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https://issues.apache.org/jira/browse/HADOOP-13715?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15932893#comment-15932893
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Steve Loughran commented on HADOOP-13715:
-----------------------------------------
* {{FileStatus.toString()}} needs to include the EC status. It'll be invaluable
for assertions and diagnostics
* The filesystem specification doesn't have any coverage of erasure coding or
this bit. At the very least it needs a mention in the FileStatus structure.
hich doesn't seem to have any explicit coverage except in the getFileStatus()
call and in invariants regarding consistency. Now would seem to be the time to
add more on the structure.
* There's enough {{assertFalse(fs.getFileStatus(dir).isErasureCoded())}} and
assertTrue that they could be pulled out into a method with better diags
{code}
assertErasureCoded(fs, path) {
FileStatus s = fs.getFileStatus(path)
assertTrue("Not erasure coded: " +s, s.isErasureCoded())
}
{code}
+ equivalent for assertNotErasureCoded. ContractTestUtils would be the obvious
place for them.
> 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: Manoj Govindassamy
> Priority: Blocker
> Labels: hdfs-ec-3.0-must-do
> Attachments: HADOOP-13715.01.patch
>
>
> 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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