Fwd: INFO LOGS NOT written to System.log (Intermittently)

2015-05-24 Thread Parth Setya
-- Forwarded message -- From: Parth Setya Date: Fri, May 22, 2015 at 5:14 PM Subject: INFO LOGS NOT written to System.log (Intermittently) To: user@cassandra.apache.org Hi I have a *3 node *cluster. Logging Level: *INFO* We observed that for there is nothing written to the syst

RE: Periodic Anti-Entropy repair

2015-05-24 Thread Tiwari, Tarun
We have encountered issues of very long running nodetool repair when we ran it node by node on really large dataset. It even kept on running for a week in some cases. IMO the strategy you are choosing of repairing nodes by –st and –et is good one and does the same work in small increments logs o

Re: Leveled Compaction Strategy with a really intensive delete workload

2015-05-24 Thread Manoj Khangaonkar
Hi, For a delete intensive workload ( translate to write intensive), is there any reason to use leveled compaction ? The recommendation seems to be that leveled compaction is suited for read intensive workloads. Depending on your use case, you might better of with data tiered or size tiered strat

Re: Multiple cassandra instances per physical node

2015-05-24 Thread Jonathan Haddad
What impact would vnodes have on strong consistency? I think the problem you're describing exists with or without them. On Sat, May 23, 2015 at 2:30 PM Nate McCall wrote: > >> So my question is: suppose I take a 12 disk JBOD and run 2 Cassandra >> nodes (each with 5 data disks, 1 commit log dis

Leveled Compaction Strategy with a really intensive delete workload

2015-05-24 Thread Stefano Ortolani
Hi all, I have a question re leveled compaction strategy that has been bugging me quite a lot lately. Based on what I understood, a compaction takes place when the SSTable gets to a specific size (10 times the size of its previous generation). My question is about an edge case where, due to a real

Re: Periodic Anti-Entropy repair

2015-05-24 Thread Anuj Wadehra
You should use nodetool repair -pr on every node to make sure that each range is repaired only once. Thanks Anuj Wadehra Sent from Yahoo Mail on Android From:"Brice Argenson" Date:Sat, 23 May, 2015 at 12:31 am Subject:Periodic Anti-Entropy repair Hi everyone, We are currently migrating f