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https://issues.apache.org/jira/browse/HADOOP-15006?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16322852#comment-16322852
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Steve Loughran commented on HADOOP-15006:
-----------------------------------------
Look how SequenceFile.Reader() works: it gets the length of the file from
getFileStatus() & then uses it downstream. If its size != stream length, this
is the code which crashes first :)
Imagine we had
{code}
FSDataInputStream file = openFile(fs, filename, bufSize, len);
len = file.getLength();
...
{code}
Fix that class and Hadoop internally gets robust, and on object stores,
actually cuts out a HEAD request. (saves $0.005 and 100 mS).
Patch ORC & Parquet and you've just moved the core formats onto it too.
> Encrypt S3A data client-side with Hadoop libraries & Hadoop KMS
> ---------------------------------------------------------------
>
> Key: HADOOP-15006
> URL: https://issues.apache.org/jira/browse/HADOOP-15006
> Project: Hadoop Common
> Issue Type: New Feature
> Components: fs/s3, kms
> Reporter: Steve Moist
> Priority: Minor
> Attachments: S3-CSE Proposal.pdf
>
>
> This is for the proposal to introduce Client Side Encryption to S3 in such a
> way that it can leverage HDFS transparent encryption, use the Hadoop KMS to
> manage keys, use the `hdfs crypto` command line tools to manage encryption
> zones in the cloud, and enable distcp to copy from HDFS to S3 (and
> vice-versa) with data still encrypted.
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