There's a tool in the early stages of development here: https://github.com/mifosio/cassandra/tree/develop/src/main/java/io/mifos/core/cassandra/core
That is part of a mass of code which is currently under (slow) discussion to be added to the Apache Fineract project. ALV2 license. I wouldn't be sad if it landed at Cassandra instead. Regards, Myrle Sent from my iPhone > On 8. Sep 2017, at 16:33, Deepak Panda <deepak.pa...@gmail.com> wrote: > > Many Thanks Jeff for the answer and the relevant details. Can you > please share the bug#? > > Are there any opensource tools available for Cassandra which manage > schema changes for Cassandra? > >> On Fri, Sep 8, 2017 at 7:57 PM, Jeff Jirsa <jji...@gmail.com> wrote: >> There is no lock and it doesn't block existing reads or writes >> >> You're already on 3.11, but as a reminder for others there's a bug in 3.0 >> versions between (3.0.0 and 3.0.14) and (3.0 and 3.11.0) that can cause >> corruption when you add columns. It's fixed in both 3.11.0 and 3.0.14, so if >> you need to alter your table and you're on a 3.something version that isn't >> one of those, upgrade first. >> >> -- >> Jeff Jirsa >> >> >>> On Sep 8, 2017, at 7:13 AM, Deepak Panda <deepak.pa...@gmail.com> wrote: >>> >>> Hi, >>> >>> For Cassandra 3.11, when we add a new column is added to an existing >>> table having huge number of rows and huge data manipulation going on >>> will there be any issues? >>> >>> Will the operations blocked till the column is added? >>> >>> Is the table locked during column addition? If yes, what type of lock? >>> >>> --------------------------------------------------------------------- >>> To unsubscribe, e-mail: user-unsubscr...@cassandra.apache.org >>> For additional commands, e-mail: user-h...@cassandra.apache.org >>> >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: user-unsubscr...@cassandra.apache.org >> For additional commands, e-mail: user-h...@cassandra.apache.org >> > > --------------------------------------------------------------------- > To unsubscribe, e-mail: user-unsubscr...@cassandra.apache.org > For additional commands, e-mail: user-h...@cassandra.apache.org >
