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Posted to users@nifi.apache.org by Vibhath Ileperuma <vi...@gmail.com> on 2021/05/05 13:12:57 UTC
Warnings printed when NIFI is starting
Hi All,
I tried to start NIFI binary downloaded from apache NIFI website, in a
linux environment in which java openjdk is installed. When I start the
NIFI, the following warnings are printed. These warnings are written in
nifi-boostrap.log file too.
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by
org.apache.nifi.bootstrap.util.OSUtils
(file:/x01/vibhath/nifi-1.13.2/lib/bootstrap/nifi-bootstrap-1.13.2.jar) to
method java.lang.ProcessImpl.pid()
WARNING: Please consider reporting this to the maintainers of
org.apache.nifi.bootstrap.util.OSUtils
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
When oracle jdk is used, no warnings are printed. Is this warings printed
because of openJDK? Could you please let me know the impact of these
warnings.
Is it possible to find an openJDK supported NIFI binary from the internet?
Or else, should we build NIFI from source?
I would be grateful if you could clarify my doubts.
*Best Regards,*
*Vibhath*
Re: Warnings printed when NIFI is starting
Posted by Vibhath Ileperuma <vi...@gmail.com>.
Thank you David and Cristiano.
We are currently using openjdk11 and we can't change the version.
Any idea, arround when the next release will be released.
Best Regards,
Vibhath.
On Wed, 5 May 2021, 9:49 pm David Handermann, <ex...@gmail.com>
wrote:
> Hi Vibhath,
>
> NiFi supports Java 8 and 11, and automated builds regularly run on
> AdoptOpenJDK and Azul Zulu JDK. The particular error you mentioned was
> recently resolved in a pull request for NIFI-6714. The fix will be
> included in the next release of NiFi.
>
> https://issues.apache.org/jira/browse/NIFI-6714
>
> The message is a warning on Java 11, but does not prevent NiFi from
> starting. Newer versions of Java block such illegal reflective access
> operations, so for now, Java 8 or 11 should work.
>
> Regards,
> David Handermann
>
> On Wed, May 5, 2021 at 10:22 AM Cristiano Silva <cr...@gmail.com>
> wrote:
>
>> I use openjdk 8.
>>
>> Check the version of java (openjdk) you are using.
>>
>> Try using it (openjdk 8) and see if it works.
>>
>> Atenciosamente,
>> Cristiano Luís Turbino de França e Silva
>> ==============================
>> GNU / Linux
>> , , / .-.
>> / \ / (e e)
>> ((__-^^-,-^^-__)) / _.`V'._
>> `-_---' `---_-' / //~~W~~\\
>> <__|o ` 'o|__> / //, ,\\
>> \ ` / / // | | \\
>> ): :( / \) | | (/
>> :o_o: / \ /
>> "-" / `w - w'
>>
>>
>> On Wed, May 5, 2021 at 10:13 AM Vibhath Ileperuma <
>> vibhatharunapriya@gmail.com> wrote:
>>
>>> Hi All,
>>>
>>> I tried to start NIFI binary downloaded from apache NIFI website, in a
>>> linux environment in which java openjdk is installed. When I start the
>>> NIFI, the following warnings are printed. These warnings are written in
>>> nifi-boostrap.log file too.
>>>
>>> WARNING: An illegal reflective access operation has occurred
>>>
>>> WARNING: Illegal reflective access by
>>> org.apache.nifi.bootstrap.util.OSUtils
>>> (file:/x01/vibhath/nifi-1.13.2/lib/bootstrap/nifi-bootstrap-1.13.2.jar) to
>>> method java.lang.ProcessImpl.pid()
>>>
>>> WARNING: Please consider reporting this to the maintainers of
>>> org.apache.nifi.bootstrap.util.OSUtils
>>>
>>> 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
>>>
>>>
>>> When oracle jdk is used, no warnings are printed. Is this warings
>>> printed because of openJDK? Could you please let me know the impact of
>>> these warnings.
>>>
>>> Is it possible to find an openJDK supported NIFI binary from the
>>> internet? Or else, should we build NIFI from source?
>>>
>>>
>>> I would be grateful if you could clarify my doubts.
>>>
>>>
>>>
>>> *Best Regards,*
>>>
>>> *Vibhath*
>>>
>>>
>>>
Re: Warnings printed when NIFI is starting
Posted by David Handermann <ex...@gmail.com>.
