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https://issues.apache.org/jira/browse/HDFS-12052?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16081494#comment-16081494
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John Zhuge commented on HDFS-12052:
-----------------------------------
Clicked the link
https://builds.apache.org/job/PreCommit-HDFS-Build/20219/artifact/patchprocess/diff-checkstyle-hadoop-hdfs-project_hadoop-hdfs-httpfs.txt:
{noformat}
./hadoop-hdfs-project/hadoop-hdfs-httpfs/src/main/java/org/apache/hadoop/fs/http/server/HttpFSAuthenticationFilter.java:22:import
org.apache.hadoop.fs.http.server.HttpFSServerWebServer;:1: Redundant import
from the same package - org.apache.hadoop.fs.http.server.HttpFSServerWebServer.
[RedundantImport]
{noformat}
> Set SWEBHDFS delegation token kind when ssl is enabled in HttpFS
> ----------------------------------------------------------------
>
> Key: HDFS-12052
> URL: https://issues.apache.org/jira/browse/HDFS-12052
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: httpfs, webhdfs
> Affects Versions: 2.7.3, 3.0.0-alpha3
> Reporter: Zoran Dimitrijevic
> Assignee: Zoran Dimitrijevic
> Attachments: HDFS-12052.00.patch, HDFS-12052.01.patch,
> HDFS-12052.02.patch, HDFS-12052.03.patch, HDFS-12052.04.patch,
> HDFS-12052.05.patch, HDFS-12052.06.patch
>
>
> When httpfs runs with httpfs.ssl.enabled it should return SWEBHDFS delegation
> tokens.
> Currently, httpfs returns WEBHDFS delegation "kind" for tokens regardless of
> whether ssl is enabled or not. If clients directly connect to renew tokens
> (for example, hdfs dfs) all works because httpfs doesn't check whether token
> kind is for swebhdfs or webhdfs. However, this breaks when yarn rm needs to
> renew the token for the job (for example, when running hadoop distcp). Since
> DT kind is WEBHDFS, rm tries to establish non-ssl connection to httpfs and
> fails.
> I've tested a simple patch which I'll upload to this jira, and it fixes this
> issue (hadoop distcp works).
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