I have to agree anecdotally that when I first upgraded to 3.3.1 I got a bunch of NoSuchMethodExceptions (or similar). This was a while ago so I don't have specifics. It was an easy fix -- recompile hbase with -Dhadoop.version=3.3.1.
On Mon, Dec 20, 2021 at 9:46 PM Wei-Chiu Chuang <weic...@cloudera.com.invalid> wrote: > tl; dr: Pretty sure it won't run. > > Looking at the Hadoop 3.3 support jira (HBASE-22953 > <https://issues.apache.org/jira/browse/HBASE-22953 > <https://issues.apache.org/jira/browse/HBASE-22953>>), > most of the work was > to whitelist additional dependencies. However, the biggest change was > inside the asyncwall HBASE-23833 > <https://issues.apache.org/jira/browse/HBASE-23833 > <https://issues.apache.org/jira/browse/HBASE-23833>> > due to the > relocated protobuf classes. Netty and jetty version updates are mostly > likely to fail your installation as well. > > We strive to make Hadoop follow the public compatibility guidelines. But > from time to time we have to make changes across minor release lines > (between 3.1.2 and 3.3.0) and also unfortunately HBase uses a number of > private Hadoop APIs which can change without notice. > > (I think we can close HBASE-22953 as done at this point) > > On Tue, Dec 21, 2021 at 10:02 AM Josh Elser <els...@apache.org> wrote: > > > Hi Michael! > > > > I have to give you the "default" HBase, but defer you to the Hadoop > > community (or someone from there who is paying attention to this list) > > for the precise answer. > > > > The question you are asking is: does the binary compatibility of Hadoop > > jars changes between Hadoop 3.1.2 and 3.3.0. The short answer is "maybe". > > > > In general, within one Hadoop major version, the likelihood of a change > > which breaks binary compatibility [1] is relatively low. However, "low" > > is not "none". If you're doing this on a local environment or a dev > > system, you're probably OK. I would definitely recommend you recompile > > HBase if you're using it for a production system. You wouldn't want to > > be chasing a fix for this if it manifests in a subtle/strange manner. > > > > - Josh > > > > [1] https://docs.oracle.com/javase/specs/jls/se7/html/jls-13.html > <https://docs.oracle.com/javase/specs/jls/se7/html/jls-13.html> > > > > On 12/20/21 11:01 AM, Michael Wohlwend wrote: > > > Hello all, > > > > > > I have hadoop 3.1.2 running, with hbase 2.1.4 > > > > > > If I want to update to hadoop 3.3.0, is it sufficient to replace all > > the hadoop > > > 3.1.2 jars in the hbase folder tree with the 3.3.0 version? > > > Or do I have to make a new hbase build? > > > > > > > > > Thanks for answering > > > Michael > > > > > > > > > > > >
