Server kernal Parameters for cassandra

Hello, Do we have any standard values for server kernel parameters to run Cassandra. Please share some insight. Thanks, - To unsubscribe, e-mail: user-unsubscr...@cassandra.apache.org For additional commands, e-mail:

Cassandra caches

Hi All, I had allocated 2 GB each for Key, Row, Counter & Chunk cache and performed below steps. Please note it is test box not others users are connected to it. Output 1 shows 0 hits and 0 requests - After clean startup of cassandra Output 2 shows 0 hits and 1 requests - Executed a select

Re: Switching Snitch

Hi Pradeep, For changing the snitch you have decommission and add the node with new switch and updated properties files. Thanks, > On Aug 26, 2018, at 2:15 PM, Joshua Galbraith > wrote: > > Pradeep, > > Here are some related tickets that may also be helpful in understanding the >

Re: Cassandra Repair

e seconds. > > So if you have a GC of 10 days, you want to complete your repairs in 9 days… > > > > -- > Rahul Singh > rahul.si...@anant.us > > Anant Corporation > On Jul 16, 2018, 5:15 PM -0400, rajasekhar kommineni , > wrote: >> Hello All, >>

Cassandra Repair

Hello All, I have all cluster nodes in Cloud, and there is very rare chance for nodes going down. I want to prepare repair strategy to my cluster, so need inputs on any calculations to decide when to go for repair. Also let me know if my statement is correct or not "It’s not only node down

Stress Test

Hello Folks, Does any body refer good documentation on Cassandra stress test. I have below questions. 1) Which server is good to start the test, Cassandra server or Application server. 2) I am using Datastax Java driver, is any good documentation for stress test specific to this driver. 3)

Re: Installation

ucture in cloud so opted for adding new dc with tar.gz >> then removed the old dc with package installation >> >> Sent from my iPhone >> >>> On Jul 9, 2018, at 2:23 PM, rajasekhar kommineni >>> wrote: >>> >>> Hello All, >>>

Re: Installation

ote: > > On 07/10/2018 02:48 AM, rajasekhar kommineni wrote: >> Hi Rahul, >> >> The problem for removing the old links is Cassandra binaries are pointed >> from /usr//bin/, /usr//sbin etc .. >> >> $ which nodetool >> /usr/bin/nodetool >> $ which

Best approach for node decommission

Hi All, Can anybody let me know best approach for decommissiong a node in the cluster. My cluster is using vnodes, is there any way to verify all the data of the decommissioning node has been moved to remaining nodes, before completely shutting down the server. I followed below procedure :

Installation

Hello All, I have a cassandra cluster where package installation is done, I want to convert it to tar.gz installation. Is there any procedure to follow. Thanks, Rajasekhar Kommineni - To unsubscribe, e-mail: user-unsubscr

Re: Data copy problem

Just wanted to let you know running the command from all the nodes matched the count of records on both clusters One more question, can any body know how to import the data in different keyspace using sstableloader Thanks, > On Sep 26, 2018, at 3:56 PM, rajasekhar kommineni wrote: >

Mview in cassandra

Hi, I am seeing below warning message in system.log after datacopy using sstabloader. WARN [CompactionExecutor:972] 2018-10-15 22:20:39,308 ViewBuilder.java:189 - Materialized View failed to complete, sleeping 5 minutes before restarting org.apache.cassandra.exceptions.UnavailableException:

Re: Compaction Strategy

17, 2018, at 9:38 PM, rajasekhar kommineni wrote: > > Hello Folks, > > I need advice in deciding the compaction strategy for my C cluster. There are > multiple jobs that will load the data with less inserts and more updates but > no deletes. Currently I am using Size Tired c

Re: Compaction Strategy

taff training, to assist in resolving complaints and to improve our customer service, email communications may be monitored and telephone calls may be recorded. rajasekhar kommineni <rajaco...@gmail.com> 09/19/2018 04:44 PM Please respond to user@cassandra.apache.org To user@cassandr

Re: Data copy problem

; exported file. > > Best Regards, > Kiran.M.K > > > On Thu, 27 Sep 2018 at 4:05 AM, rajasekhar kommineni <mailto:rajaco...@gmail.com>> wrote: > Hi All, > > I have a requirement to copy table data from cluster to another cluster, I > used both sstable

Data copy problem

Hi All, I have a requirement to copy table data from cluster to another cluster, I used both sstableloader and copy snapshot, run nodetool refresh command. In both cases the count of records in new cluster is less than original cluster. I used select count(*) table name to count the records.

Adding new Datacenter

Hello everyone, I am adding new DC to my existing cluster, with application using consistency of ONE. Will the new node of new DC participates in serving the requests during the bootstrapping/ rebuild ? I tested the scenario of building lost seed node with nodetool rebuild , where the binary

Long GC Pauses

Hi All, My C cluster configuration. 1) 2 DC with 4 nodes each and Replication Factor of 3 per each DC 2) Writes(Bulk data load) are done to 2nd DC and Application (reads) are done from 1st DC. 3) CMS GC Issue : Observing long GC pauses during data load and timeouts from application (reads)

Compaction Strategy

Hello Folks, I need advice in deciding the compaction strategy for my C cluster. There are multiple jobs that will load the data with less inserts and more updates but no deletes. Currently I am using Size Tired compaction, but seeing auto compactions after the data load kicks, and also read

Driver Debug trace log

Hi All, We are seeing some timeouts for Web calls which are going to remote DC, so enabled debug tracing for DataStax java driver and getting below messages in the application log file.However not able to get the exact reason for the timeout. Need assistance in finding the same. DataStax