On Fri, Aug 16, 2013 at 2:39 PM, Dhamodaran Subramanian <
sdhamoda...@gmail.com> wrote:
> Is there a way I can retreive the data by revoking this command.
>
> I see that data files are in places. Any help will be much appreciated.
>
1) snapshot/back up the data files
2) Re-define the original sch
I have a 3-node cluster running 1.2.8, and with no clients connected
(for about an hour) opscenter is showing a heartbeat-like pattern for
total writes in the "Cluster Reads & Writes" panel on the dashboard
ranging from about 10/sec to 26/sec. Total reads on the other hand are
showing a straig
Hey Guys,
I know its stupid question.
I wanted to change the structure of column by adding it as a key but
instead of that I just gave "update columnfamily ;".
It dropped all the other column except my pre existing key column.
I can't afford to lose the data.
Is there a way I can retreive
I understand the intent is to remove select columns, then the simple DELETE
would do.
The other way of doing things is probably having empty placeholders for the
dates/data.
/Arthur
From: Suruchi Deodhar
Sent: Friday, August 16, 2013 2:38 PM
To: user@cassandra.apache.org ; Arthur Zubarev
Su
We are using the cassandra thrift interface to interact with Cassandra.
In our use case, we store time-series data with one column per day (per
row-key) , and we have a fixed number of column families to store data over
time. Since we have data for hundreds of days, we cannot create
column-familie
Not sure what client you use to interact with C*. In your scenario I assume it
is CQL.
So what can go wrong with TRUNCATE?
Regards
Arthur
From: Suruchi Deodhar
Sent: Friday, August 16, 2013 12:23 PM
To: user@cassandra.apache.org
Subject: Deleting column data from Cassandra without setting i
+1 for redis for this use case.
On Aug 16, 2013, at 10:54 AM, Robert Coli wrote:
> On Fri, Aug 16, 2013 at 10:43 AM, Todd Nine wrote:
> We're using expiring columns as a mean for locking.
>
> Perhaps a log structured data store with immutable data files is not ideal
> for your use case?
>
On Fri, Aug 16, 2013 at 10:43 AM, Todd Nine wrote:
> We're using expiring columns as a mean for locking.
Perhaps a log structured data store with immutable data files is not ideal
for your use case?
If I were you, I'd put this use case in Redis and be done with it instead
of trying to get Ca
What about compactions, how often do you run them?
-Original Message-
From: Todd Nine
Sent: Friday, August 16, 2013 1:43 PM
To: user@cassandra.apache.org
Subject: Configuring ephemeral only column family
Hi guys,
We're using expiring columns as a mean for locking. All of this
data sh
Hi guys,
We're using expiring columns as a mean for locking. All of this
data should be completely ephemeral with only a 5 second ttl per
column. We're seeing some strangeness where our rows are getting
quite large with tombstones. We really don't need the commit log, nor
the sstables in our u
On 8/16/13 9:05 AM, Tyler Hobbs wrote:
On Fri, Aug 16, 2013 at 3:35 AM, Sergey Leschenko mailto:sergle...@gmail.com>> wrote:
Is there some list of planned drivers for other programming languages?
I don't know if we have a list somewhere, but we're currently working on
a C/C++ driver and w
What is the best way to delete column data from a Cassandra cluster after
it is backed up with snapshots (using Priam or otherwise) to a stable
storage?
We dont want to use the TTL option, since we would like to restore the
backed-up data in the Cassandra cluster at a later time. Setting a TTL
wo
Read
http://www.datastax.com/dev/blog/cql3-table-support-in-hadoop-pig-and-hive
And look at
http://fossies.org/dox/apache-cassandra-1.2.8-src/CqlPagingRecordReader_8java_source.html
- Jon
On Fri, Aug 16, 2013 at 12:08 PM, Keith Freeman <8fo...@gmail.com> wrote:
> I've run into the same proble
I've run into the same problem, surprised nobody's responded to you.
Any time someone asks "how do I page through all the rows of a table in
CQL3?", the standard answer is token() and limit. But as you point out,
this method will often miss some data from wide rows.
Maybe a Cassandra expert
On Fri, Aug 16, 2013 at 3:35 AM, Sergey Leschenko wrote:
> Is there some list of planned drivers for other programming languages?
I don't know if we have a list somewhere, but we're currently working on a
C/C++ driver and we'd like to make sure that good Ruby, node.js, and
(probably) PHP drivers
just to update everyone, as per expert advices i tried running this on
Linux machine but i still have exact same problem on linux also...even no
difference in performance...I tried with default yaml and heap size of
8GB..Now advise me on cassandra linux optmizations, will try those...
Naresh
On W
On Tue, Aug 6, 2013 at 1:41 AM, Tyler Hobbs wrote:
> For those of you using pycassa or the cassandra dbapi2 driver, I wanted to
> let you know that a beta version of the DataStax python driver is available
> on GitHub here: https://github.com/datastax/python-driver
>
​Thanks!
Is there some list
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