HADOOP-11630 Allow HDFS to bind to ipv6 conditionally

Signed-off-by: Elliott Clark <[email protected]>


Project: http://git-wip-us.apache.org/repos/asf/hadoop/repo
Commit: http://git-wip-us.apache.org/repos/asf/hadoop/commit/5c3f97d0
Tree: http://git-wip-us.apache.org/repos/asf/hadoop/tree/5c3f97d0
Diff: http://git-wip-us.apache.org/repos/asf/hadoop/diff/5c3f97d0

Branch: refs/heads/HADOOP-11890
Commit: 5c3f97d06d24c86f951d34777db7ceabd5ade006
Parents: 439f43a
Author: Elliott Clark <[email protected]>
Authored: Tue Feb 24 13:08:28 2015 -0800
Committer: Elliott Clark <[email protected]>
Committed: Fri Oct 2 08:55:04 2015 -0700

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 .../hadoop-common/src/main/bin/hadoop-functions.sh             | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)
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http://git-wip-us.apache.org/repos/asf/hadoop/blob/5c3f97d0/hadoop-common-project/hadoop-common/src/main/bin/hadoop-functions.sh
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diff --git 
a/hadoop-common-project/hadoop-common/src/main/bin/hadoop-functions.sh 
b/hadoop-common-project/hadoop-common/src/main/bin/hadoop-functions.sh
index b9b7919..208edae 100755
--- a/hadoop-common-project/hadoop-common/src/main/bin/hadoop-functions.sh
+++ b/hadoop-common-project/hadoop-common/src/main/bin/hadoop-functions.sh
@@ -269,7 +269,11 @@ function hadoop_bootstrap
   export HADOOP_OS_TYPE=${HADOOP_OS_TYPE:-$(uname -s)}
 
   # defaults
-  export HADOOP_OPTS=${HADOOP_OPTS:-"-Djava.net.preferIPv4Stack=true"}
+  if [[ "${HADOOP_ALLOW_IPV6}" -ne "yes" ]]; then
+    export HADOOP_OPTS=${HADOOP_OPTS:-"-Djava.net.preferIPv4Stack=true"}
+  else
+    export HADOOP_OPTS=${HADOOP_OPTS:-""}
+  fi
   hadoop_debug "Initial HADOOP_OPTS=${HADOOP_OPTS}"
 }
 

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