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From "Xiao Chen (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-9405) When starting a file, NameNode should generate EDEK in a separate thread
Date Wed, 16 Mar 2016 07:06:33 GMT

     [ https://issues.apache.org/jira/browse/HDFS-9405?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Xiao Chen updated HDFS-9405:
----------------------------
    Attachment: HDFS-9405.07.patch

I took another pass on my patch, I think I should also log the IOException if the warm up
failed, even when debug is not enabled. Patch 7 does this. Please review, thanks!

> When starting a file, NameNode should generate EDEK in a separate thread
> ------------------------------------------------------------------------
>
>                 Key: HDFS-9405
>                 URL: https://issues.apache.org/jira/browse/HDFS-9405
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: encryption, namenode
>    Affects Versions: 2.7.1
>            Reporter: Zhe Zhang
>            Assignee: Xiao Chen
>         Attachments: HDFS-9405.01.patch, HDFS-9405.02.patch, HDFS-9405.03.patch, HDFS-9405.04.patch,
HDFS-9405.05.patch, HDFS-9405.06.patch, HDFS-9405.07.patch
>
>
> {{generateEncryptedDataEncryptionKey}} involves a non-trivial I/O operation to the key
provider, which could be slow or cause timeout. It should be done as a separate thread so
as to return a proper error message to the RPC caller.



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