencies. If that feels like too much work (it's starting to for
> me), this may be better suited to something like solr, elastic search, or
> DSE (cassandra + solr).
>
> Does that help?
>
> Jon
>
>
Hello all,
I have a data set with attributes content and year. I want to put them in
to CF 'words' with attributes ('content','year','frequency'). The CF should
support following operations.
- Frequency attribute of a column can be updated (i.e. - : can run query
like "UPDATE words SET freq
Hello all,
I need to create a Cassandra column family with following attributes.
id bigint,
content varchar,
year int,
frequency int,
I want to get the content with highest frequency in a given year using this
column family. Also when inserting data to table, for given content and
year, I need t
Hi all,
I downloaded 1.2.13 version and ran ./cqlsh inside bin folder, but it says
that "bash: ./cqlsh: Permission denied", when I ran it with sudo it says
"Command not found".
When I ran chmod u+x cqlsh and then tried ./cqlsh, now it says that "Can't
locate transport factory function
cqlshlib.tfa
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