Rushabh S Shah created HDFS-11804:
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Summary: KMS client needs retry logic
Key: HDFS-11804
URL: https://issues.apache.org/jira/browse/HDFS-11804
Project: Hadoop HDFS
Issue Type: Bug
Affects Versions: 2.6.0
Reporter: Rushabh S Shah
Assignee: Rushabh S Shah
The kms client appears to have no retry logic – at all. It's completely
decoupled from the ipc retry logic. This has major impacts if the KMS is
unreachable for any reason, including but limited to network connection issues,
timeouts, the +restart during an upgrade+.
This has some major ramifications:
# Jobs may fail to submit, although oozie resubmit logic should mask it
# Non-oozie launchers may experience higher rates if they do not already have
retry logic.
# Tasks reading EZ files will fail, probably be masked by framework reattempts
# EZ file creation fails after creating a 0-length file – client receives EDEK
in the create response, then fails when decrypting the EDEK
# Bulk hadoop fs copies, and maybe distcp, will prematurely fail
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