54 memtable flushes in hour at peaktime

2011-10-09 Thread Tomer B
Hi at highest traffic hours i get 54 memtable flushes, this happens for a few hours during the day and at the rest of hours its ranging from 0 to 10 . Should I be doing anything about it? is that number on critical level? can i live with 54 memtable flushes per hour during peak hours? (I might ex

Re: Knowing when there is a *real* need to add nodes

2011-05-18 Thread Tomer B
heap, JVM GC )? > > maki > > From iPhone > > > On 2011/05/12, at 0:49, Tomer B wrote: > > > Hi > > > > I'm trying to predict when my cluster would soon be needing new nodes > > added, i want a continuous graph telling my of my cluster healt

Knowing when there is a *real* need to add nodes

2011-05-12 Thread Tomer B
Hi I'm trying to predict when my cluster would soon be needing new nodes added, i want a continuous graph telling my of my cluster health so that when i see my cluster becomes more and more busy (I want numbers & measurments) i would be able to know i need to start purchasing more machines and get

losing connection to Cassandra

2011-02-24 Thread Tomer B
Hi i'm using a 3 node cluster of cassandra 0.6.1 together with hector as api to java client. every few days I get a situation where I cannot connect to cassandra, other than that the data dir is filling up the whole disk space and the synchronization stops at these times, the exceptions I get are