My own weak preference would be for a dedicated repo in the first instance. If/when additional tools are contributed we should look at co-locating common stuff, but rushing toward a monorepo would be a mistake IMO.
> On 22 Aug 2019, at 11:10, Jeff Jirsa <jji...@gmail.com> wrote: > > I weakly prefer contrib. > > > On Thu, Aug 22, 2019 at 12:09 PM Marcus Eriksson <marc...@apache.org> wrote: > >> Hi, we are about to open source our tooling for comparing two cassandra >> clusters and want to get some feedback where to push it. I think the >> options are: (name bike-shedding welcome) >> >> 1. create repos/asf/cassandra-diff.git >> 2. create a generic repos/asf/cassandra-contrib.git where we can add more >> contributed tools in the future >> >> Temporary location: https://github.com/krummas/cassandra-diff >> >> Cassandra-diff is a spark job that compares the data in two clusters - it >> pages through all partitions and reads all rows for those partitions in >> both clusters to make sure they are identical. Based on the configuration >> variable “reverse_read_probability” the rows are either read forward or in >> reverse order. >> >> Our main use case for cassandra-diff has been to set up two identical >> clusters, transfer a snapshot from the cluster we want to test to these >> clusters and upgrade one side. When that is done we run this tool to make >> sure that 2.1 and 3.0 gives the same results. A few examples of the bugs we >> have found using this tool: >> >> * CASSANDRA-14823: Legacy sstables with range tombstones spanning multiple >> index blocks create invalid bound sequences on 3.0+ >> * CASSANDRA-14803: Rows that cross index block boundaries can cause >> incomplete reverse reads in some cases >> * CASSANDRA-15178: Skipping illegal legacy cells can break reverse >> iteration of indexed partitions >> >> /Marcus >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: dev-unsubscr...@cassandra.apache.org >> For additional commands, e-mail: dev-h...@cassandra.apache.org >> >> --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@cassandra.apache.org For additional commands, e-mail: dev-h...@cassandra.apache.org
