Glad you got it figured out, but I'm confused about the @Version
annotation. The DataStax Java Driver just handles statements, as far as I
know it's never going to modify statement text. It sounds like you're
using an entity mapping framework on top of the java driver, which uses
@Version for opt
Hi All.
I think we got the root-cause.
One of the fields in one of the class was marked with "@Version"
annotation, which was causing the Cassandra-Java-Driver to insert "If Not
Exists" in the insert query, thus invoking SERIAL consistency-level.
We removed the annotation (didn't really need tha
Hmm... ok.
Ideally, we require ::
a)
The intra-DC-node-syncing takes place at the statement/query level.
b)
The inter-DC-node-syncing takes place at cassandra level.
That way, we don't spend too much delay at the statement/query level.
For the so-called CAS/lightweight transactions, the abov
What Eric means is that SERIAL consistency is a special type of consistency
that is only invoked for a subset of operations: those that use
CAS/lightweight transactions, for example "IF NOT EXISTS" queries.
The differences between CAS operations and standard operations are
significant and there ar
Hi Eric,
I am sorry, but I don't understand.
If there had been some issue in the configuration, then the
consistency-issue would be seen everytime (I guess).
As of now, the error is seen sometimes (probably 30% of times).
On Mon, Nov 2, 2015 at 10:24 PM, Eric Stevens wrote:
> Serial consistenc
Serial consistency gets invoked at the protocol level when doing
lightweight transactions such as CAS operations. If you're expecting that
your topology is RF=2, N=2, it seems like some keyspace has RF=3, and so
there aren't enough nodes available to satisfy serial consistency.
See
http://docs.da
Hi All.
I have a 2*2 Network-Topology Replication setup, and I run my application
via DataStax-driver.
I frequently get the errors of type ::
*Cassandra timeout during write query at consistency SERIAL (3 replica were
required but only 0 acknowledged the write)*
I have already tried passing a "w
