Logback Appender and message size

[ottuzzi-at-vegans]

Hi all,

we are using HttpEventCollectorLogbackAppender in raw mode and it looks like sent messages are somehow cut at a bit less than 10240 bytes.
Checking source code I see there is a limit in batchSize (coincidential?) at 10240 and I cannot override it as we are in raw mode[1]: is there any tip around this issue? Sometime we need to send large-ish json payload in the message and we are losing informations.
This is our logback.xml configuration:

			<appender name="SPLUNK_APPENDER"
				class="com.splunk.logging.HttpEventCollectorLogbackAppender">
				<url>${SPLUNK_URL}</url>
				<token>${SPLUNK_TOKEN}</token>
				<index>${SPLUNK_INDEX}</index>
				<!-- disableCertificateValidation should be true as we do not use valid certificates -->
				<disableCertificateValidation>true</disableCertificateValidation>
				
				<source>${SOURCE}</source>
				<sourcetype>logback</sourcetype>
				<messageFormat>text</messageFormat>
				<type>raw</type>
				<layout class="ch.qos.logback.classic.PatternLayout">
					<pattern>%d{yyyy-MM-dd'T'HH:mm:ss.SSSXXX, UTC} %.-3level SPAN_ID=%X{span_id} TRACE_ID=%X{trace_id} callId=%X{CALL_ID} uID=%X{USER_ID} ST=%X{SESSION_TOKEN} CH=%X{CHANNEL} %logger{35} - %msg%n%xException</pattern>
				</layout>
			</appender>

Thanks in advance for any help

[1]

splunk-library-javalogging/src/main/java/com/splunk/logging/HttpEventCollectorLogbackAppender.java

Line 251 in cf59a50

private void validateNotBatchedAndRaw() {