Re: tombstones problem with 1.0.8

Hi Victor, Thanks for your response. Is there a possibility that continual deletions during compact could be blocking removal of the tombstones? The full manual compact takes about 4 hours per node for our data, so there is a large number of deletes occurring during that time. This is the descr

Re: Cassandra Exception

Thanks Aaron. when I do describe cluster, always there are "UNREACHABLE", but nodetool ring is fine. it is pretty busy cluster, read 3K/sec $ cassandra-cli -h localhost -u root -pw cassy Connected to: "Production Cluster" on localhost/9160 Welcome to the Cassandra CLI. Type 'help;' or '?' for hel

Re: single row key continues to grow, should I be concerned?

Thanks Aaron, I'll lower the time bucket, see how it goes. Cheers, Alex On Thu, Mar 22, 2012 at 10:07 PM, aaron morton wrote: > Will adding a few tens of wide rows like this every day cause me problems > on the long term? Should I consider lowering the time bucket? > > IMHO yeah, yup, ya and ye

Re: Cassandra - crash with “free() invalid pointer”

Use a version of the Java 6 runtime, Cassandra hasn't been tested at all with the Java 7 runtime. On Thu, Mar 22, 2012 at 1:27 PM, Benoit Perroud wrote: > Sounds like a race condition in the off heap caching while calling > Unsafe.free(). > > Do you use cache ? What is your use case when you enc

Re: single row key continues to grow, should I be concerned?

> Will adding a few tens of wide rows like this every day cause me problems on > the long term? Should I consider lowering the time bucket? IMHO yeah, yup, ya and yes. > From experience I am a bit reluctant to create too many rows because I see > that reading across multiple rows seriously affe

Re: Exceptions related to thrift transport

Can you provide the full error message ? Cheers - Aaron Morton Freelance Developer @aaronmorton http://www.thelastpickle.com On 22/03/2012, at 9:54 PM, Tiwari, Dushyant wrote: > Yes the queries are batch mutate. I can understand this for exception#1 but > not sure what is caus

Re: Cassandra Exception

> java.io.IOError: org.apache.cassandra.db.UnserializableColumnFamilyException: > Couldn't find cfId=-387130991 Schema may have diverged between nodes. use cassandra-cli and run describe cluster; to see how many schema versions you have. Cheers - Aaron Morton Freelance Develop

Re: StackOverflowError during 1.0.8 upgrade

Could you create a bug report here https://issues.apache.org/jira/browse/CASSANDRA and attached the DEBUG level log from the startup to when the error happens. Cheers - Aaron Morton Freelance Developer @aaronmorton http://www.thelastpickle.com On 22/03/2012, at 5:17 AM, Wenjun

How to find CF from cfId

Hi, How to find a column family from a cfId? I got a bunch of exception, want to find out which CF has problem. java.io.IOError: org.apache.cassandra.db.UnserializableColumnFamilyException: Couldn't find cfId=1744830464 at org.apache.cassandra.service.AbstractRowResolver.preprocess(Abstra

Re: Cassandra - crash with “free() invalid pointer”

Sounds like a race condition in the off heap caching while calling Unsafe.free(). Do you use cache ? What is your use case when you encounter this error ? Are you able to reproduce it ? 2012/3/22 Maciej Miklas : > Hi *, > > My Cassandra installation runs on flowing system: > > Linux with Kernel

RE: tombstones problem with 1.0.8

Just tested 1.0.8 before upgrading from 1.0.7: tombstones created by TTL or by delete operation are perfectly deleted after either compaction or cleanup. Have no idea about any other settings than gc_grace_seconds, check you schema from cassandra-cli. Best regards/ Pagarbiai Viktor Jevdo

some tests with Composite (Composite as column names=>OK, as row keys=>KO)

Hi, I have tried few experiments with Composite (first, as columns, and next, as rows). I have followed the paths described by http://www.datastax.com/dev/blog/introduction-to-composite-columns-part-1 My composite is (UTF8, UTF8): (folderId, filename) And I have inserted for all tests, the foll

Re: single row key continues to grow, should I be concerned?

Hi guys, Based on what you are saying there seems to be a tradeoff that developers have to handle between: "keep your rows under a certain size" vs "keep data that's queried together, on disk together" How would you handle this tradeoff in my case: I monitor about

Re: exception when attempting to truncate a table

On 3/21/12 10:47 PM, Viktor Jevdokimov wrote: This is a known issue(s) to be fixed (can’t find exact tickets on the tracker).   Controller, that receives truncate command, checks all nodes up and

Cassandra - crash with “free() invalid pointer”

Hi *, My Cassandra installation runs on flowing system: - Linux with Kernel 2.6.32.22 - jna-3.3.0 - Java 1.7.0-b147 Sometimes we are getting following error: *** glibc detected *** /var/opt/java1.7/bin/java: free(): invalid pointer: 0x7f66088a6000 *** === Backtrace: = /

RE: Exceptions related to thrift transport

Yes the queries are batch mutate. I can understand this for exception#1 but not sure what is causing exception#2 (server side). From: Guy Incognito [mailto:dnd1...@gmail.com] Sent: Thursday, March 22, 2012 1:06 PM To: user@cassandra.apache.org Subject: Re: Exceptions related to thrift transport

Re: Exceptions related to thrift transport

are you perhaps trying to send a large batch mutate? i've seen broken pipes etc in cassandra 0.7 (currently in the process of upgrading to 1.0.8) when a large batch mutate is sent. On 22/03/2012 07:09, Tiwari, Dushyant wrote: Hector version 1.0-3 What is the reason for the second exception,

RE: Exceptions related to thrift transport

Hector version 1.0-3 What is the reason for the second exception, BTW? Thanks, Dushyant From: aaron morton [mailto:aa...@thelastpickle.com] Sent: Wednesday, March 21, 2012 10:46 PM To: user@cassandra.apache.org Subject: Re: Exceptions related to thrift transport 1. org.apache.thrift.TExcep