Re: Interpreting system.log MeteredFlusher messages

2012-06-27 Thread rohit bhatia
On Wed, Jun 27, 2012 at 2:27 PM, aaron morton wrote: > , but I do not > understand the remedy to the problem. > Is increasing this variable my only option? > > There is nothing to be fixed. This is Cassandra flushing data to disk to > free memory and checkpoint the commit log. yes, but it induces

Re: Interpreting system.log MeteredFlusher messages

2012-06-27 Thread aaron morton
> , but I do not > understand the remedy to the problem. > Is increasing this variable my only option? There is nothing to be fixed. This is Cassandra flushing data to disk to free memory and checkpoint the commit log. > I see memtables of serialized size of 100-200 MB with estimated live > size

Interpreting system.log MeteredFlusher messages

2012-06-25 Thread rohit bhatia
Hi We have 8 cassandra 1.0.5 nodes with 16 cores and 32G ram, Heap size is 12G, memtable_total_space_in_mb is one third = 4G, There are 12 Hot CFs (write-read ratio of 10). memtable_flush_queue_size = 4 and memtable_flush_writers = 2.. I got this log-entry " MeteredFlusher.java (line 74) estimate