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Posted to common-issues@hadoop.apache.org by "Rushabh S Shah (JIRA)" <ji...@apache.org> on 2017/06/12 17:11:01 UTC
[jira] [Moved] (HADOOP-14521) KMS client needs retry logic
[ https://issues.apache.org/jira/browse/HADOOP-14521?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Rushabh S Shah moved HDFS-11804 to HADOOP-14521:
------------------------------------------------
Affects Version/s: (was: 2.6.0)
2.6.0
Target Version/s: 2.9.0, 3.0.0-alpha4, 2.8.2 (was: 3.0.0-alpha4, 2.8.2)
Issue Type: Improvement (was: Bug)
Key: HADOOP-14521 (was: HDFS-11804)
Project: Hadoop Common (was: Hadoop HDFS)
> KMS client needs retry logic
> ----------------------------
>
> Key: HADOOP-14521
> URL: https://issues.apache.org/jira/browse/HADOOP-14521
> Project: Hadoop Common
> Issue Type: Improvement
> Affects Versions: 2.6.0
> Reporter: Rushabh S Shah
> Assignee: Rushabh S Shah
> Attachments: HDFS-11804-trunk-1.patch, HDFS-11804-trunk-2.patch, HDFS-11804-trunk-3.patch, HDFS-11804-trunk-4.patch, HDFS-11804-trunk-5.patch, HDFS-11804-trunk-6.patch, HDFS-11804-trunk.patch
>
>
> 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 not 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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