Apart from datastax java client driver, does Apache Cassandra provide its own
java client driver? Or should be using the datastax one?
If yes, then could anyone give me the link?
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I've seen some discussions about the topic on the list recently, but I
would like to get more clear answers.
Given the table:
CREATE TABLE t1 (
f1 text,
f2 text,
f3 text,
PRIMARY KEY(f1, f2)
);
and assuming I will execute UPDATE of f3 multiple times (say, 1000)
I have questions regarding function and limitations of configurability of the
property storage_port.
Function: What protocols and functions is storage_port used for? Am I right to
believe that it is used for Gossip?
And more importantly: It seems to me that storage_port MUST be configured to
Thanks a lot.
On 14 May 2015, at 22:45 , Nate McCall
n...@thelastpickle.commailto:n...@thelastpickle.com wrote:
You can make LCS more aggressive with tombstone-only compactions via seting
unchecked_tombstone_compaction=true and turn down tombstone_threshold to 0.05
(maybe going up or down as
I started using the datastax driver (coming from astynax driver)
recently. It is awesome! Use it :D
https://github.com/datastax/java-driver
Cheers,
artur
On 15/05/15 10:32, Rohit Naik wrote:
DISCLAIMER == This e-mail may contain privileged an
On Fri, May 15, 2015 at 4:17 AM, Magnus Vojbacke
magnus.vojba...@digitalroute.com wrote:
Function: What protocols and functions is storage_port used for? Am I
right to believe that it is used for Gossip?
It's used for all internode communication (gossip, requests, etc).
And more
Hello,I'm playing with DataStax's ODBC connector for Cassandra and have noticed
something...well...broken.
If I have a keyspace with tables that don't have a UDT column (even though the
UDT is created), things work fine. However, the moment I add a table that has a
UDT column, nothing works.
On Fri, May 15, 2015 at 4:17 AM, Magnus Vojbacke
magnus.vojba...@digitalroute.com wrote:
Why would I want to configure different storage_ports? Function test
environment with multiple nodes on the same hostname.
You can still do this via multiple loopback addresses. If you have access
to
Yes Robert, I already cleared the snapshots. After that, the used disk
space is:
10.x.x.b@$ df -h /mnt/cassandra
Filesystem Size Used Avail Use% Mounted on
/dev/xvdb1 745G 174G 572G 24% /mnt/cassandra
But, the cluster shows me a different thing:
$ nodetool status
Datacenter:
In addition, do I also have to upgrade to Java 7u60+ on C* servers as well.
Yes -- we observed C* nodes locking up when running under older
versions of the JDK.
Jim Witschey
Software Engineer in Test | jim.witsc...@datastax.com
This post has some good advice for preparing for the leap second:
http://www.datastax.com/dev/blog/preparing-for-the-leap-second
On Fri, May 15, 2015 at 12:25 PM, cass savy casss...@gmail.com wrote:
Just curious to know on how you are preparing Prod C* clusters for leap
sec.
What are the
I William file a jira for that, thanks
On May 12, 2015 10:15 PM, Jack Krupansky jack.krupan...@gmail.com wrote:
Sounds like it's worth a Jira - Cassandra should protect itself from
innocent mistakes or excessive requests from clients. Maybe there should be
a timeout or result size (bytes in
This post has some good advice for preparing for the leap second:
http://www.datastax.com/dev/blog/preparing-for-the-leap-second
Post author here. Let me know if you have any questions about it.
What are the workaorund other than upgrading kernel to 3.4+?
A couple NTP-based workarounds are
The Replication Factor = 2. The RP is the default, but not sure how to
check it.
I am attaching the output of: nodetool ring
Thanks a lot!
On Fri, May 15, 2015 at 4:17 PM, Kiran mk coolkiran2...@gmail.com wrote:
run cleanup on all the nodes and wait till it completes.
On May 15, 2015 10:47
I have run plenty of 1.2.x Cassandra versions on the Oracle JVM 1.7. I have
used both 1.7.0_40 and 1.7.0_72 with no issues. Also have 3.2.7 DSE running on
1.7.0_72 in PR with no issues.
