Hey Ashutosh, I switched to JDK8 in master last weekend. Jenkins has been running all tests in Java8 successfully for a week now. There are still a few tests we need to fix, but so far is looking good.
Sergio On Fri, Jun 3, 2016 at 12:02 AM, Ashutosh Chauhan <hashut...@apache.org> wrote: > Now that branch-2.1 has been cut, I think its an opportune time to drop > support of jdk7 altogether in master. That is we compile using jdk8 as > well. What do others think? > > Ashutosh > > On Fri, May 27, 2016 at 7:41 PM, Sergio Pena <sergio.p...@cloudera.com> > wrote: > > > I did the change to JDK8 on Ptest now. > > > > Please let me tknow if there are issues with Java8. > > > > - Sergio > > > > On Fri, May 27, 2016 at 2:45 PM, Sergio Pena <sergio.p...@cloudera.com> > > wrote: > > > > > Thanks Mohit. > > > > > > I will plan to do the JDK8 change on Jenkins today EOD and monitor any > > > issues through the weekend. > > > > > > - Sergio > > > > > > > > > On Fri, May 27, 2016 at 2:58 AM, Mohit Sabharwal <mo...@cloudera.com> > > > wrote: > > > > > >> Update on moving Hive2 tests to JDK8: I've addressed almost all test > > >> failures in HIVE-13547 on java8 branch. There is one remaining > > >> open item (HIVE-13834) which is currently assigned. Given current > > >> state of flaky test runs, there might be few more. > > >> > > >> I will work with Sergio to merge the test fixes to master and switch > > >> the Hive2 pre-commit job to use JDK8, hopefully sometime tomorrow. > > >> > > >> After Hive2 tests switch, if your patch sees ordering related test > > >> failures in pre-commit run, it's likely JDK version related and you'll > > >> need to build & re-run the test using JDK8. Number of such tests > > >> should be relatively small. > > >> > > >> On Tue, Apr 19, 2016 at 10:43 AM, Mohit Sabharwal <mo...@cloudera.com > > > > >> wrote: > > >> > > >> > Created HIVE-13547 to track switching 2x tests to JDK8. > > >> > > > >> > On Wed, Apr 13, 2016 at 10:02 AM, Sergio Pena < > > sergio.p...@cloudera.com > > >> > > > >> > wrote: > > >> > > > >> >> I agree with such change as JDK7 is not longer supported. > > >> >> > > >> >> Changes on Jenkins and Hive PTest shouldn't be hard. We just need > to > > >> >> replace the path from java7 to java8. But I think we should fix all > > >> JDK8 > > >> >> issues or most of them before doing the change or we will end up > > >> having a > > >> >> lot of failures on all JIRAs running pre-commit tests. > > >> >> > > >> >> +1 with the change. > > >> >> > > >> >> On Mon, Apr 11, 2016 at 9:34 PM, Siddharth Seth <ss...@apache.org> > > >> wrote: > > >> >> > > >> >> > Option 3 sounds good. I'd ideally like to make JDK8 the minimum > > >> >> requirement > > >> >> > soon as well. > > >> >> > > > >> >> > On Mon, Apr 11, 2016 at 4:59 PM, Szehon Ho <sze...@cloudera.com> > > >> wrote: > > >> >> > > > >> >> > > Sounds like a good plan, +1 > > >> >> > > > > >> >> > > On Mon, Apr 11, 2016 at 4:31 PM, Mohit Sabharwal < > > >> mo...@cloudera.com> > > >> >> > > wrote: > > >> >> > > > > >> >> > > > Thanks, Ashutosh. Makes sense to keep the source and target > as > > >> 1.7 > > >> >> > since > > >> >> > > > we're not using any JDK8 specific features yet. So, option > (3) > > >> >> > > essentially > > >> >> > > > just means using JDK8 exclusively to build & test Hive2. > > >> >> > > > > > >> >> > > > On Sat, Apr 9, 2016 at 12:23 PM, Ashutosh Chauhan < > > >> >> > hashut...@apache.org> > > >> >> > > > wrote: > > >> >> > > > > > >> >> > > > > Hi Mohit, > > >> >> > > > > > > >> >> > > > > I also think option 3 makes sense. We should strive to keep > > >> test > > >> >> > matrix > > >> >> > > > > small so that we can do fast QA runs for dev patches. > > >> >> > > > > We can just use jdk7 to build & test Hive1 and jdk8 to > build > > & > > >> >> test > > >> >> > > > Hive2. > > >> >> > > > > However, I am not sure of explicitly dropping support > > >> altogether > > >> >> for > > >> >> > > jdk7 > > >> >> > > > > on Hive2. We should make sure that in pom.xml java source & > > >> target > > >> >> > > > > compatibility is still 1.7 (which already is the case > > >> currently) > > >> >> so > > >> >> > > that > > >> >> > > > > Hive2 is still compatible with jdk7. Unit tests as I said > we > > >> can > > >> >> run > > >> >> > on > > >> >> > > > > jdk8. > > >> >> > > > > > > >> >> > > > > Thanks, > > >> >> > > > > Ashutosh > > >> >> > > > > > > >> >> > > > > On Fri, Apr 8, 2016 at 4:34 PM, Mohit Sabharwal < > > >> >> mo...