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Built in trigger: double-write for app migration - Cassandra - [mail # dev]
...The write sampling is adding an extra instance with the same schema to test things like yaml params or compaction without impacting reads or correctness - it’s different than what you descri...
   Author: Jeff Jirsa , 2018-10-18, 16:27
Using Cassandra as local db without cluster - Cassandra - [mail # dev]
...I can’t think of a situation where I’d choose Cassandra as a database in a single-host use case (if you’re sure it’ll never be more than one machine).-- Jeff Jirsa> On Oct 18, 2018, at 12...
   Author: Jeff Jirsa , 2018-10-18, 10:46
Released an ACID-compliant transaction library on top of Cassandra - Cassandra - [mail # user]
...This is great!-- Jeff Jirsa> On Oct 16, 2018, at 5:47 PM, Hiroyuki Yamada  wrote:> > Hi all,> > # Sorry, I accidentally emailed the following to dev@, so re-sending to he...
   Author: Jeff Jirsa , 2018-10-16, 16:32
Deprecating/removing PropertyFileSnitch? - Cassandra - [mail # dev]
...We should, but the 4.0 features that log/reject verbs to invalid replicas solves a lot of the concerns here -- Jeff Jirsa> On Oct 16, 2018, at 4:10 PM, Jeremy Hanna  wrote:> > ...
   Author: Jeff Jirsa , 2018-10-16, 14:59
[expand - 1 more] - Cassandra: Inconsistent data on reads (LOCAL_QUORUM) - Cassandra - [mail # user]
...Are you SURE there are no writes to that table coming from another DC?-- Jeff Jirsa> On Oct 15, 2018, at 5:34 PM, Naik, Ninad  wrote:> > Thanks Jeff. We're not doing deletes, b...
   Author: Jeff Jirsa , 2018-10-15, 16:49
Installing a Cassandra cluster with multiple Linux OSs (Ubuntu+CentOS) - Cassandra - [mail # user]
...Should be fine, just get the java and kernel versions and kernel tuning params as close as possible-- Jeff Jirsa> On Oct 14, 2018, at 5:09 PM, Eyal Bar  wrote:> > Hi all,> &...
   Author: Jeff Jirsa , 2018-10-14, 16:40
[expand - 1 more] - CASSANDRA-13241 lower default chunk_length_in_kb - Cassandra - [mail # dev]
...> On Oct 12, 2018, at 6:46 AM, Pavel Yaskevich  wrote:> >> On Thu, Oct 11, 2018 at 4:31 PM Ben Bromhead  wrote:>> >> This is something that's bugged me for ...
   Author: Jeff Jirsa , 2018-10-12, 08:53
[expand - 1 more] - [EXTERNAL] Re: Rolling back Cassandra upgrades (tarball) - Cassandra - [mail # user]
...sstable version alone isn’t sufficient - there can be other surprises that will break the lower version (commitlog format change, new types or concepts like UDTs that may appear in the schem...
   Author: Jeff Jirsa , 2018-10-02, 01:29
MD5 in the read path - Cassandra - [mail # dev]
...In some installations, it's used for hashing the partition key to find thehost ( RandomPartitioner )It's used for prepared statement IDsIt's used for hashing the data for reads to know if th...
   Author: Jeff Jirsa , 2018-09-26, 23:14
[expand - 1 more] - TWCS + subrange repair = excessive re-compaction? - Cassandra - [mail # user]
...> On Sep 24, 2018, at 3:47 AM, Oleksandr Shulgin  wrote:> >> On Mon, Sep 24, 2018 at 10:50 AM Jeff Jirsa  wrote:>> Do your partitions span time windows?> > ...
   Author: Jeff Jirsa , 2018-09-24, 11:08