Sean Durity – Cassandra Admin, Big Data Team
To engage the team, create a
Thanks Kiran for answering!
I already ran cleanup on just one node. At this moment, I am running on
the second one, but it did not finish there.
On Fri, May 15, 2015 at 3:37 PM, Kiran mk coolkiran2...@gmail.com wrote:
Did you try running nodetool cleanup on all the nodes ?
On May 15, 2015
What is the data distribution status across nodes ? What is the RP ?
On May 16, 2015 12:30 AM, Analia Lorenzatto analialorenza...@gmail.com
wrote:
Thanks Kiran for answering!
I already ran cleanup on just one node. At this moment, I am running on
the second one, but it did not finish there.
What is the Replication Factor ? What does ring status saying ?
On May 16, 2015 12:32 AM, Kiran mk coolkiran2...@gmail.com wrote:
What is the data distribution status across nodes ? What is the RP ?
On May 16, 2015 12:30 AM, Analia Lorenzatto analialorenza...@gmail.com
wrote:
Thanks Kiran
The cluster is comprised of 3 nodes, with a RP=2:
# nodetool status Datacenter: us-east
===
Status=Up/Down
|/ State=Normal/Leaving/Joining/Moving
-- Address Load Tokens Owns (effective) Host ID
Rack
UN 10.x.x.a 420.05 GB 256 66.7%
Did you try running nodetool cleanup on all the nodes ?
On May 15, 2015 10:47 PM, Analia Lorenzatto analialorenza...@gmail.com
wrote:
Hello guys,
I have a cassandra cluster = 2.1.0-2 comprised of 3 nodes. I successfully
added the third node last week. After that, I ran nodetool cleanup on
On Fri, May 15, 2015 at 12:02 PM, Ajay ajay.ga...@gmail.com wrote:
But I am also not sure of what happens when a cached prepared statement is
executed after cassandra nodes restart. Does the server prepared statements
cache is persisted or in memory?.
For now, it's just in memory, so they
run cleanup on all the nodes and wait till it completes.
On May 15, 2015 10:47 PM, Analia Lorenzatto analialorenza...@gmail.com
wrote:
Hello guys,
I have a cassandra cluster = 2.1.0-2 comprised of 3 nodes. I successfully
added the third node last week. After that, I ran nodetool cleanup on
Hi Joseph,
Java driver currently caches the prepared statements but using a weak
reference i.e the cache will hold it as long the client code uses it. So in
turn means that we need to cache the same.
But I am also not sure of what happens when a cached prepared statement is
executed after
Hello guys,
I have a cassandra cluster = 2.1.0-2 comprised of 3 nodes. I successfully
added the third node last week. After that, I ran nodetool cleanup on one
of the other two nodes, and it finished well but it increased the used disk
space.
Before running the clean up the node was 197 GB of
Has anybody run DSE 3.2.6(C*1.2.16) on JRE 1.7. I know its recommended that
we have to get to JVM version 7 to get to C*2.0 and higher.
We are experiencing latency issues during rolling upgrade from 1.2 to 2.0.
Hence cannot get o C*1.2, but plan to just upgrade JRE from 1.6 to 1.7. I
wanted to
Just curious to know on how you are preparing Prod C* clusters for leap sec.
What are the workaorund other than upgrading kernel to 3.4+?
Are you upgrading clusters to Java 7 or higher on client and C* servers?
Are you suggesting the JDK 7 for client/driver and c* side as well. We use
Java driver 2.1.4 and plan to goto JDK7u80 on application end. In addition,
do I also have to upgrade to Java 7u60+ on C* servers as well.
On Fri, May 15, 2015 at 1:06 PM, Jim Witschey jim.witsc...@datastax.com
wrote:
Have you cleared snapshots?
On May 15, 2015, at 2:24 PM, Analia Lorenzatto
analialorenza...@gmail.commailto:analialorenza...@gmail.com wrote:
The Replication Factor = 2. The RP is the default, but not sure how to check
it.
I am attaching the output of: nodetool ring
Thanks a lot!
On Fri,
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