[ https://issues.apache.org/jira/browse/HADOOP-928?page=com.
atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Hairong Kuang updated HADOOP-928:
---------------------------------
Attachment: checksum3.patch
It sounds good. The new patch reflects the suggestion. Hope
that the patch does not break anything. 
> make checksums optional per FileSystem
> --------------------------------------
>
> Key: HADOOP-928
> URL: http
s://issues.apache.org/jira/browse/HADOOP-928
> Project: Hadoop
> Issue Type: Improvement
> Components: fs
> Reporter: Doug Cutting
> Assigned To: Hairong Kuang
> Attachments: checksum.patch, checksum1.patch,
checksum2.patch, checksum3.patch
>
>
> Checksumming is currently built into the base
FileSystem class. It should instead be optional, with each
FileSystem implementation electing whether to use the
Hadoop-provided checksum system, or to disable it, or to
implement its own custom checksum system.
> To implement this, a ChecksumFileSystem implementation
can be provided that wraps another FileSystem
implementation, implementing checksums as in Hadoop's
current mandatory implementation (i.e., as a separate crc
file per file that's elided from directory listings). The
'raw' FileSystem methods would be removed.
FSDataInputStream and FSDataOutputStream would be made
interfaces.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue
online.
|
