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https://issues.apache.org/jira/browse/MAPREDUCE-4552?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13565435#comment-13565435
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Daryn Sharp commented on MAPREDUCE-4552:
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Is it possible to decompose this patch further? It's very interesting work but
overwhelming to review.
I am a bit concerned about multiple places walking a directory structure. It
also seems like it's making assumptions about MR's directory layout (ex.
_temporary) which creates a fragile coupling. This will break if MR's path
layout changes, and I know there's been talk of changing how commit works.
On the surface, the pattern matches against filenames is worrisome that
assumption are again being made.
> Encryption: Add support for PGP Encryption
> -------------------------------------------
>
> Key: MAPREDUCE-4552
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4552
> Project: Hadoop Map/Reduce
> Issue Type: Sub-task
> Components: security
> Reporter: Benoy Antony
> Assignee: Benoy Antony
> Attachments: MR_4552_1_1.patch, MR_4552_trunk.patch
>
>
> Provide support for PGP encryption by implementing Encrypter and Decrypter
> interfaces defined in MAPREDUCE-4450. This can be used by the cluster to
> protect the job secrets. This also be used map reduce jobs to encrypt/decrypt
> data.
> Add PGPCodec as a CompressionCodec so that encrypted data can be processed
> transparently like compressed data . The aliases to the keys can be specified
> as part of Job.
> Based on PGPCodec, a number of utilities are provided to encrypt, decrypt the
> data in cluster. They include
> 1. DistributedSplitter – Split an encrypted file into smaller files.
> 2. DistributedEncrypter – encrypt files in a cluster.
> 3. DistributedDecrypter – decrypt encrypted files in a cluster.
> 4. DistributedRecrypter – decrypt an encrypted file and encrypt it with
> another key.
> Uitlities are added to encrypt/decrypt files in local file system
> 1. Genkey - Generate an asymmetric key pair (public and private keys) of a
> specified strength
> 2. Encrypt - Encrypt a file
> 3. Decrypt – Decrypt a file
> Added as a contrib project - hadoop-crypto.
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