Benjamin Black b3k.us> writes:
> > 3. I waited for the data to replicate, which didn't happen.
>
> Correct, you need to run nodetool repair because the nodes were not
> present when the writes came in. You can also use a higher
> consistency level to force read repair before returning data, whi
>
> 1.) What have you found to be the best ratio of Cassandra row cache to memory
free on the system for filesystem cache? Are you tuning it like an RDBMS so
Cassandra has the vast majority of the RAM in the system or are you letting the
filesystem cache do some of the work?
This depends on your
uncle mantis gmail.com> writes:
> Why is everything always in California or Las Vegas?
Because you can convince your employer to pay your vacation near ocean or slots,
i believe ;-)
Hello all,
I currently working on testing of various HA scenarios on small cassandra
cluster of 8 nodes, RF=3. I have a test environment with thrift clients doing
double writes of all operations to cassandra cluster and reliable storage and
cross checking read results. Reads are performed with CL=
> Daniel:
>
> Thanks. That thread helped me solve my problem.
>
> I was able to run a 700k MySQL record import without a single memory error.
>
> I changed the following sections in storage-conf.xml to fix the OutofMemory
errors:
>
> standard
> batch
> 1
Going to standard mode is not
Torsten Curdt vafer.org> writes:
>
> First I tried with my one "cassandra -f" instance then I saw this
> requires a separate IP. (Why?)
This is because your import program becomes a special member of cassandra
cluster to be able to speak internal protocol. And each memboer of cassandra
cluster
Mubarak Seyed apple.com> writes:
>
> - How does client (application) connect to cassandra cluster? Is it always for
one node (and thrift can get ring info) and send the request to connected node
This depends on client library you use. Any cassandra node can accept client
connections and forward
Anthony Ikeda cardlink.com.au> writes:
> One factor I need to consider is our Business
> Intelligence platform that will need to use the data stored for reporting
> purposes.
>
>
>
> We are looking at using Cassandra for our real-time layer for
> Active-Active data centre use and perhaps have
Jonathan Ellis gmail.com> writes:
>
> This will be Riptano's 6th training session (including the four we've
> done that were on-site with a specific customer), and in my humble
> opinion the material's really solid at this point.
>
> We are actively working on lining up other locations.
>
Do y
>
> Has anyone experienced this sort of problem? It would be great to hear from
> anyone who has had experience with this sort of issue and/or suggestions for
> how to deal with it.
>
> Thanks, Eric
Yes, i did. Symptoms you described point to concurrent GC FAILURE. During this
failure concurr
xavier manach tekio.org> writes:
>
> Hi. I search informations for basic tunning of memory in Cassandra.My
situation : I started to test larges imports of data in Cassandra 6.1.My first
import worked fine : 100 Millions row in 2 hours ~ around 1 insert row by
seconds
> My second is slower
>
> Ideally I think we'd like to leave the node up to serve reads, if a
> disk is erroring out on writes but still read-able. In my experience
> this is very common when a disk first begins to fail, as well as in
> the "disk is full" case where there is nothing actually wrong with the
> disk per
Hello,
I am testing how cassandra behaves on single node disk failures to know what to
expect when things go bad.
I had a cluster of 4 cassandra nodes, stress loaded it with client and made 2
tests:
1. emulated disk failure of /data volume on read only stress test
2. emulated disk failure of /comm
Jonathan Ellis gmail.com> writes:
>
> Isn't this the same question I just answered?
>
Umm, I am not sure.
I looked over last 3 days of your replies and did not found my case.
Could you gimme some clue plz ?
Hello,
I am doing some tests of cassandra clsuter behavior on several failure
scenarios.
And i am stuck with the very 1st test - what happens, if 1 node of cluster
becomes unavailable.
I have 4 4gb nodes loaded with write mostly test. Replication Factor is 2.
Normally it works at the rate about 12
Hello,
I am doing some tests of cassandra clsuter behavior on several failure
scenarios. And i am stuck woith the very 1st test - what happens, if 1 node of
cluster becomes unavailable.
I have 4 4gb nodes loaded with write mostly test. Normally it works at the rate
about 12000 ops/second. Replica
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