I am newbie in Cassandra and trying to implement one toy application using Cassandra. I had created one keyspace and few column families in my Cassandra DB but I forgot the name of my cluster. I a...

I want to select specific fields of a table in cassandra and insert them into another table. I do this in sql server like this: INSERT INTO Users(name,family) SELECT name,family FROM Users How ...

I need details from both performance and query aspects, I learnt from some site that only a key can be given when using a columnfamily, if so what would you suggest for my keyspace, I need to use g...

Cassandra published its technical limitations but did not mention the max number of columns allowed. Is there a maximum number of columns? I have a need to store 400+ fields. Is this possible in Ca...

I am trying to configure Cassandra Datastax Community Edition for remote connection on windows, Cassandra Server is installed on a Windows 7 PC, With the local CQLSH it connects perfectly to the ...

I am newbie to cassandra . I need to copy data from one columnFamily to another columnFamily in same keyspace in cassandra .Say for ex we have a A1 columnFamily in keyspace K1 , so now i need to cr...

I am a java developer and am very new to Linux and Cassandra. I am using CentOS6. I am trying to install Cassandra3.4 in the Linux machine. I have followed the steps mentioned in here. Looks like ...

According to this issue, Cassandra's storage format was updated in 3.0. If previously I could use cassandra-cli to see how the SSTable is built, to get something like this: [default@test] list ph...

I'd the following Cassandra Model:- class Automobile(Model): manufacturer = columns.Text(primary_key=True) year = columns.Integer(index=True) model = columns.Text(index=True) price = columns.D...

I am trying to get familiar with Apache Cassandra, for a particular PoC work. After going through various articles on the net, trying out various libraries/clients available, a particular question ...

I have a table like this in CQL3 create table product_info ( key text, value text, Primary key (key) ); It is a vertical table . Since I can insert new rows with (key , value ) pair. Sample ...

I have one column family that has multiple counter columns. Now I want to get their value behalf of different row keys, Means like RangeSlicesQuery or MultigetSliceQuery, I want to apply on counter...

Hello Cassandra Experts, How can I get a list of processes in Cassandra cluster (similiar to the show processlist command of MySQL)? Im puzzled as to why I cannot find any posts anywhere about thi...

I am pulling big amount of data from cassandra 2.0, but unfortunately getting timeout exception. My table: CREATE KEYSPACE StatisticsKeyspace WITH REPLICATION = { 'class' : 'SimpleStrategy', 're...

I am new to Cassandra and I would like to learn more about Cassandra's racks and structure. Suppose I have around 70 column families in Cassandra and two AWS2 instances. How many Data Centres wi...

I am having problems trying to query a wide row in Cassandra 1.2.4 When I tried to query the row using the Cassandra-cli, I obtain this error: Frame size (75209759) larger than max length (1572864...

I am using Cassandra 1.2.5. After creating a column family in Cassandra using cassandra-cli, is it possible to modify the primary key on the column family using either cassandra-cli or CQL? Speci...

I'm trying to get column names but could not get way to get only column names. In cli I executed command describe table nodes, it returned the result: CREATE TABLE nodes ( key text PRIMARY KEY, ...

[root@SudeepMangu bin]# ./cassandra -f xss = -ea -javaagent:/home/sudeep/apache-cassandra-1.2.5-src/lib/jamm-0.2.5.jar -XX:+UseThreadPriorities -XX:ThreadPriorityPolicy=42 -Xms930M -Xmx930M -Xmn20...

Im starting with cassandra, and when I run list or get commands in cassandra-cli, I get results like this: [default@usersdatabase] list users; Using default limit of 100 ------------------- RowKey...