I'm using https://github.com/jsevellec/cassandra-unit and haven't come across any race issues or problems. Cassandra-unit takes care of creating the schema before it runs the tests.
On Sun, Oct 23, 2016 at 6:17 PM, DuyHai Doan <doanduy...@gmail.com> wrote: > Ok I have added -Dcassandra.unsafesystem=true and my tests are broken. > > The reason is that I create some schemas before executing tests. > > When unable unsafesystem, Cassandra does not block for schema flush so you > man run into race conditions where the test start using the created schema > but it has not been fully flushed yet to disk: > > See C* source code here: https://github.com/apache/cassandra/blob/trunk/ > src/java/org/apache/cassandra/schema/SchemaKeyspace.java#L278-L282 > > static void flush() > { > if (!DatabaseDescriptor.isUnsafeSystem()) > ALL.forEach(table -> FBUtilities.waitOnFuture( > getSchemaCFS(table).forceFlush())); > } > > I don't know how it worked out for you but it didn't for me... > > On Wed, Oct 19, 2016 at 9:45 AM, DuyHai Doan <doanduy...@gmail.com> wrote: > >> Ohh didn't know such system property exist, nice idea! >> >> On Wed, Oct 19, 2016 at 9:40 AM, horschi <hors...@gmail.com> wrote: >> >>> Have you tried starting Cassandra with -Dcassandra.unsafesystem=true ? >>> >>> >>> On Wed, Oct 19, 2016 at 9:31 AM, DuyHai Doan <doanduy...@gmail.com> >>> wrote: >>> >>>> As I said, when I bootstrap the server and create some keyspace, >>>> sometimes the schema is not fully initialized and when the test code tried >>>> to insert data, it fails. >>>> >>>> I did not have time to dig into the source code to find the root cause, >>>> maybe it's something really stupid and simple to fix. If you want to >>>> investigate and try out my CassandraDaemon server, I'd be happy to get >>>> feedbacks >>>> >>>> On Wed, Oct 19, 2016 at 9:22 AM, Ali Akhtar <ali.rac...@gmail.com> >>>> wrote: >>>> >>>>> Thanks. I've disabled durable writes but this is still pretty slow >>>>> (about 10 seconds). >>>>> >>>>> What issues did you run into with your impl? >>>>> >>>>> On Wed, Oct 19, 2016 at 12:15 PM, DuyHai Doan <doanduy...@gmail.com> >>>>> wrote: >>>>> >>>>>> There is a lot of pre-flight checks when starting the cassandra >>>>>> server and they took time. >>>>>> >>>>>> For integration testing, I have developped a modified CassandraDeamon >>>>>> here that remove pretty most of those checks: >>>>>> >>>>>> https://github.com/doanduyhai/Achilles/blob/master/achilles- >>>>>> embedded/src/main/java/info/archinnov/achilles/embedded/Achi >>>>>> llesCassandraDaemon.java >>>>>> >>>>>> The problem is that I felt into weird scenarios where creating a >>>>>> keyspace wasn't created in timely manner so I just stop using this impl >>>>>> for >>>>>> the moment, just look at it and do whatever you want. >>>>>> >>>>>> Another idea for testing is to disable durable write to speed up >>>>>> mutation (CREATE KEYSPACE ... WITH durable_write=false) >>>>>> >>>>>> On Wed, Oct 19, 2016 at 3:24 AM, Ali Akhtar <ali.rac...@gmail.com> >>>>>> wrote: >>>>>> >>>>>>> Is there a way to speed up the creation of keyspace + tables during >>>>>>> integration tests? I am using an RF of 1, with SimpleStrategy, but it >>>>>>> still >>>>>>> takes upto 10-15 seconds. >>>>>>> >>>>>> >>>>>> >>>>> >>>> >>> >> >
