Sentry seems to be causing errors itself?


I have an issue that my application is sending approximately 5k errors/hour to Sentry. This will eat through my event quota VERY fast.

The problem is, the errors appear to be from WITHIN the sentry plugin itself.

This issue only occured on the QA server, which at the time had an identical artifact as on prod.

There was no spike of CPU or network usage.

These errors do not show up on application level logs, which is done through log4j.

Here is my log4j setup.

<?xml version="1.0" encoding="UTF-8"?>
<timestamp key="byDay" datePattern="yyyyMMdd'T'HHmmss"/>

<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
    <pattern>%d{MMM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>

<appender name="FILE" class="ch.qos.logback.core.FileAppender">
  <file> logs/log-${byDay}.txt </file>
    <pattern>%d{MMM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{35} - %msg%n</pattern>

  <appender name="Sentry" class="io.sentry.logback.SentryAppender">
    <filter class="ch.qos.logback.classic.filter.ThresholdFilter">

<root level="info">
  <appender-ref ref="FILE" />
  <appender-ref ref="STDOUT" />
  <appender-ref ref="Sentry" />


Java 11, Jetty 9.4. Uses Log4J