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  1. HBase
  2. HBASE-22972 [JDK11] Support JDK11 LTS in HBase
  3. HBASE-25058

Export necessary modules when running under JDK11

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Details

    • Sub-task
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • 3.0.0-alpha-1, 2.3.0, 2.4.0
    • 2.5.0, 3.0.0-alpha-3
    • Performance, rpc
    • None
    • Reviewed

    Description

      Running on JDK11, I noticed this in the debug logging. It looks like netty is using sun.misc.Unsafe instead of the new location on jdk11.

      2020-09-17 00:21:53,318 DEBUG org.apache.hbase.thirdparty.io.netty.util.internal.PlatformDependent0: jdk.internal.misc.Unsafe.allocateUninitializedArray(int): unavailable
      java.lang.IllegalAccessException: class org.apache.hbase.thirdparty.io.netty.util.internal.PlatformDependent0$6 cannot access class jdk.internal.misc.Unsafe (in module java.base) because module java.base does not export jdk.internal.misc to unnamed module @78461bc4
              at java.base/jdk.internal.reflect.Reflection.newIllegalAccessException(Reflection.java:361)
              at java.base/java.lang.reflect.AccessibleObject.checkAccess(AccessibleObject.java:591)
              at java.base/java.lang.reflect.Method.invoke(Method.java:558)
              at org.apache.hbase.thirdparty.io.netty.util.internal.PlatformDependent0$6.run(PlatformDependent0.java:335)
              at java.base/java.security.AccessController.doPrivileged(Native Method)
              at org.apache.hbase.thirdparty.io.netty.util.internal.PlatformDependent0.<clinit>(PlatformDependent0.java:326)
              at org.apache.hbase.thirdparty.io.netty.util.internal.PlatformDependent.isAndroid(PlatformDependent.java:289)
              at org.apache.hbase.thirdparty.io.netty.util.internal.PlatformDependent.<clinit>(PlatformDependent.java:92)
              at org.apache.hbase.thirdparty.io.netty.channel.epoll.Native.loadNativeLibrary(Native.java:228)
              at org.apache.hbase.thirdparty.io.netty.channel.epoll.Native.<clinit>(Native.java:58)
              at org.apache.hbase.thirdparty.io.netty.channel.epoll.Epoll.<clinit>(Epoll.java:39)
              at org.apache.hbase.thirdparty.io.netty.channel.epoll.EpollEventLoop.<clinit>(EpollEventLoop.java:51)
              at org.apache.hbase.thirdparty.io.netty.channel.epoll.EpollEventLoopGroup.newChild(EpollEventLoopGroup.java:150)
              at org.apache.hbase.thirdparty.io.netty.channel.epoll.EpollEventLoopGroup.newChild(EpollEventLoopGroup.java:35)
              at org.apache.hbase.thirdparty.io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>(MultithreadEventExecutorGroup.java:84)
              at org.apache.hbase.thirdparty.io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>(MultithreadEventExecutorGroup.java:58)
              at org.apache.hbase.thirdparty.io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>(MultithreadEventExecutorGroup.java:47)
              at org.apache.hbase.thirdparty.io.netty.channel.MultithreadEventLoopGroup.<init>(MultithreadEventLoopGroup.java:59)
              at org.apache.hbase.thirdparty.io.netty.channel.epoll.EpollEventLoopGroup.<init>(EpollEventLoopGroup.java:112)
              at org.apache.hbase.thirdparty.io.netty.channel.epoll.EpollEventLoopGroup.<init>(EpollEventLoopGroup.java:99)
              at org.apache.hbase.thirdparty.io.netty.channel.epoll.EpollEventLoopGroup.<init>(EpollEventLoopGroup.java:76)
              at org.apache.hadoop.hbase.util.NettyEventLoopGroupConfig.<init>(NettyEventLoopGroupConfig.java:58)
              at org.apache.hadoop.hbase.regionserver.HRegionServer.setupNetty(HRegionServer.java:713)
              at org.apache.hadoop.hbase.regionserver.HRegionServer.<init>(HRegionServer.java:569)
              at org.apache.hadoop.hbase.master.HMaster.<init>(HMaster.java:524)
              at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
              at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
              at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
              at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490)
              at org.apache.hadoop.hbase.master.HMaster.constructMaster(HMaster.java:3054)
              at org.apache.hadoop.hbase.master.HMasterCommandLine.startMaster(HMasterCommandLine.java:236)
              at org.apache.hadoop.hbase.master.HMasterCommandLine.run(HMasterCommandLine.java:140)
              at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:76)
              at org.apache.hadoop.hbase.util.ServerCommandLine.doMain(ServerCommandLine.java:149)
              at org.apache.hadoop.hbase.master.HMaster.main(HMaster.java:3072)
      

      We should try to make this new API accessible to netty for future compatibility.

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            zhangduo Duo Zhang
            ndimiduk Nick Dimiduk
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              Updated:
              Resolved:

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