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https://issues.apache.org/jira/browse/HDFS-8120?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14495576#comment-14495576
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Jing Zhao commented on HDFS-8120:
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bq. which make DFSOutputStream#completeFile fail.
More accurately, here the question is when no real data is written, the
{{DFSStripedOutputStream}} should not allocate a new block in NameNode. If no
block is allocated, NN will not wait for block-received reports from DN thus
completeFile will not get blocked or fail.
> Erasure coding: created util class to analyze striped block groups
> ------------------------------------------------------------------
>
> Key: HDFS-8120
> URL: https://issues.apache.org/jira/browse/HDFS-8120
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Zhe Zhang
> Assignee: Zhe Zhang
> Attachments: HDFS-8120.000.patch, HDFS-8120.001.patch,
> HDFS-8120.002.patch, HDFS-8120.003.patch, HDFS-8120.004.patch
>
>
> The patch adds logic of calculating size of individual blocks in a striped
> block group.
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