Hello,
I have an application that inserts multiple rows within a single
partition (= all rows share the same partition key) using a BATCH
statement. Is it possible that other clients can partially read that
batch or is the batch application isolated i.e. other clients can only
read all rows o
This seems to be a good opportunity to dig a bit deeper into certain
operational aspects of NTP. Some things to be aware of:
How NTP Operates [1]
It can take several minutes before ntpd will update the system time for the
first time, while all processes are already started. This can be especial
I have a dev cluster of two Cassandra 2.12 servers on EC2
When adding a new server, I get a
"Streaming error occurred java.lang.AssertionError: Unknown keyspace
system_traces"
exception on the cluster (not the new) server (full log below).
Indeed, when I cqlsh to the cluster server, I see the foll
The Cassandra team is pleased to announce the release of Apache Cassandra
version 2.0.15.
Apache Cassandra is a fully distributed database. It is the right choice
when you need scalability and high availability without compromising
performance.
http://cassandra.apache.org/
Downloads of source a
Done, https://issues.apache.org/jira/browse/CASSANDRA-9413 . Feel free to
improve the description, I've only copy/paste the first message from Kévin.
Thanks.
On Fri, May 15, 2015 at 9:56 PM, Alprema wrote:
> I William file a jira for that, thanks
> On May 12, 2015 10:15 PM, "Jack Krupansky"
>
Hello Martin
If, and only if you have RF=1, single partition mutations (including
batches) are isolated.
Otherwise, with RF>1, even a simple UPDATE is not isolated because one
client can read the updated value on one replica and another client reads
the old value on another replica
On Mon, May
Hi DuyHai,
thanks for your answer. What if I set RF > 1 and the consistency level
for reads and writes to QUORUM? Would that isolate the single-partition
batch update from reads? (I do not consider node failures here between
the write and the read(s)).
On 19.05.15 07:50, DuyHai Doan wrote:
