From 548e632f654b89e4e0790091583d9caf32059711 Mon Sep 17 00:00:00 2001
From: Matteo Merli <mmerli@yahoo-inc.com>
Date: Thu, 9 Feb 2017 17:41:42 -0800
Subject: [PATCH] Prefer ipv4 in client connections

---
 bin/pulsar        | 2 +-
 bin/pulsar-admin  | 1 +
 bin/pulsar-client | 1 +
 bin/pulsar-perf   | 2 +-
 4 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/bin/pulsar b/bin/pulsar
index 884c44fdf6765..30238f8317f2f 100755
--- a/bin/pulsar
+++ b/bin/pulsar
@@ -168,7 +168,7 @@ OPTS="$OPTS -Dlog4j.configuration=`basename $PULSAR_LOG_CONF`"
 # Ensure we can read bigger content from ZK. (It might be
 # rarely needed when trying to list many z-nodes under a
 # directory)
-OPTS="$OPTS -Djute.maxbuffer=10485760"
+OPTS="$OPTS -Djute.maxbuffer=10485760 -Djava.net.preferIPv4Stack=true"
 
 OPTS="-cp $PULSAR_CLASSPATH $OPTS"
 
diff --git a/bin/pulsar-admin b/bin/pulsar-admin
index 2080b48275dfa..e32b2e3c5d643 100755
--- a/bin/pulsar-admin
+++ b/bin/pulsar-admin
@@ -86,6 +86,7 @@ fi
 PULSAR_CLASSPATH="$PULSAR_JAR:$PULSAR_CLASSPATH:$PULSAR_EXTRA_CLASSPATH"
 PULSAR_CLASSPATH="`dirname $PULSAR_LOG_CONF`:$PULSAR_CLASSPATH"
 OPTS="$OPTS -Dlog4j.configuration=`basename $PULSAR_LOG_CONF`"
+OPTS="$OPTS -Djava.net.preferIPv4Stack=true"
 
 OPTS="-cp $PULSAR_CLASSPATH $OPTS"
 
diff --git a/bin/pulsar-client b/bin/pulsar-client
index 482883428fbbd..5a3b091527813 100755
--- a/bin/pulsar-client
+++ b/bin/pulsar-client
@@ -86,6 +86,7 @@ fi
 PULSAR_CLASSPATH="$PULSAR_JAR:$PULSAR_CLASSPATH:$PULSAR_EXTRA_CLASSPATH"
 PULSAR_CLASSPATH="`dirname $PULSAR_LOG_CONF`:$PULSAR_CLASSPATH"
 OPTS="$OPTS -Dlog4j.configuration=`basename $PULSAR_LOG_CONF`"
+OPTS="$OPTS -Djava.net.preferIPv4Stack=true"
 
 OPTS="-cp $PULSAR_CLASSPATH $OPTS"
 
diff --git a/bin/pulsar-perf b/bin/pulsar-perf
index 5e0bbf1e32605..b64b046f10440 100755
--- a/bin/pulsar-perf
+++ b/bin/pulsar-perf
@@ -105,7 +105,7 @@ fi
 
 PULSAR_CLASSPATH="$PULSAR_JAR:$PULSAR_CLASSPATH:$PULSAR_EXTRA_CLASSPATH"
 PULSAR_CLASSPATH="`dirname $PULSAR_LOG_CONF`:$PULSAR_CLASSPATH"
-OPTS="$OPTS -Dlog4j.configuration=`basename $PULSAR_LOG_CONF`"
+OPTS="$OPTS -Dlog4j.configuration=`basename $PULSAR_LOG_CONF` -Djava.net.preferIPv4Stack=true"
 
 OPTS="-cp $PULSAR_CLASSPATH $OPTS"
 OPTS="$OPTS $PULSAR_EXTRA_OPTS"