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https://issues.apache.org/jira/browse/HADOOP-16439?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16888937#comment-16888937
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Masatake Iwasaki commented on HADOOP-16439:
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Currently live versions of Tomcat are 7.0.x, 8.5.x and 9.0.x. Since Tomcat
9.0.x require Java 8 or later, 8.5.x or 7.0.x would be good candidate. Attached
000 patch upgrades Tomcat to 7.0.94. It is just for discussion. Just tested
that kms and https process can be started and putting/getting file to/from
encryption zone by {{hdfs dfs}} command.
> Upgrade bundled Tomcat in branch-2
> ----------------------------------
>
> Key: HADOOP-16439
> URL: https://issues.apache.org/jira/browse/HADOOP-16439
> Project: Hadoop Common
> Issue Type: Improvement
> Components: httpfs, kms
> Reporter: Masatake Iwasaki
> Priority: Major
> Attachments: HADOOP-16439-branch-2.000.patch
>
>
> proposed by [~jojochuang] in mailing list:
> {quote}We migrated from Tomcat to Jetty in Hadoop3, because Tomcat 6 went EOL
> in
> 2016. But we did not realize three years after Tomcat 6's EOL, a majority
> of Hadoop users are still in Hadoop 2, and it looks like Hadoop 2 will stay
> alive for another few years.
> Backporting Jetty to Hadoop2 is probably too big of an imcompatibility.
> How about migrating to Tomcat9?
> {quote}
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