Here’s what the current state of various Solr x Java versions: https://wiki.apache.org/solr/SolrJavaVersions
> On Apr 5, 2019, at 3:16 PM, Hari Nakka <nhrjr9...@gmail.com> wrote: > > Thank you. We are planning to upgrade the JDK 11. > Is solr 7.5 fully compatible with openjdk 11. > > > On Thu, Apr 4, 2019 at 9:58 AM Erick Erickson <erickerick...@gmail.com> > wrote: > >> It hasn’t been addressed by any Java 8 releases that I know of. >> >> See: https://issues.apache.org/jira/browse/SOLR-13349 >> >> The work-around in Solr is trivial, see the patch so it’d be simple to >> patch/compile on your own. >> >> It will be released in a Solr 7.7.2 and Solr 8.1 or later, neither of >> which have been released yet. >> >> Or move to Java 9 or later. >> >>> On Apr 3, 2019, at 4:39 PM, Hari Nakka <nhrjr9...@gmail.com> wrote: >>> >>> We are noticing high CPU utilization on below threads. Looks like a >> known >>> issue with. (https://github.com/netty/netty/issues/327) >>> >>> But not sure if this has been addressed in any of the 1.8 releases. >>> >>> Can anyone help with this? >>> >>> >>> Version: solr cloud 7.5 >>> >>> OS: CentOS 7 >>> >>> JDK: Oracle JDK 1.8.0_191 >>> >>> >>> >>> >>> >>> "qtp574568002-3821728" #3821728 prio=5 os_prio=0 tid=0x00007f4f20018000 >>> nid=0x4996 runnable [0x00007f51fc6d8000] >>> >>> java.lang.Thread.State: RUNNABLE >>> >>> at sun.nio.ch.EPollArrayWrapper.epollWait(Native Method) >>> >>> at sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:269) >>> >>> at >> sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:93) >>> >>> at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86) >>> >>> - locked <0x000000064cded430> (a sun.nio.ch.Util$3) >>> >>> - locked <0x000000064cded418> (a >>> java.util.Collections$UnmodifiableSet) >>> >>> - locked <0x000000064cdf6e38> (a sun.nio.ch.EPollSelectorImpl) >>> >>> at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97) >>> >>> at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:101) >>> >>> at >>> org.eclipse.jetty.io >> .ManagedSelector$SelectorProducer.select(ManagedSelector.java:396) >>> >>> at >>> org.eclipse.jetty.io >> .ManagedSelector$SelectorProducer.produce(ManagedSelector.java:333) >>> >>> at >>> >> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.produceTask(EatWhatYouKill.java:357) >>> >>> at >>> >> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:181) >>> >>> at >>> >> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:168) >>> >>> at >>> >> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:126) >>> >>> at >>> >> org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:366) >>> >>> at >>> >> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:762) >>> >>> at >>> >> org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:680) >>> >>> at java.lang.Thread.run(Thread.java:748) >> >>
