Re: Full GC in cassandra

2014-07-28 Thread graham sanderson
ook like? > > From: Ruchir Jha > Reply-To: "user@cassandra.apache.org" > Date: Monday, July 28, 2014 at 10:43 AM > To: "user@cassandra.apache.org" > Subject: Re: Full GC in cassandra > > Also we do subsequent updates (atleat 4) for each piece of data th

Re: Full GC in cassandra

2014-07-28 Thread Keith Wright
<mailto:user@cassandra.apache.org>" mailto:user@cassandra.apache.org>> Subject: Re: Full GC in cassandra Also we do subsequent updates (atleat 4) for each piece of data that we write. On Mon, Jul 28, 2014 at 10:36 AM, Ruchir Jha mailto:ruchir@gmail.com>> wrote: Doing

Re: Full GC in cassandra

2014-07-28 Thread Ruchir Jha
Also we do subsequent updates (atleat 4) for each piece of data that we write. On Mon, Jul 28, 2014 at 10:36 AM, Ruchir Jha wrote: > Doing about 5K writes / second. Avg Data Size = 1.6 TB / node. Total Data > Size = 21 TB. > > And this is the nodetool cfstats output for one of our busiest colum

Re: Full GC in cassandra

2014-07-28 Thread Ruchir Jha
Doing about 5K writes / second. Avg Data Size = 1.6 TB / node. Total Data Size = 21 TB. And this is the nodetool cfstats output for one of our busiest column families: SSTable count: 10 Space used (live): 43239294899 Space used (total): 43239419603

Re: Full GC in cassandra

2014-07-28 Thread Mark Reddy
What is your data size and number of columns in Cassandra. Do you do many deletions? On Mon, Jul 28, 2014 at 2:53 PM, Ruchir Jha wrote: > Really curious to know what's causing the spike in Columns and > DeletedColums below : > > > 2014-07-28T09:30:27.471-0400: 127335.928: [Full GC 127335.928: [

Full GC in cassandra

2014-07-28 Thread Ruchir Jha
Really curious to know what's causing the spike in Columns and DeletedColums below : 2014-07-28T09:30:27.471-0400: 127335.928: [Full GC 127335.928: [Class Histogram: num #instances #bytes class name -- 1: 132626060 6366050880 j