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https://issues.apache.org/jira/browse/HDFS-14423?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jing Wang updated HDFS-14423:
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Summary: Percent (%) and plus (+) characters no longer work in WebHDFS
(was: Percent (%) characters no longer work in WebHDFS)
> Percent (%) and plus (+) characters no longer work in WebHDFS
> -------------------------------------------------------------
>
> Key: HDFS-14423
> URL: https://issues.apache.org/jira/browse/HDFS-14423
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: webhdfs
> Affects Versions: 3.2.0, 3.1.2
> Environment: Ubuntu 16.04, but I believe this is irrelevant.
> Reporter: Jing Wang
> Priority: Major
>
> The following commands no longer work starting with version 3.1:
> {code}
> $ hadoop/bin/hdfs dfs -touchz webhdfs://localhost/%
> $ hadoop/bin/hdfs dfs -cat webhdfs://localhost/%
> cat: URLDecoder: Incomplete trailing escape (%) pattern
> {code}
> I can confirm that they work correctly on 2.9 and 3.0. Also, the usual
> hdfs:// client works as expected.
> I suspect a relation with HDFS-13176 or HDFS-13582, but I'm not sure what the
> right fix is. Note that Hive uses % to escape special characters in partition
> values, so banning % might not be a good option. For example, Hive will
> create a paths like {{table_name/partition_key=%2F}} when
> {{partition_key='/'}}.
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