Re: Data stax object mapping and lightweight transactions

2015-04-07 Thread Sylvain Lebresne
This is very much a Java Driver question so please try to use the java driver mailing list ( https://groups.google.com/a/lists.datastax.com/forum/#!forum/java-driver-user) for this type of question instead of the general Cassandra mailing list in the future. That said, to answer you question, no,

Cassandra PHP driver

2015-04-07 Thread Amlan Roy
Hi, I am using Cassandra 2.0.13. Which is the recommended PHP driver I can use with this version of Cassandra? Regards, Amlan

Re: How much disk is needed to compact Leveled compaction?

2015-04-07 Thread Jean Tremblay
I am only using LeveledCompactionStrategy, and as I describe in my original mail, I don’t understand why C* is complaining that it cannot compact when I have more than 40% free disk space. On 07 Apr 2015, at 01:10 , Bryan Holladay holla...@longsight.commailto:holla...@longsight.com wrote:

Cassandra vs OS x

2015-04-07 Thread Jean Tremblay
Hi, Why do everyone say that Cassandra should not be used in production on an Mac OS x? Why would this not work? Are there anyone out there using OS x in production? What is your experience with this? Thanks Jean

Re: Cassandra vs OS x

2015-04-07 Thread Ali Akhtar
Cost may be a factor? OS X servers would cost a lot more than Linux servers. On Tue, Apr 7, 2015 at 4:13 PM, Jean Tremblay jean.tremb...@zen-innovations.com wrote: Hi, Why do everyone say that Cassandra should not be used in production on an Mac OS x? Why would this not work? Are there

Re: Cassandra vs OS x

2015-04-07 Thread Serega Sheypak
one more good summary: http://superuser.com/questions/845143/any-limitation-for-having-many-files-in-a-directory-in-mac-os-x 2015-04-07 13:49 GMT+02:00 Serega Sheypak serega.shey...@gmail.com: That is the reason for trying to work with ZFS. Unfortunately, it was dropped. And that is the

Re: Cassandra vs OS x

2015-04-07 Thread Serega Sheypak
It's single-threaded for writing :) 2015-04-07 13:13 GMT+02:00 Jean Tremblay jean.tremb...@zen-innovations.com : Hi, Why do everyone say that Cassandra should not be used in production on an Mac OS x? Why would this not work? Are there anyone out there using OS x in production? What is

Re: Cassandra vs OS x

2015-04-07 Thread Michal Michalski
Out of curiosity - could you elaborate on that or drop a link? Kind regards, Michał Michalski, michal.michal...@boxever.com On 7 April 2015 at 12:41, Serega Sheypak serega.shey...@gmail.com wrote: It's single-threaded for writing :) 2015-04-07 13:13 GMT+02:00 Jean Tremblay

Re: Cassandra vs OS x

2015-04-07 Thread Serega Sheypak
HFS: The Catalog File, which stores all the file and directory records in a single data structure, results in performance problems when the system allows multitasking http://en.wikipedia.org/wiki/Computer_multitasking, as only one program can write to this structure at a time, meaning that many

Re: Cassandra vs OS x

2015-04-07 Thread Serega Sheypak
That is the reason for trying to work with ZFS. Unfortunately, it was dropped. And that is the reason pcie interface for SSD in my MacBook pro. 2015-04-07 13:46 GMT+02:00 Serega Sheypak serega.shey...@gmail.com: HFS: The Catalog File, which stores all the file and directory records in a

Sstables remain after compaction (C* 2.0.13)

2015-04-07 Thread Andrei Ivanov
Hi all, I know, there was a thread with the same topic a while ago. But my problem is that I'm seeing exactly the same behavior with C*2.0.13. I.e. compacted sstables remain there after compaction for a long time (say ~24 hours, never waited longer than that). Those sstables are removed upon

Re: Cassandra PHP driver

2015-04-07 Thread Robert Coli
On Tue, Apr 7, 2015 at 1:18 AM, Amlan Roy amlan@cleartrip.com wrote: I am using Cassandra 2.0.13. Which is the recommended PHP driver I can use with this version of Cassandra? The PHP driver from Datastax was released last week. https://github.com/datastax/php-driver =Rob

Spark SQL Thrift JDBC/ODBC server + Cassandra

2015-04-07 Thread Mohammed Guller
Hi - Is anybody using Cassandra with the Spark SQL Thrift JDBC/ODBC server? I can programmatically (within our app) use Spark SQL with C* using the Spark-Cassandra-Connector, but can't find any documentation on how to query C* through the Spark SQL Thrift JDBC/ODBC server. Would appreciate if

Re: Can cqlsh COPY command be run through

2015-04-07 Thread DuyHai Doan
Short answer is no. Whenever you access the session object of the Java driver directly (using withSessionDo{...}), you bypass the data locality optimisation made by the connector On Sun, Apr 5, 2015 at 9:53 AM, Tiwari, Tarun tarun.tiw...@kronos.com wrote: Hi, I am looking for, if the

Re: DSE 4.6 with OpsCenter 5.1.1, agent can't start, port 9042 is occupied by DSE

2015-04-07 Thread DuyHai Doan
I think the problem is with the IP address. Cassandra does listen on 192.168.56.30 and you agent log complains about not being able to connect to 127.0.0.1. Worth investigating there On Sun, Apr 5, 2015 at 3:47 PM, Serega Sheypak serega.shey...@gmail.com wrote: Hi, getting weird problem when

RE: Can cqlsh COPY command be run through

2015-04-07 Thread Tiwari, Tarun
Thanks. That was kind of a logical guess is was having on it. Thanks for confirming. From: DuyHai Doan [mailto:doanduy...@gmail.com] Sent: Wednesday, April 08, 2015 1:05 AM To: user@cassandra.apache.org Subject: Re: Can cqlsh COPY command be run through Short answer is no. Whenever you

Read Repair in cassandra

2015-04-07 Thread ankit tyagi
Hi All, I have a doubt regarding read repair while reading data. I and using QUORUM for both read and write operations with RF 3 for strong consistency suppose while write data node1 and node2 replicate the data but it doesn't get replicate on node3 because of various factors. coordinator node