## JVM configuration

# Xms represents the initial size of total heap space
# Xmx represents the maximum size of total heap space

-Xms1g
-Xmx1g

################################################################
## Expert settings
################################################################
##
## All settings below this section are considered
## expert settings. Don't tamper with them unless
## you understand what you are doing
##
################################################################


## Locale
# Set the locale language
#-Duser.language=en

# Set the locale country
#-Duser.country=US

# Set the locale variant, if any
#-Duser.variant=

## basic

# set the I/O temp directory
#-Djava.io.tmpdir=${HOME}

# set to headless, just in case
-Djava.awt.headless=true

# ensure UTF-8 encoding by default (e.g. filenames)
-Dfile.encoding=UTF-8

# use our provided JNA always versus the system one
#-Djna.nosys=true

# Turn on JRuby invokedynamic
-Djruby.compile.invokedynamic=true

## heap dumps

# generate a heap dump when an allocation from the Java heap fails
# heap dumps are created in the working directory of the JVM
-XX:+HeapDumpOnOutOfMemoryError

# specify an alternative path for heap dumps
# ensure the directory exists and has sufficient space
#-XX:HeapDumpPath=${LOGSTASH_HOME}/heapdump.hprof

## GC logging
#-Xlog:gc*,gc+age=trace,safepoint:file=${LS_GC_LOG_FILE}:utctime,pid,tags:filecount=32,filesize=64m

# Entropy source for randomness
-Djava.security.egd=file:/dev/urandom

# Copy the logging context from parent threads to children
-Dlog4j2.isThreadContextMapInheritable=true

# FasterXML/jackson defaults
#
# Sets the maximum string length (in chars or bytes, depending on input context).
# This limit is not exact and an exception will happen at sizes greater than this limit.
# Some text values that are a little bigger than the limit may be treated as valid but no
# text values with sizes less than or equal to this limit will be treated as invalid.
# This value should be higher than `logstash.jackson.stream-read-constraints.max-number-length`.
# The jackson library defaults to 20000000 or 20MB, whereas Logstash defaults to 200MB or 200000000 characters.
#-Dlogstash.jackson.stream-read-constraints.max-string-length=200000000
#
# Sets the maximum number length (in chars or bytes, depending on input context).
# The jackson library defaults to 1000, whereas Logstash defaults to 10000.
#-Dlogstash.jackson.stream-read-constraints.max-number-length=10000
#
# Sets the maximum nesting depth. The depth is a count of objects and arrays that have not
# been closed, `{` and `[` respectively.
#-Dlogstash.jackson.stream-read-constraints.max-nesting-depth=1000