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Posted to common-issues@hadoop.apache.org by "Xiao Chen (JIRA)" <ji...@apache.org> on 2016/08/11 04:47:20 UTC
[jira] [Updated] (HADOOP-13437) KMS should reload whitelist and
default key ACLs when hot-reloading
[ https://issues.apache.org/jira/browse/HADOOP-13437?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Xiao Chen updated HADOOP-13437:
-------------------------------
Attachment: HADOOP-13437.04.patch
Uploading patch 4 as a refined version.
I'm still confused of the {{containsKey}} check though: after an admin replaced a kms-acls.xml, why do we only want to update the named keys, but keep the old whitelist/defaults? After the replacement (suppose there was no backup), how could the admin figure out what exactly the whitelist/defaults are? The config file is not loaded, and nowhere else to look at....
[~asuresh], could you please chime in? Is this an expected behavior (so we need to keep compatible behavior), or is this a bug (so we can fix it here)? Thanks in advance...
> KMS should reload whitelist and default key ACLs when hot-reloading
> -------------------------------------------------------------------
>
> Key: HADOOP-13437
> URL: https://issues.apache.org/jira/browse/HADOOP-13437
> Project: Hadoop Common
> Issue Type: Bug
> Components: kms
> Affects Versions: 2.6.0
> Reporter: Xiao Chen
> Assignee: Xiao Chen
> Attachments: HADOOP-13437.01.patch, HADOOP-13437.02.patch, HADOOP-13437.03.patch, HADOOP-13437.04.patch
>
>
> When hot-reloading, {{KMSACLs#setKeyACLs}} ignores whitelist and default key entries if they're present in memory.
> We should reload them, hot-reload and cold-start should not have any difference in behavior.
> Credit to [~dilaver] for finding this.
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