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https://issues.apache.org/jira/browse/HBASE-22172?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16814910#comment-16814910
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Sakthi edited comment on HBASE-22172 at 4/10/19 10:28 PM:
----------------------------------------------------------
{quote}I did see a warning when trying to launch the hbase shell.
{quote}
Was this after the patch applied [~elserj]. I see that error before the patch
but not after. Could you please share the steps you followed? Was it just after
the launch or while some operations on the shell?
{quote}Where does the prefix java.base come from? Is it maybe wrong (as I feel
like your suppression here should have caught the above warning)?
{quote}
It follows this particular syntax: _--add-opens
module/package=target-module(,target-module)\*_ . So looks like
[java.base|https://docs.oracle.com/en/java/javase/11/docs/api/java.base/module-summary.html]
contains the foundational APIs. Also I followed the *Understanding Runtime
Access Warnings* from this [migration
doc|https://docs.oracle.com/en/java/javase/11/migrate/migration-guide.pdf].
{quote}something else to fix
{quote}
Was planning to file a JIRA for that. Thanks Josh.
was (Author: jatsakthi):
{quote}I did see a warning when trying to launch the hbase shell.
{quote}
Was this after the patch applied [~elserj]. I see that error before the patch
but not after. Could you please share the steps you followed? Was it just after
the launch or while some operations on the shell?
{quote}Where does the prefix java.base come from? Is it maybe wrong (as I feel
like your suppression here should have caught the above warning)?
{quote}
It follows this particular syntax: _--add-opens
module/package=target-module(,target-module)*_ . So looks like
[java.base|https://docs.oracle.com/en/java/javase/11/docs/api/java.base/module-summary.html]
contains the foundational APIs. Also I followed the *Understanding Runtime
Access Warnings* from this [migration
doc|https://docs.oracle.com/en/java/javase/11/migrate/migration-guide.pdf].
{quote}something else to fix
{quote}
Was planning to file a JIRA for that. Thanks Josh.
> Suppress Java 11 reflective access warnings
> -------------------------------------------
>
> Key: HBASE-22172
> URL: https://issues.apache.org/jira/browse/HBASE-22172
> Project: HBase
> Issue Type: Task
> Reporter: Sakthi
> Assignee: Sakthi
> Priority: Major
> Labels: jdk11
> Attachments: hbase-22172.master.001.patch
>
>
> While running a Java 8 compiled hbase on Java 11 system, I found the
> following warnings being thrown. I think we can add the "--add-opens" flag to
> HBASE_OPTS (if the jdk version is 11) to suppress this warning.
> {code:java}
> WARNING: An illegal reflective access operation has occurred
> WARNING: Illegal reflective access by
> org.apache.hadoop.hbase.util.UnsafeAvailChecker
> (file:/Users/jatsakthi/test/HBASE_TEST_AREA/hbase-3.0.0-SNAPSHOT/lib/hbase-common-3.0.0-SNAPSHOT.jar)
> to method java.nio.Bits.unaligned()
> WARNING: Please consider reporting this to the maintainers of
> org.apache.hadoop.hbase.util.UnsafeAvailChecker
> WARNING: Use --illegal-access=warn to enable warnings of further illegal
> reflective access operations
> WARNING: All illegal access operations will be denied in a future release
> {code}
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