Re: Multi-DC replication and hinted handoff

2019-04-09 Thread Jens Fischer
Hi, an update: I am pretty sure it is a problem with insufficient bandwidth. I can’t be sure because Cassandra does not seem to provide debug information on hint creation (only when replaying hints). When the bandwidth issue is solved I will try to reproduce the accumulation of hints by artific

Re: Multi-DC replication and hinted handoff

2019-04-02 Thread Stefan Miklosovic
Hi Jens, I am reading Cassandra The definitive guide and there is a chapter 9 - Reading and Writing Data and section The Cassandra Write Path and this sentence in it: If a replica does not respond within the timeout, it is presumed to be down and a hint is stored for the write. So your node migh

Re: Multi-DC replication and hinted handoff

2019-04-02 Thread Jens Fischer
Yes, Apache Cassandra 3.11.2 (no DSE). On 2. Apr 2019, at 19:40, sankalp kohli mailto:kohlisank...@gmail.com>> wrote: Are you using OSS C*? On Fri, Mar 29, 2019 at 1:49 AM Jens Fischer mailto:j.fisc...@sonnen.de>> wrote: Hi, I have a Cassandra setup with multiple data centres. The vast majori

Re: Multi-DC replication and hinted handoff

2019-04-02 Thread sankalp kohli
Are you using OSS C*? On Fri, Mar 29, 2019 at 1:49 AM Jens Fischer wrote: > Hi, > > I have a Cassandra setup with multiple data centres. The vast majority of > writes are LOCAL_ONE writes to data center DC-A. One node (lets call this > node A1) in DC-A has accumulated large amounts of hint files