anyway to throttle nodetool repair?

I saw the ticket about compaction throttling, just wonder is that necessary to add an option or is there anyway to do repair throttling? every time I run nodetool repair, it uses all disk io and the server load goes up quickly, just wonder is there anyway to make it smoother.

Re: anyway to throttle nodetool repair?

so how about disk io? is there anyway to use ionice to control it? I have tried to adjust the priority by "ionice -c3 -p [cassandra pid]. seems not working... On Wed, Sep 28, 2011 at 12:02 AM, Peter Schuller < peter.schul...@infidyne.com> wrote: > > I saw the ticket about compaction throttling

Re: anyway to throttle nodetool repair?

I am using commodity hardware so even minor compact make disk io goes 100% and server load get very high On Tue, Oct 11, 2011 at 11:19 AM, Yan Chunlu wrote: > so how about disk io? is there anyway to use ionice to control it? > > I have tried to adjust the priority by "ionice -c3

Re: anyway to throttle nodetool repair?

as I asked earlier: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/how-does-compaction-throughput-kb-per-sec-affect-disk-io-td6831711.html might not directly throttle the disk I/O? it would be easy if ionice could work with cassandra. not sure it is because of jvm or something e

is that possible to add more data structure(key-list) in cassandra?

I think cassandra is doing great job on key-value data store, it saved me tremendous work on maintain the data consistency and service availability. But I think it would be great if it could support more data structures such as key-list, currently I am using key-value save the list, it seems not

Re: is that possible to add more data structure(key-list) in cassandra?

I thought currently no one is maintaining supercolumns related code, and also it not quite efficient. On Fri, Nov 11, 2011 at 2:46 PM, Radim Kolar wrote: > Dne 11.11.2011 5:58, Yan Chunlu napsal(a): > > I think cassandra is doing great job on key-value data store, it saved me >

how to reduce latency?

I have three nodes running cassandra 0.7.4 about two years, as showed below: 10.x.x.x Up Normal 138.07 GB 33.33% 0 10.x.x.x Up Normal 143.97 GB 33.33% 56713727820156410577229101238628035242 10.x.x.x Up Normal 137.33 GB 33.33% 1134274556403128211544

cassandra halt after started minutes later

I have a three node cluster running 1.0.2, today there's a very strange problem that suddenly two of cassandra node(let's say B and C) was costing a lot of cpu, turned out for some reason the "java" binary just dont run I am using OpenJDK1.6.0_18, so I switched to "sun jdk", which works okay.

Re: cassandra halt after started minutes later

essing response on a callback from 50051@/192.168.1.40 DEBUG [Thread-11] 2012-07-01 23:29:42,939 IncomingTcpConnection.java (line 116) Version is now 3 On Sun, Jul 1, 2012 at 11:14 PM, Yan Chunlu wrote: > I have a three node cluster running 1.0.2, today there's a very strange > problem t

Re: cassandra halt after started minutes later

n Linux, try: > > date; date `date +"%m%d%H%M%C%y.%S"`; date; > > In a terminal and see if everything starts working again. > > I hope this helps. > -- > David Daeschler > > > > On Sun, Jul 1, 2012 at 11:33 AM, Yan Chunlu wrote: > > adjust the

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