I should point out that Log4j 2 has shipped a Flume Appender since before it went GA. The Flume Log4j Appender is for users who use Log4j 1.x to connect to Flume. There really is no reason to drop that even if Flume itself starts using Log4j 2. Since Flume is a standalone app there really isn’t anything that requires a break in compatibility.
Ralph > On Oct 21, 2016, at 11:24 AM, Attila Simon <s...@cloudera.com> wrote: > > Hi Lior, > > Thanks a lot! Based on these it is indeed flume 2.0 and I have no objection > having it than (don't know when it will be but hope we can speed up the > release cycles). > > Cheers, > Attila > > > *Attila Simon* > Software Engineer > Email: s...@cloudera.com > > [image: Cloudera Inc.] > > On Thu, Oct 20, 2016 at 12:11 PM, Lior Zeno <liorz...@gmail.com> wrote: > >> Sure. >> >> First, the Log4jAppender will be deprecated. Log4j2 already provides a >> Flume appender [1]. >> Second, since we use almost exclusively the SLF4j API in Flume, the code >> will only slightly change. The major difference is with the configuration >> files which have changed from 1.x to 2.x [2]. >> >> [1] >> https://logging.apache.org/log4j/2.x/manual/appenders.html#FlumeAppender >> [2] https://logging.apache.org/log4j/2.x/manual/migration.html. >> >> On Thu, Oct 20, 2016 at 11:44 AM, Attila Simon <s...@cloudera.com> wrote: >> >>> Hi Lior, >>> >>> Could you please explain a bit what will break? >>> >>> Cheers, >>> Attila >>> >>> On Tuesday, 18 October 2016, Lior Zeno <liorz...@gmail.com> wrote: >>> >>>> Hi All, >>>> >>>> Log4j (v1) has been EOL'ed over a year now ( >>>> https://blogs.apache.org/foundation/entry/apache_ >>> logging_services_project_ >>>> announces) >>>> and is no longer officially supported. >>>> >>>> I propose we migrate to Log4j 2. We can begin with using the Log4j 1.x >>>> bridge, and then incrementally move the whole codebase. >>>> >>>> Since this is a breaking change, I think we should schedule this to >> Flume >>>> 2.0.0. >>>> >>>> Thoughts? >>>> >>>> Thanks >>>> >>> >>> >>> -- >>> >>> *Attila Simon* >>> Software Engineer >>> Email: s...@cloudera.com >>> >>> [image: Cloudera Inc.] >>> >>
