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https://issues.apache.org/jira/browse/HDFS-9405?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xiao Chen updated HDFS-9405:
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Attachment: HDFS-9405.09.patch
Patch 9 addresses above comments. Thanks again Andrew for the prompt and
helpful reviews.
Now the thread will wait for an initial delay after NN startup, then keeps
retrying indefinitely until succeeds or NN leaves active state. Both the
initial delay and retry interval are configurable.
In case of failures during retry, a message is logged every 10 seconds, plus
the first and last exception which are always logged.
> 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, HDFS-9405.08.patch, HDFS-9405.09.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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