cassanulldra 2.2

I think vast may have changed the release schedule of cassandra. I talk a lot with one of their key developers, and 3.0 was going to drop off heap memtables for several releases due to a rewrite of the storage engine to be more CQL friendly. 2.2 will take all of the improvements in 3.0 but not

Re: Read performance

how many sst tables were there? what compaction are you using ? These properties define how many possible disk reads cassandra has to do to get all the data you need depending on which SST Tables have data for your partition key. On Fri, May 8, 2015 at 6:25 PM, Alprema alpr...@alprema.com

Re: error='Cannot allocate memory' (errno=12)

PFA of error log​ hs_err_pid9656.log https://docs.google.com/a/indiamart.com/file/d/0B0hlSlesIPVfaU9peGwxSXdsZGc/edit?usp=drive_web ​ On Mon, May 11, 2015 at 3:58 PM, Rahul Bhardwaj rahul.bhard...@indiamart.com wrote: free RAM: free -m total used free shared

error='Cannot allocate memory' (errno=12)

Hi All, We have cluster of 3 nodes with 64GB RAM each. My cluster was running in healthy state. Suddenly one machine's cassandra daemon stops working and shut down. On restarting it after 2 minutes it again stops and is getting stop after returning below error in cassandra.log Java HotSpot(TM)

Re: error='Cannot allocate memory' (errno=12)

the memory cassandra is trying to allocate is pretty small. you sure there is no hardware failure on the machine. what is the free ram on the box ? On Mon, May 11, 2015 at 3:28 PM, Rahul Bhardwaj rahul.bhard...@indiamart.com wrote: Hi All, We have cluster of 3 nodes with 64GB RAM each. My

Re: error='Cannot allocate memory' (errno=12)

free RAM: free -m total used free sharedbuffers cached Mem: 64398 23753 40644 0108 8324 -/+ buffers/cache: 15319 49078 Swap: 2925 15 2909 ulimit -a core file size (blocks,

Re: Read performance

According to the trace log, only one was read, the compaction strategy is size tiered. I attached a more readable version of my trace for details. On Mon, May 11, 2015 at 11:35 AM, Anishek Agarwal anis...@gmail.com wrote: how many sst tables were there? what compaction are you using ? These

Re: error='Cannot allocate memory' (errno=12)

Well i havent used 2.1.x cassandra neither java 8 but any reason for not using oracle JDK as i thought thats what is recommended. i saw a thread earlier stating java 8 with 2.0.14+ cassandra is tested but not sure about 2.1.x versions. On Mon, May 11, 2015 at 4:04 PM, Rahul Bhardwaj

Re: error='Cannot allocate memory' (errno=12)

Bu it is giving same error with java 7 and open jdk On Mon, May 11, 2015 at 5:26 PM, Anishek Agarwal anis...@gmail.com wrote: Well i havent used 2.1.x cassandra neither java 8 but any reason for not using oracle JDK as i thought thats what is recommended. i saw a thread earlier stating java 8

Re: error='Cannot allocate memory' (errno=12)

Hi Robert, I saw somewhere you answering the same prob but no solution found. plz check again. regards: Rahul Bhardwaj On Mon, May 11, 2015 at 5:49 PM, Rahul Bhardwaj rahul.bhard...@indiamart.com wrote: Bu it is giving same error with java 7 and open jdk On Mon, May 11, 2015 at 5:26

CQL Data Model question

Hi, I am trying to port an Oracle Table to Cassandra. the table is a wide table (931 columns) and could have millions of rows. name, filter1, filter2filter30, data1, data2...data900 The user would retrieve multiple rows from this table and filter (30 filter columns) by one or more (up to 3)

Re: jvm unstable

On 05/11/2015 12:01 PM, Rahul Bhardwaj wrote: Hi All, I have 3 node cluster, one of node in this cluster is getting due to below error: Java HotSpot(TM) 64-Bit Server VM warning: Attempt to protect stack guard pages failed. Java HotSpot(TM) 64-Bit Server VM warning: INFO:

jvm unstable

Hi All, I have 3 node cluster, one of node in this cluster is getting due to below error: Java HotSpot(TM) 64-Bit Server VM warning: Attempt to protect stack guard pages failed. Java HotSpot(TM) 64-Bit Server VM warning: INFO: os::commit_memory(0x7f14560cd000, 12288, 0) failed;