Re: Backups in Cassandra

2019-08-07 Thread cclive1601你
We have also made backup and restore for Apache Cassandra,backup process are 1.do incremental backup for flushed sstable ;do incremental backup for commitlog ; 2.do snapshot for the cluster periodically,also meta info are needed to backup(token and table info); 3.for exception like node joining

Re: Backups in Cassandra

2019-08-07 Thread Connor Lin
Hi Krish, It is recommended to have backups. Although I haven't practiced it myself, but I find this might be helpful. https://thelastpickle.com/blog/2018/04/03/cassandra-backup-and-restore-aws-ebs.html Sincerely yours, Connor Lin On Thu, Aug 8, 2019 at 5:47 AM Krish Donald wrote: > Hi

Backups in Cassandra

2019-08-07 Thread Krish Donald
Hi Folks, First question is , Do you take backup for your cassandra cluster ? If answer is yes then question follows: 1. How do you take backup ? 1.1 ) Is it only snapshot? 1.2 ) We are on AWS with very large cluster around 51 nodes with 1TB data on each node.

Re: Datafile Corruption

2019-08-07 Thread Nitan Kainth
Repair during upgrade have caused corruption too. Also, dropping and adding columns with same name but different type Regards, Nitan Cell: 510 449 9629 > On Aug 7, 2019, at 2:42 PM, Jeff Jirsa wrote: > > Is compression enabled? > > If not, bit flips on disk can corrupt data files and reads

Re: Datafile Corruption

2019-08-07 Thread Jeff Jirsa
Is compression enabled? If not, bit flips on disk can corrupt data files and reads + repair may send that corruption to other hosts in the cluster > On Aug 7, 2019, at 3:46 AM, Philip Ó Condúin wrote: > > Hi All, > > I am currently experiencing multiple datafile corruptions across most

Re: Datafile Corruption

2019-08-07 Thread Laxmikant Upadhyay
Few for reasons: Sudden Power cut Disk full Issue in casandra version like Cassandra-13752 On Wed, Aug 7, 2019, 4:16 PM Philip Ó Condúin wrote: > Hi All, > > I am currently experiencing multiple datafile corruptions across most > nodes in my cluster, there seems to be no pattern to the

Point in time restore not working when primary key is blob

2019-08-07 Thread Shaurya Gupta
Hi, I'm trying to do a point in time restore using commit logs. It seems to be working fine if I have primary as text but it does not work and just restores all the rows if the primary key is blob (which is default if I create a keyspace using cassandra-stress). Is this a known issue? Thanks --

Datafile Corruption

2019-08-07 Thread Philip Ó Condúin
Hi All, I am currently experiencing multiple datafile corruptions across most nodes in my cluster, there seems to be no pattern to the corruption. I'm starting to think it might be a bug, we're using Cassandra 2.2.13. Without going into detail about the issue I just want to confirm something.