Unfortunately, I need to query per list items. That's why I'm running
Cassandra 2.1rc1 (offers secondary indexes for collections).
I'm also studying Dynamo, it seems to be somewhat more dynamic by nature
and allows mixed type lists. As I understood it, also Cassandra supports
dynamic schemas, but
you can set rpc_address to 0.0.0.0, then it will listen on all interfaces.
Also you have to modify security group settings to allow incoming
connection for port 9160. But it is a really bad idea. By this way you open
your cluster to whole world, ssh tunnel is the best way.
On Tue, Jun 24, 2014 at
Yes, I realized the way to use CQL.
I checked the way how map data is represented by using cassandra-cli. For
each element in the map, it use the key as part of the column name and
value as the column value. I just cannot insert this by using thrift API
because I already defined a CompositeType co
Thanks. Is there a way to configure Cassandra to use elastic ip instead of
private ip?
On Tue, Jun 24, 2014 at 9:29 PM, Andrey Ilinykh wrote:
> Cassandra knows nothing about elastic ip. You have to use ssh tunnel or
> run your client on ec2 instance.
>
> Thank you,
> Andrey
>
>
> On Tue, Jun
Cassandra knows nothing about elastic ip. You have to use ssh tunnel or run
your client on ec2 instance.
Thank you,
Andrey
On Tue, Jun 24, 2014 at 8:55 PM, Huiliang Zhang wrote:
> Hi,
>
> I am using Cassandra on EC2 instances. My cassandra always returns private
> ips of the instances to the
Hi,
I am using Cassandra on EC2 instances. My cassandra always returns private
ips of the instances to the thrift program. Then the program cannot connect
to the private ips.
I already changed the
rpc_address: elastic ip
rpc_address: elastic ip
Then I restarted the cassandra cluster. But the sys
Yes. And I advise to set fetchSize to a smaller value than 10 000. 1000 is
a good start. As long as there are still results, the iterator will fetch
data for you by batch of "fechtSize"
On Tue, Jun 24, 2014 at 9:03 PM, ziju feng wrote:
> Does that mean the iterator will give me all the data ins
Does that mean the iterator will give me all the data instead of 1 rows?
On Mon, Jun 23, 2014 at 10:20 PM, DuyHai Doan wrote:
> With the Java Driver, set the fetchSize and use ResultSet.iterator
> Le 24 juin 2014 01:04, "ziju feng" a écrit :
>
> Hi All,
>>
>> I have a wide row table that
"Jeremy, with blob field (ByteBuffer), I can query exact matches (just
encode the value in query), but greater/less than queries would not work.
Any sort of serialization kills "native" ways to query data" --> Not
necessarily. You still use "normal" types (uuid, string, timestamp,...) for
clusterin
What if I need to query by list items?
1. Jeremy, with blob field (ByteBuffer), I can query exact matches (just
encode the value in query), but greater/less than queries would not work.
Any sort of serialization kills "native" ways to query data
2. Even with user defined types, I would need to def
Yes… I confirmed that getBytesUnsafe works…
I also have a unit test for it so if cassandra ever changes anything we'll
pick it up.
One point in your above code. I still think charsets are behind a
synchronized code block.
So your above code wouldn't be super fast on multi-core machines. I
usua
The atomic batches feature is all about moving the multi-statement application
to the server side to avoid having to worry about retry logic on the client
side. I'm glad that the client doesn't have to worry about it.
An earlier thread about consistency level and atomic batches broke the
execu
1) You can use list of strings which are serialized JSONs, or use
ByteBuffer with your own serialization as Jeremy suggested.
2) Use Cassandra 2.1 (not officially released yet) were there is new
feature of user defined types.
Pavel
On Tue, Jun 24, 2014 at 9:18 AM, Jeremy Jongsma wrote:
> Use
You'd be better off using external indexing (ElasticSearch or Solr),
Cassandra isn't really designed for this sort of querying.
On Jun 24, 2014 3:09 AM, "Mike Carter" wrote:
> Hello!
>
>
> I'm a beginner in C* and I'm quite struggling with it.
>
> I’d like to measure the performance of some Cassa
Use a ByteBuffer value type with your own serialization (we use protobuf
for complex value structures)
On Jun 24, 2014 5:30 AM, "Tuukka Mustonen"
wrote:
> Hello,
>
> I need to store a list of mixed types in Cassandra. The list may contain
> numbers, strings and booleans. So I would need something
Can you do you query in the cli after setting "tracing on"?
On Mon, Jun 23, 2014 at 11:32 PM, DuyHai Doan wrote:
> Yes but adding the extra one ends up by * 1000. The limit in CQL3
> specifies the number of logical rows, not the number of physical columns in
> the storage engine
> Le 24 juin 20
And with python use future.has_more_pages and
future.start_fetching_next_page().
On Tue, Jun 24, 2014 at 1:20 AM, DuyHai Doan wrote:
> With the Java Driver, set the fetchSize and use ResultSet.iterator
> Le 24 juin 2014 01:04, "ziju feng" a écrit :
>
> Hi All,
>>
>> I have a wide row table th
Hello,
I need to store a list of mixed types in Cassandra. The list may contain
numbers, strings and booleans. So I would need something like list.
Is this possible in Cassandra and if not, what workaround would you suggest
for storing a list of mixed type items? I sketched a few (using a list pe
Hello!
I'm a beginner in C* and I'm quite struggling with it.
I’d like to measure the performance of some Cassandra-Range-Queries. The
idea is to execute multidimensional range-queries on Cassandra. E.g. there
is a given table of 1million rows with 10 columns and I like to execute
some queries l
You can use getBytesUnsafe on the UTF8 column
--
Sent from my iPhone
> Am 24.06.2014 um 09:13 schrieb Olivier Michallat
> :
>
> Assuming we're talking about the DataStax Java driver:
>
> getBytes will throw an exception, because it validates that the column is of
> type BLOB. But you can use
Assuming we're talking about the DataStax Java driver:
getBytes will throw an exception, because it validates that the column is
of type BLOB. But you can use getBytesUnsafe:
ByteBuffer b = row.getBytesUnsafe("aTextColumn");
// if you want to check it:
Charset.forName("UTF-8").decode(
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