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https://issues.apache.org/jira/browse/HADOOP-13597?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15720576#comment-15720576
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Allen Wittenauer commented on HADOOP-13597:
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Oh, I see what you were concerned about.
Looking closer at the code, I'd change the all-in-one to actually do
{code}
hadoop_add_param HADOOP_KMS_OPTS "Dkms.config.dir=" ...
hadoop_add_param HADOOP_KMS_OPTS "Dkms.log.dir=" ...
{code}
since that's much more likely the place where kms.config values get set. Then
the whole scenario becomes a non-issue. There's also precedent for just doing
something like:
{code}
HADOOP_KMS_OPTS=${HADOOP_KMS_OPTS:-"-Dfoo"}
{code}
(see hdfs-config.sh)
but I'm less of a fan of that. (We should probably undo those and use the
hadoop_add_param trick. It's cleaner, more practical, and does a better job of
actually protecting the user from missing defaults.)
Also, be aware of the rather severe consequences that
{code}
hadoop_deprecate_envvar KMS_CONFIG HADOOP_CONF_DIR
hadoop_deprecate_envvar KMS_LOG HADOOP_LOG_DIR
{code}
has.... if KMS_CONFIG was never an analog to HADOOP_CONF_DIR in branch-2, I'd
be tempted to just throw a manual warning about it rather than go though
deprecate.
> Switch KMS from Tomcat to Jetty
> -------------------------------
>
> Key: HADOOP-13597
> URL: https://issues.apache.org/jira/browse/HADOOP-13597
> Project: Hadoop Common
> Issue Type: New Feature
> Components: kms
> Affects Versions: 2.6.0
> Reporter: John Zhuge
> Assignee: John Zhuge
> Attachments: HADOOP-13597.001.patch, HADOOP-13597.002.patch
>
>
> The Tomcat 6 we are using will reach EOL at the end of 2017. While there are
> other good options, I would propose switching to {{Jetty 9}} for the
> following reasons:
> * Easier migration. Both Tomcat and Jetty are based on {{Servlet
> Containers}}, so we don't have change client code that much. It would require
> more work to switch to {{JAX-RS}}.
> * Well established.
> * Good performance and scalability.
> Other alternatives:
> * Jersey + Grizzly
> * Tomcat 8
> Your opinions will be greatly appreciated.
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