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https://issues.apache.org/jira/browse/KAFKA-3347?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16477707#comment-16477707
]
ASF GitHub Bot commented on KAFKA-3347:
---------------------------------------
jcustenborder closed pull request #1026: KAFKA-3347 - Configure java to prefer
ipv4
URL: https://github.com/apache/kafka/pull/1026
This is a PR merged from a forked repository.
As GitHub hides the original diff on merge, it is displayed below for
the sake of provenance:
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diff --git a/bin/kafka-run-class.sh b/bin/kafka-run-class.sh
index f45d8d4af17..53f95dd70e5 100755
--- a/bin/kafka-run-class.sh
+++ b/bin/kafka-run-class.sh
@@ -161,9 +161,15 @@ fi
# JVM performance options
if [ -z "$KAFKA_JVM_PERFORMANCE_OPTS" ]; then
- KAFKA_JVM_PERFORMANCE_OPTS="-server -XX:+UseG1GC -XX:MaxGCPauseMillis=20
-XX:InitiatingHeapOccupancyPercent=35 -XX:+DisableExplicitGC
-Djava.awt.headless=true"
+ KAFKA_JVM_PERFORMANCE_OPTS="-server -XX:+UseG1GC -XX:MaxGCPauseMillis=20
-XX:InitiatingHeapOccupancyPercent=35 -XX:+DisableExplicitGC
-Djava.awt.headless=true "
fi
+# JVM networking options
+if [ -z "$KAFKA_NETWORK_OPTS" ]; then
+ KAFKA_NETWORK_OPTS="-Djava.net.preferIPv4Stack=true "
+fi
+
+
while [ $# -gt 0 ]; do
COMMAND=$1
@@ -199,7 +205,7 @@ fi
# Launch mode
if [ "x$DAEMON_MODE" = "xtrue" ]; then
- nohup $JAVA $KAFKA_HEAP_OPTS $KAFKA_JVM_PERFORMANCE_OPTS $KAFKA_GC_LOG_OPTS
$KAFKA_JMX_OPTS $KAFKA_LOG4J_OPTS -cp $CLASSPATH $KAFKA_OPTS "$@" >
"$CONSOLE_OUTPUT_FILE" 2>&1 < /dev/null &
+ nohup $JAVA $KAFKA_HEAP_OPTS $KAFKA_JVM_PERFORMANCE_OPTS $KAFKA_NETWORK_OPTS
$KAFKA_GC_LOG_OPTS $KAFKA_JMX_OPTS $KAFKA_LOG4J_OPTS -cp $CLASSPATH $KAFKA_OPTS
"$@" > "$CONSOLE_OUTPUT_FILE" 2>&1 < /dev/null &
else
- exec $JAVA $KAFKA_HEAP_OPTS $KAFKA_JVM_PERFORMANCE_OPTS $KAFKA_GC_LOG_OPTS
$KAFKA_JMX_OPTS $KAFKA_LOG4J_OPTS -cp $CLASSPATH $KAFKA_OPTS "$@"
+ exec $JAVA $KAFKA_HEAP_OPTS $KAFKA_JVM_PERFORMANCE_OPTS $KAFKA_NETWORK_OPTS
$KAFKA_GC_LOG_OPTS $KAFKA_JMX_OPTS $KAFKA_LOG4J_OPTS -cp $CLASSPATH $KAFKA_OPTS
"$@"
fi
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> Configure java to prefer ipv4
> -----------------------------
>
> Key: KAFKA-3347
> URL: https://issues.apache.org/jira/browse/KAFKA-3347
> Project: Kafka
> Issue Type: Improvement
> Components: core
> Affects Versions: 0.9.0.1
> Reporter: Jeremy Custenborder
> Assignee: Jeremy Custenborder
> Priority: Minor
>
> I've noticed that ports are sometimes binding on IPv6 addresses rather than
> the IPv4 address I'm expecting. Can we change this so we bing on the IPv4
> address rather than the IPv6 address? I'm proposing to add this to
> KAFKA_JVM_PERFORMANCE_OPTS.
> {code}
> -Djava.net.preferIPv4Stack=true
> {code}
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