Hi Vibhath,
NiFi supports Java 8 and 11, and automated builds regularly run on
AdoptOpenJDK and Azul Zulu JDK. The particular error you mentioned was
recently resolved in a pull request for NIFI-6714. The fix will be
included in the next release of NiFi.
https://issues.apache.org/jira/browse/NIFI-6714
The message is a warning on Java 11, but does not prevent NiFi from
starting. Newer versions of Java block such illegal reflective access
operations, so for now, Java 8 or 11 should work.
Regards,
David Handermann
On Wed, May 5, 2021 at 10:22 AM Cristiano Silva <cr...@gmail.com>
wrote:
> I use openjdk 8.
>
> Check the version of java (openjdk) you are using.
>
> Try using it (openjdk 8) and see if it works.
>
> Atenciosamente,
> Cristiano Luís Turbino de França e Silva
> ==============================
> GNU / Linux
> , , / .-.
> / \ / (e e)
> ((__-^^-,-^^-__)) / _.`V'._
> `-_---' `---_-' / //~~W~~\\
> <__|o ` 'o|__> / //, ,\\
> \ ` / / // | | \\
> ): :( / \) | | (/
> :o_o: / \ /
> "-" / `w - w'
>
>
> On Wed, May 5, 2021 at 10:13 AM Vibhath Ileperuma <
> vibhatharunapriya@gmail.com> wrote:
>
>> Hi All,
>>
>> I tried to start NIFI binary downloaded from apache NIFI website, in a
>> linux environment in which java openjdk is installed. When I start the
>> NIFI, the following warnings are printed. These warnings are written in
>> nifi-boostrap.log file too.
>>
>> WARNING: An illegal reflective access operation has occurred
>>
>> WARNING: Illegal reflective access by
>> org.apache.nifi.bootstrap.util.OSUtils
>> (file:/x01/vibhath/nifi-1.13.2/lib/bootstrap/nifi-bootstrap-1.13.2.jar) to
>> method java.lang.ProcessImpl.pid()
>>
>> WARNING: Please consider reporting this to the maintainers of
>> org.apache.nifi.bootstrap.util.OSUtils
>>
>> 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
>>
>>
>> When oracle jdk is used, no warnings are printed. Is this warings printed
>> because of openJDK? Could you please let me know the impact of these
>> warnings.
>>
>> Is it possible to find an openJDK supported NIFI binary from the
>> internet? Or else, should we build NIFI from source?
>>
>>
>> I would be grateful if you could clarify my doubts.
>>
>>
>>
>> *Best Regards,*
>>
>> *Vibhath*
>>
>>
>>
Re: Warnings printed when NIFI is starting
Posted by Cristiano Silva <cr...@gmail.com>.
I use openjdk 8.
Check the version of java (openjdk) you are using.
Try using it (openjdk 8) and see if it works.
Atenciosamente,
Cristiano Luís Turbino de França e Silva
==============================
GNU / Linux
, , / .-.
/ \ / (e e)
((__-^^-,-^^-__)) / _.`V'._
`-_---' `---_-' / //~~W~~\\
<__|o ` 'o|__> / //, ,\\
\ ` / / // | | \\
): :( / \) | | (/
:o_o: / \ /
"-" / `w - w'
On Wed, May 5, 2021 at 10:13 AM Vibhath Ileperuma <
vibhatharunapriya@gmail.com> wrote:
> Hi All,
>
> I tried to start NIFI binary downloaded from apache NIFI website, in a
> linux environment in which java openjdk is installed. When I start the
> NIFI, the following warnings are printed. These warnings are written in
> nifi-boostrap.log file too.
>
> WARNING: An illegal reflective access operation has occurred
>
> WARNING: Illegal reflective access by
> org.apache.nifi.bootstrap.util.OSUtils
> (file:/x01/vibhath/nifi-1.13.2/lib/bootstrap/nifi-bootstrap-1.13.2.jar) to
> method java.lang.ProcessImpl.pid()
>
> WARNING: Please consider reporting this to the maintainers of
> org.apache.nifi.bootstrap.util.OSUtils
>
> 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
>
>
> When oracle jdk is used, no warnings are printed. Is this warings printed
> because of openJDK? Could you please let me know the impact of these
> warnings.
>
> Is it possible to find an openJDK supported NIFI binary from the
> internet? Or else, should we build NIFI from source?
>
>
> I would be grateful if you could clarify my doubts.
>
>
>
> *Best Regards,*
>
> *Vibhath*
>
>
>