[jira] [Resolved] (HBASE-29234) Handle java.lang.reflect.InaccessibleObjectException in HFileSystem

["Istvan Toth (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-29234?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Istvan Toth resolved HBASE-29234.
---------------------------------
    Fix Version/s: 2.7.0
                   3.0.0-beta-2
                   2.6.3
                   2.5.12
       Resolution: Fixed

Committed to all active branches.
Thanks for the review [~zhangduo] .

> Handle java.lang.reflect.InaccessibleObjectException in HFileSystem
> -------------------------------------------------------------------
>
>                 Key: HBASE-29234
>                 URL: https://issues.apache.org/jira/browse/HBASE-29234
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Istvan Toth
>            Assignee: Istvan Toth
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 2.7.0, 3.0.0-beta-2, 2.6.3, 2.5.12
>
>
> This is from the Hadoop test suite, but the problem is in HBase:
> {noformat}
> [ERROR] org.apache.hadoop.yarn.server.timelineservice.storage.TestTimelineReaderHBaseDown.testTimelineReaderDetectsHBaseDown  Time elapsed: 0.282 s  <<< ERROR!
> java.lang.reflect.InaccessibleObjectException: Unable to make private native java.lang.reflect.Field[] java.lang.Class.getDeclaredFields0(boolean) accessible: module java.base does not "opens java.lang" to unnamed module @541e4305
>     at java.base/java.lang.reflect.AccessibleObject.throwInaccessibleObjectException(AccessibleObject.java:353)
>     at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:329)
>     at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:277)
>     at java.base/java.lang.reflect.Method.checkCanSetAccessible(Method.java:182)
>     at java.base/java.lang.reflect.Method.setAccessible(Method.java:176)
>     at org.apache.hadoop.hbase.util.ReflectionUtils.getModifiersField(ReflectionUtils.java:286)
>     at org.apache.hadoop.hbase.fs.HFileSystem.addLocationsOrderInterceptor(HFileSystem.java:326)
>     at org.apache.hadoop.hbase.fs.HFileSystem.addLocationsOrderInterceptor(HFileSystem.java:285)
>     at org.apache.hadoop.hbase.fs.HFileSystem.<init>(HFileSystem.java:96)
>     at org.apache.hadoop.hbase.fs.HFileSystem.get(HFileSystem.java:453)
> {noformat}
> Due to JEP416, we are no longer able to set the LocationsOrderInterceptor on JDK18+.
> While the code is supposed to catch these instances and still work (just not optimally), it does not catch InaccessibleObjectException.
> Catching InaccessibleObjectException is not real fix, but it allows for running with JDK18+.
> The real fix would either be avoiding reflection for this (which probably requires Hadoop support), or using the sanity-draining workaround for JEP416 which floats around on stackoverflow.



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