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https://issues.apache.org/jira/browse/HDFS-12284?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16665766#comment-16665766
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CR Hota commented on HDFS-12284:
--------------------------------
Thanks a lot [~elgoiri] [~lukmajercak] for the extensive testing you folks did.
The environment at my end is much more controlled hence hard to find these
issues.
We can create another ticket for adding hdfs-rbf-default.xml in
HdfsConfiguration, but wondering how it will work for NameNode? Because in a
namenode scenario, hdfs-rbf-default.xml may not be in the classpath.
{code:java}
public class HdfsConfiguration extends Configuration {
static {
addDeprecatedKeys();
// adds the default resources
Configuration.addDefaultResource("hdfs-default.xml");
Configuration.addDefaultResource("hdfs-site.xml");
}
{code}
[~daryn] Thanks for reviewing the initial patch.
Haven't looked at the connection manager but you may have
performance issues. IPC connections are per-instance based on ugi. You probably
want to cache user -> ugi to avoid multiple connections and
only construct a ugi if necessary.
Dint grasp your point. ConnectionManager does maintain a pool of connections
corresponding to a ugi+namenode combination. New code of kerberos doesn't
violate that as ugi's will change per user level since router always proxies
for original client user. I plan to enhance the connection pooling part by
introducing synchronous connection creation using semaphore semantics instead
of the current asynchronous connection creation.
> RBF: Support for Kerberos authentication
> ----------------------------------------
>
> Key: HDFS-12284
> URL: https://issues.apache.org/jira/browse/HDFS-12284
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: security
> Reporter: Zhe Zhang
> Assignee: Sherwood Zheng
> Priority: Major
> Attachments: HDFS-12284-HDFS-13532.004.patch,
> HDFS-12284-HDFS-13532.005.patch, HDFS-12284-HDFS-13532.006.patch,
> HDFS-12284-HDFS-13532.007.patch, HDFS-12284-HDFS-13532.008.patch,
> HDFS-12284-HDFS-13532.009.patch, HDFS-12284-HDFS-13532.010.patch,
> HDFS-12284-HDFS-13532.011.patch, HDFS-12284-HDFS-13532.012.patch,
> HDFS-12284.000.patch, HDFS-12284.001.patch, HDFS-12284.002.patch,
> HDFS-12284.003.patch
>
>
> HDFS Router should support Kerberos authentication and issuing / managing
> HDFS delegation tokens.
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