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Posted to common-issues@hadoop.apache.org by "Akira Ajisaka (Jira)" <ji...@apache.org> on 2020/10/16 12:09:00 UTC
[jira] [Comment Edited] (HADOOP-17255) JavaKeyStoreProvider fails
to create a new key if the keystore is HDFS
[ https://issues.apache.org/jira/browse/HADOOP-17255?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17201920#comment-17201920 ]
Akira Ajisaka edited comment on HADOOP-17255 at 10/16/20, 12:08 PM:
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{quote}It wouldn't work if the keystore is in a HDFS encryption zone (it would end up in a recursive loop). Storing key store in unencrypted HDFS could in theory work, but transmitting unencrypted key store compromises security.
{quote}
Yes. Thank you for your explanation.
Note:
* I understand there are very few (or no) people using Hadoop KMS and the keystore is in unencrypted HDFS.
* Therefore it may not work even if this PR is merged.
* I'll use Ranger KMS instead because EMR recommends using it.
* Probably there are many users, so the quality of Ranger KMS is better than that of Hadoop KMS.
was (Author: ajisakaa):
bq. It wouldn't work if the keystore is in a HDFS encryption zone (it would end up in a recursive loop). Storing key store in unencrypted HDFS could in theory work, but transmitting unencrypted key store compromises security.
Yes. Thank you for your explanation.
Note:
* I understand there are very few (or no) people using Hadoop KMS and the keystore is in unencrypted HDFS.
* Therefore it may not work even if this PR is merged.
* I'll use Ranger KMS instead because CDP/EMR recommend using it.
* Probably there are many users, so the quality of Ranger KMS is better than that of Hadoop KMS.
> JavaKeyStoreProvider fails to create a new key if the keystore is HDFS
> ----------------------------------------------------------------------
>
> Key: HADOOP-17255
> URL: https://issues.apache.org/jira/browse/HADOOP-17255
> Project: Hadoop Common
> Issue Type: Bug
> Components: kms
> Reporter: Akira Ajisaka
> Assignee: Akira Ajisaka
> Priority: Major
> Labels: pull-request-available
> Time Spent: 1h 20m
> Remaining Estimate: 0h
>
> The caller of JavaKeyStoreProvider#renameOrFail assumes that it throws FileNotFoundException if the src does not exist. However, JavaKeyStoreProvider#renameOrFail calls the old rename API. In DistributedFileSystem, the old API returns false if the src does not exist.
> That way JavaKeyStoreProvider fails to create a new key if the keystore is HDFS.
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