Re: one big cluster vs multiple smaller clusters

2013-10-13 Thread Wz1975
we have choices of making one big cluster vs a few small clusters. I am trying to get pros and cons for both options in genera.  Thanks. -Wei Sent from my Samsung smartphone on AT&T Original message Subject: Re: one big cluster vs multiple smaller clusters From: Jon Haddad

Re: hinted handoff disabling trade-offs

2013-03-04 Thread Wz1975
Why do you think disabling hinted handoff will improve memory usage?  Thanks. -Wei Sent from my Samsung smartphone on AT&T Original message Subject: Re: hinted handoff disabling trade-offs From: Michael Kjellman To: "user@cassandra.apache.org" CC: Repair is slow. On M

RE: Running Cassandra 1.1, how can I see the efficiency of the key cache?

2012-12-22 Thread Wz1975
Jmx has cache hit rate.  Thanks. -Wei Sent from my Samsung smartphone on AT&Tnull

RE: CQL3 Compound Primary Keys - Do I have the right idea?

2012-12-22 Thread Wz1975
You still add one row. The  column name is the remaining part of the composite key (repeat for each column) plus each of the column which is not in the composite key. I found it is much clearer to look at the data through Cassandra -cli which shows you how data is stored.  Thanks. -Wei Sent f

Re: need some help with row cache

2012-11-27 Thread Wz1975
Use cassandracli. Thanks. -Wei Sent from my Samsung smartphone on AT&T Original message Subject: Re: need some help with row cache From: Yiming Sun To: user@cassandra.apache.org CC: Also, what command can I used to see the "caching" setting?  "DESC TABLE " doesn't list

RE: Admin for cassandra?

2012-11-15 Thread Wz1975
Cqlsh is probably the closest you will get. Or pay big bucks to hire someone to develop one for you:) Thanks. -Wei Sent from my Samsung smartphone on AT&T Original message Subject: Admin for cassandra? From: Kevin Burton To: user@cassandra.apache.org CC: Is there an ID

Re: unable to read saved rowcache from disk

2012-11-14 Thread Wz1975
nged.  On Thu, Nov 15, 2012 at 2:40 PM, Wz1975 wrote: How big is your heap?  Did you change the jvm parameter?  Thanks. -Wei Sent from my Samsung smartphone on AT&T Original message Subject: Re: unable to read saved rowcache from disk From: Manu Zhang

Re: unable to read saved rowcache from disk

2012-11-14 Thread Wz1975
self On Thu, Nov 15, 2012 at 1:51 PM, Wz1975 wrote: Curious where did you see this?  Thanks. -Wei Sent from my Samsung smartphone on AT&T Original message Subject: Re: unable to read saved rowcache from disk From: Manu Zhang To: user@cassandra.apache.org CC:

Re: unable to read saved rowcache from disk

2012-11-14 Thread Wz1975
Curious where did you see this?  Thanks. -Wei Sent from my Samsung smartphone on AT&T Original message Subject: Re: unable to read saved rowcache from disk From: Manu Zhang To: user@cassandra.apache.org CC: OOM at deserializing 747321th row On Thu, Nov 15, 2012 at 9:0

Re: Read during digest mismatch

2012-11-13 Thread Wz1975
From my understanding,  if CL = 2, one read,  one digest are sent.  Only if it is    read repair,  digest is sent to all replicates. Thanks. -Wei Sent from my Samsung smartphone on AT&T Original message Subject: Re: Read during digest mismatch From: Edward Capriolo To: "us

RE: Connecting to cassandra.

2012-11-11 Thread Wz1975
# Ex: ",,"   - seeds: "172.16.35.108"   What should I put? Do you think this is the problem why it is not starting up?     From: Wz1975 [mailto:wz1...@yahoo.com] Sent: Saturday, November 10, 2012 9:07 PM To: user@cassandra.apache.org Subject: RE: Connecting to cassa

RE: Connecting to cassandra.

2012-11-10 Thread Wz1975
The first thing to check is the log files under /var/log/cassandra,  should give you some hint.  Thanks. -Wei Sent from my Samsung smartphone on AT&T Original message Subject: Connecting to cassandra. From: Kevin Burton To: user@cassandra.apache.org CC: I have installe