Thanks Andrew for reporting the issue. This JIRA is out of my radar as it? didn't specify any target version before.
>From my understanding, this issue is related to our previous improvements with >separating client and server jars in HDFS-6200. If we use the new "client" jar >in NN HA deployment, then we will hit the issue reported. I can see two options here: - Without any change in 2.8.0, if user hit the issue when they deploy HA cluster by using new client jar, adding back hdfs jar just like how things work previously - Make the change now in 2.8.0, either moving ConfiguredFailoverProxyProvider to client jar or adding dependency between client jar and server jar. There must be some arguments there on which way to fix is better especially ConfiguredFailoverProxyProvider still has some sever side dependencies. I would prefer the first option, given: - The issue fixing time is unpredictable as there are still discussion on how to fix this issue. Our 2.8.0 release shouldn't be an endless journey which has been deferred several times for more serious issue. - We have workaround for this improvement, no regression happens due to this issue. People can still use hdfs jar in old way. The worst case is improvement for HDFS doesn't work in some cases - that shouldn't block the whole release. I think we should let vote keep going unless someone have more concerns which I could miss. Thanks, Junping ________________________________ From: Andrew Wang <andrew.w...@cloudera.com> Sent: Tuesday, March 14, 2017 2:50 PM To: Junping Du Cc: common-...@hadoop.apache.org; hdfs-dev@hadoop.apache.org; yarn-...@hadoop.apache.org; mapreduce-...@hadoop.apache.org Subject: Re: [VOTE] Release Apache Hadoop 2.8.0 (RC2) Hi Junping, Noticed this possible blocker float by my inbox today. It had an affects but no target version set: https://issues.apache.org/jira/browse/HDFS-11431 Thoughts? Seems like the hadoop-hdfs-client artifact doesn't work right now. Best, Andrew On Tue, Mar 14, 2017 at 1:41 AM, Junping Du <j...@hortonworks.com<mailto:j...@hortonworks.com>> wrote: Hi all, With several important fixes get merged last week, I've created a new release candidate (RC2) for Apache Hadoop 2.8.0. This is the next minor release to follow up 2.7.0 which has been released for more than 1 year. It comprises 2,919 fixes, improvements, and new features. Most of these commits are released for the first time in branch-2. More information about the 2.8.0 release plan can be found here: https://cwiki.apache.org/confluence/display/HADOOP/Hadoop+2.8+Release Please note that RC0 and RC1 are not voted public because significant issues are found just after RC tag getting published. The RC is available at: http://home.apache.org/~junping_du/hadoop-2.8.0-RC2 The RC tag in git is: release-2.8.0-RC2 The maven artifacts are available via repository.apache.org<http://repository.apache.org> at: https://repository.apache.org/content/repositories/orgapachehadoop-1056 Please try the release and vote; the vote will run for the usual 5 days, ending on 03/20/2017 PDT time. Thanks, Junping
