Re: Can't save Opscenter Dashboard

No they don't. On Wed, Nov 4, 2015 at 3:42 PM, Sebastian Estevez < sebastian.este...@datastax.com> wrote: > Do they come back if you restart opscenterd? > > All the best, > > > [image: datastax_logo.png] > > Sebastián Estévez > > Solutions Architect | 954 905 8615 |

Re: Can't save Opscenter Dashboard

Forgot to mention. I am running OpsCenter 5.2.2. On Wed, Nov 4, 2015 at 3:39 PM, Kai Wang wrote: > Hi, > > Today after one of the nodes is rebooted, OpsCenter dashboard doesn't save > anymore. It starts with an empty dashboard with no widget or graph. If I > add some

Does nodetool cleanup clears tombstones in the CF?

Hi, Quick question, in order for me to purge tombstones on particular nodes if I run nodetool cleanup will that help in purging the tombstones from that node? Thanks.

Re: Doubt regarding consistency-level in Cassandra-2.1.10

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

Re: Can't save Opscenter Dashboard

Do they come back if you restart opscenterd? All the best, [image: datastax_logo.png] Sebastián Estévez Solutions Architect | 954 905 8615 | sebastian.este...@datastax.com [image: linkedin.png] [image: facebook.png]

Re: Can't save Opscenter Dashboard

I am using Firefox. In web console I saw five messages (excluding Net and CSS): The character encoding of the HTML document was not declared. The document will render with garbled text in some browser configurations if the document contains characters from outside the US-ASCII range. The

Can't save Opscenter Dashboard

Hi, Today after one of the nodes is rebooted, OpsCenter dashboard doesn't save anymore. It starts with an empty dashboard with no widget or graph. If I add some graph/widget, they are being updated fine. But if I refresh the browser, the dashboard became empty again. Also there's no "DEFAULT"

Re: Can't save Opscenter Dashboard

Are there any errors in your javascript console? All the best, [image: datastax_logo.png] Sebastián Estévez Solutions Architect | 954 905 8615 | sebastian.este...@datastax.com [image: linkedin.png] [image: facebook.png]

Re: Two node cassandra cluster doubts

I believe what's going on here is this step: Select Count (*) From MYTABLE;---> 15 rows Shut down Node B. Start Up Node B. Select Count (*) From MYTABLE;---> 15 rows To understand why this is an issue, consider the way that consistency is attempted within Cassandra. With RF=2, (You should

Re: Can't save Opscenter Dashboard

Reinstalling OpsCenter didn't fix it. Previously I thought the graphs were updated but actually they were just stalled. I need to refresh and re-add the graph to see the new metrics. Other information such as activities and Nodes are updating fine. On Wed, Nov 4, 2015 at 3:58 PM, Kai Wang

Re: Does datastax java driver works with ipv6 address?

On 11/04/2015 11:17 AM, Dikang Gu wrote: I have ipv6 only cassandra cluster, and I'm trying to connect to it using java driver, like: Inet6Address inet6 = (Inet6Address) InetAddress.getByName("2401:db00:0011:60ed:face::0031:"); cluster =

Re: Can't save Opscenter Dashboard

Finally I got it working. I used to have auth information inside address.yaml. I moved everything except for stomp_interface inside address.yaml to [agent_config] section of cluster_name.conf and restarted opscenterd and datastax-agent on all nodes. That seemed to fix the problem. On Wed, Nov 4,

回复：Can't save Opscenter Dashboard

We have this problem with version 5.2.0. so we decide to update to 5.2.2 But this problem seems remain. We solve this by totally delele relate agent file and process and restart. just like first time install. sudo kill -9 `ps -ef|grep datastax_agent_monitor | head -1 |awk '{print $2}'` \ sudo

Re: Does datastax java driver works with ipv6 address?

Thanks Michael, Actually I find the problem is with the sever setup, I put "rpc_address: 0.0.0.0" in the config, and I find the sever bind to the address like this: tcp0 0 :::9160 :::* LISTEN 2411582/java tcp0 0 :::0.0.0.0:9042 :::*

Question for datastax java Driver

Hi there, Right now, it seems if I add a contact point like this: cluster = Cluster.builder().addContactPoint().build(); When client is connected to the cluster, client will fetch the addresses for all the nodes in the cluster, and try to connect to them. I'm wondering can I disable the

Does datastax java driver works with ipv6 address?

Hi there, I have ipv6 only cassandra cluster, and I'm trying to connect to it using java driver, like: Inet6Address inet6 = (Inet6Address) InetAddress.getByName("2401:db00:0011:60ed:face::0031:"); cluster = Cluster.builder().addContactPointsWithPorts(Arrays.asList(new

Re: Doubt regarding consistency-level in Cassandra-2.1.10

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

Re: compression cpu overhead

To clarify, writes have no *immediate* cpu cost from adding the write to the memtable, however the compression overhead cost is paid when writing out a new SSTable (whether from flushing a memtable or compacting), correct? So it sounds like when reads >> writes then Tushar's comments are