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https://issues.apache.org/jira/browse/HADOOP-13715?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15572226#comment-15572226
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Steve Loughran commented on HADOOP-13715:
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# I'll be expecting filesystem.md to be updated with this.
# FileStatus instances get sent over the wire a lot. I'd be nice if any new
bitfields didn't add too much to the weight of an instance. It's too late to
move existing booleans (isDirectory, ....) to being bitmasks in a larger
number, but this may be the time to start, assuming we will continue to add
more booleans (isEncrypted, isErasureCoded, ...).
# are we sure that a simple boolean is actually the value desired? That is:
there is never going to be any other outcome at some point in the future. As if
it may happen (i.e. someone can see a clear roadmap to adding more detail on
erasure coding internals), then again, bitmask or enum of erasure coding
details calls out
> Add isErasureCoded() API to FileStatus class
> --------------------------------------------
>
> Key: HADOOP-13715
> URL: https://issues.apache.org/jira/browse/HADOOP-13715
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs
> Affects Versions: 3.0.0-alpha1
> Reporter: Wei-Chiu Chuang
> Assignee: Wei-Chiu Chuang
>
> Per the discussion in
> [HDFS-10971|https://issues.apache.org/jira/browse/HDFS-10971?focusedCommentId=15567108&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15567108]
> I would like to add a new API {{isErasureCoded()}} to {{FileStatus}} so that
> tools and downstream applications can tell if it needs to treat a file
> differently.
> Hadoop tools that can benefit from this effort include: distcp and
> teragen/terasort.
> Downstream applications such as flume or hbase may also benefit from it.
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