Hi,
Thanks, that clarifies it. (
Is it possible to set the log4j2.asyncQueueFullPolicy and
log4j2.discardThreshold in the log4j2 xml configuration file or only as
environment variable?
Greetings,
Christian
On 03.01.18, 09:43, "Remko Popma" <remko.po...@gmail.com> wrote:
No, the default async queue full policy is to block and not drop any
events. (This is different from Logback whose AsyncAppender is “lossy by
default if 80% full”.) Log4j 2.10 will block until space becomes available in
the buffer.
If you configure the DiscardingAsyncQueueFullPolicy
(https://urldefense.proofpoint.com/v2/url?u=https-3A__logging.apache.org_log4j_2.x_log4j-2Dcore_xref_org_apache_logging_log4j_core_async_DiscardingAsyncQueueFullPolicy.html&d=DwIFaQ&c=eIGjsITfXP_y-DLLX0uEHXJvU8nOHrUK8IrwNKOtkVU&r=37nF0SnGtdjmcblOpYG7cKwaPDc1GWo5GNDvnDLF8TE&m=YD5JM4y8v44bpRXCOPKk3J0VIzak5IxqVyGe6fhkqAM&s=Ggo8IbBfo8JQkLyrBQY4HhEpgjf3Flb_EM3Zu5y_Do0&e=),
events below the threshold are discarded when the queue is full. The default
threshold is INFO, so trace and debug events are discarded, while INFO and
higher events will not be discarded so the appender will have to block until
space becomes available.
I hope this clarifies things. :-)
Remko
(Shameless plug) Every java main() method deserves
https://urldefense.proofpoint.com/v2/url?u=http-3A__picocli.info&d=DwIFaQ&c=eIGjsITfXP_y-DLLX0uEHXJvU8nOHrUK8IrwNKOtkVU&r=37nF0SnGtdjmcblOpYG7cKwaPDc1GWo5GNDvnDLF8TE&m=YD5JM4y8v44bpRXCOPKk3J0VIzak5IxqVyGe6fhkqAM&s=kCeGLk_Nd7hwvw13yJf3riq_6WW8ixnCv5pTFMijt_U&e=
> On Jan 3, 2018, at 17:08, Fröstl, Christian
<christian.froe...@accenture.com> wrote:
>
> Hi,
>
> Thanks for your response.
> Just one question to verify.
> In the default configuration, all events of level info, debug and trace
will be dropped, if the ringbuffer is full. For all other events the
application will block and if the ringbuffer has space again, the block will
release and the events will be written, right?
> That means that only events of type Info, debug and trace could be lost,
but none of the higher levels like error, warn and severe, right?
>
> Kind regards,
> Christian
>
> On 22.12.17, 01:53, "Remko Popma" <remko.po...@gmail.com> wrote:
>
> Yes by default the application thread will block until a slot becomes
available in the queue.
>
> Yes this is configurable: see
https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_apache_logging-2Dlog4j2_blob_master_log4j-2Dcore_src_main_java_org_apache_logging_log4j_core_async_AsyncQueueFullPolicyFactory.java&d=DwIFaQ&c=eIGjsITfXP_y-DLLX0uEHXJvU8nOHrUK8IrwNKOtkVU&r=37nF0SnGtdjmcblOpYG7cKwaPDc1GWo5GNDvnDLF8TE&m=hk-mti7hK6agTdNqpiQVl3gpA4ri4hrn2pxHf_8maIE&s=QykinLq8RJFWq5YIigJq8wWizXFOxKy3DWeXTomCnaM&e=
>
> (Shameless plug) Every java main() method deserves
https://urldefense.proofpoint.com/v2/url?u=http-3A__picocli.info&d=DwIFaQ&c=eIGjsITfXP_y-DLLX0uEHXJvU8nOHrUK8IrwNKOtkVU&r=37nF0SnGtdjmcblOpYG7cKwaPDc1GWo5GNDvnDLF8TE&m=hk-mti7hK6agTdNqpiQVl3gpA4ri4hrn2pxHf_8maIE&s=w_w2x7qWvjFgf1pKLN7kb5Q534FwglDl16TI5-OArl4&e=
>
>> On Dec 20, 2017, at 2:03, Fröstl, Christian
<christian.froe...@accenture.com> wrote:
>>
>> Hi,
>>
>> I currently don’t find any documentation regarding the fallback methods
of the log4j2 async logger.
>> What happens when the AsyncLogger.RingBufferSize is too small to log all
entries from a burst? Will the application fall back into sync logging and slow
down the application or will the new messages be dropped?
>> Is this a configurable behaviour?
>>
>> Kind regards,
>> Christian
>>
>>
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