The tricky thing with documenting the SS tables is that there are a lot
of conditionals in the structure, so it makes for twisty reading. Just
for fun, here's a terrible start I made once:
https://github.com/mustardgrain/cassandra-notes/blob/master/SSTables.md
On Mon, Mar 30, 2015, at 05:12 PM,
Hi all,
I know it's an old topic, but I want to see if anything's changed on the
number of column families that C* supports, either in 1.2.x or 2.x.
For a number of reasons [1], we'd like to support multi-tenancy via
separate column families. The "problem" is that there are around 5,000
tenants t
Somewhat recently the Ownership column was changed to Effective
Ownership.
Previously the formula was essentially 100/. Now it's
100*/. So in previous releases of Cassandra
it would be 100/12 = 8.33, now it would be closer to 25% (8.33*3
(assuming a replication factor of three)).
Kirk
On M
Depending on your needs, you could simply duplicate the comments in two
separate CFs with the column names including time in one and the vote in
the other. If you allow for updates to the comments, that would pose
some issues you'd need to solve at the app level.
On 9/26/12 4:28 PM, Drew Kutch
ats-new-in-cql-3-0
It will still be a no look write. The exception being secondary
indexes and counters which include reads in the write path.
Cheers
-
Aaron Morton
Freelance Developer
@aaronmorton
http://www.thelastpickle.com
On 20/07/2012, at 10:26 AM, Kirk True wrote:
In Cas
In Cassandra you don't read-then-write updates, you just write the updates.
Sorry for being dense, but can you clarify a logical vs. physical row?
Batching is useful for reducing round trips to the server.
On 07/18/2012 06:18 AM, Leonid Ilyevsky wrote:
I have a question about efficiency of up
But isn't QUORUM on a 2-node cluster still 2 nodes?
On 07/17/2012 11:50 PM, Jason Tang wrote:
Yes, for ALL, it is not good for HA, and because we meet problem when
use QUORAM, and current solution is switch Write:QUORAM / Read:QUORAM
when got "UnavailableException" exception.
2012/7/18 Jay Pa
Permissions problems on /var for the user running Cassandra?
Sent from my iPhone
On Jun 2, 2012, at 6:56 PM, "Horacio G. de Oro" wrote:
> Hi! While using Cassandra, I've seen this log messages when running some test
> cases (which insert lots of columns in 4 rows).
> I've tryied Cassandra 1.0.
Disclaimer: I've never tried, but I'd imagine you can drop a JAR
containing the class(es) into the lib directory and perform a rolling
restart of the nodes.
On 5/14/12 11:11 AM, Ertio Lew wrote:
I need to add a custom comparator to a cluster, to sort columns in a
certain customized fashion. Ho
Are these the dynamic JMX ports?
Sent from my iPad
On Apr 19, 2012, at 8:58 AM, W F wrote:
> Hi All,
>
> I did a web search of the archives (hope I looked in the right place) and
> could not find a request like this.
>
> When Cassandra is running, it seems to create to random tcp listen port
Thank You
--
Kirk True
Founder, Principal Engineer
Expert Engineering Firepower
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