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https://issues.apache.org/jira/browse/HDFS-8839?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14651524#comment-14651524
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Walter Su commented on HDFS-8839:
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bq. Otherwise, the client writing can't go on.
Yes, it hangs. It's a problem.
bq. the namenode should still allocate 9 locations even it knows one of them is
invalid.
It's not the best solution. Please check my last comment at HDFS-8220. We can
continue discuss there.
> Erasure Coding: client occasionally gets less block locations when some
> datanodes fail
> ---------------------------------------------------------------------------------------
>
> Key: HDFS-8839
> URL: https://issues.apache.org/jira/browse/HDFS-8839
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Li Bo
> Assignee: Li Bo
>
> 9 datanodes, write two block groups. A datanode dies when writing the first
> block group. When client retrieves the second block group from namenode, the
> returned block group only contains 8 locations occasionally.
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