My random thoughts. Probably bad takes: There are projects experimenting with JDK17 now. JDK11 active support will end in 6 months. If it's already hard to migrate from JDK8 why not retarget JDK17.
On Tue, Mar 28, 2023 at 10:30 AM Ayush Saxena <ayush...@gmail.com> wrote: > I know Jersey upgrade as a blocker. Some folks were chasing that last year > during 3.3.4 time, I don’t know where it is now, didn’t see then what’s the > problem there but I remember there was some intitial PR which did it for > HDFS atleast, so I never looked beyond that… > > I too had jdk-11 in my mind, but only for trunk. 3.4.x can stay as java-11 > only branch may be, but that is something later to decide, once we get the > code sorted… > > -Ayush > > > On 28-Mar-2023, at 9:16 PM, Steve Loughran <ste...@cloudera.com.invalid> > wrote: > > > > well, how about we flip the switch and get on with it. > > > > slf4j seems happy on java11, > > > > side issue, anyone seen test failures on zulu1.8; somehow my test run is > > failing and i'm trying to work out whether its a mismatch in command > > line/ide jvm versions, or the 3.3.5 JARs have been built with an openjdk > > version which requires IntBuffer implements an overridden method > IntBuffer > > rewind(). > > > > java.lang.NoSuchMethodError: > java.nio.IntBuffer.rewind()Ljava/nio/IntBuffer; > > > > at > org.apache.hadoop.fs.FSInputChecker.verifySums(FSInputChecker.java:341) > > at > > > org.apache.hadoop.fs.FSInputChecker.readChecksumChunk(FSInputChecker.java:308) > > at org.apache.hadoop.fs.FSInputChecker.read1(FSInputChecker.java:257) > > at org.apache.hadoop.fs.FSInputChecker.read(FSInputChecker.java:202) > > at java.io.DataInputStream.read(DataInputStream.java:149) > > > >> On Tue, 28 Mar 2023 at 15:52, Viraj Jasani <vjas...@apache.org> wrote: > >> IIRC some of the ongoing major dependency upgrades (log4j 1 to 2, > jersey 1 > >> to 2 and junit 4 to 5) are blockers for java 11 compile + test > stability. > >> On Tue, Mar 28, 2023 at 4:55 AM Steve Loughran > <ste...@cloudera.com.invalid > >> wrote: > >>> Now that hadoop 3.3.5 is out, i want to propose something new > >>> we switch branch-3.3 and trunk to being java11 only > >>> 1. java 11 has been out for years > >>> 2. oracle java 8 is no longer available under "premier support"; you > >>> can't really get upgrades > >>> https://www.oracle.com/java/technologies/java-se-support-roadmap.html > >>> 3. openJDK 8 releases != oracle ones, and things you compile with them > >>> don't always link to oracle java 8 (some classes in java.nio have > >> added > >>> more overrides) > >>> 4. more and more libraries we want to upgrade to/bundle are java 11 > >> only > >>> 5. moving to java 11 would cut our yetus build workload in half, and > >>> line up for adding java 17 builds instead. > >>> I know there are some outstanding issues still in > >>> https://issues.apache.org/jira/browse/HADOOP-16795 -but are they > >> blockers? > >>> Could we just move to java11 and enhance at our leisure, once java8 is > no > >>> longer a concern. > > --------------------------------------------------------------------- > To unsubscribe, e-mail: common-dev-unsubscr...@hadoop.apache.org > For additional commands, e-mail: common-dev-h...@hadoop.apache.org > >
