flink-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From tzulitai <...@git.apache.org>
Subject [GitHub] flink issue #4454: [hotfix][docs] Add section in docs about writing unit/int...
Date Fri, 04 Aug 2017 10:45:18 GMT
Github user tzulitai commented on the issue:

    @pnowojski adding a link to `TwoPhaseCommitSinkFunctionTest` might make sense for testing
exactly-once delivery.
    There are also often cases where the user, in particular, wants to check that their operator
state semantics are exactly-once.
    However, I think we can also wait on other's opinions on whether or not this information
is really required. Instructions for watermark / timestamp testing makes sense because that's
something users frequently mess up with incorrect extractor implementations. Exactly-once
semantics, however, isn't something the user scope can touch.
    I'm mentioning it because we sometimes have users in the mailing lists testing exactly-once
incorrectly (maybe also because they misunderstood some concepts) and asking.

If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at infrastructure@apache.org or file a JIRA ticket
with INFRA.

View raw message