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https://issues.apache.org/jira/browse/HDFS-222?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12758817#action_12758817
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Konstantin Shvachko commented on HDFS-222:
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Interesting that read just works with different lengths!
I think you should combine the incomplete block and full block tests into one
with somehow randomized block lengths, so that your 10 files had all different
lengths.
It would be interesting also to test concatenation of files with different
replication factors. So that the concat code takes care of removing or adding
replicas of the blocks of the new file.
Boris, could you please revert massive refactoring of imports in FSNamesystem
and submit it as a separate patch. We need to keep three branches in sync now,
and this change will not belong to the other two.
> Support for concatenating of files into a single file
> -----------------------------------------------------
>
> Key: HDFS-222
> URL: https://issues.apache.org/jira/browse/HDFS-222
> Project: Hadoop HDFS
> Issue Type: New Feature
> Reporter: Venkatesh S
> Assignee: Boris Shkolnik
> Attachments: HDFS-222.patch
>
>
> An API to concatenate files of same size and replication factor on HDFS into
> a single larger file.
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