Sorry, misprint
//composeQuery() = INSERT INTO packets (id, fingerprint, mark) VALUES (?,
?, ?);
PreparedStatement preparedStatement = session.prepare(composeQuery());
//exception happens here!
2015-06-24 11:20 GMT+02:00 Serega Sheypak serega.shey...@gmail.com:
Hi, I'm trying to use bounded
No, I did not.
On 24 Jun 2015, at 06:05, Jason Wee
peich...@gmail.commailto:peich...@gmail.com wrote:
on the node 192.168.2.100, did you run repair after its status is UN?
On Wed, Jun 24, 2015 at 2:46 AM, Jean Tremblay
IMO, the main concern of C*'s counter is, it is not idempotent. For
example, if you add a counter and get a timeout error, you can not know
whether it is successful. For non-counter writes, they are idempotent so
you can just retry, but if you retry in counter, there may be a double
write.
Hello all,
We are running c* version 2.0.15. We have 5 nodes with RF=3. We are using
DTCS and on all inserts we have a TTL of 30 days. We have no deletes.We
just have one CF. When i run nodetool repair on a node i notice a lot of
extra sst tables created, this I think is due to the fact that its
Hi, I'm trying to use bounded query and I get weird error:
Here is a query:
Bounded query: INSERT INTO packets (id, fingerprint, mark) VALUES (?, ?, ?);
Here is a code:
PreparedStatement preparedStatement = session.prepare(composeQuery());
//composeQuery returns INSERT INTO packets (id,
any ideas or advises?
On Mon, Jun 22, 2015 at 10:55 AM, Arun Chaitanya chaitan64a...@gmail.com
wrote:
Hello All,
Now we settled on the following approach. I want to know if there are any
problems that you foresee in the production environment.
Our Approach: Use Off Heap Memory
omg!!!
It was some weird unprinted character. That is why C* driver failed to
parse it
2015-06-24 11:35 GMT+02:00 Serega Sheypak serega.shey...@gmail.com:
Sorry, misprint
//composeQuery() = INSERT INTO packets (id, fingerprint, mark) VALUES
(?, ?, ?);
PreparedStatement preparedStatement
This article from Spotify Labs is a really nice write up of migrating SQL
(Postgres in this case) to Cassandra
Carlos Alonso | Software Engineer | @calonso https://twitter.com/calonso
On 23 June 2015 at 20:23, Alex Popescu al...@datastax.com wrote:
On Tue, Jun 23, 2015 at 12:13 PM, Marcos
This is no longer an issue in 2.1.
https://issues.apache.org/jira/browse/CASSANDRA-2434
We now make sure the replica we bootstrap from is the one that will no
longer own that range
On Wed, Jun 24, 2015 at 4:58 PM, Alain RODRIGUEZ arodr...@gmail.com wrote:
It looks to me that can indeed happen
It looks to me that can indeed happen theoretically (I might be wrong).
However,
- Hinted Handoff tends to remove this issue, if this is big worry, you
might want to make sure HH are enabled and well tuned
- Read Repairs (synchronous or not) might have mitigate things also, if you
read fresh
I guess it is this one, enjoy it:
https://labs.spotify.com/2015/06/23/user-database-switch/ :-)
2015-06-24 22:57 GMT+02:00 Marcos Ortiz mlor...@uci.cu:
Where is the link, Carlos?
On 24/06/15 07:18, Carlos Alonso wrote:
This article from Spotify Labs is a really nice write up of migrating
https://labs.spotify.com/2015/06/23/user-database-switch/
On Wed, Jun 24, 2015 at 5:57 PM, Marcos Ortiz mlor...@uci.cu wrote:
Where is the link, Carlos?
On 24/06/15 07:18, Carlos Alonso wrote:
This article from Spotify Labs is a really nice write up of migrating SQL
(Postgres in this
Where is the link, Carlos?
On 24/06/15 07:18, Carlos Alonso wrote:
This article from Spotify Labs is a really nice write up of migrating
SQL (Postgres in this case) to Cassandra
Carlos Alonso | Software Engineer | @calonso https://twitter.com/calonso
On 23 June 2015 at 20:23, Alex Popescu
By entries, do you mean rows or columns? Please clarify how many columns
each of your tables has, and how many rows you are populating for each
table.
In case I didn't make it clear earlier, limit yourself to low hundreds
(like 250) of tables and you should be fine. Thousands of tables is a clear
Hello.
I'm having some problems with Cassandra driver for Java.
Here is a simple Scala project:
https://github.com/afiskon/scala-cassandra-example
When I run it I get following output:
http://paste.ubuntu.com/11767987/
As I understand this piece of code:
```
private val id = id
private val
Hi,
we recently experimented read performance on both versions and found read
is slower in 2.1.6. Here is our setup:
1. Machines: 3 physical hosts. Each node has 24 cores CPU, 256G memory and
8x600GB SAS disks with raid 1.
2. Replica is 3 and a billion rows of data is inserted.
3. Key cache
Ok, I discovered that passing Statement instead of string to
executeAsync method solves a problem:
https://github.com/afiskon/scala-cassandra-example/commit/4f3f30597a4df340f739e4ec53ec9ee3d87da495
Still, according to documentation for getQueryString method described
problem should be considered
ERROR [OptionalTasks:1] 2015-06-25 08:56:19,156 CassandraDaemon.java:223 -
Exception in thread Thread[OptionalTasks:1,5,main]
java.lang.AssertionError: -110036444293069784 not found in
--
Ranger Tsao
Hi Jack,
When I mean entries, I meant rows. Each column family has about 200 columns.
Disabling of slab allocation is an expert-only feature - its use is
generally an anti-pattern, not recommended.
I understand this and have seen this recommendation at several places. I
want to understand the
I would say that it's mostly a performance issue, tied to memory
management, but the main problem is that a large number of tables invites a
whole host of clluster management difficulties that require... expert
attention, which then means you need an expert to maintain and enhance it.
Cassandra
Hi,
We faced a scenario where we lost little data after adding 2 nodes in the
cluster. There were intermittent dropped mutations in the cluster. Need to
verify my understanding how this may have happened to do Root Cause Analysis:
Scenario: 3 nodes, RF=3, Read / Write CL= Quorum
1. Due to
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