[jira] [Commented] (HBASE-18588) Verify we're using netty .so epolling on linux post HBASE-18271

["Duo Zhang (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-18588?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16125363#comment-16125363 ] 

Duo Zhang commented on HBASE-18588:
-----------------------------------

It fails for me in eclipse...

{quote}
017-08-14 16:19:10,522 ERROR [main] hbase.MiniHBaseCluster(230): Error starting cluster
java.lang.RuntimeException: Failed construction of Master: class org.apache.hadoop.hbase.master.HMasterorg.apache.hadoop.hbase.shaded.io.netty.channel.epoll.NativeStaticallyReferencedJniMethods.epollin()I
	at org.apache.hadoop.hbase.util.JVMClusterUtil.createMasterThread(JVMClusterUtil.java:143)
	at org.apache.hadoop.hbase.LocalHBaseCluster.addMaster(LocalHBaseCluster.java:217)
	at org.apache.hadoop.hbase.LocalHBaseCluster.<init>(LocalHBaseCluster.java:152)
	at org.apache.hadoop.hbase.MiniHBaseCluster.init(MiniHBaseCluster.java:215)
	at org.apache.hadoop.hbase.MiniHBaseCluster.<init>(MiniHBaseCluster.java:94)
	at org.apache.hadoop.hbase.HBaseTestingUtility.startMiniHBaseCluster(HBaseTestingUtility.java:1130)
	at org.apache.hadoop.hbase.HBaseTestingUtility.startMiniCluster(HBaseTestingUtility.java:1083)
	at org.apache.hadoop.hbase.HBaseTestingUtility.startMiniCluster(HBaseTestingUtility.java:954)
	at org.apache.hadoop.hbase.HBaseTestingUtility.startMiniCluster(HBaseTestingUtility.java:936)
	at org.apache.hadoop.hbase.HBaseTestingUtility.startMiniCluster(HBaseTestingUtility.java:918)
	at org.apache.hadoop.hbase.client.AbstractTestScanCursor.setUpBeforeClass(AbstractTestScanCursor.java:75)
	at org.apache.hadoop.hbase.client.TestAsyncResultScannerCursor.setUpBeforeClass(TestAsyncResultScannerCursor.java:34)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24)
	at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
	at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)
	at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:678)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
Caused by: java.lang.UnsatisfiedLinkError: failed to load the required native library
	at org.apache.hadoop.hbase.shaded.io.netty.channel.epoll.Epoll.ensureAvailability(Epoll.java:78)
	at org.apache.hadoop.hbase.shaded.io.netty.channel.epoll.EpollEventLoopGroup.<clinit>(EpollEventLoopGroup.java:38)
	at org.apache.hadoop.hbase.util.NettyEventLoopGroupConfig.<init>(NettyEventLoopGroupConfig.java:61)
	at org.apache.hadoop.hbase.regionserver.HRegionServer.<init>(HRegionServer.java:553)
	at org.apache.hadoop.hbase.master.HMaster.<init>(HMaster.java:469)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
	at org.apache.hadoop.hbase.util.JVMClusterUtil.createMasterThread(JVMClusterUtil.java:140)
	... 27 more
Caused by: java.lang.UnsatisfiedLinkError: org.apache.hadoop.hbase.shaded.io.netty.channel.epoll.NativeStaticallyReferencedJniMethods.epollin()I
	at org.apache.hadoop.hbase.shaded.io.netty.channel.epoll.NativeStaticallyReferencedJniMethods.epollin(Native Method)
	at org.apache.hadoop.hbase.shaded.io.netty.channel.epoll.Native.<clinit>(Native.java:66)
	at org.apache.hadoop.hbase.shaded.io.netty.channel.epoll.Epoll.<clinit>(Epoll.java:33)
	... 36 more
{quote}

> Verify we're using netty .so epolling on linux post HBASE-18271
> ---------------------------------------------------------------
>
>                 Key: HBASE-18588
>                 URL: https://issues.apache.org/jira/browse/HBASE-18588
>             Project: HBase
>          Issue Type: Task
>          Components: test
>    Affects Versions: 2.0.0
>            Reporter: stack
>            Assignee: stack
>             Fix For: 2.0.0
>
>
> This is a task to verify that indeed we are using .so native epoll on linux. This task is probably unnecessary since we'd fail on the linux build box if this was not in place but verify that our relocation is indeed finding the native code. Assigned myself.



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