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https://issues.apache.org/jira/browse/HDFS-6377?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13995977#comment-13995977
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Uma Maheswara Rao G edited comment on HDFS-6377 at 5/13/14 2:50 AM:
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Thanks Andrew.
Unifying xattr name and value limits into a single limit is OK for me.
I think in existing filesystems it should depend on the implementation, for
example in XFS they are separate limits:
http://en.wikipedia.org/wiki/Extended_file_attributes.
Furthermore, can we modify the configuration name according to [~cnauroth]'s
comments:
{quote}The defaults chosen in this patch look reasonable to me with
consideration of the use case driving xattrs. However, I wonder if the property
name should include "fs-limits" for consistency with the other metadata
limitation properties: dfs.namenode.fs-limits.max-component-length and
dfs.namenode.fs-limits.max-directory-items. What do you think?{quote}
+1 for me, and I'd like we modify the configuration name.
was (Author: hitliuyi):
Thanks Andrew.
I think unifing xattr name and value limits into a single limit is OK for me.
I think in existing filesystems it should depend on the implementation, for
example in XFS they are separate limits:
http://en.wikipedia.org/wiki/Extended_file_attributes.
Furthermore, can we modify the configuration name according to [~cnauroth]'s
comments:
{quote}The defaults chosen in this patch look reasonable to me with
consideration of the use case driving xattrs. However, I wonder if the property
name should include "fs-limits" for consistency with the other metadata
limitation properties: dfs.namenode.fs-limits.max-component-length and
dfs.namenode.fs-limits.max-directory-items. What do you think?{quote}
+1 for me, and I'd like we modify the configuration name.
> Unify xattr name and value limits into a single limit
> -----------------------------------------------------
>
> Key: HDFS-6377
> URL: https://issues.apache.org/jira/browse/HDFS-6377
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: namenode
> Affects Versions: HDFS XAttrs (HDFS-2006)
> Reporter: Andrew Wang
> Assignee: Andrew Wang
> Attachments: hdfs-6377-1.patch
>
>
> Instead of having separate limits and config options for the size of an
> xattr's name and value, let's use a single limit.
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