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https://issues.apache.org/jira/browse/HDFS-12532?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16218114#comment-16218114
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Brahma Reddy Battula commented on HDFS-12532:
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bq.I recommend either switching your interface and aliased ips
Looks It's not possible in our environment. It used for another components also.
bq. set dfs.namenode.datanode.registration.ip-hostname-check=false.
This can aviod the ERROR, but it will overide the [folating
IP|https://github.com/apache/hadoop/blob/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/DatanodeManager.java#L1025]
hence clients will get this IP from Namenode but Datanode will listen on
another IP?
I feel, when principal having hostname which can't resolvable (i.e bindAddr =
null),we can have one config like below..? This can be configured DualIP
machines.
{code}
if (bindAddr == null) {
String bindAddrIp = conf.get(
CommonConfigurationKeysPublic.IPC_CLIENT_CONNECT_LOCAL_BIND_IP_KEY);
if (bindAddrIp != null && !bindAddrIp.isEmpty()) {
bindAddr = new InetSocketAddress(bindAddrIp, 0);
}
}
{code}
> DN Reg can Fail when principal doesn't contain hostname and floatingIP is
> configured.
> -------------------------------------------------------------------------------------
>
> Key: HDFS-12532
> URL: https://issues.apache.org/jira/browse/HDFS-12532
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Brahma Reddy Battula
>
> Configure principal without hostname (i.e hdfs/[email protected])
> Configure floatingIP
> Start Cluster.
> Here DN will fail to register as it can take IP which is not in "/etc/hosts".
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