Hi Chris, thank you for detailed explanation, now I see the exact issue after reading the description of YARN-11794.
I have full confidence in Java cross-platform nature, but given that Hadoop involves some native code, and requires some native libraries to build and run, I'm afraid I must build the code on the same OS with the same native libraries installed as the target to avoid potential linkage issues. Also thank you for sharing the Hadoop Hardware/Software Requirements Policies, it sounds reasonable, and I think we can and should follow it to discuss the support of CentOS 7, maybe mark CentOS 7 support deprecated 3.4.2 or 3.5.0 first? Thanks, Cheng Pan > On Mar 12, 2025, at 07:17, Chris Nauroth <cnaur...@apache.org> wrote: > > I'm adding Cheng Pan, who expressed concerns here: > > https://github.com/apache/hadoop/pull/7493#issuecomment-2710815286 > > Cheng, this is a build time issue. If it doesn't impact runtime, then is it > still a problem for you? I can imagine it might still be an impact if you > need to make a custom patched build from source. > > We do have some prior established policies for this sort of thing: > > https://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-common/Compatibility.html#Hardware.2FSoftware_Requirements > > "Support for any OS SHOULD NOT be dropped without first being documented as > deprecated for a full major release and MUST NOT be dropped without first > being deprecated for at least a full minor release." > > There is nothing in the phrasing about specific Linux distros, but I think if > we were to follow the strictest interpretation, then the 3.4 release line > would continue to work for the same OS distros. > > I understand the other way forward is to look for a gRPC compiler version > that works on CentOS 7 and is also compatible with the Netty upgrade. Has > there been any investigation into that? > > Chris Nauroth > > > On Mon, Mar 10, 2025 at 9:54 PM Istvan Toth <st...@apache.org > <mailto:st...@apache.org>> wrote: >> CC to d...@hadoop.apache.org <mailto:d...@hadoop.apache.org> >> >> On Tue, Mar 11, 2025 at 5:51 AM Istvan Toth <st...@apache.org >> <mailto:st...@apache.org>> wrote: >> >> > Hi, >> > >> > As reported in YARN-11794 , building Hadoop on Centos 7 has been broken >> > for some time, and I don't see an easy way to fix it. >> > >> > I propose removing Centos 7 from the supported build platforms, and >> > removing the CentOs 7 precommit tests from Jenkins HADOOP-19489 . >> > >> > Note that this is a build isse, this does not affect running Hadoop >> > on CentOS. >> > >> > Istvan >> >
