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Date: Fri, 9 Jun 2017 18:32:18 +0000 (UTC)
From: "Rushabh S Shah (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
Message-ID: <JIRA.13070967.1494452285000.41224.1497033138196@Atlassian.JIRA>
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References: <JIRA.13070967.1494452285000@Atlassian.JIRA> <JIRA.13070967.1494452285504@jira-lw-us.apache.org>
Subject: [jira] [Updated] (HDFS-11804) KMS client needs retry logic
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archived-at: Fri, 09 Jun 2017 18:32:22 -0000


     [ https://issues.apache.org/jira/browse/HDFS-11804?page=3Dcom.atlassia=
n.jira.plugin.system.issuetabpanels:all-tabpanel ]

Rushabh S Shah updated HDFS-11804:
----------------------------------
    Status: Patch Available  (was: Open)

> 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
>         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.patc=
h, HDFS-11804-trunk.patch
>
>
> The kms client appears to have no retry logic =E2=80=93=C2=A0at 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 networ=
k 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 reatt=
empts
> # EZ file creation fails after creating a 0-length file =E2=80=93=C2=A0cl=
ient receives EDEK in the create response, then fails when decrypting the E=
DEK
> # Bulk hadoop fs copies, and maybe distcp, will prematurely fail


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