Re: AWS I3.XLARGE retiring instances advices

2020-02-14 Thread Erick Ramirez
> > Erick, a question purely as a point of curiosity. The entire model of a > commit log, historically (speaking in RDBS terms), depended on a notion of > stable store. The idea being that if your data volume lost recent writes, > the failure mode there would be independent of writes to the

Re: Corruption of frozen UDT during upgrade

2020-02-14 Thread Erick Ramirez
> > I am still having problems reproducing this, so I am wondering if I have > created the tables correctly to create this issue. Paul, I've since had clarification on the bug and I hope I can explain it correctly here (happy to be corrected if anyone else has insight on the issue). When you

[RELEASE] Apache Cassandra 3.11.6 released

2020-02-14 Thread Michael Shuler
The Cassandra team is pleased to announce the release of Apache Cassandra version 3.11.6. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without compromising performance. http://cassandra.apache.org/ Downloads of

[RELEASE] Apache Cassandra 3.0.20 released

2020-02-14 Thread Michael Shuler
The Cassandra team is pleased to announce the release of Apache Cassandra version 3.0.20. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without compromising performance. http://cassandra.apache.org/ Downloads of

[RELEASE] Apache Cassandra 2.2.16 released

2020-02-14 Thread Michael Shuler
The Cassandra team is pleased to announce the release of Apache Cassandra version 2.2.16. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without compromising performance. http://cassandra.apache.org/ Downloads of

Re: Corruption of frozen UDT during upgrade

2020-02-14 Thread Andrew Prudhomme
What does http://cassandra.apache.org/doc/latest/tools/sstable/sstablemetadata.html show as the type in the upgraded table? Also, the ticket mentions serialization ordering being incorrect between single and multi-cell column data. Perhaps there needs to be other non-PK fields to trigger this

Re: AWS I3.XLARGE retiring instances advices

2020-02-14 Thread Reid Pinchback
I was curious and did some digging. 400k is the max read IOPs on the 1-device instance types, 3M IOPS is for the 8-device instance types. From: Reid Pinchback Reply-To: "user@cassandra.apache.org" Date: Friday, February 14, 2020 at 11:24 AM To: "user@cassandra.apache.org" Subject: Re: AWS

Re: AWS I3.XLARGE retiring instances advices

2020-02-14 Thread Reid Pinchback
I’ve seen claims of 3M IOPS on reads for AWS, not sure about writes. I think you just need a recent enough kernel to not get in the way of doing multiqueue operations against the NVMe device. Erick, a question purely as a point of curiosity. The entire model of a commit log, historically

Re: Corrupt SSTable Cassandra 3.11.2

2020-02-14 Thread Jeff Jirsa
The risk is you violate consistency while you run repair Assume you have three replicas for that range, a b c At some point b misses a write, but it’s committed on a and c for quorum Now c has a corrupt sstable You empty c and bring it back with no data and start repair Then the app reads at

Re: Corruption of frozen UDT during upgrade

2020-02-14 Thread Paul Chandler
Erick, Thank you for your help. I am still having problems reproducing this, so I am wondering if I have created the tables correctly to create this issue. I have looked at the sstabledumps and they seem exactly the same. This is the pre upgrade version 3.0.14 ( a snapshotted version )