Displaying #cassandra-dev/2017-04-24.log:

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Mon Apr 24 01:26:20 2017  mck_sw:can anyone kick a rebuild off cassci's `cassandra-3.11_dtest` build again please? massive amount of failures on #103 and i just don't think it's related to what i pushed.
Mon Apr 24 01:26:21 2017  CassBotJr:https://issues.apache.org/jira/browse/CASSANDRA-103 (Resolved; Fixed; 0.3): "Move generated thrift code"
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Mon Apr 24 12:59:11 2017  iksaif_:Hello, if anybody has time I'm looking for reviews for CASSANDRA-13418 and CASSANDRA-13432 :)
Mon Apr 24 12:59:11 2017  CassBotJr:https://issues.apache.org/jira/browse/CASSANDRA-13418 (Open; Unresolved; Unscheduled): "Allow TWCS to ignore overlaps when dropping fully expired sstables"
Mon Apr 24 12:59:11 2017  CassBotJr:https://issues.apache.org/jira/browse/CASSANDRA-13432 (Patch Available; Unresolved; 2.1.x): "MemtableReclaimMemory can get stuck because of lack of timeout in getTopLevelColumns()"
Mon Apr 24 13:45:00 2017  exlt:!build cassandra-3.11_dtest
Mon Apr 24 13:45:00 2017  cassci:exlt: job cassandra-3.11_dtest build scheduled with a quiet period of 15 seconds
Mon Apr 24 13:45:10 2017  exlt:mck_sw: there you go :)
Mon Apr 24 13:46:23 2017  clohfink_:Joined the channel
Mon Apr 24 13:47:09 2017  exlt:"CassandraDaemon.java:706 - Local host name unknown: java.net.UnknownHostException"
Mon Apr 24 13:47:52 2017  exlt:this setup race happens every once in a while and is annoying - it's been brought up to the openstack admins
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Mon Apr 24 14:31:02 2017  jameshowe:Joined the channel
Mon Apr 24 14:33:19 2017  jameshowe:What was the outcome of this thread? http://www.mail-archive.com/search?l=dev%40cassandra.apache.org&q=subject%3A%22Re%5C%3A+Wrapping+up+tick%5C-tock%22&o=newest
Mon Apr 24 14:33:58 2017  jameshowe:Is there going to be a 3.11 release, or is 4.0 the next one?
Mon Apr 24 14:35:40 2017  pat_:Joined the channel
Mon Apr 24 14:36:37 2017  pat_:Hi, is there any guide/systems design docs for someone who would like to contribute/fork the Cassandra code?
Mon Apr 24 14:36:43 2017  exlt:There will not be a 3.11 tick-tock release, but there will be a 3.11.0 release that will get long-term maintenance
Mon Apr 24 14:36:50 2017  pat_:Or should I just go through the code
Mon Apr 24 14:38:48 2017  jameshowe:exlt: any idea when? I would have expected it beginning of March...
Mon Apr 24 14:39:24 2017  jameshowe:under the old scheme
Mon Apr 24 14:39:43 2017  exlt:jameshowe: are all the tests passing reliably on the cassandra-3.11 branch? that's the release goal
Mon Apr 24 14:40:36 2017  exlt:http://cassci.datastax.com/view/cassandra-3.11/ - I started a rerun of _dtest just a little bit ago - there are a few others failing
Mon Apr 24 14:41:32 2017  exlt:pat_: https://cassandra.apache.org/doc/latest/development/index.html is a basic "how to contribute" - as far as "what to work on", that's up to you :)
Mon Apr 24 14:42:16 2017  jameshowe:someone should probably update http://cassandra.apache.org/download/, which still says "Cassandra is moving to a monthly release process called Tick-Tock"
Mon Apr 24 14:42:48 2017  pat_:Cool thanks
Mon Apr 24 14:45:26 2017  pat_:Another thing I was wondering (not sure if this is the right Fourm), while looking over the code/design. Was when you do an insert from a client does the client determine what node to do the insert on or does it send that to the C* server to do that?
Mon Apr 24 14:48:19 2017  jameshowe:pat_ client determines the coordinator node, coordinator determines the data node(s)
Mon Apr 24 14:51:41 2017  pat_:So I assume each coordinator node maintains a pool of tcp connections to each other C* node then?
Mon Apr 24 14:53:17 2017  bdeggleston:pat_: correct
Mon Apr 24 14:53:36 2017  pat_:So what happens if you have a large cluster say 5000/10000 nodes would each server have one connection to each server?
Mon Apr 24 14:54:19 2017  pat_:Would there not be a massive overhead for all the connections?
Mon Apr 24 14:54:48 2017  pat_:Or this there a practical max on the number of nodes in a single cluster?
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Mon Apr 24 14:55:31 2017  bdeggleston:yeah you'd have a lot of connections
Mon Apr 24 14:55:45 2017  bdeggleston:I think the practical max is currently around 1000 nodes per cluster
Mon Apr 24 14:56:48 2017  pat_:I assume the likes of Linkedin/Netflix with the 100000 node clusters would actually be 100 clusters
Mon Apr 24 14:59:19 2017  bdeggleston:right, often you have many applications running on C*, but not all on the same cluster
Mon Apr 24 15:01:01 2017  pat_:True I got the impression from some blog posts it was a single 100k cluster. Which in reality wouldnt work with the internode overhead
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Mon Apr 24 17:02:41 2017  aweisberg:exlt: The build history for https://builds.apache.org/view/A-D/view/Cassandra/job/Cassandra-devbranch-dtest/ is so short. 10 builds, if I have five branches to test it means the builds will disappear potentially before I even check the results. Is the right way to get the number increased to talk to INFRA?
Mon Apr 24 17:02:50 2017  aweisberg:Err file a ticket
Mon Apr 24 17:04:06 2017  exlt:they have asked all job histories to be set to 5 - I set it to 10
Mon Apr 24 17:05:25 2017  exlt:emailing results out would probably be the best way to grab job history, I guess
Mon Apr 24 17:07:08 2017  exlt:basically, no INFRA likely won't help with this, aweisberg, since we're already saving more than they asked Jenkins users to save
Mon Apr 24 17:07:39 2017  aweisberg:OK. So is emailing the results an INFRA ticket? Would this be a mailing list? Or could it email the person who initiated the build?
Mon Apr 24 17:09:05 2017  exlt:no, everything comes from the DSL we manage the jobs with - INFRA does not manage jobs, they manage the Jenkins service
Mon Apr 24 17:09:38 2017  exlt:https://git1-us-west.apache.org/repos/asf?p=cassandra-builds.git
Mon Apr 24 17:10:46 2017  exlt:we could add an email param, then a publish step to email the results out
Mon Apr 24 17:11:14 2017  exlt:throw me a JIRA or a patch to https://git1-us-west.apache.org/repos/asf?p=cassandra-builds.git;a=blob;f=jenkins-dsl/cassandra_job_dsl_seed.groovy
Mon Apr 24 17:13:15 2017  exlt:https://builds.apache.org/plugin/job-dsl/api-viewer/index.html for the DSL API
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Mon Apr 24 17:16:20 2017  aweisberg:exlt: Thanks I'll take a look
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Mon Apr 24 22:35:56 2017  mck_sw:exlt: thanks for rebuilding cassandra-3.11_dtest. looks as expected now.
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