Cassandra 1.2.0H startup exception

2013-03-18 Thread 杨辉强
Hi, all: I am a beginner of cassandra. I have a four node cassandra group. One of my cassandra group node had been running for a week. Recently because of too much writing and reading, it crashed. I want to restart the node. While I start up cassandra, it ends up with throwing exceptio

Re: Cassandra 1.2.0H startup exception

2013-03-18 Thread 杨辉强
On 03/19/2013 11:22 AM, 杨辉强 wrote: Hi, all: I am a beginner of cassandra. I have a four node cassandra group. One of my cassandra group node had been running for a week. Recently because of too much writing and reading, it crashed. I want to restart the node. While I start up

Re: Cassandra 1.2.0H startup exception

2013-03-19 Thread 杨辉强
the OderPreservingPartitioner. Cheers - Aaron Morton Freelance Cassandra Consultant New Zealand @aaronmorton http://www.thelastpickle.com On 19/03/2013, at 4:22 PM, 杨辉强 wrote: Hi, all: I am a beginner of cassandra. I have a four node cassandra group. One of my cassandra gr

Continuing high CPU usage (98%) after cassandra1.2.0 startup.

2013-03-19 Thread 杨辉强
Hi, Every time I restart the cassandra server, the cpu usage continue to be very high(98%) for days. But I have no reading or writing to this server. I have tried the follow cmd: date; date `date +"%m%d%H%M%C%y.%S"`; date; It doesn't work. The tail of system.log: DEBUG [Thrift:1701] 2013-0

Re: Continuing high CPU usage (98%) after cassandra1.2.0 startup.

2013-03-20 Thread 杨辉强
On 03/20/2013 11:34 AM, 杨辉强 wrote: Hi, Every time I restart the cassandra server, the cpu usage continue to be very high(98%) for days. But I have no reading or writing to this server. I have tried the follow cmd: date; date `date +"%m%d%H%M%C%y.%S"`; date; It doesn't wor

Re: Cassandra 1.2.0H startup exception

2013-03-20 Thread 杨辉强
nd failing. Have you changed the partitioner ? how long have you been using the OPP ? Cheers - Aaron Morton Freelance Cassandra Consultant New Zealand @aaronmorton http://www.thelastpickle.com On 19/03/2013, at 6:34 PM, 杨辉强 wrote: On 03/19/2013 11:22 AM, 杨辉强 wrote: Hi, all:

Deletion use more space.

2013-07-16 Thread 杨辉强
Hi, all: I use cassandra 1.2.4 and I have 4 nodes ring and use byte order partitioner. I had inserted about 200G data in the ring previous days. Today I write a program to scan the ring and then at the same time delete the items that are scanned. To my surprise, the cassandra cost more di

Re: Deletion use more space.

2013-07-16 Thread 杨辉强
ng data during compaction and - in the end (see: gc_grace_seconds) - removed, but by this time they'll take some space. http://wiki.apache.org/cassandra/DistributedDeletes M. W dniu 16.07.2013 11:46, 杨辉强 pisze: > Hi, all: >I use cassandra 1.2.4 and I have 4 nodes ring and

Re: Deletion use more space.

2013-07-16 Thread 杨辉强
Thank you! It should be "update column family ScheduleInfoCF with gc_grace = 3600;" Faint. - 原始邮件 ----- 发件人: "杨辉强" 收件人: user@cassandra.apache.org 发送时间: 星期二, 2013年 7 月 16日 下午 6:15:12 主题: Re: Deletion use more space. Hi, I use the follow cmd to update gc_grace_secon

Re: Deletion use more space.

2013-07-16 Thread 杨辉强
you need to "delete" it, which creates > tombstones, and then run a repair on that column family within > gc_grace_seconds. After that the data is actually gone and the space > reclaimed. > > > On Tue, Jul 16, 2013 at 6:20 AM, 杨辉强 wrote: > Thank you