eric baldeschwieler created HDFS-3699:
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Summary: HftpFileSystem should try both KSSL and SPNEGO when
authentication is required
Key: HDFS-3699
URL: https://issues.apache.org/jira/browse/HDFS-3699
Project: Hadoop HDFS
Issue Type: Bug
Reporter: eric baldeschwieler
See discussion in HDFS-2617 (Replaced Kerberized SSL for image transfer and
fsck with SPNEGO-based solution).
To handle the transition from Hadoop1.0 systems running KSSL authentication to
Hadoop systems running SPNEGO, it would be good to fix the client in both 1 and
2 to try SPNEGO and then fall back to try KSSL.
This will allow organizations that are running a lot of Hadoop 1.0 to gradually
transition over, without needing to convert all clusters at the same time.
They would first need to update their 1.0 HFTP clients (and 2.0/0.23 if they
are already running those) and then they could copy data between clusters
without needing to move all clusters to SPNEGO in a big bang.
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