TR: How to connect a Cassandra database to Microsoft Power BI ?

Okay thank you, Can you send me a link to download the spark-cassandra connector ? My power BI software dates june 2017. Thank you very much. Emeric. De : Justin Cameron [mailto:jus...@instaclustr.com] Envoyé : mercredi 18 juillet 2018 09:35 À : user@cassandra.apache.org

TR: How to connect a Cassandra database to Microsoft Power BI ?

Okay thank you, Do have I to use a Spark database on my computer to connect Cassandra to Power BI ? Or do I just need to install the connector ? Can you send me a link to download the spark-cassandra connector ? My power BI software dates june 2017. Thank you very much. Emeric. De : Justin Came

Re: concurrent_compactors via JMX

Ah excuse my confusion. I now understand I guide you through changing the throughput when you wanted to change the compaction throughput. I also found some commands I ran in the past using jmxterm. As mentioned by Chris - and thanks Chris for answering the question properly -, the 'max' can never

Re: apache cassandra development process and future

Jeff and Rahul thank you very much for clarification. My main concern was the fact that since DataStax left Cassandra project it is unclear if the development speed will significantly slow down, even now it seems documentation site seems abandoned. Though players like Netflix, Apple and Microsoft l

Re: apache cassandra development process and future

It will (did) slow, but it didn’t (won’t) stop. There’s some really interesting work in the queue, like https://issues.apache.org/jira/plugins/servlet/mobile#issue/CASSANDRA-14404 , that should make a lot of users very happy. -- Jeff Jirsa > On Jul 19, 2018, at 6:59 AM, Vitaliy Semochkin w

Why and How is Cassandra using all my ram ?

Hello list ! I have a question about cassandra memory usage. My cassandra nodes are slowly using up all my ram until they get OOM-Killed. When I check the memory usage with nodetool info the memory (off-heap+heap) doesn't match what the java process is really using. I tried to use pmap to see w

TR: How to connect a Cassandra database to Microsoft Power BI ?

Okay thank you, Must I use a Spark database on my computer to connect Cassandra to Power BI ? Or do I just need to install the connector ? Can you send me a link to download the spark-cassandra connector ? My power BI software dates june 2017. Thank you very much. Emeric. De : Justin Cameron [m

Re: How to connect a Cassandra database to Microsoft Power BI ?

Hi VAN! I already had to go through that, I recommend you follow these links. https://docs.microsoft.com/en-us/power-bi/desktop-connect-using-generic-interfaces https://www.datastax.com/dev/blog/using-the-datastax-odbc-driver-for-apache-cassandra The important thing is to have the ODBC to conne

Re: Timeout for only one keyspace in cluster

Our foreignid is unique idetifier and we did check for wide partitions; cfhistorgrams show all partitions are evenly sized: Percentile  SSTables     Write Latency      Read Latency    Partition Size        Cell Count                               (micros)          (micros)           (bytes)  

Re: concurrent_compactors via JMX

> Ah excuse my confusion. I now understand I guide you through changing the > throughput when you wanted to change the compaction throughput. Wow, I meant to say "I guided you through changing the compaction throughput when you wanted to change the number of concurrent compactors." I should not

Incremental Backup Hardlinks

Hello Cassandra Experts and Committers, Hopefully this is just a dumb question, but without the skill set to read the source code, I must ask. Consider incremental backups are enabled on 2.x or 3.x. As memtables flush to sstables on disk, hardlinks are created in backups for the column family.

Re: concurrent_compactors via JMX

Alain, I really appreciate your answers! A little typo is not changing the valuable content! For sure I will give a shot to your GC settings and come back with my findings. Right now I have 6 nodes up and running and everything looks good so far (at least much better). I agree, the hardware I am

Re: Incremental Backup Hardlinks

The hard links are created after the SSTables have finished writing. On Thu, Jul 19, 2018 at 9:51 AM David Payne wrote: > Hello Cassandra Experts and Committers, > > > > Hopefully this is just a dumb question, but without the skill set to read > the source code, I must ask. > > > > Consider in