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https://issues.apache.org/jira/browse/HDFS-10971?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Wang updated HDFS-10971:
-------------------------------
Resolution: Fixed
Fix Version/s: 3.0.0-alpha3
Status: Resolved (was: Patch Available)
Committed to trunk, thanks again Manoj for the patch and Wei-chiu for
identifying this issue originally!
> Distcp should not copy replication factor if source file is erasure coded
> -------------------------------------------------------------------------
>
> Key: HDFS-10971
> URL: https://issues.apache.org/jira/browse/HDFS-10971
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: distcp
> Affects Versions: 3.0.0-alpha1
> Reporter: Wei-Chiu Chuang
> Assignee: Manoj Govindassamy
> Priority: Blocker
> Labels: hdfs-ec-3.0-must-do
> Fix For: 3.0.0-alpha3
>
> Attachments: HDFS-10971.01.patch, HDFS-10971.02.patch,
> HDFS-10971.testcase.patch
>
>
> The current erasure coding implementation uses replication factor field to
> store erasure coding policy.
> Distcp copies the source file's replication factor to the destination if
> {{-pr}} is specified. However, if the source file is EC, the replication
> factor (which is EC policy) should not be replicated to the destination file.
> When a HdfsFileStatus is converted to FileStatus, the replication factor is
> set to 0 if it's an EC file.
> In fact, I will attach a test case that shows trying to replicate the
> replication factor of an EC file results in an IOException: "Requested
> replication factor of 0 is less than the required minimum of 1 for
> /tmp/dst/dest2"
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