@cloudera.com> > > >> >> > > > > wrote: > > >> >> > > > > > > >> >> > > > > > Hi folks, > > >> >> > > > > > > > >> >> > > > > > Oracle EOL'ed (ended public updates) for Java 7 in April > > >> 2015. > > >> >> > > > > > In order to support Java 8, we fixed quite a bunch of > tests > > >> in > > >> >> > > > > > HIVE-8607 (*) early last year. However, since our > > pre-commit > > >> >> tests > > >> >> > > run > > >> >> > > > > > on JDK7 only, any JDK8 test failures are getting ignored. > > As > > >> a > > >> >> > > result, > > >> >> > > > > > the count has crept up > > >> >> > > > > > < > > >> >> > > > > > > > >> >> > > > > > > >> >> > > > > > >> >> > > > > >> >> > > > >> >> > > >> > > > http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/HIVE-TRUNK-JAVA8/ > > >> >> > > > > > > > > >> >> > > > > > back > > >> >> > > > > > from zero to 125. > > >> >> > > > > > > > >> >> > > > > > Some options to address this: > > >> >> > > > > > > > >> >> > > > > > (1) Run pre-commit tests on both JDK7 and JDK8, in both > 1.x > > >> >> > > > > > and 2.x: This will further slow down the pre-commit run. > > >> >> > > > > > > > >> >> > > > > > (2) Alternate pre-commit test runs between JDK7 and JDK8 > > (in > > >> >> > > > > > both 1.x and 2.x): It's a cheap hack. More messy, though > > >> >> failures > > >> >> > > > > > won't get ignored. > > >> >> > > > > > > > >> >> > > > > > (3) Drop support for JDK7 in Hive 2.x, i.e. build and > test > > >> Hive > > >> >> 2.x > > >> >> > > on > > >> >> > > > > > JDK8 only. For Hive 1.x, continue running JDK7 pre-commit > > >> tests. > > >> >> > > > > > The pros are: > > >> >> > > > > > - Simple test matrix. > > >> >> > > > > > - No need to slow down test run or maintain version > > specific > > >> >> golden > > >> >> > > > files > > >> >> > > > > > (**). > > >> >> > > > > > - 2.x looks like the logical place to move to JDK8. > > >> >> > > > > > - Users transitioning to JDK8 for all other services do > not > > >> >> have to > > >> >> > > > > > maintain > > >> >> > > > > > multiple java versions on the cluster. > > >> >> > > > > > > > >> >> > > > > > Option (3) looks most attractive to me. > > >> >> > > > > > > > >> >> > > > > > Moving to JDK8 also lines us up better for Java 9, which > is > > >> on > > >> >> the > > >> >> > > > > > horizon (Oracle will end public updates for Java 8 in Sep > > >> 2017) > > >> >> > > > > > > > >> >> > > > > > Around 100 of the latest crop of failures are due to one > > >> cause > > >> >> > > > > > (HIVE-13409). > > >> >> > > > > > I can take a pass at triaging the rest if there is > > consensus > > >> >> around > > >> >> > > > what > > >> >> > > > > > to do overall. > > >> >> > > > > > > > >> >> > > > > > Thanks, > > >> >> > > > > > Mohit > > >> >> > > > > > > > >> >> > > > > > (*) Most test failures are due to JDK8 using a different > > hash > > >> >> > > function > > >> >> > > > > for > > >> >> > > > > > HashMap compared to JDK7. This results in (mostly > benign, > > >> but > > >> >> hard > > >> >> > > > > > to debug) ordering differences in q-file output related > to > > >> >> > > > serialization > > >> >> > > > > > order of map entries, numbering of stages in query plan, > > etc. > > >> >> > > > > > > > >> >> > > > > > (**) In some cases, hash function related ordering > > >> differences > > >> >> > > > originate > > >> >> > > > > > in external libraries like Avro, antlr, json ,Thrift's > map, > > >> etc. > > >> >> > for > > >> >> > > > > which > > >> >> > > > > > code > > >> >> > > > > > changes are either more involved or led to more test > > >> failures. > > >> >> To > > >> >> > > > > address > > >> >> > > > > > this, > > >> >> > > > > > we added support for version specific golden files > > >> (HIVE-9109). > > >> >> > > > > Currently, > > >> >> > > > > > there > > >> >> > > > > > are ~40 golden files with ".java1.8.out" extension. > > >> >> > > > > > > > >> >> > > > > > > >> >> > > > > > >> >> > > > > >> >> > > > >> >> > > >> > > > >> > > > >> > > > > > > > > >
